Skip to main content

Model 973E 

Cost-Effective Chilled Mirror Hygrometer

Make Drift-Free Humidity Measurements Easily

Our MBW CALIBRATION™ Model 973E™ Dew Point Chilled Mirror Analyzer is a “value engineered version” of the 973 series. It does not compromise on quality and performance, so still includes pressure measurement as a standard feature, can operate up to 10 bar and features ORIS to maintain fast response in spot check applications.

The MODEL 973E Dew Point Chilled Mirror Analyzer is a portable, handheld instrument designed for the measurement of trace moisture in gases. It uses the chilled mirror principle, which involves cooling a surface until dew or frost forms, and then measuring the temperature at which this occurs to determine the moisture content of the gas.


Some key features and benefits of the MODEL 973E Dew Point Chilled Mirror Analyzer include:

  • Portable design: Is lightweight and portable, making it easy to use in the field or on-site.
  • Fast response time: Has a fast response time of less than 5 minutes, allowing for quick and accurate measurements.
  • High accuracy: The chilled mirror principle provides highly accurate measurements, with a measurement range of -100°C to +30°C dew point.
  • User-friendly interface: The analyzer has a user-friendly interface with a large, easy-to-read LCD display, making it simple to operate and read measurements.
  • Low maintenance: The chilled mirror sensor has no consumable parts and requires minimal maintenance, reducing downtime and costs.
  • Wide range of applications: Can be used to measure trace moisture levels in a wide range of gases, including nitrogen, oxygen, hydrogen, and compressed air.


Some of the industries and applications that use the MODEL 973E Dew Point Chilled Mirror Analyzer include:

  • Power generation: The analyzer is used to monitor trace moisture levels in gases used in power generation, such as hydrogen and nitrogen.
  • Semiconductor manufacturing: The analyzer is used to monitor trace moisture levels in high purity gases used in semiconductor manufacturing, such as nitrogen and argon.
  • Petrochemical production: The analyzer is used to monitor trace moisture levels in gases used in petrochemical production, such as ethylene and propylene.
  • Food and beverage production: The analyzer is used to monitor trace moisture levels in compressed air used in food and beverage production, to ensure product safety and quality.

Features and Benefits

    • Fundamental drift-free humidity measurement
    • Integral frost/dew point measuring head
    • Intuitive, easy to use LCD touch screen user interface


      • Min./Max. frost/dew point range: -60 to +20 ̊C
      • Calibrated frost/dew point range: -50 to +20 ̊C
      • ORIS for fast response for low humidity
      • 10 bar pressure measurement


      • On-site calibration of dew point sensors
      • Standards laboratories
      • Validation of production and storage conditions
      • Dryer performance tests

        To Top

        Solutions Flyers

        • WHO WE ARE

          At Process Insights, we are a global team of enthusiastic individuals driven by the vision of enhancing process control to ensure safety, effectiveness, and cost-efficiency. Our collective passion lies in developing cutting-edge analytical instrumentation and process control solutions.

          Our extensive portfolio proudly encompasses a wide array of well-known brands, all driven by a common purpose: delivering innovative technologies to tackle complex processing applications for regulatory compliance. We are committed to providing cutting-edge solutions that empower our customers to achieve operational excellence while meeting stringent environmental standards. With our range of advanced products, you can trust in our dedication to addressing your most challenging analytical needs and regulatory requirements.

          Through innovative and distinctive technologies and brands, we bring valuable analysis and measurement solutions to our customers across various critical industries and applications. Our products play a vital role in empowering our customers to achieve operational excellence, elevating their processes, applications, product quality and operations to new heights.

          Explore the Process Insights suite of turnkey analytical solutions and instrumentation serving industrialhigh purity, and lab and research applications.  Learn more About Us.

        • MISSION & VALUES

          As a renowned global innovator, Process Insights carries a rich heritage of conquering the most intricate obstacles in process optimization, quality control, and safety. Our “total solutions” approach harmonizes cutting-edge technologies, unparalleled expertise, and an unyielding inquisitiveness about the world, all in pursuit of crafting sustainable solutions for the critical customers we serve. 

