All Products
Michell Instruments is the international leader in the field of moisture and humidity measurement solutions. With over 30 years' experience, Michell designs and manufactures a wide range of transmitters, instruments and system solutions capable of measuring trace moisture, humidity, dew point, hydrocarbon dew-point and oxygen content in a vast range of applications and industries ranging from compressed air, power generation, process, oil and gas, pharmaceutical and many more.
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Application Notes
Liquidew EExd - Moisture in Liquids Analyzer
Complete trace moisture measurement system, providing direct, accurate, on-line measurements for moisture dissolved in process liquids. The flame-proof/explosion-proof analyzer provides single-or dual-channel measurements with a convenient display interface and easy installation. ATEX, CCSAUS and GOST certified.
HG1 - Humidity Calibrator
Low-cost, transportable calibrator for dew-point and relative humidity sensors with built in chilled mirror reference.
HG10 - Humidity Calibrator
Automatic temperature and humidity calibration system with a wide humidity generation range. Features chilled mirror reference.
Pressure Swing Dryers Principle
A source of very dry compressed air for use as a zero gas in humidity calibration systems, or for general laboratory applications.
DCS - Dew-Point Calibration System
Premium customizable rack-mounted dew-point calibration station with chilled mirror reference.
Dew-Point Generators
A range of dew-point generators offering ease of use and fast response to humidity step changes.
HygroCal100 - Humidity Validator
Fully-automated, feature-packed portable humidity validator with touch screen interface, probe read-back and power, data-logging, optional battery pack and more.
OptiCal - Relative Humidity and Temperature Calibrator
Premium transportable calibration solution for humidity sensors with built-in chilled mirror reference
S904 - Relative Humidity and Temperature Calibrator
Stand-alone and transportable humidity calibrator, for dew-point and relative humidity sensors.
S8000 RS - High-Precision Chilled Mirror Hygrometer
Our flagship chilled mirror hygrometer, capable of measuring as low as -90°C dew point in a compact, lightweight package. The sensor head is optimised for fast response to low moisture levels and features the RRS system for high sensitivity and a dew-point accuracy of ±0.1°C.
S8000 - Precision Chilled Mirror Hygrometer
A high-precision hygrometer combining straightforward operation with very high sensitivity to changes in moisture content.
Optidew 401 and Optidew 501
The Optidew 401 and Optidew 501 are chilled mirror hygrometers, designed as successors to the original Optidew instruments. The Optidew 401 is a bench top model, replacing the Optidew Vision. The Optidew 501 is wall mounted to replace the Optidew transmitter, but offer an option to have the same touch-screen interface as the Optidew 401 for easy local operation. There is also a transmitter version of the Optidew 501 without a display.
S8000 Remote - High Precision Chilled Mirror Hygrometer
With its compact remote sensor design, the S8000 Remote is the perfect reference instrument in environmental applications and climatic chambers. It features ±0.1°C accuracy across its -40 to +90°C dew-point measurement range.
Easidew PRO I.S. - Intrinsically Safe Dew-Point Transmitter
Intrinsically safe transmitter for moisture measurement in gases and liquids, supporting ppmv, ppmw and dew-point output with ±1°C accuracy. IECEx, CSA, FM, Gost K/R and ATEX certified. 5/8 UNF process connection.
Easidew Dew-Point Transmitter Series
Rugged and reliable industrial, loop-powered dew-point transmitter with a 5/8\ UNF or 3/4\" UNF process connection. The wide -100/+20°C (-110/+20°C Easidew 34) dew point measurement range makes it suitable for all industrial dryer applications. Available with MiniDIN 43650 C or M12 electrical connectors.
Easidew Online - Dew-Point Hygrometer
A cost effective ppmV / dew-point meter including an Easidew Transmitter and digital display with analogue and digital outputs and dual alarms.
Cermet II Hygrometer - Reliable On-Line Dew-Point Measurement
A full specification on-line hygrometer with wide operating range and multiple display options. Includes Cermet II transmitter, based on Easidew technology with digital output.
Obsolescence Notice from December 2022
Obsolescence Notice from December 2022
DryCheck Hygrometer / Sampler - Self-Contained Dew-Point Instrument
A simple and efficient, self-contained dew-point hygrometer based on Easidew technology, with filtration and flow control, for measurement of dew point or moisture content.
Easidew 34 - Dew-Point Transmitter
Rugged and reliable industrial, loop-powered dew-point transmitter with the US industry standard 3/4\ UNF process connection. The wide -110/+20°C dew point measurement range makes it suitable for all industrial dryer applications."
