FN211A Explosion-proof Oxygen Analyzer is a new-type intelligent intrinsically-safe explosion-proof industrial online analyzer researched and developed by combining imported high-performance electrochemical sensor with new microcomputer technology. It consists of a transmitter and a secondary meter.

Application fields:

Analysis on oxygen content in hydrogen in the process of water-electrolytic hydrogen or oxygen production; online detection and analysis on oxygen content at explosion-proof and non-explosion-proof locations in the production processes of such industries as chemical fertilizer, petroleum and chemicals, air separation, and biological fermentation

Instrument characteristics:

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

Small volume and light weight facilitating installation;

Intrinsically-safe explosion-proof design of split unit;

Transmitter with on-site display function, able to transmit output signal remotely up to 1000 m;

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

Alarm point can be set at will within the whole range.

Technical parameters:

1. Measurement range: 0.00～2.00%  0.00～25.0% O2 optional;

2. Accuracy: ≤ ±1% F.S;

3. Repeatability: ≤ ±0.5%;

4. Resolution: 0.01%;

5. Response time: T90 ≤ 10 sec.;

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

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

7. Sample gas flow: 300±10 ml/min;

8. Contact capacity: 120 VAC, 1A     24 VDC, 1A;

9. Output signal: 4～20 mA;

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

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

                                              Humidity: ≤ 90% RH;

12. Overall dimensions: Transmitter: 196 mm (W) × 132 mm (H) × 200 mm (D);

                                      Secondary meter: 160 mm (W) × 80 mm (H) × 170 mm (D);

13. Opening dimensions: Transmitter: 162 mm (W) × 132 mm (H);

                                          Secondary meter: 150 mm (W) × 75 mm (H);

14. Explosion-proof grade: Exia Ⅱ CT4;

15. Weight: Analyzer: 1.0 kg; transmitter: 1.5 kg;

16. Parameters of external guard grating: Vo ≤ 28 VDC, Io ≤ 93 mA, Cp ≤ 0.02 uF, Lp ≤ 1 mH