Portable Dew Point Meter

Product Introduction

The portable dew point meter is a gas moisture content detection instrument based on capacitive polymer sensing technology, used to quickly and accurately measure the dew point temperature of a gas (unit: ℃ or ℉). The instrument complies with international general humidity measurement standards and features anti-contamination, fast response and high stability. It is suitable for instant detection needs in industrial sites, laboratories and outdoor environments.

When the temperature decreases, the temperature at which water vapor in the air becomes dew is called the dew point. When this temperature is below zero degrees Celsius, it is also called the frost point, at which the water condenses into frost. Measuring the dew point temperature is crucial for many industries and applications. It helps determine the water vapor content in the air, as well as predict the temperature at which water vapor will condense into water under specific conditions.

Application Scope

It is widely used in gas moisture detection in the following fields:
1. Energy industry: micro-water monitoring of natural gas pipelines, compressed air systems, gas storage tanks and transformers;
2. Power systems: moisture analysis of insulating gas in GIS equipment, SF₆ circuit breakers and power transformers;
3. Manufacturing: quality control of welding shielding gas, laser cutting gas and industrial drying gas;
4. Scientific research and laboratories: material dryness testing, environmental chamber humidity calibration and chemical reaction process monitoring;
5. Aerospace: dew point detection of airborne gas systems and inert gas in fuel storage tanks.

Executive Standards

• JJF 1272-2011 Calibration Specification for Resistance-Capacitance Dew Point Hygrometers
• GB/T 11605-2005 Methods of Humidity Measurement - 6 Resistance and Capacitance Method
• DL/T 506-2018 Method for Measuring the Humidity of Insulating Gas in Sulfur Hexafluoride Electrical Equipment
• GB/T 27896-2018 Determination of Water Content in Natural Gas - Electronic Analysis Method

Product Features

• Adopts a high-precision sensor originally imported from a world-renowned brand, with fast response and providing long-term reliable high-precision measurement.
• Adopts a 7-inch touch color LCD display with a graphical operation interface and one-key switching between Chinese and English interfaces.
• Supports simultaneous measurement and display of 9 parameters on the same interface: dew point (℃), temperature, pressure, normal-pressure dew point, volume ratio (ppmv), mass ratio (ppmw), mixing ratio (g/Kg), absolute humidity (mg/m³) and relative humidity (%).
• Has an automatic sensor calibration function; the sensor probe can automatically calibrate the zero point, automatically eliminating systematic errors introduced by zero point and drift, ensuring the accuracy of each measurement while eliminating the trouble of annual calibration; the calibration cycle is as long as once every two years.
• Supports real-time curve display of dew point changes.
• Supports dew point and temperature calibration and pressure compensation functions.
• Supports the timed automatic data saving function, with a user-defined automatic saving interval.
• Automatic anti-condensation design (suitable for high-humidity environments); resistant to particulate contamination, oil vapor and most chemicals, and insensitive to flow rate changes.
• Equipped with a stainless steel filter, durable and long-lasting.
• Portable design with a self-resetting folding handle design and adjustable support feet.
• Built-in large-capacity lithium battery; one charge guarantees continuous operation of the instrument for more than 20 hours.
• Can store more than 100,000 historical records, with USB data export to generate an Excel report.
• With WiFi networking function, supporting remote upgrade and maintenance.

Technical Specifications