Thermal Conductivity for Process Analytics

Precise and long-term stable gas analysis according to the thermal conductivity measuring principle. Microprocessor based 128 x 64 point graphic display. Operation via 3 keys or PC-based service program. Small robust aluminum housing for field operation (protection class IP65). Linear electrically isolated current output 4 to 20 mA, start and end point concentration freely selectable 3 configurable relays for alarm message and device status Precise linearisation for binary gas mixtures like e.g. H2, He, COz, CН4 in Ne or Ar in the permanent storage; additional customer specific lineari- sation with polynomial of 6th order Indication in ppm or Vol.-%, resolution adjustable up to 1 ppm Pressure resistant and vacuum leaktight gas path out of stainless steel (SS316Ti). High sensitivity e.g. O to 0.5 Vol.-% H2 in N2; noise < 10 ppm H2 in N2. Durable measuring cell. Multi gas mode. Offsetting the cross sensitivity of an interfearing component possible. Quick response time (T90 < 1 s). Comfortable menu and operater navigation at calibration and parameterisation Classic two-point calibration or one-point calibration RS232-access to all (measuring) data and parameters Corrosion and condensate protection for sample gas path availalbe Up to 6 years lifetime for optional O2 sensor

Applications

Technical Specifications

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. 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 (To 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.

Applications

Technical Specifications