SF6 Analyzer Gas Purity | Detailed introduction of technical principles

The core principle of an SF6 purity tester is to calculate the volume percentage concentration of SF6 by detecting the physical properties of a gas mixture (mainly thermal conductivity or sound velocity) and comparing it with pure SF6 gas.

It is primarily based on two technologies:

1. Thermal Conductivity Detection Method: Different gases have different thermal conductivities. The instrument has a built-in thermal conductivity sensor. When the gas being tested flows through it, it changes the sensor's heat dissipation rate, causing a change in the electrical signal. By comparing the difference in thermal conductivity between the tested gas and a pure SF6 reference gas, the purity of SF6 in the gas can be calculated. This method is effective for detecting the mixing of SF6 with air (nitrogen, oxygen).

2. Sound Velocity Detection Method: The speed of sound propagation in a gas depends on the gas's molecular weight and temperature. The molecular weight of SF6 is much larger than that of the main components of air (N₂, O₂). The instrument obtains the sound velocity by accurately measuring the propagation time of sound waves in a fixed gas chamber and compares it with a known sound velocity-purity relationship curve for SF6-air mixtures, thereby directly and quickly calculating and displaying the purity value. This method has strong anti-interference capabilities and is the mainstream method for on-site testing. SF6 Gas Purity Analyzer, SF6 Gas Quality and Purity Analyzer, Automatic Portable SF6 Gas Purity Tester
Measurement Range: 90% - 99.99%

1. Self-calibration: The sensor probe can automatically calibrate the zero point, automatically eliminating systematic errors introduced by zero point drift, ensuring the accuracy of each measurement.

2. Simple operation: Extra-large touch LCD screen, WYSIWYG simple operation.

3. Fast and gas-saving: After powering on and entering measurement mode, each purity measurement takes approximately 2 minutes.

4. Self-locking connector: Uses original imported self-locking connectors, safe and reliable, leak-free.

5. Data storage: Large capacity design, can store up to 1000 sets of test data.

6. Clear display: 4.3-inch extra-large touch LCD screen directly displays current purity, gas flow rate, ambient temperature, time, and date.

7. Built-in USB interface: Allows for uploading internal instrument data to a computer via USB flash drive for convenient data analysis and processing.
8. External micro printer: Allows for printing test data or historical data at any time.

1. Purity: Measurement range 90% - 99.99%, Measurement accuracy ±0.3%, Response time < 2 minutes

2. Inlet pressure: 0-100 kPa

3. Flow rate: 0.5-0.6 L/min

4. Ambient temperature: -20℃ to +80℃

5. Ambient humidity: 0-90% RH

6. Power supply: AC100-240V 50Hz 60Hz

7. Built-in high-capacity lithium-ion rechargeable battery

8. Battery performance: Charging time: 2 hours; Usage time: over 10 hours.

9. Operating Temperature: -20℃ to +60℃

10. Dimensions: 250×100×300mm

11. Weight: 2 kg

SF6 Purity Tester, SF6 Purity Tester Gas Purity Tester, Sulfur Hexafluoride Purity Tester, SF6 Purity Analyzer

MS-406SF6 Gas Purity Analyzer, SF6 Gas Mass and Purity Analyzer, Automatic Portable SF6 Gas Purity Tester