Siemens MicroSAM Operating Instructions Manual
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Process Gas Chromatograph
MicroSAM
Operating Instructions
7KQ3101
06/2012
C79000-G5376-C560-07
Purpose of this
documentation
1
General information
2
Description
3
Mounting
4
Commissioning and
operation
5
Service and maintenance
6
Spare parts/accessories
7
Examples
8
Technical data
9
Dimension drawings
10
Appendix
A
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the relevant information is not taken into account.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: C79000-G5376-C560
Ⓟ 07/2012 Technical data subject to change
Copyright © Siemens AG 2012.
All rights reserved
Operating Instructions, 06/2012, C79000-G5376-C560-07
3
Table of contents
1
Purpose of this documentation .................................................................................................................. 7
2
General information ................................................................................................................................... 9
2.1
Intended use ..................................................................................................................................9
2.2
Safety information..........................................................................................................................9
2.3
Transportation..............................................................................................................................11
2.4
Protection against explosion........................................................................................................12
2.4.1
General regulations......................................................................................................................12
2.4.2
Directives for operation................................................................................................................15
2.5
Qualified personnel......................................................................................................................17
2.6
Limitation of liability for external accessories...............................................................................17
2.7
Final shutdown and disposal........................................................................................................17
3
Description............................................................................................................................................... 19
3.1
Applications..................................................................................................................................19
3.2
Product features...........................................................................................................................20
3.3
MicroSAM design.........................................................................................................................21
3.4
Rating plate design ......................................................................................................................22
3.5
Functional description of the electronics......................................................................................23
3.6
Functions......................................................................................................................................25
3.6.1
Gas flow charts ............................................................................................................................26
3.6.2
Analysis module...........................................................................................................................28
3.6.3
Example of time switching commands.........................................................................................32
3.6.4
Thermal release in the analysis module ......................................................................................33
3.6.5
Measuring sequence....................................................................................................................33
3.6.5.1
Preparation of measurement .......................................................................................................35
3.6.5.2
Purge sample loop.......................................................................................................................39
3.6.5.3
Injecting........................................................................................................................................41
3.6.5.4
Empty sample loop completely ....................................................................................................43
3.6.5.5
Purge sample loop with sample...................................................................................................44
3.6.5.6
Cut - start .....................................................................................................................................45
3.6.5.7
Cut - end ......................................................................................................................................46
3.6.5.8
Backflushing.................................................................................................................................47
3.6.6
Cut - check...................................................................................................................................49
3.6.7
Backflushing - check....................................................................................................................50
3.6.8
Monitoring of the chromatograph functions .................................................................................51
3.6.9
Temperature control systems ......................................................................................................53
Table of contents
MicroSAM
4
Operating Instructions, 06/2012, C79000-G5376-C560-07
4
Mounting.................................................................................................................................................. 55
4.1
On-site requirements................................................................................................................... 55
4.2
Space requirement...................................................................................................................... 55
4.3
Fixing........................................................................................................................................... 56
4.4
Mounting and connecting............................................................................................................ 57
4.4.1
Requirements for mounting:........................................................................................................ 57
4.4.2
Gas lines ..................................................................................................................................... 58
4.4.3
Sample lines................................................................................................................................ 59
4.4.4
Exhaust gas lines........................................................................................................................ 60
4.4.5
Equipotential bonding cable/grounding....................................................................................... 60
4.4.6
Lightning protection..................................................................................................................... 60
4.4.7
Installing the communications cable ........................................................................................... 61
4.4.8
Breathing device ......................................................................................................................... 62
4.4.9
Power switch and fuse ................................................................................................................ 63
4.4.10
Fitting the power cable................................................................................................................ 64
4.4.11
Connecting of digital outputs and digital inputs........................................................................... 65
4.4.12
Connecting the HMI device......................................................................................................... 66
4.4.13
Connecting the HMI device on site (only for servicing purposes)............................................... 66
5
Commissioning and operation ................................................................................................................. 71
5.1
Connection of gas lines............................................................................................................... 72
5.2
Activating the gas supply ............................................................................................................ 72
5.3
Switching on the chromatograph ................................................................................................ 73
5.4
Starting the PC and operating software...................................................................................... 74
5.5
Shutting down ............................................................................................................................. 75
6
Service and maintenance ........................................................................................................................ 77
6.1
Maintenance of analysis module................................................................................................. 77
6.1.1
Removal of analysis module ....................................................................................................... 77
6.1.2
Installing the analysis module ..................................................................................................... 84
6.2
Replacing the carrier gas cylinders............................................................................................. 87
6.3
Installing and removing electronic components.......................................................................... 87
6.3.1
Removal of electronic modules................................................................................................... 88
6.3.2
Installation of electronic modules................................................................................................ 92
6.4
Conversion of MicroSAM basic device AS09.............................................................................. 94
6.4.1
Preparation for use of analysis modules of type A ..................................................................... 94
6.4.2
Restoring of data for AS09 type A .............................................................................................. 96
6.4.3
Returning for use of analysis modules of type D ........................................................................ 98
7
Spare parts/accessories ........................................................................................................................ 101
7.1
Spare parts list .......................................................................................................................... 101
7.2
Accessories............................................................................................................................... 102
Table of contents
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
5
8
Examples............................................................................................................................................... 103
9
Technical data ....................................................................................................................................... 105
10
Dimension drawings .............................................................................................................................. 111
A
Appendix................................................................................................................................................ 113
A.1
Principle of live column switching ..............................................................................................113
A.1.1
Advantages of live switching......................................................................................................114
A.1.2
Live switching function...............................................................................................................115
A.2
ESD guidelines ..........................................................................................................................120
A.3
EC Declaration of Conformity ....................................................................................................122
A.4
A marking in accordance with KC (Korea).................................................................................122
A.5
Service and Support ..................................................................................................................123
A.6
List of abbreviations...................................................................................................................124
Glossary ................................................................................................................................................ 127
Index...................................................................................................................................................... 133
Operating Instructions, 06/2012, C79000-G5376-C560-07
7
Purpose of this documentation
1
These instructions contain all information that you will require to commission and use the
device.
It is aimed at persons who install the device mechanically, connect it electrically,
parameterize and commission it, as well as at service and maintenance engineers.
Note
Please read the operating instructions before you use this device. The operating
instructions contain all important information for the device.
Observation of the information:
– Guarantees correct device functioning
– Provides reliable results
– Saves you servicing costs
Information
The contents of these instructions are neither part of an earlier existing agreement,
statement or legal commitment nor do they change this. All obligations on the part of
Siemens AG are contained in the respective sales contract which also contains the complete
and solely applicable warranty conditions. Any statements contained herein do not create
new warranties or modify the existing warranty.
The content reflects the technical status at the time of printing. We reserve the right to make
technical changes in the course of further development.
History
The following table shows the most important changes in the documentation compared to
each previous edition:
Issue
Comment
Firmware
04
03/2012
Revision of contents and editing
FW: 3.10
03
02/2010
Revision of contents and editing
FW: 3.00
02
09/2008
Revision of contents and editing
FW: 02.08.00
01
08/2006
First edition
FW: 01.17.00
Operating Instructions, 06/2012, C79000-G5376-C560-07
9
General information
2
2.1
Intended use
● This gas chromatograph is used to separate and quantitatively determine components in
a gaseous sample.
● The device may only be used for the purposes specified in these instructions.
● Modifications to the device which are not expressly referred to in these instructions
therefore result in an application which is not in accordance with the intended use. Such
modifications to the device are then the exclusive responsibility of the user.
2.2
Safety information
The gas chromatograph complies with the applicable safety standards. If the handling
instructions and safety information are observed, no dangers exist when using the device
which could endanger the health of personnel or result in damage to property.
You will find the safety information:
● In these operating instructions and in the manual
● On the gas chromatograph
● On the chromatograph components
WARNING
Only appropriately qualified persons are permitted to make interventions on this device.
These persons must be thoroughly familiar with all sources of danger and service
activities in accordance with these operating instructions.
For trouble-free and safe operation of this device, the following requirements must be
met:
Transportation in accordance with proper procedures
Proper storage
Proper installation and assembly
Careful operation and maintenance
To avoid injury to persons and damage to the device, please observe the information in
the manual.
