For contiuous concentration determination of single gas components like e.g. H2, CO2, O2, He
For the H2-measurement at heat treatment in the metal industry
For the H2-measurement in miniplants
Benefits
Precise and long-term stable thermal conductivity measurement
Independent of gas flow and gas pressure
High sensitivity independent of the ambient temperature
Fast response time (T90 approx. 1 s)
Pressure resistant gas paths out of stainless steel (10 bara)
Robust tight aluminium housing (IP65)
Small dimensions
Linear signal output 4-20 mA
Easy calibration with 2 potentiometers
Factory configuration and calibration
Features
Based on micromechanic silicon chip
Detector mounted in a stainless steel housing
Stainless steel housing and electronic mounted in a sealed aluminium housing
Operation of the detector with 2 heating elements and a temperature sensor at constant 60 °C
Gas concentration corresponds to required compensation energy, depending on cooling of the chip due to varying thermal conductivity
Especially good measuring results are achieved under following conditions:
at binary gas mixtures, e.g. CO2 in N2, O2 in Ar or H2 in N2
if only 2 gas components at multi component mixtures vary in concentration, e.g. CO2 in air
if the measured component has a significantly different thermal conductivity than the remaining gas components, e.g. H2, He, CO2 in air or impurities in H2
