Basic Principle
A protective gas free of combustible substances is charged into the positive-pressure chamber. By means of continuous ventilation or pressure compensation, the pressure inside the positive-pressure chamber is kept higher than the external pressure, so that external combustible gases cannot enter the chamber, creating a safe environment for the electrical equipment inside the positive-pressure chamber.
Product Advantages
- Positive-pressure explosion-proof, Ex d px ⅡC T4 Gd, suitable for most explosion-proof applications;
- Explosion-proof touchscreen design, allowing direct operation in explosion-proof areas;
- Multiple detector options and multi-stream design, flexibly configurable according to user requirements;
- Independently developed dedicated analysis software, intelligent and easy to operate;
- Simple structure, reasonable layout, safe and reliable, fast analysis speed, high accuracy; can replace manual testing, with a wide detection range, suitable for the analysis requirements of various process samples.
Instrument Parameters
Working conditions: Power supply: 220V, 50Hz
Ambient temperature: 5℃~35℃
Ambient humidity: 5%~95%
Power: 5KW (power increases with the length of heat-traced lines)
Detector types: TCD, FID, FPD; up to 3 detectors can be installed simultaneously
Measurement range: TCD 100ppm~100%; FID 0.1ppm~100%; FPD 100ppb~0.1%
Explosion-proof marking: Positive-pressure explosion-proof ExdbebibmbpxbⅡCT4 Gd
Protection rating: IP65
Output signal: 4~20mA
Communication mode: RS232 or RS485 (protocol: Modbus RTU)
Instrument air: Clean air 0.4—0.6MPa
Dimensions: 360×800×970mm
Net weight: 110kg
Typical Chromatogram
Manufacturer: Shandong Huifen Instrument Co., Ltd.

