FN311C Explosion-proof Oxygen Analyzer is a new-type intelligent industrial online analyzer researched and developed by combining imported high-performance electrochemical sensor with new microcomputer technology.

Application fields:

Oxygen content analysis at locations needing explosion protection in the production processes of such industries as chemicals, building materials, chemical fertilizer, petroleum, biological fermentation, and coal gas

Instrument characteristics:

Imported electrochemical sensor adopted, featuring long service life, high accuracy, and quick response;

Chinese menu and human-machine interface, making operation intuitive and convenient;

Large-screen 320×240 lattice LCD, able to simultaneously display parameters like oxygen content, date, and time;

Automatic temperature compensation, eliminating the affect from ambient temperature;

Timed automatic storing function, and stored data and curves available for viewing at any time;

Upper/lower limit alarm can be set at will within the whole range;

Standard RS232 or RS485 communication interface available for two-way communication with computer;

Isolated explosion-proof case adopted, so that the instrument can be directly installed on the site.

Technical parameters:

1. Measurement range: 0.00～1.00%/2.00%/10.0%/25% O2 optional;

2. Accuracy: ≤ ±2% F.S;

3. Stability: Zero drift ≤ ±1% F.S/7d;

                   Span drift ≤ ±1% F.S/7d;

4. Repeatability: ≤ ±0.5%;

5. Sample gas flow: 300±10 ml/min;

6. Response time: T90 ≤ 15 sec.;

7. Sample gas pressure: 0.05 MPa ≤ Inlet Pressure ≤ 0.1 MPa;

8. Resolution: 0.01%;

9. Contact capacity: 220 VAC, 1A      24 VDC, 1A;

10. Output signal: 4～20 mA;

11. Operating environment: Temperature: －5℃～＋45℃;

                                              Humidity: ≤ 90% RH;

12. Operating power supply: 220 VAC±10%, 50 Hz±5%;

13. Explosion-proof grade: Exd Ⅱ CT6

14. Overall dimensions: 300 mm (W) × 400 mm (H) × 200 mm (D);

15. Mounting dimensions: 330 mm (W) × 300 mm (H), with the center line as benchmark;

16. Mounting mode: Wall-mounted, mounting bolt M8×50;

17. Weight: About 25 kg