ApplicationsExtractive gas analysisQuality and process monitoringContiuous concentration determination of single gas components e.g. H2, CO2, O2, HeFor the H2-measurement at heat treatment in the metal industryFor the H2-measurement in miniplantsBenefitsPrecise and long-term stable thermal conductivity measurementIndependent of gas flow and gas pressureHigh sensitivity independent of the ambient temperatureFast response time (T90 approx. 1 s)Pressure resistant gas paths out of stainless steel (10 bara)Robust tight aluminium housing (IP65)Small dimensionsLinear signal output 4 to 20 mAEasy calibration with covered push buttonsFactory configuration and calibrationFeaturesBased on micromechanic silicon chipDetector mounted in a stainless steel housingStainless steel housing and electronic mounted in a sealed aluminium housingOperation of the detector with two heating elements and a temperature sensor at constant 63?°CGas concentration corresponds to required compensation energy, depending on cooling of the chip due to varying thermal conductivityEspecially good measuring results are achieved under following conditions:at binary gas mixtures, e.g. CO2 in N2, O2 in Ar or H2 in N2if only two gas components at multi component mixtures vary in concentration, e.g. CO2 in airif 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