2.2 Safety information
MicroSAM
10
Operating Instructions, 06/2012, C79000-G5376-C560-07
WARNING
Dangerous gases
The gas chromatograph requires various gases for operation which have different
danger potentials.
The gas chromatograph may require gases for operation which produce an explosive
mixture with air.
Route all exhaust gases out of the gas chromatograph and away from the position of
use using a common line.
Always provide sufficient ventilation as soon as you allow the sample gas line to run
empty and the sample gas contains corrosive or toxic components.
CAUTION
Corrosion danger
The housing and the pipelines are resistant to solvents as well as weak alkalis and
acids.
Check the resistance of the housing and the pipelines when using in an environment
with strong alkalis or acids and/or at higher temperatures.
Avoided corrosion and damage of the connection lines resulting from permanent contact
with the following substances:
Nitric acid
Hydrochloric acid
Carbon bisulfide
Ethanol
Formic acid
Petroleum spirit
Hydraulic oil
Isopropanol
Operating Instructions, 06/2012, C79000-G5376-C560-07
11
CAUTION
Electrostatic sensitive devices
This device contains electrostatic sensitive devices. Electrostatic sensitive devices may
be destroyed by voltages that are undetectable to a human. Voltages of this kind occur
as soon as a component or an assembly is touched by a person who is not grounded
against static electricity. The damage to a module as a result of overvoltage cannot
usually be detected immediately. It may only become apparent after a long period of
operation.
Protective measures against discharge of static electricity:
Before you work with modules, first discharge any static charges from your body, for
example by touching a grounded object.
Devices and tools used must be free of static charge.
Always pull the mains connector and disconnect the battery before installing or
removing modules.
Hold modules only by their edges, and do not touch pins or printed conductors.
2.3
Transportation
The gas chromatograph is supplied in various designs, and can also include a metal bracket
as a protective unit for the connection pipes (see ⑦, Fig. 3.1). If the chromatograph is
supplied with this metal bracket, it must only be transported or shipped together with it.
Furthermore, we also recommend operation of the chromatograph with the metal bracket
fitted.
If the chromatograph is transported or shipped without this metal bracket, the warranty is
nullified.
Exception: The metal bracket is not required if the chromatograph is mounted in a protective
casing approved by Siemens. In this case, transportation or shipping of the chromatograph is
only permissible in this protective casing.
2.4 Protection against explosion
MicroSAM
12
Operating Instructions, 06/2012, C79000-G5376-C560-07
2.4
Protection against explosion
2.4.1
General regulations
The installation and operation of electrical equipment in potentially explosive atmospheres
are regulated by the directive RL 99/92/EU (ATEX 137). This directive refers to the generally
recognized process engineering regulations.
WARNING
Cancellation of the explosion protection
The test certificate for your explosion-proof gas chromatograph only applies to the original
configuration as well as to connection and installation according to the switching and piping
plans of Siemens AG. Changing one or more components will void the explosion protection
for your device.
Conditions
The test certificate and any supplements contain all conditions and regulations specified for
installation and operation of the device.
2.4 Protection against explosion
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
13
WARNING
Explosion hazard
The device is designed to analyze flammable and non-flammable gaseous media.
Hydrogen or inert gases are used as auxiliary gases.
For the analysis of flammable gases or use of hydrogen as a carrier gas, oxygen may
only be present in concentrations ≤ 2% in the sample.
Oxygen at concentrations up to 21% and pressure up to 1.1 bar (110 kPa) is permissible
for operation only if an additional constructive explosion protection measure is
implemented, for example, installation of a flame arrester between the process
connection and gas chromatograph.
Oxygen at concentrations up to 21% and pressure > 1.1 bar (110 kPa) is not allowed
under normal operating conditions for explosive mixtures.
The pneumatic conditions for the sample and the auxiliary gas must be strictly observed:
– Sample gas ≤ 1.6 bar (160 kPa) absolute pressure
– Auxiliary gas ≤ 8 bar (800 kPa) absolute pressure
If flammable gases are connected at a pressure > 1.1 bar (110 kPa), the chromatograph
and the gas line must be purged with process gas prior to analysis.
Flammable gases which are explosive under the analysis conditions even with the
exclusion of oxygen (acetylene and ethylene oxide), may only be present in the
analyzed mixture in concentrations that are uncritical for safety-related engineering.
Acetylene and ethylene oxide can be present in a concentration up to 100%.
The permissible ambient temperature range is -30° to +55° C.
The temperature range for continuous operation is -20 °C to +50 °C.
2.4 Protection against explosion
MicroSAM
14
Operating Instructions, 06/2012, C79000-G5376-C560-07
Table 2- 1
Case examples for explosion protection
Case
no.
Concen-
tration of
oxygen
in normal
operation
Transient
concen-
tration of
oxygen
(not normal
operation)
Permis
sible
carrier
gases
Sample
pressure
(absolute)
External
flame
arrester
Substances
that are
explosive
under
exclusion of
oxygen
Process
medium
zone x
MicroSAM
(7KQ3101)
SITRANS
CV
(7KQ3105)
1
0 ... 2 %
0 ... 2 %
H2, He,
N2, Ar
1.0 ... 1.6 bar
Not
required
Not allowed
Not
explosive
x
x
2
0 ... 2 %
0 ... 21 %
H2, He,
N2, Ar
1.0 ... 1.6 bar
Not
necessary
Zone 1
x
3
0 ... 21
%
0 ... 21 %
H2, He,
N2, Ar
1.0 ... 1.1 bar
Required
Not allowed;
with the
exception of
acetylene
and ethylene
oxide up to
100%
Zone 0
x
4
0 ... 4 %
0 ... 4 %
He, N2,
Ar
1.0 ... 7 bar
Not
necessary
Not allowed
Zone 1
x
x = applies to the product
Identification of explosion protection
The gas chromatograph has a flameproof enclosure. With the flameproof enclosure, the
housing resists an internal explosion pressure.
The housing of your gas chromatograph has a rating plate which identifies the explosion
protection.
This device is approved for a sample gas inlet pressure of 1.6 bar absolute (160 kPa) in
accordance with ATEX II 2 G Ex d IIC T4.
2.4 Protection against explosion
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
15
Release version base device and the associated explosion protection
Release
version
base
device
New features of the basic device
Protection against explosion
Explosion protection certificate
Supplements
ATEX II 2 G EEx d IIC T4
ATEX
DMT 03 ATEX E 069 X
Supplement 1 to 3
FM
Class I, Div 1, Groups A, B, C, D T4
Class I, Zone 1, Group IIC T4
FM
Certificate 3017424
Date Issued 2005/12/14
CSA
Class I, Div 1, Groups B, C, D T4
CSA
Certificate 1915614
Date Issued 2007/06/07
AS 08
Live dosing, range of supply
voltage extended:
24 V DC (18.5 V ... 30.2 V)
Enclosure Type 4X
ATEX II 2 G EEx d IIC T4
ATEX
DMT 03 ATEX E 069 X
Supplement 1 to 3
FM
Class I, Div 1, Groups A, B, C, D T4
Class I, Zone 1, Group IIC T4
FM
Certificate 3017424
Date Issued 2005/12/14
CSA
Class I, Div 1, Groups B, C, D T4
CSA
Certificate 1915614
Date Issued 2007/06/07
AS 09
eLive injection: Introduction of a
5th solenoid valve, modification
of the micro-diaphragm valve
Enclosure Type 4X
ATEX
II 2G Ex d IIC T4 Gb
DMT 03 ATEX E 069 X
ATEX
DMT 03 ATEX E 069 X
Supplement 1 to 4
FM Certificate canceled
CSA
CLASS I, DIVISION 1 GROUPS B, C,
D T4
CLASS I, ZONE 1 GROUPS IIC T4
CSA
Certificate 1915614
Date Issued 2009/11/13
AS 10
Modified 3rd temperature control
system (model with temperature
protection)
Modified 4th temperature control
system (model with temperature
protection)
ENCLOSURE TYPE 4X / IP65
2.4.2
Directives for operation
Switching on the chromatograph
Only switch on the power supply to the device if this has been closed correctly.
