IGM-12
The gas analyzer is designed for automatic, continuous measurement of the concentration of explosive hydrocarbon gases or carbon dioxide in the surrounding atmosphere. The instrument is calibrated for explosive gases with methane, propane or hexane. Designed for permanent installation.
Field of application
Explosive zones of premises and near external technological installations, in which the formation of explosive mixtures of gases and vapors with air is possible, according to GOST R IEC 60079-14-2008 and explosion protection marking 1Exd [ib] IIB T4 Gb X.
Features of the gas analyzer
Consists of a transmitter and a gas optical converter (GGO).
PGO performs all metrological operations to determine the concentration of the test gas, including the formation of a digital signal and an output analog signal of the current loop, containing information about the measured concentration. PGOs have built-in flash memory with calibration coefficients, which are automatically read when connected to a transmitter by a microprocessor, which eliminates the need for individual calibration (calibration) of converters with a transmitter.
The transmitter provides information about the measured concentration value via the digital serial interface RS-485 MODBUS® , as well as the display of the concentration of the analyzed gas on the built-in four-character seven-segment display and light indication (using indicator LEDs) of the supply voltage presence, measurement range exceeding and self-diagnosis results, and also switching the built-in relays.
The gas analyzer is also equipped with a HART-communicator connector for device control.
| Measured gas | Explosive hydrocarbon gases, incl. methane (CH4), propane (C3H8), ethane (C2H6), butane (C4H10), hexane (C6H14), pentane (C5H12), ethylene (C2H4), propylene (C3H6), benzene (C6H6), acetone (CH3) 2CO ), methanol (CH3OH), the amount of heavy hydrocarbons (for propane), as well as carbon dioxide (CO2) |
|---|---|
| Measuring range | 0-100% LEL; (0-100% Vol.% In CH4); For CO2 0-2.5% Vol. |
| Measuring principle | Infrared absorption |
| Output signals | • unified current signal (4 ... 20) mA • RS485 interface, MODBUS RTU protocol • 3 relays • HART |
| Body material | aluminum |
| Explosion protection level | 1Exd [ib] IIB T4 Gb X |
| Calibration interval | 2 years |
| Protection against external influences | IP67 |
| Working temperature | from -60о to 60оС |
| Speed of T90 | 30 sec. (40 sec. For CO2) |
| Power supply | 12 ... 36 V |
| Power consumption | No more than 1.0 W (excluding heating) |
| Additional options | • body material - stainless steel • speed T90 - no more than 10 sec. |
| Gas analyzer setup | With magnetic switch, RS-485 MODBUS |
| Gas analyzer version | The component being defined | Measuring range | Limits of permissible basic absolute error |
|---|---|---|---|
| IGM-12-01-X | Methane (CH4) | from 0 to 4.4% (from 0 to 100% NCSP) | ± (0.09% + 3% rel.) (± (2% LEL + 3% rel.)) |
| IGM-12-02-X | Propane (C3H8) | from 0 to 1.7% | ± (0.03% + 3% rel.) |
| IGM-12-03-X | N-hexane (C6H14) | from 0 to 0.5% (from 0 to 50% of the NCSD) | ± 0.05% ± 5% NKPR |
| IGM-12-04-X | Carbon dioxide (CO2) | from 0 to 2.5% | ± 0.15% |
| IGM-12-05-X | Ethane (C2H6) | from 0 to 1.25% (from 0 to 50% of the NCSD) | ± 0.125% (± 5% of NCPR) |
| IGM-12-06-X | Bhutan (C4H10) | from 0 to 0.7% (from 0 to 50% of the NCSD) | ± 0.07% (± 5% of NCPR) |
| IGM-12-07-X | I-butane (i-C4H10) | from 0 to 1.3% (from 0 to 50% of the NCSD) | ± 0.13% (± 5% of NCPR) |
| IGM-12-08-X | Pentane (C5H12) | from 0 to 0.7% (from 0 to 50% of the NCSD) | ± 0.07% (± 5% of NCPR) |
| IGM-12-09-X | Ethylene (C2H4) | from 0 to 1.15% (from 0 to 50% of the NCSD) | ± 0.12% (± 5% of NCPR) |
| IGM-12-10-X | Propylene (C3H6) | from 0 to 1.0% (from 0 to 50% of the NCSD) | ± 0.1% (± 5% of NCPR) |
| IGM-12-11-X | Benzene (C6H6) | from 0 to 0.6% (from 0 to 50% of the NCSD) | ± 0.06% (± 5% of NCPR) |
| IGM-12-12-X | Acetone ((CH3) 2CO) | from 0 to 1.25% (from 0 to 50% of the NCSD) | ± 0.13% (± 5% of NCPR) |
| IGM-12-13-X | Methanol (CH3OH) | from 0 to 2.25% (from 0 to 50% of the NCSD) | ± 0.28% (± 5% NKPR) |
| IGM-12-14-X | Methane (CH4) | from 0 to 100% | ± (0.05% + 4% rel.) |
