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The Model HCT 1000 resets the standard for thermal conductivity detector-based applications within the process control industry. As a flameproof enclosure transmitter, packaged within a rugged, weatherproof housing, the HydroTrans is suitable for use in harsh, hazardous outdoor environments. Using a novel, solid-state thermal conductivity sensor, this costeffective transmitter can be configured to detect H2, He, N2,Ar, CO2 or a number of other gases of interest in binary or multi-component sample gas mixtures.
| Parameters | Hydrogen % |
| Method | Thermal conductivity |
| ATEX | Nein |
| SIL | Nein |
| Range | 0 – 10 % |
| Accuracy | +/- 3 % FSD |
| Response time T 90 | 3s |
| Output | 4 – 20 mA |
| Supply Voltage | 10 – 35V |
Sensor operating principle The thermal conductivity sensor measures the concentration of a specific gas between a hot surface resistor and an ambient temperature reference resistor using the thermal conductivity coefficient of the gas itself. Sensor description The sensor structure consists of an integrated heater located on a thin electrical and thermal insulating membrane. Two thin film resistors are used for heating and measuring the temperature of the membrane. Two resistors are integrated on the silicon beside the membrane for the compensation of the ambient temperature changes. Gases which have a lower density than air (CH4) cause a decrease on the surface membrane temperature. On the other hand, gases with densities heavier than air (CO2) increase the temperature of the measuring resistor. Features
| Parameters | Hydrogen % |
| Method | Thermal conductivity |
| Range | 0 – 10 % |
| ATEX | Nein |
| SIL | Nein |
| Accuracy | +/- 3 % FSD |
| Resolution | 0,1 % |
| Flow rate | ca. 1 l/m |
| Pressure | 0,1 – 20 bar |
| Calibration | Calibration Gas |
| Response time T 90 | 3s |
| Gas temperature | 0 – 50 °C |
| Output | 4 – 20 mA |
| Supply Voltage | 10 – 35V |
| Display | Graphical Display |
| Protection Class | IP 65 |
| Connection | 6 mm |
| Dimensions | 120 x 160 x 65 |
| Weight | 2 Kg |
Your satisfaction is our top priority. That is why we have made it our mission to offer our customers a comprehensive portfolio. We are happy to conduct detailed consulting and coordination discussions in order to find optimal solutions for your concerns together in cooperation with you. Through our years of experience in gas analysis and moisture measurement we are your ideal partner.