2.4 Protection against explosion
MicroSAM
16
Operating Instructions, 06/2012, C79000-G5376-C560-07
Opening the housing with the power supply switched off
WARNING
Explosions
If you open the housing prematurely, explosions may occur due to hot components and
residual electrical charges in the gas chromatograph. A corresponding label informing you
of this is present on the device.
Before opening the housing in a hazardous area, disconnect the device from the power
supply.
It is essential that you wait for 60 minutes following switching off of the power supply.
WARNING
Fire permission certificate
Replacement of the backup battery is only permissible if you have a fire permission
certificate. This instruction applies regardless as to whether the gas chromatograph is
switched on or off.
Opening the housing with the power supply switched on
A diagnostics connector is located behind the status display panel. You must open the
housing in order to access it.
WARNING
Fire permission certificate
Opening the housing in the hazardous area with the power supply switched on is only
permissible if you have a fire permission certificate.
Maintenance and repair of components
WARNING
Observe the directive
Observe the regulations of directive RL 99/92/EU (ATEX 137) when carrying out
maintenance and repairs on parts associated with the explosion protection.
2.5 Qualified personnel
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
17
2.5
Qualified personnel
CAUTION
Qualified personnel
Only qualified personnel are authorized to install and use the process gas
chromatograph.
Insufficient knowledge of the operating instructions, or the complete absence thereof,
result in the deletion of all liability claims with regard to Siemens AG.
We therefore recommend owners to have the instruction of personnel confirmed in
writing.
Qualified personnel are people who are familiar with the installation, mounting,
commissioning, and operation of the product. These people have the following qualifications:
● They are authorized, trained or instructed in operating and maintaining devices and
systems according to the safety regulations for electrical circuits, high pressures and
aggressive as well as hazardous media.
● For explosion-proof devices: they are authorized, trained, or instructed in carrying out
work on electrical circuits for hazardous systems.
● They are trained or instructed in maintenance and use of appropriate safety equipment
according to the safety regulations.
2.6
Limitation of liability for external accessories
If you wish to use or connect accessories in the chromatograph which are not specifically
recommended by Siemens AG, please first obtain confirmation from Siemens AG that the
operational safety of the chromatograph is not influenced by the external accessory. Without
this confirmation, Siemens AG excludes all liability for the operational safety.
2.7
Final shutdown and disposal
It is essential to observe the environmental protection guidelines at the location of the
operating company for the final shutdown and disposal of the process gas chromatograph!
2.7 Final shutdown and disposal
MicroSAM
18
Operating Instructions, 06/2012, C79000-G5376-C560-07
Operating Instructions, 06/2012, C79000-G5376-C560-07
19
Description
3
3.1
Applications
The process gas chromatograph is used in various industry sectors, for example:
● Chemical industry
● Oil & gas
● Iron & steel
● Pharmaceuticals
● Metals, basic materials, cement
● Glass
The process gas chromatograph is a device for determining the concentration of selected
components in a process gas, and is used for measuring and analysis methods associated
with process analysis.
3.2 Product features
MicroSAM
20
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.2
Product features
Functions:
● Analysis using a micro electromechanical system (MEMS).
● Precision due to valveless live injection.
● High-resolution capillary columns.
● Very good detection limits due to high-performance detectors.
● Very good linearity throughout the complete measuring range; expensive calibration
gases can therefore be saved. Reason: several calibration gases must be used if the
linearity is poor.
● Operation:
– Using Ethernet and a PC
– Using the built-in control panel (MMI) of a MAXUM chromatograph
– Using a network access unit (NAU)
● Device can be mounted directly at the sampling point, since it has a rugged and compact
design and only a carrier gas supply and little power are required.
● Modular design and low energy consumption, thus low operating costs.
3.3 MicroSAM design
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
21
3.3
MicroSAM design
The following illustration provides an overview of the most important MicroSAM modules.
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��
��
��
��
①
MicroSAM housing
⑧
Gas connections with blanking plugs
②
Main cover
⑨
Pressure controller
③
Analysis module
⑩
RSP module
④
Lock nut
⑪
EPC module
⑤
Insulating cover
⑫
Spacer
⑥
Earthing connection
⑬
Side cover
⑦
Metal bracket
⑭
Communications and power supply cable
Figure 3-1
MicroSAM design
3.4 Rating plate design
MicroSAM
22
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.4
Rating plate design
The rating plate is located on the housing and contains the Order No. and other important
product information.
�
�
�
�
�
�
�
①
Vendor
⑤
CSA marking with CSA data
②
CE marking
⑥
IEC marking
③
Ex marking with Ex data
⑦
Serial number and release version (RV)
④
Consult operating instructions
Figure 3-2
Rating plate
3.5 Functional description of the electronics
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
23
3.5
Functional description of the electronics
Overview
The following block diagram shows the basic design of the electronics:
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3.5 Functional description of the electronics
MicroSAM
24
Operating Instructions, 06/2012, C79000-G5376-C560-07
RSP (real-time signal processing) and CAC (communication and analytical control)
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Figure 3-3
RSP and CAC
EPC (electronic pressure control)
Figure 3-4
EPC
Operating Instructions, 06/2012, C79000-G5376-C560-07
25
3.6
Functions
Predefined analysis modules are used in your gas chromatograph.
The main feature of the analysis module is the in-line detection. With the in-line detection,
columns and thermal conductivity detectors (TCD) are connected in series so that
measurements are carried out at the points where the separation of components is optimum.
The thermal conductivity detectors are half-bridges without an actual reference. Pairs of
thermal conductivity detectors are combined into a complete bridge circuit such that signals
are never superimposed.
The type and serial number of the analysis module are engraved on the rating plate on the
breathing connector, e.g. A01 124 ES04 or higher. The supplement ES04 identifies product
version 4 of the analysis module.
From release version 9 (AS09) onwards of the MicroSAM basic unit, the version eLive is
produced. In this case the basic unit has an additional membrane valve function 5 for
purging the sample loop. This extension improves control of the injection pulse position.
The following diagrams show permissible combinations of basic devices and types of
analysis modules.
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*) Modules of type A can also be used. It is necessary to modify the basic device in this
case. The corresponding procedure can be found in Section Conversion of MicroSAM basic
device AS09 (Page 94).
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.1
Gas flow charts
As of AS09, the MicroSAM gas chromatograph is manufactured as two versions: Live and
eLive.
Solenoid valves control the respective functions in the multi-membrane valve.
Gas flow chart for analysis modules A01 - A11 (live injection)
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Solenoid valve 1 (MV1)
Membrane valve function 1: "Bring sample loop to pressure of EPC 1, and purge"
Solenoid valve 2 (MV2)
Membrane valve function 2: "Purge sample loop with sample"
Solenoid valve 3 (MV3)
Membrane valve function 3: "Empty sample loop completely"
Solenoid valve 4 (MV4)
Membrane valve function 4: "Inject"
EPC
Electronic pressure control
TCD
Thermal conductivity detector
Figure 3-5
Analysis module of type A with live injection
Operating Instructions, 06/2012, C79000-G5376-C560-07
27
Gas flow chart for analysis modules D01 - D11 (eLive injection)
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Solenoid valve 1 (MV1)
Membrane valve function 1: "Bring sample loop to pressure of EPC 1"
Solenoid valve 2 (MV2)
Membrane valve function 2: "Purge sample loop with sample"
Solenoid valve 3 (MV3)
Membrane valve function 3: "Empty sample loop completely"
Solenoid valve 4 (MV4)
Membrane valve function 4: "Inject"
Solenoid valve 5 (MV5)
Membrane valve function 5: "Purge sample loop"
EPC
Electronic pressure control
TCD
Thermal conductivity detector
Figure 3-6
Analysis module of type D with eLive injection
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.2
Analysis module
Analysis module
● All analysis modules contain live injection (Live-D) and live column switching (Live-T).
● The analysis modules of series D have eLive injection.
● From product version 05 (ES05) onwards, the system for numbering the columns has
been changed.
