Contiuous concentration determination of single gas components 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 to 20 mA
Easy calibration with covered push buttons
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 two heating elements and a temperature sensor at constant 63?°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 two 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, or in a mixture of O2 and N2
