MBW Calibration 473 Dew Point Mirror

The MBW Calibration 473 dew point mirror is the lowest cost MBW dew point instrument, yet it has similar performance and the same user interface as high end instruments. It features cable mounted dew point measuring heads that allow the user to measure directly within the application environment, and include a temperature probe as standard. Using both measured variables, the 473 is able to calculate, display and output relative humidity. As an option, the 473 can be specified with a barometric pressure sensor. Three different measuring heads with 2 m connecting cables are available (lengths up to 10 m can be provided on some versions on request).

Full Colour Touch Screen – the MBW Calibration 473 dew point mirror features a full colour active matrix liquid crystal display with an integral touch panel. It has a high contrast ratio and a wide viewing angle for easy readability. Data is displayed in large easy to read fonts. Using the on screen buttons and menus, you can easily configure each line of the display for a variety of humidity, temperature and pressure parameters that may be viewed in either SI or non-SI units. A simple touch of a button toggles any parameter between numeric or graph format.

Digital I/O – the 473 is equipped with an RS-232 digital output for recording or remote readout of the measured and calculated values.

Verifiable Calibration – easily check the calibration at any time using the built-in Ice Test function, providing instant verification of system integrity.

  • Fundamental drift free humidity measurement
  • Cable mounted frost/dew point measuring head
  • Sample gas flow modules
  • Precise temperature measurement
  • Barometric pressure
  • Intuitive, easy to use LCD touch screen user interface
  • Frost/dew point range: -30 to +99 ̊C
  • Temperature: -50 to +100 ̊C
  • Temperature with T12: -200 to +250 ̊C
  • Transfer standard for relative humidity generators
  • Climatic chamber validation
  • Engine test cells
  • Calibration of test conditions
  • Standards laboratories
  • Validation of production and storage conditions
  • Dryer performance tests
373 Dew Point Mirror
373 Dew Point Mirror
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573 Dew Point Mirror
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973 Dew Point Mirror




About MBW Calibration – MBW was founded in 1962 as a manufacturer of precise instrumentation for textile, heat treatment and humidity measurement applications.  Based in Wettingen Switzerland, at its heart are the core Swiss principles of precision, quality and sustainability.

MBW’s international reputation has led to their products becoming established transfer standards at National Metrology Institutes (NMI) worldwide, with many instruments remaining in service for up to 30 years.  In partnership with US company RH Systems, the 373 dew point hygrometer was introduced in 1999 as the ultimate instrument for measuring humidity and today it remains the transfer standard of choice throughout the worlds NMIs, calibration laboratories and high end research organisations.

MBW’s SCS accredited 17025 calibration service meets the most stringent requirements of quality systems, accredited calibration and validation schemes.  Their 17025 calibration uncertainties are comparable with the best laboratories within the International Metrology community.