Analysis modules up to ES04
The analysis modules up to ES04 are suitable for separating the following components:
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Analysis modules A01 to A03 up to ES04
Operating Instructions, 06/2012, C79000-G5376-C560-07
29
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Analysis modules A04 to A10 up to ES04
Operating Instructions, 06/2012, C79000-G5376-C560-07
Analysis modules from ES05 onwards
The analysis modules from ES05 onwards are suitable for separating the following
components:
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Analysis modules A01/D01 to A05/D05 from ES05 onwards
Operating Instructions, 06/2012, C79000-G5376-C560-07
31
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Analysis modules A06/D06 to A11/D11 from ES05 onwards
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.3
Example of time switching commands
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t1 ... t3
Preparation of measurement
t4, t5
Purge sample loop
t6
Inject
t7
Empty sample loop completely
t8
Purge sample loop with sample
t9, t10
Cut
t11
Backflush
Figure 3-11
Example of time switching commands
Operating Instructions, 06/2012, C79000-G5376-C560-07
33
3.6.4
Thermal release in the analysis module
A thermal release is fitted in the analysis module. This switches off the power supply for the
complete device as soon as the maximum permissible temperature of the analysis module of
155 °C is exceeded.
Note
The thermal release used cannot be reset or replaced. If the thermal release is triggered,
you must replace the analysis module.
3.6.5
Measuring sequence
The measuring sequence for live and eLive injection is always as follows:
1. Preparation of measurement (Page 35)
2. Purge sample loop (Page 39)
3. Injecting (Page 41)
4. Empty sample loop completely (Page 43)
5. Purge sample loop with sample (Page 44)
6. Cut - start (Page 45)
7. Cut - end (Page 46)
8. Backflushing (Page 47)
Operating Instructions, 06/2012, C79000-G5376-C560-07
The terms in the following table have been taken from the original English versions of the
operating software 'Maxum System Manager' and 'EZChrom'. They are used throughout the
Section 'Measuring sequence'.
Abbreviatio
n
Original English term
Further clarification
MV1
Solenoid Valve 1 – "Flush loop" or "Flush
loop_1"
Solenoid valve 1 for the function: "Bring
sample loop to pressure of EPC 1"
MV2
Solenoid Valve 2 – "Sample"
Solenoid valve 2 for the function: "Purge
sample loop with sample"
MV3
Solenoid Valve 3 – "Back flush"
Solenoid valve 3 for the function: "Empty
sample loop completely"
MV4
Solenoid Valve 4 – "Injection"
Solenoid valve 4 for the function: "Inject"
MV5
Solenoid Valve 5 – "Flush loop_2"
Solenoid valve 5 for the function: "Purge
sample loop"
Column
Capillary Column
Column
CG
Carrier gas
Carrier gas
EPC
Electronic Pressure Control
Electronic pressure control
TCD
Thermal conductivity detector
Thermal conductivity detector
Live injection
Live injection
Live switching
Live column switching
Pulse
Pulse duration in seconds for switch status
ON
ON
ON - switch status on membrane valve 1)
OFF
OFF - switch status on membrane valve 1)
1) Logic values used in the operating software.
The following table lists the significance of the colors for the gas lines used in the Section
"Measuring sequence".
Color of gas line
Assignment
Red
Sample gas
Blue
Carrier gas
Violet
Mixture of sample gas and carrier gas
Operating Instructions, 06/2012, C79000-G5376-C560-07
35
Note
Types of solenoid valves
The membrane valve functions are controlled by solenoid valves. Two types of solenoid
valves are used: open when deenergized and closed when deenergized.
Closed when deenergized: MV2 - Sample, MV4 - Injection
Open when deenergized: MV1 - Flush loop, MV3 - Back flush
Open when deenergized: MV1 – Flush loop_1, MV5 – Flush loop_2
Result
The result of the measurement is e.g. a chromatogram with time switching points on detector
TCD 2. This chromatogram shows the difference in the two procedures (live and eLive)
between the switching points t4 and t6.
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Example: chromatogram with time switching points
3.6.5.1
Preparation of measurement
Note
Time switching points
The time switching points shown on the following pages all depend on the type of
application. Only the time switching point t6 for the injection is always zero.
Operating Instructions, 06/2012, C79000-G5376-C560-07
Purging of membrane valve
Time switching point t1 = -20 s
Live
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Sample
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Injection
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eLive
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OFF
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Operating Instructions, 06/2012, C79000-G5376-C560-07
37
Backflushing of system
Time switching point t2 = -19 s
Live
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Sample
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Injection
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ON
eLive
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Operating Instructions, 06/2012, C79000-G5376-C560-07
Backflushing of system finished
Time switching point t3 = -13 s
Live
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Operating Instructions, 06/2012, C79000-G5376-C560-07
39
3.6.5.2
Purge sample loop
Live
Time switching point t4 = -10 s. The contents of the sample loop are transferred to the outlet
"Backflush" by means of the live injection.
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Sample
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Injection
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ON
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OFF
Operating Instructions, 06/2012, C79000-G5376-C560-07
eLive
In this version, the procedure is carried out in two steps at different times:
Step - 1 - time switching point t4= - 10 s: The contents of the sample loop are set to the
pressure level of the carrier gas via MV1.
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MV5
Flush loop_1
Sample
Backflush
Injection
Flush loop_2
ON
ON
OFF
OFF
OFF
Step 2 - time switching point t5 = -4 s: The contents of the sample loop are transferred to the
outlet "Backflush" by means of MV5 and the live injection.
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Injection
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ON
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ON
Operating Instructions, 06/2012, C79000-G5376-C560-07
41
3.6.5.3
Injecting
Injection time switching point t6 = 0 s: A small quantity from the sample loop is directed onto
the column system. This quantity can be changed by varying the pulse duration of the
injection valve.
Live
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Injection
ON
ON
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ON / Pulse
Operating Instructions, 06/2012, C79000-G5376-C560-07
eLive
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Sample
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ON
OFF
ON / Pulse
ON
Operating Instructions, 06/2012, C79000-G5376-C560-07
43
3.6.5.4
Empty sample loop completely
Time switching point t7 = 1.5 s: Following an injection, the injection loop is briefly emptied via
membrane valve function 3 (Backflush).
Live
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Flush loop
Sample
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Injection
ON
ON
ON / Pulse 0.2 s
OFF
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ON / Pulse 0.2 s
OFF
ON
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.5.5
Purge sample loop with sample
Time switching point t8 = 1.7 s: The sample loop is filled with a new sample.
Live
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Operating Instructions, 06/2012, C79000-G5376-C560-07
45
3.6.5.6
Cut - start
The time switching point t9 depends on the application: By reducing the pressure on the
electronic pressure control EPC 3, the sample components are transferred by live switching
into column 3.
Live with pressure EPC 3 < pressure EPC 2
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Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.5.7
Cut - end
The time t10 depends on the application: By increasing the pressure on the electronic
pressure control EPC 3, the gas components still present on column 2 are not transferred by
live switching into column 3 but are purged via TCD 2B to the outlet of the analysis.
Live with pressure EPC 3 > pressure EPC 2
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Operating Instructions, 06/2012, C79000-G5376-C560-07
47
3.6.5.8
Backflushing
The time switching point t11 depends on the application: The contents of columns 1-2 are
purged backwards via the outlet "Backflush". This step continues until the gas components
which are still present are purged out of columns 1-2.
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Operating Instructions, 06/2012, C79000-G5376-C560-07
The measuring cycle is finished when all components have left the column system.
Note
Check that all components which have been backflushed have left the column system.
Operating Instructions, 06/2012, C79000-G5376-C560-07
49
3.6.6
Cut - check
During the cut (t10 to t11), part of the sample is transferred from column 2 to column 3, e.g. in
the period from 29 s to 37 s (dashed line in the illustration).
The following illustration shows the signal response at the detectors TCD 4B, TCD 1B and
TCD 2B.
The components still present in column 2 are purged following the cut via TCD 2B to the
outlet.
You can check the setting of the live column switching at TCD 1B and TCD 2B during the
cut.
