Alicat Scientific MC Series Operating Manual

Operating Manual Precision Gas Mass Flow Controllers MC Series MCS Series MCV Series MCR Series ...

The product complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly. Contact the manufacturer for more information. Limited Lifetime Warranty Alicat Scientific, Inc. warrants to the original purchaser (hereinafter referred to as “Buyer”) that instruments manufactured by Alicat ...

Page Installation 5 Plumbing 5 Mounting 5 Application 5 Power and Signal Connections 6 Input Signals 7 Analog Input Signal 7 RS-232 / RS-485 Input Signal 7 Output Signals 8 RS-232 / RS-485 Digital Output Signal 8 Standard Voltage (0-5 Vdc) Output Signal 8 Optional 0-10 Vdc Output Signal 8 Optional Current (4-20 mA) Outp ...

Page Operating Principle 28 Gas Viscosity 28 Other Gases 29 Volume Flow vs. Mass Flow 29 Volumetric Flow and Mass Flow Conversion 30 Compressibility 30 Standard Gas Data Tables 31 Gas Viscosities, Densities and Compressibilities at 25o C 32 Gas Viscosities, Densities and Compressibilities at 0o C 33 Troubleshooting 34 Maintenance and Recalibration 35 MC and MCR Series Technical Specifications 36 MC and M ...

contained in this manual. This will help to ensure that you get the best possible service from your instrument. This manual covers the following Alicat Scientific instruments: MC Series Mass Gas Flow Controllers MCR Series Mass Gas Flow Controllers This includes MC and MCR Series devices labeled as approved for CSA Class 1 Div 2 and ATEX Class 1 Zone 2 ...

differently depending upon the application the controller was built for. Care should be taken in moving a controller from one application to another to test for suitability in the new application. Power and Signal Connections Power can be supplied to your MC Series controller through either the power jack (power jack not available on CSA/ATEX approved devic ...

Apply analog input to Pin 4 as shown in Figure 1. Standard 0-5 Vdc: Unless ordered otherwise, 0-5 Vdc is the standard analog input signal. Apply the 0-5 Vdc input signal to pin 4, with common ground on pin 8. The 5.12 Vdc output on pin 2 can be wired through a 50K ohm potentiometer and back to the analog input on pin 4 to create an adjustable 0-5 Vdc input signal source as shown below. 7 6 5 4 3 2 1 8 5.12 Vdc 50 KOhm Po ...

(labeled 5.12 Vdc Output) as the standard 0-5 Vdc analog output signal! In fact Pin 2 is normally a constant 5.12 Vdc that reflects the system bus voltage and can be used as a source for the input signal. This allows the user in the field to run this output through a 50K ohm potentiometer and back into the analog set-point pin to create a 0 ...

5 5----------Ground--------------------------------------Ground----------8 3----------Transmit------------------------------------Receive---------3 2----------Receive-------------------------------------Transmit--------5 8 Pin Mini-DIN Port 8 1 2 3 4 5 6 7 8 9 3 4 5 6 7 8 2 Figure 3. Mini-DIN to DB-9 Connection for RS-232 / RS-485 Signals 5 3 2 Purple Red Yellow Purple Red Yellow 5 4 3 2 1 9 8 7 6 Unit C Unit B Unit A Female Se ...

available as an option on all other Alicat instruments. 1 6 5 4 3 2 Pin Function Cable Color 1 Power In ( + ) Red 2 RS-232TX / RS-485 + Blue 3 RS-232RX / RS-485 - White 4 Remote Tare Meters (Ground to Tare) Analog Set-Point Input (Controllers) Green 5 Ground (common for power, communications and signals) Black 6 Signal Out (Voltage ...

The MC (and MCR) Series Mass Flow Controller provides a multitude of useful flow data in one simple, rugged device. The MC Series can have several screen “modes” depending on how the device is ordered. All MC Series controllers have a default Main Mode, Select Menu Mode, Control Set Up Mode, Gas Select Mode (the Gas Select Mode may not be available on controllers calibrated for a custom gas or blend), ...

temperature of the gas flow being monitored. The temperature is displayed in engineering units of degrees Celsius (°C). The flow controllers use the temperature of the gas in the calculation of the mass flow rate. This parameter is located in the upper middle portion of the display under “°C”. This parameter can be moved to the primary display by pushi ...

The Control Setup Mode is accessed by pressing the center button above “Control Setup” on the Select Menu display (Fig.7) This mode allows the user to set up most parameters commonly associated with PID control. Alicat Scientific flow controllers allow the user to select how the set-point is to be conveyed to the controller, what that set-point is if control is local, and what the Proportional and Differential terms of the PID c ...

controllers. When the mass flow controller is supplied with the control valve upstream of the electronics portion of the system, the unit can be set to control on outlet pressure (absolute pressures only) or volumetric flow rate, instead of mass flow rate. Repeatedly pressing the button adjacent to the word “Loop” on the control setup screen will change ...

The gas select mode is accessed by pressing the button above “Gas Select” on the Select Menu display. The screen will appear as shown in Figure 9. PgDWN UP DOWN Gas Main C2H6 Ethane H2 Hydrogen He Helium >N2 Nitrogen N2O Nitrous Oxide Ne Neon PgUP Figure 9. Gas Select Display The selected gas is displayed on the default main mode screen as shown in Figure 6, and is indica ...

The Communication Select mode is accessed by pressing the button below “Comm. RS-232F” or “Comm. RS-485” on the Select Menu display. The screen will appear as shown in Figure 10. UP DOWN Comm. RS232F Main > UnitID ( A ) . . . . . A Baud ( 19200 ) . . . 19200 Data Rate. . . . . . Fast Select Figure 10. Communication Select Display Unit ID – Valid unit identifiers are letters A-Z and @ (see Note below). T ...

“Manufacturer Data” is accessed by pressing the “Mfg. Data” button on the Select Menu display (Figure 11). The “Mfg 1” display shows the name and telephone number of the manufacturer. The “Mfg 2” display shows important information about your flow meter including the model number, serial number, and date of manufacture. Mfg1 Main Alicat Scientific Inc. Ph 520-290-6060 Fax 520-290-0109 Mfg2 Main Mdl MC-10SLPM-D Se ...

PVM DBand (0.5% FS) . 0.5 PRESS Avg (001) . . . . 001 FLOW Avg (001) . . . . . 001 Select Figure 12. Miscellaneous Display LCD Contrast: The Liquid Crystal Display Contrast can be adjusted between 0 and 30 with zero being the lightest contrast and 30 being the darkest contrast. To change the contrast, press the “Select” button in the upper left hand corner of the displa ...

Alicat’s MCV mass flow controller is equipped with an integrated Swagelok® positive shutoff valve. The normally closed valve is air actuated and will remain closed until it is connected to an air source supplying between 60 and 120 psig of air pressure. Once the appropriate amount of air pressure is supplied to the shutoff valve, it will open, allowing flow through the mass controller. Air pressure must be removed from ...

Alicat TFT (color display) instruments have a hi-contrast back-lit LCD display. TFT instruments operate in accordance with Alicat standard operating instructions with a few notable differences. Multi-Color Display The color of each parameter is displayed on the Main Mode screen as follows: GREEN = NORMAL CONDITIONS YELLOW = OVER 100% - 128% RED = OVER 128% Each parameter (mass flow, volumetric flow, ...