Vega EL 11 Operating Instructions Manual

Specifications

Brand:	Vega
Category:	Measuring Instruments
Model:	EL 11 (Operating Instructions Manual)
File Type:	PDF
File Size:	—
Pages:	52

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Capacitive electrodes EL 4 … 20 mA - compact

Safety information Safety information The described module must only be installed and operated as described in this operating instruction. Please note that other action can cause damage for which VEGA does not take responsibility.

Capacitive electrodes EL 4 … 20 mA - compact

3 Contents Safety information ......................................................................... 2 1 Product description 1.1 Function and configuration ................................................... 4 1.2 Types and versions ............................................................... 5 1.3 Technical data ....................................................................... 7 1.4 Approvals ............................................................................ 13 1.5 Dimensions ......................................................................... 14 1.6 Type plate ........................................................................... 16 2 Mounting 2.1 Mounting instructions .......................................................... 17 3 Electrical connection 3.1 Connection instructions ...................................................... 22 3.2 Wiring plan .......................................................................... 22 4 Set-up 4.1 General adjustment ............................................................ 26 4.2 Adjustment - Oscillators CAP E32 Ex and CAP E32 H Ex ......................................... 27 4.3 Adjustment with VVO ............................................................ 30 4.4 Adjustment with HART®-handheld ..................................... 36 5 Diagnosis 5.1 Simulation ........................................................................... 44 5.2 Maintenance ....................................................................... 44 5.3 Repair ................................................................................. 44 5.4 Failure removal .................................................................... 45 Contents

Capacitive electrodes EL 4 … 20 mA - compact

Product description 1 Product description 1.1 Function and configuration Capacitive electrodes series EL detect levels of virtually any medium unaffected whether liquids, powders or pastes. This is also valid for adhesive products. The electrode measures also the level capacitance and the ohmic resistance (admittance processing). Hence also problematic medium and solids with fluctuating humidity contents can be detected. By the use of screening tubes and screen segments, inactive areas can be provided on the probe where pollution, condensation or permanent build-up do not influence the measuring result. Measuring principle Electrode, medium and vessel wall form an electrical capacitor. The capacitance of the capacitor is mainly influenced by three factors: - distance of the electrode plates (a) - size of the electrode plates (b) - kind of dielectricum between the electrodes (c) Fig. 1.1 Plate capacitor (schematic demonstration) Electrode and vessel wall are the capacitor plates. The medium is the dielectricum. Due to the higher dielectric constant figure (DK-value) of the medium against air, the capacitance of the capacitor increases with raising covering of the electrode. Fig. 1.2 Capacitance change with covered electrode a b c The capacitance change is processed by the oscillator and converted into a level proportio- nal measured value. The measured value is provided analogue as standardized, floating 4 … 20 mA-current signal, optionally also digitally with the HART®-communication protocol. The sensor can be adjusted via the integral oscillator. Optionally the adjustment with HART®-handheld or PC with VVO-adjustment software is also possible. With the continuous level measurement the appropriate level is continuously detected and converted into a level proportional signal which is either directly displayed or further processed. You require a capacitive electrode series EL with oscillator CAP E32 Ex or CAP E32 H Ex. The continuous measurement assumes a constant dielectric constant figure εr , i.e. the medium should have steady features.

Capacitive electrodes EL 4 … 20 mA - compact

5 Product description *) also Ex 0 1) applied 2) 1.4435 3) 1.4571 4) 1.4401 5) For electrodes certified for Ex-Zone 0,only PTFE and FEP are approved as isolating material 1.2 Types and versions Type EL EL EL EL EL EL EL EL EL Version 11*) 21*) 24*) 29 31*) 33 42*) 52 53 Continuous • • • • • • • • • Partly-insulated • • • Fully-insulated • • • • • • Oscillators CAP E32 EX • • • • • • • • • CAP E32 H EX • • • • • • • • • Approvals PTB 98 ATEX 2086 • • • • • PTB-no. Ex-98.E.2085 • • • • • Overfill protection acc. to WHG1) • • • • • • German Lloyd1) • • • • • • • • • Lloyds Register of Ship1) • • • • • • • • • American Bureau of Ship1) • • • • • • • • • Bureau Veritas1) • • • • • • • • • RINA1) • • • • • • • • • Mechanical connection G 1 A • • • • • • NPT 11/2" • • • • • • • • G 11/2 A • • • • • • • • Tri-Clamp 11/2“ • • Tri-Clamp 2“ • • • • • Bolting DN 50 • • • Flange • • • • • • • • Flange plated • Screw adapter PP • • • • • PTFE • • • • Electrode material Steel • • • • • • • StSt •2) •2) •2) •3) •3) •4) •2) •2)

Capacitive electrodes EL 4 … 20 mA - compact

Type EL EL EL EL EL EL EL EL EL Version 11*) 21*) 24*) 29 31*) 33 42*) 52 53 Isolation material5) PTFE • • • • • • PP • • PE/PA 12 • PFA • FEP • • PE • Concentric tube Steel • • • StSt (1.4435) • • • Screening tube (option) Steel • • • • • • • • StSt • • • • • • • • Temperature adapter (option) Steel • • • • • StSt (1.4435) • • • • • PA • • • • • • • Housing material Plastic • • • • • • • • • Aluminium • • • • • • • • • Others Adapter 6) • • • • Overvoltage protect.-option CB-2-36 (integrated) • • • • • • • • • Overvoltage arrester 7) • • • • Bending of electrode 8) • •9) *) also Ex 0 1) applied 2) 1.4435 3) 1.4571 4) 1.4401 5) For electrodes certified for Ex-Zone 0, PTFE and FEP are only approved as isolation material 6) For combustible liquids in pressurized vessels, e.g. liquid gas, ammonia 7) For high electrostatic discharges, e.g. plastic granules 8) Bending max. 90° 9) EL 21 only with PTFE at 3,2 mm isolation thickness Product description

Capacitive electrodes EL 4 … 20 mA - compact

7 Product description 1.3 Technical data Housing Housing material plastic PBT (Polyester) or Aluminium plastic coated Protection - plastic housing IP 66 - Aluminium housing IP 66/67 (meets both protections) Cable entry 1 piece M20 x 1,5 Terminals for max. 1,5 mm2 cross-section area of conductor Mechanical connection Material galvanized steel (St 37), 1.4571 (StSt), Aluminium Thread G 11/ 2 A or 11/ 2" NPT Flange flange versions Electrode Material EL 11 1.4435 (316 L) EL 21 steel (St 37) EL 31 1.4401 (316 L) EL 24, 42 1.4571 (316 L) Length - rod max. 3 m - cable max. 20 m Isolation see "Isolation materials" Max. tensile load (cable) - EL 31 3 KN - EL 33, 34, 42, 52, 53 3 KN Ambient conditions Ambient temperature on the housing -40°C … +80°C Medium temperature see "Medium temperature and operating pressure" Storage and transport temperature -40°C … +80°C Operating pressure see "Medium temperature and operating pressure" Oscillator CAP E32 Ex, CAP E32 H Ex Protection class II Overvoltage category III Meas. frequency 300 KHz Capacitance ranges 0 … 3000 pF

Vega EL 11 Operating Instructions Manual

Specifications

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Text of the manual

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

Capacitive electrodes EL 4 … 20 mA - compact

HiTECH Technologies, Inc.

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