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Cut - check
Operating Instructions, 06/2012, C79000-G5376-C560-07
3.6.7
Backflushing - check
The components which are still present in columns 1 and 2 are removed from the analytical
system by the backflush process. Checking of the backflushed components is carried out at
TCD 2A.
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Backflushing - check
Operating Instructions, 06/2012, C79000-G5376-C560-07
51
3.6.8
Monitoring of the chromatograph functions
The gas chromatograph is a measuring instrument for determining the concentration of
selected components in a process gas. The intended use of the device includes checking of
correct functioning at regular intervals.
Display
Up to release version 4, the display consists of 8 LEDs. From release version 5 onwards, the
display consists of an alphanumeric display and 6 LEDs.
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Display up to and including release version 4
Display from release version 5 onwards
Note
Release version
You can find the release version of your gas chromatograph on the rating plate under "AS".
Operating Instructions, 06/2012, C79000-G5376-C560-07
The LEDs behind the inspection window of your chromatograph provide you with an initial
overview of the status of your gas chromatograph. They have the following meanings:
LED
Meaning if the LED lights up
Power
24 V supply voltage present.
Heartbeat
Software sign-of-life
Ready
Chromatograph is ready.
Maint. Req.
Chromatograph has a maintenance request.
Failure
Chromatograph has an alarm.
Sample flow
No sample flow
Health status (left)
Ethernet connection has been established.
Health status (right)
Communication is taking place.
The text box displays the following information:
1. Sample stream: S1, S2, S3, S4
2. Sample components: e.g. CO2, propane etc.
3. Measured value of sample as numeric value
Operating Instructions, 06/2012, C79000-G5376-C560-07
53
3.6.9
Temperature control systems
Previously available temperature control systems
The device previously featured three temperature control systems:
● Two temperature control systems heated the column and the detectors. They are located
in the analysis module.
● The third temperature control system heated the pneumatic connectors.
Additional fourth temperature control system
The fourth temperature control system is located on devices as of release version 10 at the
sample inlet of the MicroSAM:
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Fourth temperature control system at the sample inlet
②
Sample path in the heated copper tube
③
Access to the pneumatic connector
Operating Instructions, 06/2012, C79000-G5376-C560-07
�
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①
Fourth temperature control system at the sample inlet
②
Sample path in the heated copper tube
Why an additional temperature control system?
Depending on the dew point of the process sample, condensate can form in the sample
path. This can result in destruction of the analysis module.
From the entrance to the enclosure of MicroSAM, the preheated sample is thermostatically
controlled to the correct temperature by the additional temperature control system. The
sample path is heated by the additional temperature control system.
Operating Instructions, 06/2012, C79000-G5376-C560-07
55
Mounting
4
4.1
On-site requirements
WARNING
Explosion hazard
Only make the terminal connections and only close the device when it is disconnected from
the supply.
Only start up the device when it has been correctly connected and when the housing has
been closed.
WARNING
Use in non-hazardous areas
Make the Ex symbol permanently illegible if the device is used in non-hazardous areas.
It is essential to observe the following conditions:
● Permissible ambient temperature from -20 to +55 °C
● Maximum permissible relative humidity 90%
● 24 V DC supply voltage
● Use of appropriate lightning protection equipment
● Grounding must be possible
● Use of gas connections and the gas purity requirements as described in sections Gas
lines (Page 58) and Sample lines (Page 59).
● Protection against direct solar radiation, even when the sun is low
4.2
Space requirement
The spacing from a wall or the next chromatograph must be at least 300 mm on both sides.
The spacing from the ceiling and floor must be at least 200 mm.
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.3
Fixing
The gas chromatograph is supplied preassembled on a metal bracket.
The device is:
● Secured using four screws through four holes in the metal bracket.
● Secured using two screws through the two elongated holes in the metal bracket to allow
simple removal.
NOTICE
Note the correct mounting position
The chromatograph must always be mounted horizontally with the analysis module at
the top. When mounted correctly, the technical specifications are guaranteed, and the
text can be read in the inspection window.
If you wish to mount the chromatograph in a different position, please first contact
Siemens AG servicing personnel.
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Figure 4-1
Gas chromatograph mounting
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
57
4.4
Mounting and connecting
4.4.1
Requirements for mounting:
The following are essential for mounting:
● Gas lines, sample lines, exhaust gas lines
● Power switch, line fuse, power cable
● Equipotential bonding cable
● Communications cable
CAUTION
Do not remove the dummy plug prior to startup
Leave the dummy plugs on the gas inputs until you start up the chromatograph.
Check the correct functioning of the gas lines before you connect them to the
chromatograph!
CAUTION
Destruction of the thermal conductivity detectors
Only use the carrier gas specified in the device documentation! The thermal
conductivity detectors could be destroyed.
Do not operate the thermal conductivity detectors with bridge voltages higher than
those specified in the application data. The bridge voltages must be optimized at
minimum values in order to guarantee a long service life for the thermal conductivity
detectors The maximum bridge power is 70 mW for helium.
Note
Increasing the detection limit
If you are satisfied with a shorter service life for a thermal conductivity detector, you can
increase the maximum bridge power to more than 70 mW for helium.
Before increasing the bridge power, please first contact Siemens AG servicing personnel.
4.4 Mounting and connecting
MicroSAM
58
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.4.2
Gas lines
The gas lines are made of stainless steel with a 3 mm ∅ (1/8'').
● Use only very clean gas lines suitable for chromatography.
● Connect the gas lines to the gas chromatograph according to the piping diagram.
● Connect a stop valve upstream of each gas input to the gas chromatograph.
Gas connections on the gas chromatograph
● All gas inlets and outlets: Swagelok 1/8''.
● The gas inlets and outlets are numbered.
1
2
3
4
5
6
7
8
Figure 4-2
Gas connections
Number
Description
Comment
1
Analysis module output
Heated
2
Analysis module output
Heated
3
Sample
Heated
4
Sample
Heated
5
Carrier gas input
Not heated
6
Output from pneumatic connectors
Not heated
7
Discharge of control medium for solenoid valves and EPC
flow inserts
Not heated
8
Reserved
Unheated, closed
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
59
Note
All device-specific piping and wiring diagrams are enclosed with the device in accordance
with the order.
NOTICE
Shortening the preassembled gas lines between the housing and the mounting bracket will
void the explosion protection for the gas chromatograph.
CAUTION
Do not remove the adapters
Filters are integrated in the connections for the sample stream and carrier gas.
The adapters at gas connections 3, 4, 5 and 8 contain a R60 filter (order no. C70211-
A1677-C56) pressed into the screwed gland, and must not be removed.
4.4.3
Sample lines
● Fit the sample preparation equipment as close as possible to the chromatograph so that
the connection lines are short.
● The sample line to the chromatograph must have a downward gradient.
NOTICE
Filter for microdiaphragm valves
The microdiaphragm valves have a shorter life if the sample contains particulates.
In such cases, a filter is required as part of the sample preparation equipment.
We recommend a filter with a degree of separation for a gaseous sample of 99.99% for
1.0 μm particles.
The sample preparation equipment from Siemens AG contains such filters.
4.4 Mounting and connecting
MicroSAM
60
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.4.4
Exhaust gas lines
All exhaust gases from the chromatograph must be routed into a common line. The
individual exhaust gas lines must have a downward gradient to the common line. They must
not have a diminishing diameter.
Material of the common exhaust gas line
Stainless steel piping:
● Inner diameter of at least 12 mm (1/2")
● With welded stubs and screwed glands
● With a gradient of at least 10%.
4.4.5
Equipotential bonding cable/grounding
An equipotential bonding cable is required for explosion-proof chromatographs irrespective
of the local installation guidelines. Independent thereof, the chromatograph housing must be
grounded for electromagnetic compatibility reasons.
Procedure
1. Connect the grounding screw (symbol ) at the bottom right on the chromatograph to a
central grounding point. The permissible cable cross-section is 2.5 mm2 to 6 mm2.
2. It is essential to provide a contact washer between the cable lug and housing. The
connection must be made in the following sequence:
– Housing
– Contact washer
– Cable lug
– Washer
– M6 screw
4.4.6
Lightning protection
We recommend the installation of appropriate lightning protection equipment for the
protection of personnel and devices!
