Dew-Point Transmitters

• Dew-point sensors are easy to install and maintain

• Measure dew point, moisture content and trace moisture in both gases and hydrocarbon liquids

• Available with a sensor exchange program to minimize maintenance time, they are reliable and cost-effective.

• Ceramic Metal-Oxide Moisture Sensor covers extremely dry parts per billion measurements (-120 °C dew point)

• Polymer moisture sensor operates between -60 and +60 °C dew point and provides very fast responses to changes in moisture

• Base transmitters can be supplied with sample conditioning systems for reliable and consistent measurements and displays for easy operation

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Portable Hygrometers

• Designed for daily use in demanding industrial environments they are housed in tough, durable cases rated to IP66/NEMA 4. Long battery life allows up to 48 hours of standard operation between charges and is ideal for field use in remote locations.

• Calibrated traceable to National Standards (NPL and NIST). Alternatively, they can be calibrated in our UKAS Accredited calibration lab in accordance with the ISO17025 standard for testing and calibration laboratories.

• Appropriate sample conditioning ensures optimal performance from your portable dew-point hygrometer. 

• Easidew Portable and MDM50 both feature an integral sample conditioning system, while various sampling options are available for the MDM300 and MDM300 I.S.

• The portable trace moisture hygrometers use Easidew and SF82 Dew-Point Transmitters, which are part of Michell’s sensor exchange programme. Under this scheme, users can keep their instruments fully calibrated with the minimum of downtime.

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Precision Chilled Mirror Reference Hygrometers

• Chilled mirror dew-point hygrometers measure the actual formation of liquid water on a temperature-controlled surface to determine the dew-point of the sample gas. 

• Optimized for specific applications that require high-temperature or humidity, trace moisture or fast-response.

• The S8000 and Optidew ranges share a common HMI and operating system making it simple for operators to transition between instruments. 

• The operating system is intuitive, and the touch screen display makes setting parameters and logging quick and easy to do.

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Humidity & Temperature Calibration

• For cost-effective humidity calibrations on-site, these stable and reliable humidity generators can be used in combination with a chilled mirror reference for full traceability. 

• Fully automatic, computer-controlled humidity calibration systems provide humidity generation, a climatic chamber and chilled mirror reference for professional calibrations.

• Complete dew-point calibration package with optional compressor, dryer, dew-point generator, reference instrument and optional manifold. Capable of providing trace moisture calibrations down to -100 °C dew point

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Trace Moisture Analyzers for Natural Gas Quality & Petrochemical Applications

• Levels of moisture in natural gas are tightly controlled by international quality standards. The moisture analyzers provide online dew-point measurements of to ensure producers and gas transmission networks meet these requirements. Monitoring the moisture in the gas helps operators to save energy on natural gas dryers. Portable dew-point analyzers allow for spot checks at critical measurement points.

• Moisture affects the quality of petrochemical products, disrupts processes and may lead to corrosion. Online process moisture analyzers not only improve quality but reduce the need for unscheduled maintenance or stoppages by avoiding damage to equipment and materials.

• The analyzers and sampling systems meet the hazardous area safety standards from ATEX, IECEx, FM, cCSAus and GOST. 

• The enclosed sample systems not only protect the instruments from weather but can also include heating and cooling systems to maintain optimum operating temperatures. As well as the standard stainless-steel sampling systems, Michell’s Systems Engineering department also provide custom designs for specific applications or combinations of instruments.

Hydrocarbon Dew-Point Analyzers for Natural Gas

• The Condumax II is based on the patented Dark Spot chilled mirror sensor for fully automatic measurements of hydrocarbon condensate formation. We developed the Dark Spot™ hydrocarbon dew-point sensor in collaboration with Shell Research, and this now the accepted industry standard for fully automatic measurements of natural gas quality. For water dew-point measurements, it uses Michell’s Ceramic Metal-Oxide Moisture Sensor.

• Standard and custom-designed sampling options are available. These include combinations of flow, temperature and pressure control as well as enclosure heating to ensure optimal sampling conditions.

• The instruments are certified for use in zone 1 and zone 2 hazardous areas, with certification from IECEx, ATEX, CCSAUS, CQPSUS, and GOST Ex. 

Moisture in Hydrocarbon Liquid Analyzers

• The Liquidew moisture in liquid analyzers are based on Michell’s Ceramic Metal-Oxide Moisture Sensor. This versatile moisture sensor is capable of both moisture in gas as well liquid measurements and means that the Liquidew analyzers are eligible for the sensor exchange program.

• The moisture analyzers are designed for flammable and non-flammable liquid within hazardous areas. They carry global hazardous area certification from IECEx, ATEX, cCSAus, TR CU, FM and GOST.

• Sample conditioning is essential for getting the best accuracy for moisture measurements in hydrocarbon liquids. Michell offer fully enclosed or panel-mounted sampling systems which feature flow control and particulate filtration.

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SF82 Dewpoint Transmitter

• Rugged design for wet environments and high humidity

• -76°F to +140°F (-60°C to +60°C) dewpoint range

• 0 to 24,000 PPMv moisture content

• Linear 4-20 mA signal, MODBUS RTU digital output (optional)

• 2-wire loop powered configuration

• Accuracy to ±3.6°F

• NIST traceable

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Pura High Purity Gas Dewpoint Transmitter

• Measure trace moisture in high purity gases

• Dewpoints from -184°F (<1ppbv) to -40°F

• VCR gas connection ports

• 4-20mA and RS485 outputs

• Pressures from 10-9 Torr to 3500 PSIG

• Internal 0.25 Ra µm electro-polished finish

• Fast response

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HygroPort Portable Hygrometer

• Dewpoints from -148°F to +68°F

• Rugged thermoplastic case; NEMA 4 rated

• Digital display, user selectable ranges and units

• Fast-responding internal sensor

• Second process input channel (4-20 mA) for external transmitters

• Internal data logging facility (log up to 320,000 points)

• Bluetooth wireless interface to application software

• 1/8" NPT inlet and outlet gas connections; stainless steel gas wetted parts

• 20 micron stainless steel sintered disk filter in the inlet port

• Pressure and temperature compensation capabilities

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HygroPort I.S. (Intrinsically Safe) Portable Hygrometer

• FM/CSA certified for Class I, Division 1, Groups A, B, C, D hazardous environments

• Dewpoint measurements from -148°F to +68°F; ±1.8°F typical dewpoint accuracy

• Fast-responding internal ceramic sensor

• Second process input channel for external transmitter

• Internal data logging facility (log up to 320,000 points)

• Bluetooth wireless interface to application software

• 1/8" NPT inlet and outlet gas connections; stainless steel gas wetted parts

• Pressure compensated PPMv, Lb/MMSCF or g/m3 measurements

• 50 micron stainless steel sintered disk filter in the inlet port

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 Easidew Plus Portable Hygrometer

• Dewpoints from -58°F to +68°F

• Accuracy to ±3.6°F

• Pressures to 4300 PSIG

• Exceptionally fast response

• °F or °C display

• Integrated sample system

• NEMA 6 enclosure

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