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SF6 Electrical Equipment Gas Comprehensive Detector
 
Model: JH4000D-4
 
Six in one, test SO2+ SOF2, H2S, CO, HF; SF6 purity; SF6 moisture.
 
JH4000 series SF6 Electrical Equipment Gas Comprehensive Detector is a high precision, intelligent and portable comprehensive detector. It detects the main decomposition products, as well as SF6 purity and moisture content. It is reliable, accurate and stable. The user is able to make rapid and accurate judgment based on the content of main decomposition products, SF6 purity and moisture content. Inspected by authorities such as the National Institute of Metrology, the device, having excellent performance, complies with relevant international and national standards. It is a product recommended for use by the State Power Grid Company. This comprehensive detector is designed flexibly for the user’s choice. They can combine any two or three detection together. They can work simultaneously or separately, providing more complete measures for the inner fault diagnosis and it is an effective measure for preventive and corrective maintenance.
 
  Features
 
*   Multi Components detection, high precision, excellent stability
 
---  Detect decomposition products: SO2+ SOF2, H2S, CO, HF;
---  Detect SF6 purity;
---  Detect H2O content.
 
*   Rapid test, less gas consumption and environment friendly
 
---  Flowrate of gas detected: 200ml/min for decomposition products and purity detection;
500ml/min for water content detection.
---  Detection time: 2 mins for decomposition product detection and purity detection,
3~5 mins for moisture content detection.
 
*   Complete function, leading technology
 
---  Big LCD display with user friendly operating interface.
---  High sensitivity sensor plus optimized process of gas path ensure low level detection.
---  Built-in temperature compensation and automatic end point judgment.
---  Excessive high concentration protection technology.
---  Dual range SO2 sensors switch automatically to detect low and high concentration.
---  Built-in purge function with ambient air to reset value to zero quickly.
---  Built-in electronic flow meter displays gas flowrate while detecting.
---  Built-in micro printer, convenient for on-site data printing.
---  Gas inlet withstands the pressure of 1.0Mpa.
---  Main parameter self-checking.  
---  Automatic zero correction.
---  Display the moisture content in ppm and dew point in ℃.
---  Built-in diagnostic software analyses and judges the circuit breaker and other equipment according to the operation condition and test data of the equipment. 
---  Powerful diagnostic and data management software with features of data storage, transmission, query, edition, analysis, graph generation and printing functions.
 
Patent technology
 
The detector has been granted with a number of patents.
 
Specifications
 
Item
Components
Parameters
Resolution
SO2+SOF2, H2S, HF
≤0.1 ppm
CO
≤0.5 ppm
Purity
≤0.05%
Dew point
-20℃~ -60℃, ≤0.5℃
Accuracy
small range SO2+SOF2, H2S
measured value ≤10 ppm, error ≤±0.3 ppm
measured value>10 ppm, error ≤±3%
wide range SO2+SOF2
error ≤±3%
HF
error ≤±0.3 ppm
CO
measured value ≤50 ppm, error ≤±2.0 ppm
measured value>50 ppm, error ≤±4%
Purity
error ≤±0.2%
Dew point
-20℃~ -60℃,  ≤±1.0℃
Linearity
SO2+SOF2, H2S, HF and CO
≥99.96%
Purity
90-100%, linearity ≥99.96%
Dew point
-60 ~ 0℃, linearity ≥99.9%
Repeatability
SO2+SOF2, H2S, HF
measured value ≤10 ppm, repeatability≤±0.2 ppm
measured value >10 ppm, repeatbility ≤±2%
CO
measured value ≤50 ppm, repeatability≤±1.0 ppm
measured value >50 ppm, repeatbility ≤±2%
Purity
≤±0.1%
Dew point
≤±0.5℃
Range
SO2+SOF2
0 ~ 100 ppm; 0~2000 ppm (optional)
H2S
0 ~ 100 ppm
HF
0 ~ 20 ppm
CO
0 ~ 500 ppm
Purity
0 ~ 100 Vol.% SF6
Dew point
-100℃~ +20℃
Flowrate
Decomposition products, purity
200±20ml/min
Dew point
500±50ml/min
Operation condition
Temperature
-20℃~ +50℃
Humidity
10 ~ 95%RH
Altitude
≤4000m
Communication
USB
Input pressure 
0.15 ~ 1.0Mpa
Power supply
AC/DC; AC 110-240V, 50/60HZ; Built-in Lithium-ion battery works continuously over 30 hours; Battery charge and low volts protection.  
Dimension
W×D×H: 305 x 350 x 195mm, Net weight: 8.0kg
Calibration cycle
Once a year
Inlet gas adapter
16 pcs/sets of chromium-plated brass adapters are applicable for various gas outlets on the most of SF6 electrical equipments like MWB Siemens, Alstom, ABB, Hitachi, Mitsubishi etc. and pressure reducing valves on the gas cylinders.
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