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
61
4.4.7
Installing the communications cable
Type of cable
Siemens AG recommends twisted-pair cables, 0.14 mm2 (AWG 26).
CAUTION
Protection against explosion
All cores must be connected in the terminal box.
Comment
Core color
Description
Mounting with hub1)
Mounting without hub2)
Violet
RS232 RxD / RS485 B+
Black
RS232 TxD / RS485 A-
Gray/pink
RS232 / RS485 shield
Red/blue
RS232 / RS485 GND
Brown/green
Ethernet 10BaseT TX+
Ethernet cable:
Orange/white
Ethernet cable:
Green/white
White/green
Ethernet 10BaseT TX-
Ethernet cable:
Orange
Ethernet cable:
Green
White/yellow
Ethernet 10BaseT RX+
Ethernet cable:
Green/white
Ethernet cable:
Orange/white
Yellow/brown Ethernet 10BaseT RX-
Ethernet cable:
Green
Ethernet cable:
Orange
1) Standard EIA/TIA-T568A assignment
2) Standard EIA/TIA-T568B assignment
4.4 Mounting and connecting
MicroSAM
62
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.4.8
Breathing device
The breathing device is used for pressure compensation during operation. Pressure
compensation is required due to temperature variations during operation
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Breathing connector
Figure 4-3
Breathing device
Danger
DANGER
Danger of explosion through discharged gases
In the event of a fault, all gases supplied to the chromatograph (also samples and hydrogen
as carrier gas) can be discharged via the breathing connector or a connected line. In such a
case, there is a danger to personnel, equipment and the environment!
For this reason, take appropriate measures to prevent this.
Never connect the breathing connector to the exhaust gas system.
WARNING
Do not close off the breathing device
Ensure that the breathing device is not closed during operation, otherwise:
Pressure compensation is no longer carried out.
Ex protection is no longer guaranteed.
Housing protection IP65 is only guaranteed if the pipeline connected to ① ends in a
room which contains neither splashing water nor dust.
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
63
DANGER
Danger of explosion through discharged gases
In the event of a fault, all gases supplied to the chromatograph (also samples and hydrogen
as carrier gas) can be discharged via the breathing connector or a connected line. In such a
case, there is a danger to personnel, equipment and the environment!
For this reason, take appropriate measures to prevent this.
Never connect the breathing connector to the exhaust gas system.
4.4.9
Power switch and fuse
The gas chromatograph does not have a power switch. Therefore install an external power
switch with a switching capacity of min. 2.5 A and a slow-blow fuse with a rating of 2.5 A.
Note
Fit the power switch such that it is readily accessible during operation.
4.4 Mounting and connecting
MicroSAM
64
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.4.10
Fitting the power cable
The chromatograph is supplied with a 4-m long cable. The cable has a diameter of 18 mm.
Connect all cores of the power supply in accordance with the following table since one single
core is insufficient for the maximum current. The cable must be securely routed and
terminate in a terminal box with approved type of protection.
Appropriate cable gland: M32 with a terminal areas from 13 to 21 mm.
Core color
Description
White
+24 V DC
Brown
+24 V DC
Green
+24 V DC
Yellow
+24 V DC
Gray
GND 24 V DC
Pink
GND 24 V DC
Blue
GND 24 V DC
Red
GND 24 V DC
Black
Permissible cable length
The power supply on the chromatograph must be
● up to AS07: 24 V DC (-15 ... +10%)
● from AS08 onwards: 24 V DC (18.5 ... 30.2 V)
If the power supply delivers exactly 24 V DC, and if only one chromatograph is connected,
the following cable lengths are permissible between the power supply and the
chromatograph depending on the cable cross-section (distance = half the cable length):
Core cross-section
Distance
1.5 mm2
40 m
2.5 mm2
70 m
4.0 mm2
110 m
6.0 mm2
170 m
10.0 mm2
280 m
16.0 mm2
450 m
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
65
4.4.11
Connecting of digital outputs and digital inputs
The following table is valid for devices from release version 4 onwards.
Core color
Description
Usage
Comment
Circuit diagram
White/gray
Digital input 1+
Sample flow,
24 V DC = OK,
0 V = too low
Gray/brown Digital input 2+
Application programmable
White/red
Digital input 3+ or
SSSI* SCL-Rx
Application programmable
Brown/red
Digital input 4+ or
SSSI* SDA-Rx
Application programmable
24 V DC to optocoupler
Second connection to
+24 V DC
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Brown/blue
Digital output 1+
Application programmable
White/blue
Digital output 2+
Application programmable
White/pink
Digital output 3+ or
SSSI* SCL-Tx
Application programmable
Pink/brown
Digital output 4+ or
SSSI* SDA-Tx
Application programmable
Relay contact
0.5 A / 100 V / 10 W
Second connection to
+24 V DC
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* The SSSI signals from devices are available with release version 10. The signals are used,
for example, to connect an IO extender (order no. A5E01494354). Refer to the
documentation of the IO extender for more on this. If SSSI is not used, the lines are available
for their original function as digital inputs and outputs.
The following table is valid for devices up to and including release version 3.
Core color
Description
Usage
Comment
White/gray
Digital output 1+
Gray/brown
Digital output 1-
White/red
Digital output 2+
Brown/red
Digital output 2-
Relay contact
0.5 A / 100 V / 10 W
Brown/blue
Digital input 1+
White/blue
Digital input 1-
Sample flow,
24 V DC = OK,
0 V = too low
White/pink
Digital input 2+
Pink/brown
Digital input 2-
24 V DC to optocoupler
Arc-suppression diode with inductive loads
If you connect inductive loads (e.g. valves) for digital outputs, you must connect the arc-
suppression diodes in parallel.
Type of cable
Siemens AG recommends twisted-pair cables, 0.14 mm2 (AWG 26).
4.4 Mounting and connecting
MicroSAM
66
Operating Instructions, 06/2012, C79000-G5376-C560-07
4.4.12
Connecting the HMI device
The gas chromatograph is operated using a PC or laptop.
WARNING
Protection against explosion
You require a fire permission certificate if you transport a PC or laptop through the
hazardous zone.
Opening the gas chromatograph in the hazardous area with the power supply switched
on is only permissible if you have a fire permission certificate.
Connect the Ethernet port of the PC to the corresponding leads of the gas chromatograph
(see table Installing the communications cable (Page 61)).
4.4.13
Connecting the HMI device on site (only for servicing purposes)
You must open the chromatograph in order to connect the HMI device for servicing
purposes.
Procedure
WARNING
Hazardous area
You require a fire permission certificate in order to carry out servicing work on the gas
chromatograph in a hazardous area.
Due to the hot components and residual electrical charges in the gas chromatograph,
explosions may occur if you open the housing prematurely. A corresponding warning
label is present on the device.
It is therefore essential that you wait for at least 65 minutes every time before you open
the chromatograph!
Breathing device
The breathing device must not be closed!
Only use tool to open the cover.
The directives for explosion protection specify that the cover of the chromatograph may
only be opened using a tool. These directives are complied with using the hexagon socket-
head bolt ②!
1. Loosen the hexagon socket-head bolt SW 1.5 ② on the securing ring of the inspection
window.
4.4 Mounting and connecting
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
67
2. Unscrew the securing ring. If the ring cannot be opened by hand, extend the lever arm.
To do this, insert e.g. two appropriate screwdrivers into the holes on the edge of the ring
①.
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4.4 Mounting and connecting
MicroSAM
68
Operating Instructions, 06/2012, C79000-G5376-C560-07
3. Then carefully lever the insert out of the chromatograph as shown in the following picture.
A 25-contact Sub-D socket becomes visible.
4. Connect the Ethernet connection of the HMI PC to the corresponding pins of the
chromatograph according to the following table. If the display board is removed, the
Ethernet connection via the standard cable is interrupted.
Comment
Pin No.
