a. Menu can be switched between Chinese and English and the operation is intuitive and convenient;
b. 320×240 graphic dot-matrix color LCD display is clear to see;
c. The original imported fuel cell sensor has a high measurement accuracy, rapid response speed, long calibration cycle and strong anti-interference capability, etc.;
d. With the gas path blockage alarm and self-protection function, the instrument could turn off the sampling pump automatically when the gas circuit malfunctions, which could extend the service life of sampling pump and sensor;
e. Outrange protection function could cut off the gas circuit automatically when the oxygen concentration is higher than the protection concentration level, preventing damaging the sensor because of exposing the sensor to high-oxygen-concentration environment for too long;
f. Automatic temperature compensation function could reduce the impact of environmental temperature changes on the measurement accuracy;
g. The instrument allows multi-point fractional liner calibration, meeting the need for an accurate measurement of oxygen content among the full range;
h. 40 thousand pieces of historical data can be stored locally automatically and can be read at any time;
i. Original imported sampling pump (extraction sampling) is built in and has a long service life and stable performance;
j. RS232 (default) or RS485 digital communication port can be selected according to clients’ requirement, to realize unidirectional or bidirectional communication with computer or other digital communication facilities.
l Measurement Principle: Fuel cell
l Display Mode: 320×240 dot matrix color LCD
l Measurement Range: 0~10/100/1000PPm O2 (trace)
0~10%/21%/25%/100% O2 (normal)
l Measurement Accuracy: 0~1000PPm/10%/21%/25%/100%≤±1%FS
0~100PPm≤±2%FS
0~10PPm≤±5%FS
l Resolution: 0.1PPm (trace)
0.01 %(normal)
l Repeatability: ≤±1.0%FS
l Response Time: T90≤60S (trace)
T90≤40S (normal)
l Output Port: 4-20mA.DC (Non-isolated output, load resistance＜1KΩ)
0-10V.DC (Non-isolated output, load resistance>10KΩ)
1 way of programmable alarm output (Dry contact type, maximum load 220V/2A)
2 ways of instrument status signal output
l Communication Mode: RS232 (default) or RS485
l Power Supply: AC85~264V 50/60Hz, power dissipation＜25VA
l Environment Temperature: -10℃~+50℃
l Storage Environment Humidity: <90％RH, non-condensing
l Operation Environment Humidity: <100％RH, non-condensing
l Sample Gas Temperature: 0℃~40℃
l Sampling Mode: Gas in or extraction sampling (please indicate sampling mode when ordering)
l Sample Gas Flow: 1.5~2L/min
l Gas Inlet Pressure: Gas in: 5Kpa≤ relative pressure≤100Kpa (relief valve is recommended if the pressure＞100Kpa)
Extraction sampling: -10Kpa≤ relative pressure ≤5Kpa(please indicate the specific negative pressure value when ordering if the pressure＜5Kpa since it will decide the gas circuit structure)
l Gas Outlet Pressure: Free venting (under safe conditions)
l Background Gas: N2 or inert, acid and reducing gas, etc.
l Size: 176mm×251mm×302mm (H×W×D)
l Hole-Cutting Size: 178mm×212mm (H×W) (in embedded mounting)
l Sensor Service Life: >24 months (under normal conditions of use)
l Gas Circuit Port: NPT 1/8 internal thread
l Instrument Weight: Net weight 5.0Kg
l Installation Method: Embedded mounting / counter mounting
l Measurement range
l Measured gas pressure
l Background gas composition
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