SF6 Gas Dew Point Meter | Detailed introduction of technical principles

The core principle of an SF6 dew point analyzer is to accurately measure, directly or indirectly, the temperature at which water vapor in the gas begins to condense into dew (or frost), i.e., the dew point temperature, and calculate the moisture content under standard conditions based on this.

There are two main implementation methods:

1. Condensation Mirror Method (Direct Measurement): The core is a precisely temperature-controlled mirror. Gas flows through the mirror, and the instrument automatically adjusts its cooling. When the mirror temperature drops to the instant when water vapor becomes saturated and condenses, a high-sensitivity optical sensor detects the change in the mirror's reflectivity. The mirror temperature at this moment is the dew point/frost point temperature. This method has high accuracy and is often used as a benchmark.

2. Sensor Method (Indirect Conversion): This method uses a capacitive or resistive humidity sensor to measure the relative humidity or water vapor partial pressure of the gas. The instrument simultaneously measures the current temperature and pressure of the gas, and automatically calculates and outputs the corresponding dew point temperature value using built-in SF6 gas characteristic parameters and complex formulas.

Finally, based on the measured dew point temperature and gas pressure, the instrument automatically calculates and displays the volume fraction (ppm₀) under standard reference conditions (e.g., 20°C, 101.3 kPa), thus accurately assessing the dryness of SF6 gas. SF6 gas dew point meter, gas trace moisture tester, SF6 gas dew point and trace moisture tester measurement range: -60℃ - +20℃ (at 20℃ atmospheric pressure)

SF6 dew point analyzer, SF₆ dew point analyzer is a portable precision dew point meter manufactured with advanced technology.

It can accurately measure the dew point temperature of a gas. The perfect combination of a high-quality dew point sensor and intelligent electronic control technology

makes it successfully applied to the accurate measurement of dew point under various environmental conditions.

Dew point measurement is based on the principle of a cold mirror. Through semiconductor cold stack cooling, water vapor in the measured gas condenses into water or frost on the mirror surface.

When the two-phase equilibrium of water in the gas is reached, the temperature of the mirror surface at this point is the dew point or frost point of the gas.

Compared to other types of dew point meters, the cold mirror dew point meter provides more accurate dew point temperature measurements, and also features good repeatability, stable and reliable results, and ease of operation.

The portable cold mirror SF₆ gas dew point meter is a standard instrument for humidity measurement in fields such as power, gas, meteorology, electronics, petroleum, chemical, and metrology, and is an ideal choice for establishing humidity standard devices.

1. Utilizing the cold mirror balancing principle eliminates measurement errors caused by hysteresis, resulting in high measurement accuracy.

2. Excellent repeatability, fast response, high sensitivity, and good stability.

3. A 5-inch full-color high-resolution LCD screen simultaneously displays instrument operating parameters such as dew point, mirror light intensity, and sample gas flow rate. It also allows for conversion between dew point value and moisture concentration.

4. Features a maximum cooling capacity testing function and a low-humidity rapid balancing function, ensuring fast and accurate dew point measurement.

5. Convenient gas path connection, simple operation, and portability, suitable for various applications.

6. Touchscreen human-machine interface with dynamic graphic curve display, making operation easy and intuitive.

7. Rich System Function Expansion: Additional functions can be customized upon request.

1. Dew Point Measurement Range: -60℃ - +20℃ (at 20℃ atmospheric pressure)

2. Dew Point Accuracy: ±0.1℃ - ±0.2℃

3. Dew Point Repeatability: ±0.05℃

4. Measurement Mode: Four Levels

5. Auxiliary Cooling: Heat Pipe

6. Dew Point Temperature Sensor: PRT-100

7. Display: 5-inch Full-Color High-Resolution LCD Screen

8. Gas Path Connection: ¼〃 Stainless Steel PTFE (Polytetrafluoroethylene)

9. Sample Gas Flow Rate: 0.2 L/min - 1 L/min

10. Operating Temperature: -10℃ - +40℃; Storage Temperature: -10℃ - +50℃

11. Ambient Temperature: 90%RH max (No Condensation)

12. Power Supply: 220Vac±10% 50-60 Hz Power consumption: <50W

SF6 Dew Point Analyzer, SF6 Dew Point Meter, SF6 Gas Dew Point Analyzer, Cold Mirror Type SF6 Gas Analyzer

MS-405BS SF6 Gas Dew Point Meter, Gas Trace Moisture Analyzer, SF6 Gas Dew Point and Trace Moisture Analyzer