Michell Instruments Measurement Systems

Industrial dew-point transmitters, optical chilled mirror hygrometers and hydrocarbon analyzers by Michell Instruments: selection of analytical devices and sensor probes.

Michell Instruments: precision hygrometers and dew-point sensors

British manufacturer Michell Instruments Ltd produces industrial moisture transmitters, chilled mirror hygrometers and process gas analyzers. Equipment from the Ely plant operates across power generation, metallurgy, petrochemical processing and metrology centers.

Precision instrumentation and analytical sensors engineered at the Ely plant in Great Britain
Continuous monitoring of trace moisture in compressed air, process gases and liquid fuels
Integration of RS485 Modbus communications, 4-20 mA current loops and alarm relays
Specification of replacement sensor cells, interface boards and housings by serial number

Michell Easidew, Easidew PRO and SF82 dew-point transmitters

Industrial dew-point transmitters of the Easidew and SF82 families provide continuous moisture monitoring in compressed air networks and process gases. Transmitters incorporate ceramic metal-oxide sensors operating across a dew-point span from minus 120 to plus 20 deg C.

Ceramic metal-oxide moisture sensing elements featuring rapid wet-to-dry response times
Easidew I.S. and Easidew PRO I.S. configurations engineered for hazardous industrial zones
Process connections with G 1/2 BSP, 3/4 UNF and 5/8 UNF threads fitted with protective caps
Sintered stainless steel and porous bronze guard caps protecting against aerosol contamination

Michell S8000 and Optidew chilled mirror reference hygrometers

Precision hygrometers S8000, S8000 RS and Optidew 501 utilize the fundamental optical chilled mirror principle for reference dew-point measurements. These instruments prevent sensor drift and deliver high repeatability with an instrumental measurement tolerance of 0.1 deg C.

Fundamental condensation optical measurement principle free from long-term sensor drift
Real-time RRS optical mirror profile inspection compensating for window deposits
S8000 Remote probe heads configured for climatic testing chambers and cleanroom facilities
Replacement miniature mirror assemblies, Peltier cooling stages and optical detectors

Michell MDM300 and MDM300 I.S. high-speed portable hygrometers

Portable industrial hygrometers of the MDM300 series enable rapid dew-point spot checks during routine inspection of gas pipelines, SF6 switchgear chambers and compressed air lines. The unit is ready for repeated checks without prolonged dry-down desiccant cycles.

Rapid moisture spot-checking in process pipelines operating under pressures up to 350 barg
Intrinsically safe MDM300 I.S. configuration suited for hydrocarbon processing sites
Self-contained battery operation providing up to 48 hours of autonomous field measurement
Replacement Swagelok quick-connect couplings, flexible PTFE sampling hoses and rugged enclosures

Michell Condumax II hydrocarbon dew-point process analyzers

Automated process analyzers Condumax II and portable testers CDP301 provide continuous monitoring of hydrocarbon dew point and moisture in natural gas at fiscal metering stations. These systems safeguard pipeline networks against hazardous hydrate plugging and liquid slug formation.

Simultaneous determination of hydrocarbon condensation dew point and trace moisture levels
Prevention of liquid dropout along transport lines and protection of gas turbine burners
Flameproof enclosure engineered for severe environmental conditions at extraction terminals
Sample conditioning trains, heated pressure regulators and patented Dark Spot sensor cells

Michell OptiPEAK, XZR400 gas analyzers and DCS calibration suites

Industrial oxygen analyzers XZR400, spectrometers OptiPEAK TDL600 and calibration stations DCS deliver rigorous monitoring of industrial gas mixtures. Systems operate in air separation units, heat treatment furnaces, pharmaceutical clean areas and calibration facilities.

