EN-500Ex Constant Explosion proof Oxygen AnalyzerDetailed product description：

The EN-500Ex constant explosion-proof oxygen analyzer is based on the principle of electrochemical detection. The sensor consists of a silver lead electrode to form an analytical cell. Oxygen in the measured gas diffuses to the surface of the electrode through permeation, undergoes oxidation-reduction reactions, generates electron gain and loss, and forms an electric current. The number of electron gain and loss is proportional to the concentration of oxygen. By detecting the current value of the measured gas, the concentration value of the measured gas can be determined. The EN-500Ex explosion-proof oxygen gas analyzer adopts imported high-performance electrochemical gas sensors and microprocessor technology, with functions such as digital display, upper and lower limit alarm, standard signal output, and relay contact alarm output. Suitable for Zone 1 and Zone 2 flammable and explosive hazardous areas with explosive and temperature groups T1 to T6 formed by combustible gases, vapors, and air, continuous monitoring of oxygen concentration in gases such as air, nitrogen, hydrogen, argon, etc.

The design and manufacturing of the EN-500Ex constant explosion-proof oxygen analyzer fully comply with the provisions of the national standard GB3836 1-2000 2-2000 3-2000 on "Explosion proof Electrical Equipment for Explosive Environments, Explosion proof Electrical Equipment" d ", and Intrinsic Safety Electrical Equipment" i ", and have been recognized by the national level instrument explosion-proof safety supervision and testing station. The instrument series has a combination structure of "explosion-proof" and "intrinsic safety", with the explosion-proof mark of "Exdib Ⅱ CT6" and the explosion-proof certificate number of "GYB03281".

Main technical parameters:
Measurement range: 0-1, 0-5%, 0-25% O2
Basic error: ± 2.5% FS
Zero drift: ± 2.5% FS/7d
Range drift: ± 2.5% FS/7d
Repetitive error: ± 1% FS
Resolution: 0.01%
Response time: T90 ＜ 30 seconds
Output signal: 4-20mA DC (allows external load<800 Ω) 0-10mA DC (allows external load<1500 Ω)
Alarm relay contact capacity: 220VAC/1A
Power consumption:<20W
Sample gas pressure: 0.1-1MPa
Sample gas flow rate: 300 milliliters per minute
Sample gas temperature: 0-40 ℃
Dimensions: 550 × 450 × 950mm (length × thickness × height)
Explosion proof mark: Exdib Ⅱ CT6
Explosion proof certificate number: GYB03281

The instrument should be able to operate normally under the following conditions:
Environmental temperature: 0 ℃~40 ℃;
Relative humidity: 20% to 80% (excluding condensation);
Atmospheric pressure: local atmospheric pressure;
Sunlight radiation: Avoid direct exposure;
The amount of dust in the environment: negligible;
Air velocity: 0.5m/s
Harmful gases in the environment: no strong corrosive gases;
Vibration: Avoid strong vibrations;
Ventilation: unobstructed;
Working position: Horizontal installation (± 10.);
Power supply voltage: 220V ± 22VAC
Power frequency: 50Hz ± 1Hz
External electric, magnetic, and electromagnetic fields: Avoid strong electromagnetic interference.