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The Cermet II IS hygrometer from Michell Instruments is an integral part of a portable gas filling plant, developed by Dominion Gas.

The Portable Gas Trans-fill System (PGTS) operates both on and offshore in the harshest of environments.

Dominion has used the instrument in a variety of applications over a number of years – such as the monitoring of welding mixes, CNG and natural gas – in process and storage applications.

Designed for the measurement of the moisture content of flammable and non-flammable gases within hazardous areas, the Cermet II IS comprises an intrinsically safe transmitter, Transmet IS, and a safe-area control unit.

Housed in a stainless-steel case, the Transmet IS transmitter offers ingress protection to IP66 (NEMA 4X).

The control unit is a 19in sub-rack unit containing display, transmitter power supply and isolation barriers suitable for location in a designated safe area.

It provides all necessary user interfacing, including multi-unit display, alarms, and analogue and digital outputs.

Control unit and transmitter are connected by up to 500m of cable via galvanic isolation barriers.

The Cermet II IS is one of a range of dew-point and moisture-measurement instruments and analysers manufactured by Michell Instruments.

It is easy to install and self-contained, making it suitable for use in applications such as the PGTS.

Michell Instruments

Michell Instruments is an international leader in high-precision sensing with over 35 years’ experience in the field, specialising in instrumentation for dew point, relative humidity and oxygen analysis. The company serves industries as diverse as petrochemical and pharmaceutical to power generation and food processing. The product range includes:

  • High-precision ceramic moisture sensors to measure trace moisture in process applications.
  • Relative humidity transmitters and sensors for use in HVAC applications, pharmaceutical storage and other production processes where controlled environmental conditions are crucial.
  • Humidity calibration systems and reference dew-point hygrometers enable customers to carry out the calibration of portable hygrometers and relative humidity instruments in-house, saving on downtime and costs.
  • Zirconia and thermo-paramagetic oxygen analysers for combustion optimisation, maintaining gas purity, controlling levels of CO2 in breweries and many other applications.
  • Condumax II Hydrocarbon dew point analysers ensure the quality of natural gas at custody transfer, prevent gas burner failure and the prolong the life of process equipment, helping companies save millions of dollars on repairs and downtime.
  • Trace moisture in hydrocarbon liquids analysers are available in explosion-proof and instrinsically safe versions and allow the continuous measurement of moisture content in a wide range of applications from transformer oil, petrochemical factions and pure hydrocarbons.
  • Process moisture analysers provide continuous on-line measurements of trace moisture in process gases and are available as explosion-proof, instrinsically safe and laboratory versions.

Michell Instruments has three manufacturing locations: Oosterhout, The Netherlands; Lyon, France and Ely, UK. The company has an extensive network of factory-trained application engineers, subsidiaries and distributors stretching across 56 countries.

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