Easidew I.S. Dew-Point Transmitter - For Hazardous Area Applications
Intrinsically safe dew-point transmitter, based on field-proven Easidew transmitter technology. IECEx, CSA, FM, Gost K/R and ATEX certification makes the Easidew I.S. ideal for all global hazardous area applications. 5/8\ UNF G1/2\" BSP or 3/4\" UNF process connections."
Easidew Pro XP Transmitter - Explosion Proof Moisture Transmitter
Explosion proof dew-point transmitter, with ±1°C dew-point accuracy. IECEx, cQPSus, and ATEX certification makes the Easidew PRO XP ideal for a wide variety of explosion proof /flameproof rated applications. 3/4\ UNF process connection. Now available in a Service Exchange version.
ES20 Compact Sampling System - Stainless Steel Sampling System
An economical, high quality sampling system, with a variety of enclosure, filtration, pressure, and tube fitting options.
SF72-TX-Rail - Dew-Point Transmitter for Rail Applications
A cost-effective moisture transmitter designed to continuously monitor the performance of the compressed air dryers on railway rolling stock to ensure both safety and efficiency of braking and other systems.
Easidew Advanced Online - Dew-Point Hygrometer
A versatile touch-screen dew-point hygrometer with pressure compensation. This display provides analog, digital and 4 programmable relay alarm outputs with front screen or software app display configuration.
ES70 Sampling System
The ES70 series sampling system is designed to simplify system configuration by providing a set of choices for all requirements, such as panel or enclosure mount, filtering, upstream and downstream pressure and flow control etc.
Easidew Sampler - Low Cost Self-Contained Sampling System
A low-cost, self-contained sampling system, with filtration and flow control, for measurement of either pressure or atmospheric dew points.
Pura Pure Gas Trace Moisture Transmitter
Rugged and reliable dew-point transmitter designed for the measurement of trace moisture content in ultra high purity gases. Can be supplied with VCR fittings and high integrity electropolished sample block. Hazardous area IECEx, Atex, CSA, and FM certified version available. Monitor available with digital display, digital and analogue outputs, dual alarms and more.
SF82 Dew-Point Transmitter
Rugged and reliable fast response dew-point transmitter with a 5/8 UNF, ¾ UNF or G1/2 process connection. The sensor has analog and digital electrical outputs with MiniDIN 43650 C or M12 electrical connectors, which make it ideal for use in higher temperature compressor room type applications.
SF82 Online - Fast-Response Dew-Point Hygrometer
Easy to install and maintain, the SF82 Online Fast Response Hygrometer measures and displays dew point and moisture content for use in a wide range of moisture applications. The SF82 Online display provides analog, digital and dual relay alarm outputs.
Intrinsically Safe Field Display - for use with Easidew I.S. and Easidew PRO I.S.
ATEX, IECEx, and FM certified, 4-digit loop-powered local monitor for the Easidew PRO I.S. and Easidew I.S. transmitters. IP66 enclosure.
Easidew Portable - Compact and Easy to Use Dew-Point Hygrometer
Designed to make spot checks of the dew point in air and gases as simple as possible. Simply connect your sample gas, turn on the instrument and it will automatically begin to measure the dew point of the applied sample.
SF52 - Dew-point Transmitter
Fast-responding, cost effective dew-point transmitter designed for use in harsh industrial dryer applications. Available with G1/2\ or 1/2\" NPT process connections."
XZR500 - Combustion Control Analyzer
Designed to determine the excess air required for optimum combustion. Uses MSRS technology to measure oxygen levels in harsh conditions such as boilers, incinerators and furnaces, providing fast, accurate readings in high temperatures and corrosive atmospheres. The Pitot-effect sample probe negates the need for aspirator air in most applications.
XZR400 Series - Oxygen Analyzer
Designed for measurement of trace oxygen in pure gases. It is used to control the purity of gases such as Nitrogen, Argon, Helium and Carbon Dioxide during manufacture, quality in air separation plants, or for quality assessment of bought gases. Available in wall-mountable and rack-mountable versions.
XZR200 - Oxygen Analyzer
A cost effective zirconium-dioxide analyzer to measure percentage level oxygen in combustion processes, ambient air monitoring and many more applications.
XTC601 Binary Gas Analyzer for Safe or Hazardous Areas
A robust, linear and stable thermal conductivity analyzer for measurement of binary gas mixes such as air in Hydrogen, Nitrogen, Argon, Helium or Carbon Dioxide. IECEx, Atex, cCSAus & TC TR Ex certified.
