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  • SGE- HD4 Series SF6 gas density digital detecting system
  • SGE- HD4 Series SF6 gas density digital detecting system

SGE- HD4 Series SF6 gas density digital detecting system


Used to control and monitor the density of SF6 gas in a sealed container. Used in SF6 high voltage circuit breakers, medium voltage switches, gas insulated equipment (GIS), high voltage cables, transformers and transformers, and suitable for strong vibration and outdoor harsh external conditions, can display the SF64 bulk density of SF6 electrical equipment ,and With communication interface, the SF6 body temperature, pressure, density, and micro-water and dew point data in the SF6 electrical equipment can be transmitted to the background by wired or wireless connection. The data can be pushed to the designated user through the self-developed cloud background. The mobile terminal can realize the operation of the SF6 electrical equipment,and the user does not need to go to the site.

  • Product Description

Main Feature:
1. Highlight digital tube display, convenient and clear on-site reading
2. The installation is fixed by panel,small structure , convenient installation i
Compact sealing, unique positive pressure helium detection, leakage rate is 1x10-8mbar./s
4. Electrical part of low power design, and passed EMC test
5. Using high-precision sensor, it can transmit temperature, pressure, density, micro water (optional),  and high accuracy
6. ABS shell with metal shielding layer, protection level IP55, beautiful appearance
7. 24v power supply, with 485 communication interface, optional wireless

Technical Parameters:

Leakage rate

≤1x10-8mbar./s (helium gas test)


20m/s2 Impact resistance : 500m/s2

Measuring range

Density: -0.1 ~ 0.9MPa
Dew point: -80°C~+20°C


Density level 1 (at20 ° C)

When the ambient temperature is between 40 ° C and +60 ° C, the accuracy level is 2.5; the dew point is ± 3 ° C.

Working environment

Temperature  -40 ° C ~ + 60 ° C, Relative temperature ≤ 95% RH

Installation method

Panel fixed, Punch 43mmx90mm


Level IP55


Insulation resistance: > 100MΩ (500V DC)
Insulation with stand voltage: 2000V, 50/60 Hz 1 min

Remote transmission of some major index and specifications

Working voltage


Power consumption

< 2W

Communication method


Communication protocol


Transmission speed

≥ 9600bps

Anti-electromagnetic interference

IEC61000-4-2: Level 4 (15KV)
IEC61000-4-3: Level 3 (10V/m)
IEC61000-4-4: Level 4 (4KV)
IECG1000-4-5: Level 3 (±2KV)
IEC61000-4-6: Level 3 (10V)
IECG1000-4-8: Level 4 (100A/m)


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