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SF6 Decomposition Products Detector
 
Model: JH4000A-4
 
JH4000A-4 SF6 Electrical Equipment Decomposition Products Detector is a high precision, intelligent and portable device, able to make judgment rapidly and correctly based on the content of main decomposition products of insulation materials inside the SF6 electrical equipment like SF6 circuit breaker, instrument transformer, GIS and transformer. It detects SO2+SOF2, H2S, CO and HF. It is reliable, accurate and stable. 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. Decomposition products detection provides reliable evidence for the internal fault diagnosis and it is an effective measure for preventive and corrective maintenance.
 
  Features
 
*  Multi Components detection, high precision, excellent stability
 
---  Detect main decomposition products: SO2+ SOF2, H2S, CO, HF simultaneously and display separately.
 
*  Rapid test, less gas consumption and environment friendly
 
---  Compact, light weight;
---  Flowrate: 200±20ml /min;
---  Detection time: 2 mins; begin the next detection in a few seconds.
 
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.
---  Automatic calibration.
---  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
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%
Linearity
SO2+SOF2, H2S, HF and CO
≥99.96%
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%
Range
SO2+SOF2
0 ~ 100 ppm; 0~2000 ppm (optional)
H2S
0 ~ 100 ppm
HF
0 ~ 20 ppm
CO
0 ~ 500 ppm
Flowrate
 
200±20ml/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 18Ah battery works continuously over 60 hours; Battery charge and low volts protection.  
Dimension
W×D×H: 307 x 320 x 190mm, Net weight: 8.5kg
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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