Model 473

High Performance Dew Point Chilled Mirror

Cost-Effective Humidity and Temperature Reference Analyzer

Our MBW CALIBRATION™ MODEL 473™ Dew Point Chilled Mirror Analyzer is our most cost-effective dew point instrument and performs like our high-end chilled mirror hygrometers. It features cable mounted dew point measuring heads that allow the user to measure directly within the application environment and includes a temperature probe as standard. 

The MODEL 473 dew point chilled mirror hygrometer is a high-performance instrument that offers several benefits for measuring dew point temperature and other humidity-related parameters. Some of the key benefits include:

  1. High accuracy: Uses the chilled mirror technique to measure dew point temperature, which is considered to be the most accurate method for measuring humidity. The instrument provides high accuracy and repeatability, with a measurement uncertainty of ±0.05°C.

  2. Wide measurement range: Can measure dew point temperatures from -100°C to +120°C, making it suitable for a wide range of applications. It can also measure frost point temperatures down to -110°C.

  3. Fast response time: Provides fast response times, with a typical response time of 5 minutes for a 90% step change in humidity. This allows for real-time monitoring and control of humidity levels in various applications.

  4. User-friendly interface: Features a user-friendly interface with a large, easy-to-read display and intuitive menus. The instrument can be operated with just a few buttons, and it provides on-screen prompts to guide the user through the measurement process.

  5. Low maintenance: Designed for easy maintenance, with a simple mirror cleaning process that can be done quickly and easily. The instrument also features a self-diagnostic function that alerts the user to any issues that may require attention.

  6. Robust design: Built to withstand harsh environments and can be used in a wide range of applications. It features a rugged, portable design with a protective carrying case, making it easy to transport between locations.

  7. Traceability: Is traceable to national standards, providing assurance of the accuracy and reliability of the measurements. The instrument also features a built-in data logging function, allowing for easy record-keeping and documentation of the measurements.

  8. Versatility: Is a versatile instrument that can measure various humidity-related parameters, including dew point, frost point, and absolute humidity. It can also be configured for different measurement units, such as Celsius, Fahrenheit, and parts per million by volume.

  9. Connectivity: Can be connected to a computer or network via a USB or Ethernet port, allowing for remote monitoring and control of the instrument. The instrument also supports various communication protocols, such as Modbus and SCPI, for easy integration with other systems.

Our MODEL 473 chilled mirror analyzer is used in a wide range of industries where precise measurement of dew point temperature and other humidity-related parameters is critical. Some of the industries include:

  1. Power generation: The Model 473 is used in power generation facilities to monitor and control humidity levels in various processes, such as combustion control and turbine inlet air conditioning. The instrument is used to optimize efficiency and reduce maintenance costs.

  2. Semiconductor manufacturing: Commonly used in semiconductor manufacturing processes, where precise control of humidity levels is critical for ensuring the quality and reliability of the final product. The instrument is used to monitor and control humidity levels in cleanroom environments, as well as in the manufacturing process itself.

  3. Pharmaceutical manufacturing: Used in pharmaceutical manufacturing processes, where accurate humidity control is necessary for ensuring product quality and safety. The instrument is used to monitor and control humidity levels in production areas, as well as in storage and transportation environments.

  4. Petrochemical industry: Used in the petrochemical industry for monitoring and controlling humidity levels in various processes, such as natural gas production, refining, and storage. The instrument is used to prevent corrosion and ensure the safe and efficient operation of equipment.

  5. Environmental monitoring: Used in environmental monitoring applications, such as weather stations and atmospheric research. The instrument is used to measure dew point and other humidity-related parameters in the atmosphere, which is important for understanding weather patterns and climate change.

  6. Calibration laboratories: Used in calibration laboratories for calibrating other humidity measurement instruments. The instrument’s high accuracy and traceability to national standards make it a reliable reference instrument for calibration purposes.

  7. HVAC and building automation: Used in HVAC and building automation applications to monitor and control humidity levels in indoor environments. The instrument is used to optimize energy efficiency, reduce operating costs, and improve occupant comfort and health.


RH Generator Transfer Standard

  • Enables lower calibration uncertainty
  • Minimizes drift, hysteresis and repeatability uncertainty
  • Approximately 50% reduction in uncertainty

Compared with RH probe

  • Continuous verification (e.g. in laboratory conditions)
  • Verification of RH control probe calibration
  • Compatible with all types of RH generator

Climatic Chamber Validation

  • Validation to IEC60068
  • Weather station calibration
  • RH generator transfer standard
  • Engine test cells

Meteorology – The Science of Weather

  • RH probe manufacturers and distributors
  • Calibration transfer standard
  • Meteorological Institutes
  • Weather station manufacturers and distributors

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    MODEL 473-SH2™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Measurements in Climatic Chambers or Humidity Generators
    Process Insights MBW Model 473-SH2-2020

    MODEL 473-RP2™

    MBW CALIBRATION™ Dew Point Chilled Mirror for Direct Insertion into Test Conditions with Moving Air
    Process Insights MBW Model 473-RP2-2020

    MODEL 473-SHX ™

    MBW CALIBRATION™ Dew Point Chilled Mirror for High Temperature Applications up to 125°C
    Process Insights MBW Model 473-SHX-2020

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