XTP601 Series - Oxygen Analyzer for Safe or Hazardous Areas
A robust, linear and stable oxygen analyzer for measurements in gases such as Hydrogen, Nitrogen, Carbon Dioxide etc. With flame arrestors fitted, the analyzer becomes explosion-proof and suitable for hazardous areas with ATEX, IECEx, cCSAus, INMETRO & TC TR Ex certification.
XTC601 - Monitoring Hydrogen Cooled
Generators
A robust, linear and stable thermal conductivity analyzer for measuring the binary gas mixes present during the operation and maintenance of hydrogen cooled electricity generators.
XGA301 - Industrial Gas Analyzer
The XGA301 Industrial gas analyzer from Michell Instruments provides a convenient platform to measure oxygen, dew point, CO2 and CH4. The analyzer can be supplied in one of two bench-mounted chassis and with up to three sensors fitted.
XTC Series - Binary Gas Analyzers
A range of linear and stable thermal conductivity analyzers for measurement of binary gas mixes
such as Air in Hydrogen (H2 purity) or Carbon Dioxide in Methane (Biomethane).
XTP Series - Oxygen Analyzers
A range of linear and stable thermo-paramagnetic analyzers for measurement of oxygen in a variety of applications with background gases such as Nitrogen, Carbon Dioxide, Methane and
Hydrogen.
PCR - Portable Calibration Rig
The PCR from Michell is a transportable gas blender in a flight case, suitable for calibrating a multitude of gas analyzers at virtually any location and has been designed to allow the blending of two or three gases to the required concentration.
Condumax II On-Line Hydrocarbon Dew-Point Analyzer
Hydrocarbon dew point analyzer for ensuring quality of Natural Gas. Supplied in a flame-proof/explosion-proof enclosure and available with optional water dew point measurement, to increase safety as well as avoid damage to pipelines and turbines. IECEx, ATEX, CQPSUS, TC TR Ex certified.
Promet I.S - Process Moisture Analyzer
Instrinsically Safe Process Moisture Analyzer for high pressure, process gases and vaporized liquids on natural gas platforms and terminals, petrochemical plants and industrial gas manufacturing facilities. Up to four Promet I.S or Liqudew I.S analyzers may be combined via the Multi-Channel Control Unit. IECEx, ATEX, CSA, GOST Ex certified.
Promet EExd - Process Moisture Analyzer
Heavy-duty moisture in natural gas analyzer, housed in an flame-proof/explosion-proof enclosure, certified to ATEX, CQPSUS and GOST. Configurable for single or dual channel measurements of moisture and designed for simple installation and integration.
Liquidew I.S. - Moisture in Liquid Analyzer
Intrinsically Safe Moisture in Liquids Analyzer, providing fast and reliable on-line measurement. A wide variety of non-polar liquids can be measured continuously, on-line, including flammable liquids and petrochemicals. IECEx, ATEX, CSA, GOST Ex certified.
Condumax II Transportable - Hydrocarbon & Water Dew-Point Analyzer
Transportable hydrocarbon dew-point analyzer system for operation in the field. ATEX & CCSAUS certified for IEC Zone 1 or 2 hazardous area, NEC Class I, Division 1 Groups B, C, D.
OptiPEAK TDL600 - Moisture in Natural Gas Analyzer
Fully hazardous area IECEx, ATEX, cMETus, TC TR Ex certified TDLAS moisture analyzer for measurement in natural gas and biomethane. OptiPEAK TDL600 employs the latest techniques in non-contact laser absorption spectroscopy to provide class-leading measurement performance, stability and detection sensitivity with minimum required maintenance.
QMA601 - Process Moisture Analyzer
The next generation Advanced Quartz Crystal Microbalance analyzer from Michell Instruments is designed to provide reliable, fast and accurate measurement of trace moisture content in a wide variety of process applications where keeping moisture levels as low as possible is of critical importance.
QMA401 - Trace Moisture Analyzer
The next generation Advanced Quartz Crystal Microbalance analyzer from Michell Instruments is designed to provide reliable, fast and accurate measurement of trace moisture content in a variety of applications where keeping moisture to a minimum is of critical importance.
Condumax II and OptiPEAK TDL600
Hydrocarbon dew point (HCDP) and moisture are key quality parameters to ensure the quality of pipeline transmission gas. With the combined Condumax II and OptiPEAK TDL600 analyzer system pipeline operators have the assurance of the most widely accepted automatic hydrocarbon dew point analyzer together with the latest development of spectroscopic moisture measurement techniques in a single, convenient analyzer system.
