HVHIPOT SF6 Gas Purity and Dew Point Analyzer

GDSF-311WP SF₆ Gas Analyzer can test humidity, and purity of SF₆ gas in one device. One on-site measurement can finish two items detection, which greatly save gas in the equipment and improve working efficiency.

The sensor for humidity test is from Vaisala, while for purity is Smart-Gas NDIR principle sensor.

• Color LCD screen display.


• High polymer material design for the whole set, ensures no water hanging on the wall and guarantees the test speed.


• The oil-free stainless-steel body regulating valve is used to ensure the accuracy of the measured value.


• Combined chassis configuration solution, users can easily combine related instruments and accessories. The overall package is carried, more flexible.


• Start-up test, no need to preheat and oscillate.


• Temperature conversion and pressure data correction. Automatic zero-point calibration.


• High-power lithium battery power realizes AC and DC dual power supply. No on-site AC power is required. Lithium battery power supply continues to work for more than 8 hours without the need of an external power supply.


• Anti-electromagnetic interference circuit design to ensure product reliability.


• Large-capacity memory, which can realize 1000 sets of data storage functions.


• The test data is stable and can provide both standard dew point values and converted dew point values at 20ºC.


• The best test flow area shows that the user can adjust the gas flow intuitively and quickly. Reduce test time


• The air inlet is designed with a miniature self-sealing joint, and the air path to be tested will not leak when the air path is disconnected.

SF₆ Humidity

Measurement method: Resistive and Capacitive measurement principle

Measurement range: dew point -80℃--+20℃(support ppmv)

Accuracy: ±1℃ (when the dew point temperature is below 0 ℃, the sensor output is the frost point)

Response time: 63% [90%]

                 +20→-20℃ Td 5s[45s]

                 -20→-60℃ Td 10s[240s]

Resolution: 0.01℃

Repeatability: ± 0.5 ℃

Display unit: ℃, ppm, ℃_P20(converted value at 20℃)

Gas flow: SF6 and other gas is adjusted at 500-900ml/min, H₂ is adjusted at 100-400mL/min.

Flow display: 0-1000mL digital flow meter

Sample gas pressure: ≤1MPa

SF₆ Purity

Measurement method: TCD technology

Measuring range:   0 ~ 100% SF_6.

Accuracy: ±1%FS

Repeatability: ±0.5%.

Gas flow: 350-450mL/min

Probe protection: Stainless steel sintered filter.

Power supply: 220VAC±10%, 50Hz, AC/DC use, over-charge protection, continuous working is no lower than 8hours.

Use environment temperature: -20--+60℃

Environment humidity: 90%RH

Measurement value influence: No effect of pressure and flow

Dimension: 395*295*155mm

Weight: about 3.9kg.

Panel Instruction

A. Panel Instruction of Main Unit