Description
Mounting with hub1)
Mounting without hub2)
22
Ethernet 10BaseT TX+
Ethernet cable:
Orange/white
Ethernet cable:
Green/white
23
Ethernet 10BaseT TX-
Ethernet cable:
Orange
Ethernet cable:
Green
24
Ethernet 10BaseT RX+
Ethernet cable: Green/white Ethernet cable:
Orange/white
25
Ethernet 10BaseT RX-
Ethernet cable:
Green
Ethernet cable:
Orange
1) Standard EIA/TIA-T568A assignment
2) Standard EIA/TIA-T568B assignment
Following completion of on-site operation
1. Screw in the securing ring as far as possible.
4.4 Mounting and connecting
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2. Carefully rotate the 1.5 mm hexagon socket-head bolt ② in the ring in the clockwise
direction as far as possible.
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4.4 Mounting and connecting
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Commissioning and operation
5
The following description includes the procedures for starting up and shutting down the
device, and the safety aspects which must be observed.
CAUTION
Observe the commissioning sequence!
To avoid damage to the gas chromatograph, carry out all work in the sequence given in
these instructions.
Procedure
1. Connection of gas lines (Page 72)
2. Activating the gas supply (Page 72)
3. Switching on the chromatograph (Page 73)
4. Starting the PC and operating software (Page 74)
WARNING
Explosion hazard
If you commission a gas chromatograph in an environment with an explosive
atmosphere, you must observe the directives for explosion protection.
Switch off the gas chromatograph when carrying out repairs or maintenance as soon
as atmospheric air penetrates into it, in other words:
– When the device is opened.
– When work is carried out on carrier gas lines and sample gas lines.
Also disconnect other energy sources, e.g. Ethernet and Modbus, if these do not
have an appropriate explosion-proof design.
You require a fire permission certificate if you transport a PC or laptop through a
hazardous zone and/or if you wish to open a chromatograph in zone 1.
It is essential to observe the information in Section General regulations (Page 12).
Commissioning and operation
5.1 Connection of gas lines
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5.1
Connection of gas lines
Procedure
1. Remove the dummy plugs from the gas inlets and outlets "1" to "7" of the chromatograph.
2. Connect the exhaust and gas lines according to the piping diagram.
5.2
Activating the gas supply
Requirement
All gas lines are connected and leakproof.
Procedure
1. Turn the carrier gas up to a pressure of 600 to 700 kPa.
2. Turn the sample gas up to an absolute pressure of ≤ 160 kPa.
3. If applicable, turn the calibration gas up to an absolute pressure of ≤ 160 kPa.
Commissioning and operation
5.3 Switching on the chromatograph
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5.3
Switching on the chromatograph
Requirement
The external power switch is fitted and connected as described in Section "Power switch and
fuse (Page 63)".
Procedure
Switch on the external power switch.
Response on the display up to release version 4:
Response
LED
1.
24 V DC lights up.
2.
Health Status on the right and Health Status on the left light up.
3.
Sample flow and Maint.Reg. flash together until the MicroSAM is ready.
4.
Heartbeat starts to flash when the MicroSAM is ready.
5.
Failure lights up until the temperature and pressure have reached their operating values
and any alarms have been acknowledged.
6.
Ready lights up at the end of the switch-on procedure as soon as the chromatograph is
ready.
Response on the display from release version 09 onwards:
The gas chromatograph starts. The message "Starting... " is output in the text box of the
display. When starting-up has been completed, the message disappears.
Commissioning and operation
5.4 Starting the PC and operating software
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5.4
Starting the PC and operating software
The factor setting for the IP address of the gas chromatograph is 161.218.51.xx. The subnet
mask is always set to 255.255.255.0.
Requirement
● Manually set the IP address of the PC to a value between 161.218.51.0 and
161.218.51.255 with the subnet mask 255.255.255.0.
The PC must not have the same IP address as the gas chromatograph.
We therefore recommend the IP address 161.218.51.254.
● The connection between the PC and gas chromatographs has been made, and the
Windows XP operating system has been started.
Procedure
Start the program "Maxum System Manager" (start bar Start ➜ Programs ➜ Maxum System
Tools ➜ Maxum System Manager).
Start the function "Add Unit" (Menu "System" ➜ Menu command "Add Unit") and enter the
new gas chromatographs.
Note
Operating software
The following are described in detail in the Maxum System Manager manual:
Installation of the Maxum System Manager and EZChrom operating software.
Establishment of connection between PC and gas chromatographs.
Commissioning and operation
5.5 Shutting down
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5.5
Shutting down
WARNING
Explosion hazard
Switch off the gas chromatographs when carrying out repairs or maintenance as soon
as atmospheric air penetrates into it, in other words:
– When the device is opened.
– When work is carried out on carrier gas lines and sample gas lines.
Before switching the device on again, flush the gas lines again with inert gas following
completion of the repair or maintenance work.
Note
The column system and the detector are contaminated least if the chromatograph remains in
operation. Do not shut down the device if the system is only stationary for a short time, e.g. 3
weeks. Only switch off the output devices.
If you wish to shut down the gas chromatograph, Siemens AG recommends the following
sequence:
1. Shut off all sample streams.
2. Switch off the power supply.
3. Allow the device to cool down for 65 minutes.
4. Shut off the carrier gas.
5. If you switch off the gas chromatograph for a longer period, close all outlets and inlets
with the supplied blanking plugs. Sealing prevents oxygen or water from diffusing into the
columns.
Commissioning and operation
5.5 Shutting down
MicroSAM
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Service and maintenance
6
6.1
Maintenance of analysis module
6.1.1
Removal of analysis module
Procedure
WARNING
Explosion hazard
If the gas chromatograph is mounted in a hazardous area, observe the explosion
protection regulations.
Before opening the housing in the hazardous area, switch off the power supply and then
always wait for at least 65 minutes.
Following the waiting time:
– When the surface temperatures inside the gas chromatograph have cooled down to
a temperature corresponding to temperature class T4.
– When the electric charge on the internal components has dropped to a voltage
permissible for explosion protection.
1. Loosen the 1.5-mm hexagon socket-head bolt ③ in the top cover ② by two complete
turns.
Service and maintenance
6.1 Maintenance of analysis module
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2. Unscrew the top cover ②. If the cover ② cannot be opened by hand, extend the lever
arm. Insert e.g. two appropriate screwdrivers into the holes ① on the edge of the cover.
Service and maintenance
6.1 Maintenance of analysis module
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3. Pull out the insulating cover using the handle.
Service and maintenance
6.1 Maintenance of analysis module
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4. Loosen the M14 nut ① using the supplied ring spanner A/F 21.
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Service and maintenance
6.1 Maintenance of analysis module
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5. Unscrew the M14 nut until it is flush ① as shown below.
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Service and maintenance
6.1 Maintenance of analysis module
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6. Loosen the M6 lock nut using a ring spanner A/F 10 ①.
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7. Completely unscrew the M14 nut.
8. Unscrew the screw on the pulling tool as shown below.
Service and maintenance
6.1 Maintenance of analysis module
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9. Insert the dovetail of the pulling tool behind the hexagon screw head on the analysis
module.
10. Lock the pulling tool by rotating clockwise.
11. Hold the bottom part of the pulling tool tight, and rotate the screw clockwise until the
analysis module is released.
12. Remove the analysis module from the guide pin.
Service and maintenance
6.1 Maintenance of analysis module
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6.1.2
Installing the analysis module
Procedure
CAUTION
Identical type
The type of new analysis module must be identical to that of the previous module. If the
type is not identical, the device will malfunction.
You can find the type ID:
On the white sticker of the analysis module.
On the rating plate on the ventilation opening of the device.
Example: A05-126 ES02. The first block (A05 in this case) corresponds to the module type.
1. Slide the new analysis module onto the guide pin such that the three electric plugs on the
bottom fit into the corresponding sockets.
2. Press the analysis module tight by hand.
Service and maintenance
6.1 Maintenance of analysis module
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3. Adjust the M14 nut flush as shown in the following photo at ①.
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4. Screw the M14 nut by hand onto the guide pin. Make sure that the adjustment is retained.
CAUTION
Damage to the connection
When installing the analysis module, the packing glands of the module are sealed by the
pneumatic connector. Only use the supplied ring spanner. If you apply too much force
by using a different ring spanner with a longer lever arm, the connection will be
damaged.