CDP301 Condumax Dew-Point Tester
A portable dew-point tester for both water and hydrocarbon dew-point measurements.
MDM300 & MDM300 I.S. - Advanced Dewpoint Hygrometer
Easy to use, ergonomic, portable dew-point hygrometer offering rapid spot-check measurements of dew point or moisture content. Available with optional ATEX, IECEx, FM, CSA, INMETRO and TC TR Ex certification.
MDM300 Sampling Options
To get the best possible performance from your MDM300 or MDM300 I.S., it is crucial to have appropriate sample conditioning for your measurement point. Options are available to coverall common sampling requirements – from verification of dry compressed air supplies, to the measurement of natural gas downstream of a glycol contactor.
MDM50 - Portable Hygrometer
Designed to make high-speed spot check measurements to -60°C dew point as simple as possible, simply connect your sample gas, turn on the instrument and it will automatically begin to measure the dew point of the applied sample.
PCMini52 - Relative Humidity and Temperature Transmitter Mini Probe
∅12mm highly compact probe with dual voltage outputs.
PCMini70 - Relative Humidity and Temperature Mini Probe
∅19mm probes with voltage or current loop outputs.
PC33 & 52 - Relative Humidity and Temperature Transmitter Analog
∅19mm probes with voltage or current loop outputs.
PC62 & 62V - Relative Humidity and Temperature Transmitter Digital
∅19mm probes with voltage or RS232/RS485 outputs.
PFMini72 - Relative Humidity and Temperature Transmitter
∅18mm probe for outside installation with voltage outputs, optional direct 3-wire PRT temperature measurement.
DT722 - Rugged Industrial Relative Humidity and Temperature Transmitter
∅19mm fixed probe for high temperature applications. Current loop outputs. Optional integrated display.
HygroSmart I7000XP - Interchangeable Sensor for Relative Humidity and Temperature
Interchangeable sensor for relative humidity and temperature. With voltage, PT100 and I2C outputs.
H8000 - Relative Humidity Element
The H8000 capacitive polymer element is the latest generation technology, developed to reliably and accurately measure moisture in a wide range of relative humidity applications.
Portable Oxygen Analyzers for Purity Measurements
- GPR-1200 & GPR-3500
For measuring trace oxygen or gas purity at defined measurement points. Includes a four-way valve to trap the sample for faster measurement times.
Portable Oxygen Analyzers from 0.1 ppm up to 100% oxygen
GPR-1000, GPR-1100, GPR-2000 & GPR-3500 MO
GPR-1000, GPR-1100, GPR-2000 & GPR-3500 MO
Suitable for trace oxygen measurements from 0.1 ppm through to purity applications at 100% oxygen, these rugged portable instruments share the same advanced sensor technology as the online process oxygen analyzers ensuring confidence in their reliability and accuracy.
Oxygen Analyzers for Ultra-High Purity Gases
PI2-UHP 50/100 and PI2-MS 500/1000
PI2-UHP 50/100 and PI2-MS 500/1000
Accurate and stable measurements of oxygen down to low parts per trillion O2. Low cost of ownership with minimal maintenance.
Oxygen Analyzers for Industrial Gas Applications
GPR-1600, GPR-2600, GPR-3100
GPR-1600, GPR-2600, GPR-3100
High-accuracy oxygen analyzers for monitoring gas in industrial processes where trace oxygen from low parts per million to pure O2 has to be precisely measured.
Oxygen Monitors for Glove Boxes and Nitrogen Generators
GPR-1500 GB & GPR-2500 GB
GPR-1500 GB & GPR-2500 GB
Designed specifically for measuring oxygen in glove boxes from air (21% O2) down to low levels (0-10 ppm O2), this oxygen monitor range has easy installation options.
Cost Effective Trace Oxygen Analyzer: sample panel or wall-mounted
GPR-1500 Series
GPR-1500 Series
A wall mounted oxygen analyzer in a NEMA enclosure, suitable for indoor or outdoor. This single channel oxygen meter can be used with flow-through O2 cells for in-line gas analysis in safe as well as hazardous areas where ATEX approval is needed.
Wall Mounted Percent Oxygen Analyzer
GPR-2500 Series
GPR-2500 Series
Stable oxygen measurements in both safe and hazardous areas. Two measurement ranges: 0-1% O2 and 0-100% 02.
