JCT FTC130-TRA Thermal Conductivity Detector

Applications

• Extractive gas analysis
• Quality and process monitoring
• 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