473-SH2 Model Chilled Mirror Dew Point Hygrometer

Designed For Corrosive Environments

Cost-Effective Humidity & Temperature Reference Hygrometer

The MBW CALIBRATION™ MODEL 473-SH2™ Dew Point Chilled Mirror Analyzer with a cable mounted measuring head with an integrated sample flow control fan delivers fast, high precision temperature measurement. It is ideal for use in climatic chambers or humidity generators where it functions as a calibration transfer standard for dew/frost point, relative humidity, and temperature. The 473-SH2 includes precise measurement of temperature with a 2 x 100 mm platinum resistance thermometer (PRT) that can be connected directly to the SH2 measuring head, or to the MODEL 473 display. Our MODEL 473-SH2 Dew Point Chilled Mirror Analyzer is a specialized version of the MODEL 473 that is specifically designed for measuring the dew point of corrosive gases, such as hydrogen sulfide (H₂S).

FEATURES

Cable mounted dew point mirror
Sample gas flow fan
Integrated temperature probe
User replaceable optical components
Easy mirror access for cleaning
Optional barometric pressure measurement

BENEFITS

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.
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.
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.
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.
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.
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.
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.
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.
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.

Data Sheet

Data Sheet FR

Data Sheet DE

Manual

Climatic Chamber Validation

Calibration & Validation Application Note

Download Product Guide

SALES | TRAINING INQUIRIES

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CHINA: info.cn@process-insights.com

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INDUSTRIES

Oil and gas: Commonly used in the oil and gas industry for monitoring and controlling the moisture content of natural gas and other hydrocarbon gases. Hydrogen sulfide is a common impurity in natural gas, and the MODEL 473-SH2 is ideal for accurately measuring the dew point of these gases.
Chemical manufacturing: Used in the chemical manufacturing industry for monitoring and controlling the moisture content of corrosive gases, such as chlorine and ammonia. These gases can be highly reactive and corrosive, and accurate measurement of their dew point is critical for safe and efficient manufacturing processes.
Semiconductor manufacturing: Used in semiconductor manufacturing processes where hydrogen sulfide and other corrosive gases are used. The instrument is used to monitor and control humidity levels in cleanroom environments, as well as in the manufacturing process itself.
Environmental monitoring: Used in environmental monitoring applications, such as air quality monitoring and emissions testing. The instrument is used to measure the dew point of gases containing hydrogen sulfide and other corrosive gases, which is important for understanding the impact of these gases on the environment.
Calibration laboratories: Used in calibration laboratories for calibrating other humidity measurement instruments that are used to measure corrosive gases. The instrument’s high accuracy and traceability to national standards make it a reliable reference instrument for calibration purposes.

APPLICATIONS

Climatic chamber validation
RH generator transfer standard
Calibration reference
Engine Test Cells
Process validation

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Solutions Flyers

Measuring Head SH2 Part No. 105001

The SH2 is a flow-through dew point measuring head with a two-stage Peltier element for mirror temperature control. It includes a variable speed fan that maintains a consistent airflow across the mirror. Alternatively, with the fan removed, the SH2 head can also connect to applications using tubing and standard 6 mm or ¼” fittings. It is also supplied with a calibrated temperature probe with 0.5 m and 3 m cables for connection to either the measuring head or the 473 back panel.

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