Model 973-Sf6 

Portable Chilled Mirror Hygrometer

High-Performance Hygrometer Measures Both Spot and Continuous Dew/Frost Point in Air and Other Gases – Laboratory Precision – Field Ready 

The MBW CALIBRATION™ MODEL 973-SF6™ Dew Point Chilled Mirror Analyzer 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.

Find out why we are different.

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.

Features and Benefits

    • SF6 gas humidity, purity and SO2 concentration
    • Fundamental drift free humidity measurement
    • Integral frost/dew point measuring head
    • Internal sample pump
    • Optimal Response Injection System for fast spot checks
    • Pressures up to 20 bar
    • Intuitive, easy to use LCD touch screen user interface
    • High accuracy temperature measurement
    • Transport case as standard
    • Frost/dew point range: -76 to +20 ̊C
    • Temperature: -50 to +100 ̊C

        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

          MBW TECHNOLOGY

          SWISS ENGINEERED, INNOVATIVE MBW CALIBRATION TECHNOLOGY

          MBW has produced dew point mirror hygrometers since 1963. Over 55 years of development, manufacturing and application experience are integrated within today’s product range. In this section of our website we detail some of the fundamental technology that means our instruments provide the best measurement capability and longevity currently available. Since we do not want to give away all our secrets, we do not go in to too much detail here, but if you would like to know more, please contact us.

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          Services

          We offer a complete range of services and technical support to support all the dew point chilled mirror products we manufacture and supply. 

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          OUR CHILLED MIRROR SOLUTIONS

          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

          MODEL 373™

          MBW CALIBRATION™ Humidity & Temperature Reference Dew Point Chilled Mirror up to 125°C
          Process Insights_mbw 373 chilled mirror hygrometer

          MODEL 473™

          MBW CALIBRATION™ Humidity & Temperature Reference Dew Point Chilled Mirror up to 125°C
          Process Insights MBW Model 473-RP2-2020

          MODEL 573™

          MBW CALIBRATION™ Dew Point Chilled Mirror for Fixed Industrial Installations & Measures Above Ambient Temperature
          Process Insights_MBW Model 573_chilled mirror hygrometer

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          MBW CALIBRATION™ Multi-Channel Stable Platinum Resistance Thermometer (PRT)
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          TempControl™ Software

          Mirror Temperature Software
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          Mirror Software
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