Cermet II Hygrometer

Reliable online dew-point measurement

Cermet II is the intelligent choice for reliable on-line measurement of moisture in virtually any gas. It can compensate for variations in dew point due to changes in the gas line pressure, either by the use of a live pressure transducer input, or by the use of a pressure factor calculation input via the instrument front panel.

The instrument can display measurement units in °C or °F dew point, ppmV, lb/mmscf or g/m3 across the measurement range -100 to +20°C dew point (-148 to +68°F) at pressures up to 5000 psig.

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  • Measurement Range: -100 to +20 º c dew point
  • Accuracy: ± 1º C dew point
  • Operating Temperature: Electronics: -20 to +50 º C; Sensor: -40 to +60 º C
  • Operating Pressure: From Vacuum to 5000 psig
  • Power Supply: 85 Vac to 265 Vac or 18 Vdc to 36 Vdc
  • Output: Current, RS 232/RS 485, Relay
  • Display Units: °C or °F dew point, ppmV, Lb/mmscf or gm -3
  • Protection: IP 66
  • Optional Intrinsically safe model available.
  • Dried Compressed Gas
  • Industrial Gases
  • Welding gases
  • Glove Boxes
  • Medical gases
  • High voltage switchgear
  • …..& many more!

The Cermet I.S uses Impedence technology.

The Ceramic Sensor is constructed using state of the art thin and thick film techniques. The operation of the sensor depends upon the adsorption of water vapor onto a porous non-conducting “sandwich” between two conductive layers built on top of a base ceramic substrate. The active sensor layer is very thin - less than one micron (about 0.00004 inches) and the porous top conductor that allows transmission of water vapor into the sensor is even thinner. Therefore the sensor responds very rapidly to changes in applied moisture, both when being dried (on process start-up) and when called into action if there is moisture ingress into a process.