Tunable diode laser absorption spectroscopy (TDLAS) for detecting trace water vapor
Zirconia and thermo-paramagnetic oxygen detectors verifying purity of nitrogen and argon
Dew-point generators and DCS calibration chambers for routine laboratory instrument checks
Replacement optical laser modules, zirconia measurement cells and fine gas flow regulators

Michell Instruments analytical systems: engineering background and industries

British manufacturer Michell Instruments Ltd headquartered in Ely has engineered precision instruments for humidity, dew-point and gas measurement for over fifty years. The manufacturing portfolio unites ceramic metal-oxide sensors, optical chilled mirror standards and process analyzers.

Instrumentation operates across cryogenic air separation, petrochemical processing, power generation and metallurgy. Sensor stability ensures continuous monitoring of industrial gases.

Michell Instruments measurement equipment is engineered for demanding industrial conditions and hazardous areas. These systems ensure early detection of moisture traces in pipeline networks and protect heavy compressors from corrosive damage.

Dew-point measurement principles and industrial moisture standards

Moisture monitoring in industrial gas streams complies with ISO 8573-1 compressed air purity standards and regional energy criteria.

Michell Instruments devices rely on direct condensation and capacitive measurement principles, delivering unambiguous dew-point determination in water vapor and hydrocarbons without mathematical guesswork. This ensures high integrity during metrological verification and fiscal gas transfer.

Selecting replacement sensors and conditioning filtration elements involves evaluating stream dynamics: working pressure, sample temperature, gas composition and particulate loads. Engineers cross-check nameplate details against manufacturer technical documentation.

Design and field operation of Easidew dew-point transmitters

Transmitters in the Easidew, Easidew PRO and SF82 families incorporate ceramic capacitive moisture sensors with ultra-thin metal-oxide layers. The sensor measures water vapor partial pressure across dew-point ranges from minus 120 to plus 20 deg C under operating pressures up to 450 bar.

Transmitter bodies are fabricated from AISI 316L stainless steel with IP66 ingress protection. Thread connections include G 1/2 BSP, 3/4 UNF and 5/8 UNF for sample cells.

Sensing elements are shielded during operation by sintered bronze caps, porous steel guards or hydrophobic PTFE membranes. Regular filter cleaning and 4-20 mA loop inspection prevent reading errors from lubricant residues.

Chilled mirror optical technology in S8000 reference hygrometers

Hygrometers S8000, S8000 RS and Optidew 501 utilize direct thermoelectric Peltier cooling of a miniature optical mirror. The exact onset of dew or frost formation is detected by an electro-optical monitoring network with 0.1 deg C accuracy.

Patented RRS dynamic balancing algorithms observe the mirror reflectivity and compensate for optical drift from window deposits.

Michell Instruments chilled mirror instruments serve as primary humidity standards across metrology laboratories globally. The measuring block resists aggressive process gas environments, while S8000 Remote modules monitor conditions directly within testing chambers.

Hydrocarbon dew-point monitoring and gas analysis with Condumax II

Online industrial analyzers Condumax II are tailored for natural gas extraction and transport utilities. The unit performs simultaneous monitoring of water and hydrocarbon dew point in gas streams at pressures up to 100 bar.

The analyzer utilizes a Dark Spot optical sensor cell detecting hydrocarbon condensate films on an etched chilled surface without false alarms.

Deploying Condumax II analyzers at fiscal transfer stations prevents condensate slugs along distribution mains and protects gas turbine burners from liquid impingement. Sampling conditioning systems incorporate heated pressure regulators and fine coalescing filters.

Calibration routines, DCS test suites and sensor exchange programs

Maintaining measurement channel accuracy requires routine calibration in accredited metrology centers. Portable HygroCal100 generators and DCS calibration benches allow transmitter calibration directly on-site or in plant workshops.

Calibration suites generate stable vapor-gas mixtures referenced against high-precision chilled mirror hygrometers.

To minimize process downtime on operating units, an advance transmitter exchange program is available. Plants receive a calibrated replacement transmitter with factory test documentation, after which the removed sensor is returned for service diagnostics.

Michell Instruments and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Michell Instruments and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.