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Model 973

Dew Point Chilled Mirror Analyzer

Portable Chilled Mirror Hygrometer

The 973 Dew Point Mirror is a portable instrument equipped with an integral measuring head for both spot and continuous measurement of dew/frost point in air and other gases. Based on the chilled mirror principle, the 973 provides fundamental, drift free and precise humidity measurement.  For many applications it is a transfer standard.

The 973 also measures pressure and temperature with high accuracy and includes features that enable alternative humidity parameters such RH, ppmv, vapor pressure and absolute humidity. Unique features enable fast response in spot check applications and users can self-check instrument calibration stability using the integrated Ice-Test function. All versions of the 973 are supplied a tough transport case that protects this valuable instrument when moving around site or when shipped for calibration.

The MODEL 973-SF6 Dew Point Chilled Mirror Analyzer is primarily used in the electrical power industry for the measurement of moisture content in SF6 gas insulated equipment such as gas-insulated switchgear (GIS) and circuit breakers. This is because moisture can cause insulation failure and equipment damage in these applications.

It can  is also used in other industries that use SF6 gas such as the semiconductor industry, which uses SF6 gas as a dielectric gas for plasma etching, and the magnesium industry, which uses SF6 gas as a cover gas in the casting process.

APPLICATIONS

  • On-site calibration of dew point sensors
  • Breathing gas quality
  • Battery manufacturing
  • Compressed air systems
  • Standards laboratories
  • Validation of production and storage conditions
  • Dryer performance tests

    Process Insights_MBW Model 573_chilled mirror hygrometer
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    OUR CHILLED MIRROR SOLUTIONS

    MODEL 973-SF6™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Humidity Measurement in SF6 & SO2 in Gas Insulated Switchgears (GIS)

    For SF6 & SO2 

    Process Insights_MBW 973-SF6_instrument

    MODEL 973S™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Spot & Continuous Measurement of Dew/Frost Point In Air & Other Gases

    Original full specification 

    Process Insights_MBW Model 973S_chilled mirror hygrometer

    MODEL 973CA™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Spot & Continuous Measurement of Dew/Frost Point In Air & Other Gases

    Compressed air specification

    Process Insights_MBW Model 973S_chilled mirror hygrometer

    MODEL 973E™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Spot & Continuous Measurement of Dew/Frost Point In Air & Other Gases

    Most cost-effective solution

    Process Insights_MBW Model 973S_chilled mirror hygrometer

    MODEL 973L™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Spot & Continuous Measurement of Dew/Frost Point In Air & Other Gases

    For low range specifications

    Process Insights_MBW Model 973L_chilled mirror hygrometer
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