Details:

Applications

Extractive 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 miniplants

Benefits

Precise 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 calibration

Features

Based 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