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Physical Gas Analysis

Chemisorption at semiconductors

Measurement principle: When combustible or reducing gases are absorbed by the surface of the sensor, the concentration of the test gas is determined by the change in conductivity.
Measuring ranges: ppm ranges up to 100% LEL
Measuring components:

CH4, LPG, H2 and many others
Types of equipment: GTR 210, GTR 196, LCTR 903,
LCTR 404 LON® 

Heat Reaction

Measurement principle: Measuring the combustion heat at a fixed catalyst
Measuring ranges: from a few ppm to Vol% ranges
Measuring components: CO, CH4, NH3, C6H6, CnHm, and/or all combustible gases
Types of equipment: KM 2000 CnHmEM, GTR 210, GTR 196, LCTR 903, LCTR 404 LON®

Thermal Conductivity

Measurement principle: Measuring the different thermal conductivity between test gas and reference gas
Measuring ranges:

0-2 Vol % … 0-100 Vol %
Measuring
components:		 CO2, H2, He and many others
Types of equipment: GTR 210, GTR 196

Electrochemical Reaction

Measurement principle: Measuring the electron flow produced by chemical reaction
Measuring ranges: from a few ppm to Vol% ranges
Measuring components: CO, O2, H2S, SO2, Cl2, HCl, NH3, NO, NO2 and many others
Types of equipment: TOX 914 LON® GTR 210, GTR 196

Infrared Analysis

Measurement principle: Non-dispersive infrared analysis
Measuring
ranges:		 from 0-3,000 ppm to 0-100 Vol%
Measuring components: CO2, CO, LPG, CH4, CnHm and many others
Types of
equipment:		 GTR 210, GTR 196, LCTR 903

Photoionisation 

Measurement principle: ultra-violet measurement
Measuring
ranges:		 0-200 ppm ... 0-2,000 Vol%
Measuring components:

e.g. C7H8, C8H10, CHCl3, PH3 and others
Types of
equipment:		 GTR 210, GTR 196

Gas Measurement and Gas Warning Sensors

Measurement principle:

Chemisorption at semiconductors, Heat reaction, Thermal conductivity, Electrochemical reaction, Infrared analysis, ultra-violet measurement 
Measuring ranges: Chemisorption at semiconductors: ppm ranges to 100 % LEL
Heat reaction: from 0-5 Vol% to 0-100 Vol%
Thermal conductivity: from 0-2 Vol% to 0-100 Vol%
Electro-chemical reaction: from ppm ranges to Vol% ranges
Infrared analysis: from 0-3,000 ppm to 0-100 Vol%
Photoionisation: 0-200 ppm ... 0-2,000 ppm
Measuring components: O2, H2, CO2, CO, CH4, hydrogen chloride, helium, neon, propane, toluene, xylene and many others
Types of
equipment:
  • GW 399: multi-channel gas detector system comprising central control units and remote sensors with 4-20 mA current interface (e.g. GTR 210, GTR 196, LCTR 903) functional testing for the explosion protection parts GW 399 / GTR 196 Ex
  • MWS 906: multi-channel gas warning system for 16 two-line or three-line sensors and max. 48 relays for alarms for the activation of further warning and control units (e.g. warning banners and signal horns) 
  • MWS 906 CP: multi-channel gas warning system for 16 two-line or three-line sensors up to 2 alarm levels, each with 6 relays (five alarm thresholds for each level, independently adjustable)
  • MWS 903: Multi-channel gas warning unit for a total of 8 gas sensors and 12 floating change-over contacts (e.g. GTR 210, GTR 196, LCTR 903)
  • MWS 897: Multi-channel gas warning unit for a total of 6 gas sensors and 3 floating change-over contacts (e.g. GTR 210, GTR 196, LCTR 903 )
  • FlexADOS 914: Multi-Channel Gas Detector System for 12 two- or three-wire detectors and max. 14 floating contacts
  • FlexADOS 914 LON®: Test, Control and Warning Unit for the techniques of gas-sensorics; Connection of up to 60 LON-Bus sensors is possible
  • GTR 210 Comfort: Single-Channel Gas Warning System with integrated gas sensor