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Gas Monitoring Probe - ADOS GTR 196
Gas Monitoring Probe - ADOS GTR 196
Product details
Gas Monitoring Probe - ADOS GTR 196
Gas transmitters ADOS GTR 196/592 TOX/LCTR 903 are suitable for continuous gas measurement in general areas and places with explosive hazards. Harmful, flammable, inert gases, and vapors can be measured using 5 different types of sensors. The transmitter generates a current signal proportional to the measured gas concentration and transmits it to an alarm controller installed in a safe location, away from hazardous areas. The explosion-proof testing of gas transmitters was completed by the internationally renowned company KEMA.
Certification number: KEMA 03 ATEX 2403 X
European explosion-proof rating: II 2 G, EEx dme [ia] IIC T6
| Gas | Molecular formula | Range of measurement | Order number |
| Combustible gas (methane or liquefied gas) | CH4, LPG | 0-100%LEL |
A-LCTR-903-TGS A-GTR-196-TGS |
combustible gas(including hydrocarbon gases such as methane, toluene, benzene, acetone, tap water, etc.) |
CH4, CnHm | 0-100%LEL |
A-LCTR-903-VQ A-GTR-196-VQ |
| Hydrogen, helium, carbon dioxide | He ,H2, CO2 | 0-100%Vol |
A-GTR-196-GOW A-GTR-196-GOW-EX |
| Methane, carbon dioxide | CH4, CO2 |
0-100%Vol CH4 0-100%LEL CH4， C3H8 0-1，2，3，4，5% CO2 |
A-GTR-196-IR A-GTR-196-IR-EX |
| carbon monoxide | CO | 0-300ppm | A-GTR-196-TOX -CO |
| Nitrogen dioxide | NO2 | 0-30ppm | A-GTR-196-TOX -NO2 |
| nitric oxide | NO | 0-50ppm | A-GTR-196-TOX -NO |
| ammonia | NH3 | 0-250ppm | A-GTR-196-TOX -NH3 |
| chlorine | CL2 | 0-50ppm | A-GTR-196-TOX -CL2 |
| sulfur dioxide | SO2 | 0-20ppm | A-GTR-196-TOX -SO2 |
| hydrogen sulfide | H2S | 0-250ppm | A-GTR-196-TOX -H2S |
| oxygen | O2 | 0-25% | A-GTR-196-TOX -O2 |
| ozone | O3 | 0-5ppm | A-GTR-196-TOX -O3 |
| A-GTR-196-TOX -EX |
For other gases and four wire data bus LON transmitters, please contact us.
| type | TGS | VQ | GOW | IR | TOX |
| measuring principle | semiconductor | catalytic combustion | Thermal conductivity type | infrared | electrochemistry |
| application | combustible gas | CO2, H2, He, Ar |
CH4(Vol%;LEL) Propane (LEL) CO2(Vol %) |
O2,CO,Cl2,NH3,NO, NO2,SO2,H2S, O3,H2 (orOther toxic gases) |
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| measuring range | Ppm range to 100% LEL |
From 0-5mol% To 0-100Vol% |
0-100% LEL CH4, C3H8 0–100 Vol% CH4 0–1, 2, 3, 4, 5 Vol% CO2 |
Ppm range Up to 100Vol% |
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| Full-scale error | ±5% | ±3% | ±2% | ±3% | |
| temperature range | -20~+45 ℃, with sensor temperature compensation | ||||
| Temperature influence | 5% | 2% | About 8% | 2% | |
| Cross sensitivity | <2% with built-in filter |
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| Time response (T90) | About 20 seconds | About 40 seconds | <30S | <60S | |
| Pressure impact | 1% |
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| linear | <2% of full scale |
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| Repetitive accuracy | <Full scale 2% (per year) |
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| Installation location | Wall mounted, pipe mounted, or other types |
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| Sensor lifespan | permanent | About 5-15 years | 1-5 years | ||
| Supply voltage | 15V-30V | ||||
| Interface |
2-wire technology, 4-20mA (only 592 TOX) 3-wire technology, 4-20mA or bus based LON technology, electrical isolation, data transmission 78kbps |
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Explosion proof rating (optional) |
II |
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| Protection level | IP54 |
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| size | 100 * 180 * 80mm or diameter 80/height 80mm (only 592 TOX) |
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| weight | 1.1KG or 600G (only 592 TOX) | ||||
Product Features
Semiconductor (TGS) sensors
The TGS sensor consists of a semiconductor sensor constructed from Sn02 sintered N-body When combustible or reducing gases are absorbed by the sensor surface, the change in their conductivity determines the concentration of the measured gas.
Catalytic combustion (VQ) sensor
The central part of the VQ sensor operates based on the principle of thermal reaction (catalytic combustion). But when combustible gases or reducing gases or vapors are associated with measuring elements, they are affected by catalytic combustion, which increases the temperature and changes the impedance of the measuring element, which is used to measure the composition of the measured gas. Inert elements are used to compensate for the temperature and conductivity of the test gas.
● Thermal conductivity (GOW) sensor
The GOW sensor utilizes the principle of thermal conductivity. Using two rhenium tungsten resistors as measuring elements, the compared element is affected by normal ambient air while the measuring element is affected by the measured gas. Any change in gas concentration on the measuring element leads to a change in conductivity and a change in temperature. The change in resistance reflects the change in gas concentration.
Electrochemical (TOX) sensors
TOX sensor is a measurement system for electrochemical components, which measures and samples gases through diffusion. When measuring oxygen, the oxygen content decreases during electrolysis, generating a small current (electrochemical process). Under sustained air pressure, the current is directly proportional to the concentration of the sampled gas.
● Infrared (IR) sensor
The measured gas passes through a measurement chamber with an external light source and an infrared detector. When encountering gas molecules, the intensity of infrared light will decrease. The concentration of gas can be calculated based on the reduced light intensity. Because only the bands related to the measured gas are absorbed, while other bands are not absorbed. The interference of dust, aging, and other factors has almost been compensated for.
Each sensor output signal is connected and transmitted to the central controller through a multi-core cable. All sensors are plug-in and easy to replace.
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