Product Details
Cold Mirror Method, High Precision, Suitable For Dew Point Testing
Of N2, H2, Etc KST-V
- Working Principle
Under a certain pressure, when the temperature is slightly lower
than the dew point (the saturation temperature of water vapor in
the gas), the water vapor in the gas condenses into dew. This
causes the light irradiated on the mirror surface to generate
diffuse reflection. The photosensitive device produces a change in
the electrical signal. The detection circuit sends the change in
the electrical signal and the temperature data to the control
system for analysis. Through an intelligent algorithm, the dew
point temperature value of the measured gas is calculated and
displayed (* The dew point below 0°C is called the frost point).
The schematic diagram of the dew point meter is shown in Figure 1:
Figure 1 Schematic Diagram of the Dew Point Meter
2. Main Technical Specifications
Measurement Method | Fully automatic continuous measurement |
Gas to be Measured | SF6 |
Gas Flow Rate | 400~800±50ml/min |
Flow Display | Digital flow meter |
Temperature Resolution | 0.1℃ |
Measurement Range | 20℃ ~ -62℃ |
Measurement Error | Better than ±0.3℃ |
Display Units | ℃, ppm |
Measured Gas Pressure | ≤1MPa |
Operating Environment Temperature | -20℃ ~ 50℃ |
Operating Environment Humidity | ≤85%RH |
External Power Supply | AC220V±10%, 50Hz |
Built-in Power Supply | 24V lithium battery |
Power | ≤70W |
Normal Continuous Operation Time | >8h |
Measurement Principle | Cold mirror measurement principle |
Cooling Source | SL micro cooler |
Sampling Interface | Self-sealing quick connector |
Dimensions | Length 340mm × Width 230mm × Height 200mm |
Weight | ≤9.5 kg |
Company Profile
Manufacturer of SF6 testing instruments and equipment with the most
complete range of products from China, with 13 years of
professional experience
Company Profile
Leading SF6 testing equipment manufacturer (with over 1000
customers all over the world)
Passed ISO9001 new version certification
Double soft certification enterprise
National level high-tech enterprise, specialized and innovative
enterprise, national level technology-based small and medium-sized
enterprise
National standard: "GB/T11023-2018 High voltage switchgear - SF6
gas sealing test method" standard formulation
Industry Standard of the Energy Administration of the People's
Republic of China: "DL/T1366-2023 Sulfur Hexafluoride Gas for Power
Equipment" Revision Unit
Industry Standard of the Energy Administration of the People's
Republic of China: DL/T2756-2024 Guidelines for Detection and
Recovery of Sulfur Hexafluoride and Its Mixtures for Electrical
Equipment Participating Units
Industry Standard of the Energy Administration of the People's
Republic of China: DL/T1353-2024 Technical Specification Standard
for Sulfur Hexafluoride Treatment System Participating Units
Group Standard: Technical Specification and Standard for
Perfluoroisobutyronitrile Gas Replenishment Device Participating
Units
Recommended manufacturer of SF6 mixed gas GIS tools for State Grid
Corporation of China (2022) No. 290.
Member of China Electrical Equipment Industry Association and China
Fluorosilicon Organic Materials Industry Association.
SF6 leak detector, dew point meter, comprehensive testing
instrument, recovery vacuum separation and purification device,
mixed gas filling device; C4F7N gas instruments and equipment.