Trace Oxygen Analyzer for Process Industries
GPR-1800 IS, GPR-1800 AIS
GPR-1800 IS, GPR-1800 AIS
Intrinsically safe trace oxygen analyzers where an oxygen sensor with a low detection limit is required. Simple to use with minimal maintenance.
Process Oxygen Analyzers for Hazardous Areas
GPR-2800 Series
GPR-2800 Series
For measurements of O2 from 0-1% up to 0-25%, certified by UL and ATEX for use in hazardous areas. Modular sampling systems available.
Easy to operate Hydrogen Sulphide Analyzers
GPR-7500 and GPR-7100
GPR-7500 and GPR-7100
Cost-effective H2S analyzers for fixed installation or spot-checking processes. Accurate and reliable measurements of hydrogen sulphide, with certification from ATEX and UL.
Fixed Ambient Oxygen Deficiency Monitors
GPR-35, GPR-2500 SN (ATEX), GPR-2800 IS
GPR-35, GPR-2500 SN (ATEX), GPR-2800 IS
Reliable oxygen deficiency monitors for measuring O2 concentration to prevent risk of asphyxiation in rooms or confined spaces where there is a potential for gas leaks.
MultiDetek 2 Compact Gas Chromatograph
Designed for both industrial and laboratory use, MultiDetek 2 measures multiple trace impurities,
with many configurations possible in the same instrument. Based on the new generation of LDetek’s Plasma Emission Detector,
versions are also available featuring FID and TCD sensors to extend the measurement capabilities. MultiDetek 2 uses argon, helium or nitrogen as carrier gases.
LD8000 Online trace nitrogen and/or oxygen in argon, helium and crude argon analyzer
The LD8000 is an online analyzer to monitor trace N2 and/or O2 in Ar/He/Crude Argon. A combination of plasma emission and electrochemical technologies achieves a complete, easy to operate and cost effective solution inside one compact 3U cabinet.
LD8000 Plus Online trace nitrogen in argon/helium analyzer
The LD8000-Plus is the ideal gas quality control instrument and will be used to detect trace nitrogen in ultra-pure Argon or Helium. Its integrated ppb sub-system enables unique and very cost-effective performance: low ppb trace nitrogen analysis without the need of a gas chromatograph.
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LD8000 Multigas, Trace nitrogen, oxygen, moisture, hydrocarbons in helium
Designed to monitor trace N2, O2, H2O, CnHm in Helium, the unit is compact and easy to install. Typical applications include: helium cryogenic installations, cryogenic truck loading stations, helium liquefaction plants as well as more general process control and research laboratories.
LD2000 Online trace total hydrocarbon analyzer
The LD2000 is an easy to use instrument that offers the ideal solution for total hydrocarbon measurements. Compact and robust, it is designed for industrial installations. The LDetek Flame Ionisation Detector (FID) and electronic platform provide the performance quality required by the market.
LD8000-TCD Binary Gas Analyzer
The LD8000-TCD is a Thermal Conductivity-based Gas Analyzer used to measure and monitor binary gas streams. It can also monitor one component in a more complex gas mixture when the background gases have the same ratio to each other, or have similar thermal conductivity values.
LDP1000 Gas Purifier for Noble, Nitrogen and Hydrogen Gases
The LDP1000 series is a sub ppb purifier used for generating high purity calibration gas for online analyzers as well as generating high purity carrier gas for gas chromatograph. Designed with two steps of purification, this purifier design ensures no undesired impurity is released during process.
LDGSS High Purity Gas System Selector
The LDGSS now brings to the gas industry the most reliable and easy way to provide clean gas to any process GC and on-line process analysers. Its compact design, based on high purity connections with an unique diaphragm valve with no dead volume, is the ideal solution for any stream selection needs. This concept allows a quick response time, the possibility to work in vacuum mode and avoid drifting problems.
LDGDSA Automatic Gas Dillution System
The LDGDSA is a user-friendly gas dilution system that offers flexibility to automatically generate the desired gas mixtures. The Windows user interface gives the ability to control and monitor the mixtures, flows, pressures and concentrations remotely.
HYGROFLEX4 - HF4
Measures relative humidity and temperature and calculates the dew/frost point in the fields of HVAC and industry.
HYGROFLEX5 - HF5
The HF5-series is compatible with HygroClip2 probes with integrated AirChip3000 technology.
HYGROFLEX1 - HF1
The HygroFlex1 series is the latest development in inexpensive HVAC transmitters for relative humidity and temperature.
HYGROFLEX1 - HF1
The HygroFlex1 series is the latest development in inexpensive HVAC transmitters for relative humidity and temperature.