5. Tighten the M10 lock nut using the ring spanner A/F 10.
6. Rotate the M14 nut clockwise using the A/F 21 ring spanner until the 2.0 mm thread ②
becomes visible.
Service and maintenance
6.1 Maintenance of analysis module
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7. Attach the insulating cover.
8. Carefully screw in the cover as far as possible.
9. Rotate the 2.0 mm hexagon socket-head bolt ② in the cover ① in the clockwise
direction until it is closed.
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WARNING
Tightening the locking screw
According to the explosion protection regulations, all housing covers which have to be
unscrewed to open the housing must each be secured against unintentional opening by
a locking screw. This is achieved for this device using the hexagon socket-head bolt ②.
Before opening, loosen this hexagon socket-head bolt ②.
Following closing, tighten this hexagon socket-head bolt ②.
10. Restart the device. During the startup process, the analysis parameters are reestablished
by downloading the individual setups supplied with the analysis module.
Service and maintenance
6.2 Replacing the carrier gas cylinders
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6.2
Replacing the carrier gas cylinders
Procedure
1. Save the operating data before switching off;
refer to the software description "Maxum System Manager".
2. Switch the MicroSAM off.
3. Switch off the 24 V DC power supply.
4. Close the main cylinder valve.
5. Replace the cylinder.
6. Purge the pressure reducer several times.
7. Open the main cylinder valve.
8. Switch on the 24 V DC power supply.
9. Carry out the calibration.
6.3
Installing and removing electronic components
WARNING
Observe waiting time
Observe the regulations for explosion protection if the chromatograph is installed in a
hazardous area.
Before opening the housing in the hazardous area, switch off the power supply and then
always wait for at least 65 minutes.
Following this time, the surface temperatures within the chromatograph have cooled down
to a temperature corresponding to temperature class T4, and the electric charge of internal
components has dropped to a noncritical value.
CAUTION
Electrostatic-sensitive device
Before touching such components or devices:
Switch the chromatograph off.
Remove all static from yourself by touching an earthed object or by using an ESD
bracelet.
Only use tools free of static charges.
Do not touch pins or printed conductors. Hold modules only by their edges.
Service and maintenance
6.3 Installing and removing electronic components
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6.3.1
Removal of electronic modules
Replacing the backup battery
The gas chromatograph has a backup battery for the built-in clock.
WARNING
Explosion hazard
Observe the regulations for explosion protection if the chromatograph is installed in a
hazardous area. Replacement of this backup battery is only permissible in the hazardous
area if you have a fire permission certificate. This applies whether the gas chromatograph
is switched on or off.
Procedure
1. Remove the connector ② on the battery module.
2. Loosen the screw T30 ①.
3. Remove the backup battery ③.
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4. Install the new backup battery in the reverse order.
Service and maintenance
6.3 Installing and removing electronic components
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Removing the CAC module
Procedure
1. Hold the CAC module on the long side, and carefully lever out.
2. Make sure you do not bend the connector pins.
Service and maintenance
6.3 Installing and removing electronic components
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Removing the RSP module
Procedure
1. Disconnect all electric connections.
2. Loosen the six screws ① T30.
3. Carefully remove the RSP module ②.
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Service and maintenance
6.3 Installing and removing electronic components
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Removing the EPC module
Procedure
1. Loosen the three connectors ①.
2. Loosen the four screws T10 ②.
3. Carefully remove the EPC module ③.
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Service and maintenance
6.3 Installing and removing electronic components
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6.3.2
Installation of electronic modules
CAUTION
Note the correct mounting position
Make sure that the modules are correctly positioned when installing:
The EPC module has three plug connectors. The side on which the plug connector is
"missing" must point toward the cable gland of the chromatograph.
The RSP module has one cutout. This cutout must point toward the cable gland of the
chromatograph.
Installing the EPC and RSP modules
● Install the two modules in the reverse order to that when removing.
Installing a new CAC module
● Position the CAC module correctly above the connectors, and push in uniformly. Only
press on the two short sides (above the connectors).
Closing the housing
1. Carefully screw in the cover as far as possible.
Service and maintenance
6.3 Installing and removing electronic components
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2. Rotate the 1.5 mm hexagon socket-head bolt in the cover ② in the clockwise direction as
far as possible.
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WARNING
Tightening the locking screw
According to the explosion protection regulations, all housing covers which have to be
unscrewed to open the housing must each be secured against unintentional opening by
a locking screw ②.
Before opening, loosen this hexagon socket-head bolt ②.
Following closing, tighten this hexagon socket-head bolt ②.
3. The system parameters must be downloaded when the device is switched on again. The
procedure is described in the "Maxum System Manager" operating software manual.
Service and maintenance
6.4 Conversion of MicroSAM basic device AS09
MicroSAM
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6.4
Conversion of MicroSAM basic device AS09
A solenoid valve MV5 is fitted in the MicroSAM basic device of release version 09 (AS09).
You can also prepare the MicroSAM basic device as a GC which can be operated with
analysis modules of type A.
6.4.1
Preparation for use of analysis modules of type A
Procedure
1. Terminate measuring mode of the device.
2. Deactivate the detectors using the operating software.
3. Save the configuration in the flash memory.
4. Switch off the device.
5. Shut off the carrier gas and sample gas supplies.
6. Open the two housing covers.
7. Deinstall the analysis module type D.
8. Install the analysis module type A.
9. Remove the RSP module.
Service and maintenance
6.4 Conversion of MicroSAM basic device AS09
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10. Interchange the plugs to the solenoid valves MV3 and MV5.
Procedure: Preparation for use of analysis modules of type A
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View of EPC module
① Disconnect the solenoid valve MV5 (plug number 5).
① Disconnect the solenoid valve MV3 (plug number 3).
③ Connect the cable number "3" to the solenoid valve MV5. The cable number "5" is not
required in the configuration of type A.
11. Reinsert the RSP module.
12. Close the housing.
The basic device AS09 is now prepared for use of analysis modules of type A.
Service and maintenance
6.4 Conversion of MicroSAM basic device AS09
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6.4.2
Restoring of data for AS09 type A
Requirement
Knowledge of the Maxum EZChrom und Maxum System Manager operating software.
Procedure
1. Start up the device.
2. Start the EZChrom program (start bar Start ➜ Programs ➜ Maxum System Tools ➜
Maxum EZChrom).
3. Start the "Open" function (menu "File" ➜ Menu command "Method" ➜ "Open").
4. Download the AXX.met file from the CD "Parameter Backup CD".
5. Click in the toolbar of Maxum EZChrom on the "Instrument Setup" symbol, and select the
"Valves" menu.
6. Click on "FlushLoop" in the "Name" column, and change the name in the drop-down list to
"FlushLoop_1".
7. Repeat step 6 for all other entries with the name "FlushLoop".
8. Change the remaining parameters according to your application.
9. Save the configuration (menu "File" ➜ Menu command "Method" ➜ "Save As").
10. Export the saved data to the GC (menu "File" ➜ Menu command "Method" ➜ "Export...").
Service and maintenance
6.4 Conversion of MicroSAM basic device AS09
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The gas chromatograph has now been configured for type A analysis modules.
Note
Parameter settings
The parameters on the CD are appropriate for basic devices up to AS08. The parameters
include the settings for the solenoid valves MV1 to MV4. MV1 is preset in the software to
"FlushLoop".
From AS09 onwards, the basic device contains an additional solenoid valve MV5, and MV1
and MV5 are preset to "FlushLoop_1" and "FlushLoop_2" respectively.
When reconfiguring to a gas chromatograph with type A analysis modules, you must
therefore rename "FlushLoop" to "FlushLoop_1".
You do not require "FlushLoop_2" for a gas chromatograph with a type A analysis modules.
Service and maintenance
6.4 Conversion of MicroSAM basic device AS09
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6.4.3
Returning for use of analysis modules of type D
Procedure
1. Terminate measuring mode of the device.
2. Deactivate the detectors using the operating software.
3. Save the configuration in the flash memory.
4. Switch off the device.
5. Shut off the carrier gas and sample gas supplies.
6. Open the housing.
7. Deinstall the analysis module type A.
8. Install the analysis module type D.
9. Remove the RSP module.