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Michell Chilled Mirror Reference Hygrometers

Michell Instruments are leading experts in humidity and trace moisture measurement, provide a comprehensive suite of temperature and humidity calibration equipment and systems.

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Their offerings include portable humidity generators for easy verification of relative humidity, temperature probes, pressure swing dryers, and low dew point generators for calibrating trace moisture sensors and instruments. In addition to custom-designed humidity and dew-point calibration systems, they also offer ISO/IEC 17025 accredited relative humidity and temperature calibrations at six locations globally.

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Chilled Mirror Reference Hygrometers

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Michell Instruments’ chilled mirror reference hygrometers deliver fundamental, low-drift dew-point measurements. When used with Rotronic or Michell humidity generators, they enable calibrations that are traceable to NPL and NIST national standards.​

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Michell Optidew
 

  • New chilled mirror hybrid sensor gives fast dynamic response to changes in humidity

  • Accurate to ±0.15°C dew point, ±0.1°C temperature

  • Wide measurement range from -40 to +120°C dew point

  • Choice of communication methods, including Modbus TCP over Ethernet communication for easy networking

  • Optional pressure transmitter for accurate calculation of ppmV & g/kg

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Michell S8000
 

  • ±0.1 °Cdp (±0.18 °Fdp) accuracy

  • Fundamental, accurate and low-drift measurement

  • Simple configuration and operation via touchscreen interface

  • Precision measurements to –60 °C (–76°F) dew point

  • FAST – guaranteed frost formation below 0 °C (+32 °F)

  • Measure at pressures up to 2 MPa (20 barg)

  • USB and Ethernet connectivity

  • Datalogging to SD card or via digital comms

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S8000 Remote
 

  • Fundamental, accurate and low-drift measurement

  • Remote sensor

  • Open design allows remote sensor to be mounted into a sample flow or simply placed in an environment to be monitored

  • -40 to +120°C dew-point range with ±0.1°C accuracy

  • Data logging via USB, Ethernet or SD card

  • 'FAST' guarantees frost formation below 0°C

  • Sensor operates in pressures up to 20 barg

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S8000 RS
 

  • Accuracy of ±0.1 °C (±0.18 °F)

  • Precision measurement to -90 °C (-130 °F) frost point (95.4 ppbV) with no need for additional cooling

  • ±0.05 °Cdp (±0.09 °Fdp) stability at -90 °Cfp (-130 °Ffp)

  • ±0.05 °Cdp (±0.09 °Fdp) reproducibility at -90 °Cfp for S8000 RS -90;
    ±0.025 °Cdp (±0.045 °Fdp) reproducibility at -80 °Cfp for S8000 RS -80

  • Simple configuration and operation via touchscreen interface

  • Sensor optimized for fast response to low moisture levels

  • Microscope for visual inspection of condensate on mirror

  • Compact 19" x 4U package for flexibility of installation

  • Ethernet or USB connections

  • SD card datalogging

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S8000-100
 

  • Accuracy of ±0.1 °C (±0.18 °F)

  • Precision measurement to -100 °C (-148 °F) frost point (13.8 ppbV) with no need for additional cooling

  • Reproducibility of ±0.15 °C (±0.27 °Ffp) at -100 °C (-148 °Ffp) frost point

  • Simple configuration and operation via touch screen interface

  • Sensor optimized for fast response to low moisture levels

  • External 4-wire Pt100 connections

  • Microscope for visual inspection of condensate on mirror

  • Compact 19” x 4U package for flexibility of installation

  • Ethernet or USB connections

  • SD card data logging

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