IGM-12 fixed optical gas detector

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 User manual

 

Description

IGM-12  is designed for automatic continuous measurement of the concentration of explosive hydrocarbon gases or carbon dioxide in the surrounding atmosphere.

Application area is explosive zones and zones near external technological installations with possible formation of explosive mixtures of gases and vapors.

 

Main features

  • Easy mounting and wiring
  • Bright four digit seven-segments LED display and 4 LED for status indication
  • Wide temperature range of operations
  • Wide range of output signals: RS-485/ 3 Relays/4-20 current loop/ HART
  • Easy magnet calibration
  • Microprocessor based transmitter and detection unit
  • Self-diagnostics algorithm firmware
  • Stable optcal sensors technology
  • IP67 full resistance
  • Explosion proof type “d”
  • Power and cost effective solution

 

Technical specification

General

Gas sampling method:

Diffusion

Operating principle:

Non-Dispersive Infra-Red (NDIR)

Target gas

CH4

C3H8

C2H6

CnHm (heavy hydrocarbons)

C02

Operating conditions

Relative humidity

up to 98%

Atmospheric pressure

80-120 kPa

Temperature range

 -60... +60 °C

Storage and transportation conditions:

Relative humidity

up to 96%

Atmospheric pressure

80-120 kPa

Temperature range

 -65... +60 °C

Overall dimensions

240×200×130

Weight

2,5 kg (AL)

3,5 kg (AISI 316)

Ingress Protection Rating

IP67 acc. IEC60529

Housing

Aluminium

Stainless steel (optional)

Calibration

Digital RS485/ Front panel magnets

Free fall

IEC 68-2-32, 1000 mm

Vibration - sin

IEC 60068-2-6

MTBF

10 000 hours

Lifetime

15 years

Measurement

Measurement range

100%Vol (CH4 only)

100%LEL

2.5%Vol (C02)

Accuracy

±0.1 % Vol  or  ±5 %  of indication

±3 % LEL  or  ±5% of indication 

Response time, T0.9

10s

30s

60s

Temperature performance

IEC 60079-29-1

Pressure performance

Humidity performance

Electrical

Supply Voltage Range

12 ...32 VDC

Indication

4 LEDs front panel , 4 digit seven-segments LED display

Output signals

RS-485 Modbus RTU, 4-20 mA, 3 Relay output

Power consumption:

40 oC),  oC)

Warm-up time:

not more than 60 s

EMC

Severity level 2 EN/IEC 61000-4-6, EN/IEC 61000-4-11

Marking and standards

1Exd IIB T4 acc. to IEC60079-0, IEC60079-1, IEC60079-11

 

Overall dimensions of IGM-12