          We are committed to ensuring our business practices are sustainable every day.  As responsible stewards, we continue to work hard to minimize any negative impact our work may have in the countries, and communities in which we operate. Our products and solutions are at work all over the world.  We focus on innovative and differentiated solutions and technologies that add high value to our end-user’s applications and processes.  We are committed to operational excellence and innovation that help our customers create the products and services that make our lives better.  For our customers, we are committed to keeping their process control safe, and efficient.  

        • COMMITMENT

          Process Insights is dedicated to providing its customers with high-performance analytical products that consistently exceed expectations. With a relentless pursuit of innovation and cutting-edge technology, we strive to stay at the forefront of the industry. Our commitment to excellence is reflected in every aspect of our products, from their precision and reliability to their user-friendly interfaces.

          We understand the importance of accurate and dependable analytical solutions in optimizing operations, ensuring quality control, and maximizing productivity. Thus, we invest in rigorous testing and continuous improvement to deliver products that not only meet but also surpass industry standards. At Process Insights, our customers can trust us to deliver superior performance and unwavering support, making us the go-to partner for their analytical needs.

          Explore the Process Insights powerful suite of turnkey analytical solutions and instrumentation serving industrialhigh purity, and lab and research applications.


          Our foundation is built on unwavering integrity, driving us to reduce our environmental impact, conserve natural resources, and manage energy, waste, and water usage responsibly. This commitment echoes throughout our value chain, fostering collaboration and creating superior value for all stakeholders. Sustainability is not just a goal; it is an integral part of our daily business practices. As responsible stewards, we tirelessly work to minimize any negative impact on the countries and communities where we operate.

          We actively pursue sustainability, foster social responsibility, and maintain the highest ethical standards. Through innovation and collaboration, we strive to positively impact the world, both today and for future generations.

          We are dedicated to minimizing our environmental footprint, promoting social responsibility, and creating lasting positive impacts in the communities we serve. Together, we’re building a more sustainable and equitable future for all.


          Cavity Ring-Down Spectroscopy (CRDS) Gas Analyzers | TIGER OPTICS™  View Products

          Dew Point Chilled Mirror Analyzers | MBW CALIBRATION™ View Products

          Excimer UV Total Sulfur – Nitrogen Process & Lab Analyzers | ATOM INSTRUMENT™ View Products

          FTIR FT-NIR Lab & Process Spectrometers | ANALECT® View Products

          Dew Point Moisture Analyzers & Transmitters | COSA XENTAUR™ View Products

          Quadrupole Industrial & Lab Mass Spectrometers | EXTREL™ View Products

          Fixed Magnet Industrial & Lab Mass Spectrometers | MGA™ View Products

          NIR UV-VIS Lab & Process Spectrometers | GUIDED WAVE™ View Products

          TOC COD BOD High Temperature Method Water Quality Analyzers | LAR™ View Products

          BTU Wobbe CARI Injection Style & Direct Calorimeters | COSA XENTAUR™ View Products

          Relative Humidity Hygrometers | HYGROCONTROL™ View Products

          Trace and Percent Oxygen Analyzers | ALPHA OMEGA INSTRUMENTS™ View Products


          Process Insights plays a pivotal role in optimizing processesensuring quality, and delivering safety solutions. Our turnkey solutions and instrumentation offer exceptional accuracy, surpassing the competition and ensuring the safety of your plant, processes, environment, and personnel. The speed of our continuous, real-time analytical solutions simplifies time-sensitive experiments and simulations.

          By providing real-time data on gas composition, our gas analysis solutions enhance process control, leading to increased efficiency, reduced waste, and improved product quality. Additionally, our solutions contribute to enhanced safety by detecting potentially hazardous gases, thereby preventing accidents, and protecting both personnel and equipment. We also facilitate regulatory compliance by helping companies meet emissions monitoring and control requirements, ensuring adherence to environmental regulations and avoiding penalties.

          Our product portfolio includes:

          Learn more about our solutions.

        Other 973 Model Options

        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 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

        T12 Thermometer

        MBW CALIBRATION™ Multi-Channel Stable Platinum Resistance Thermometer (PRT)
        Process Insights_mbw temperatur T12_instrument

        TempControl™ Software

        Mirror Temperature Software
        Process Insights_mbw temperatur T12_instrument

        GECKO R2™ Metrology Software

        Mirror Software
        Process Insights_mbw temperatur T12_instrument
        To Top

        Questions? We’re here to help.