Austria SENSORE limiting current type zirconia oxygen sensor for oxygen concentrators, glove boxes, 3D printing, and air separation equipment - SO-E2-250

I. Working principle of limiting current type zirconia oxygen sensor SO-E2-250: 

BecauseSince the charge carriers in the zirconia electrolyte are oxygen ions, when a voltage is applied to the zirconia electrolytic cell, oxygen is pumped through the zirconia disc to the anode. If a perforated cap is placed on the cathode of the cell, the flow of oxygen to the cathodethe rate at the electrode will be limited. Due to this rate limitation, as the applied voltage gradually increases, the current in the electrolytic cell will reach saturation. This saturation current is called the limiting current, which is proportional to the oxygen concentration in the surrounding environment.proportional to the degree.

 

II. Limiting current type zirconia oxygen sensor SO-E2-250Applications:

Medical: oxygen concentrators, Incubator
Laboratory: inert gas processing cabinets (glove boxes), bacterial incubators
Food industry: packaging, food inspection, Monitoring fruit ripening process(Storage/Transport)

Home/Cooking: automated baking/Baking (high temperature>100℃）

Measurement technique: fixed/Portable oxygen measuring instruments, Measurement with controlled oxygen content, air conditioning and circulation

Safety technology/Monitoring: fire protection (nitrogen enrichment, e.g., server rooms), greenhouses, wine cellars, gas storage, refineries, diving, fermentation units
Electrical industry: inert gas processors and cabinets, Inert gas welding monitoring, Storage under nitrogen enrichment (anti-oxidation), drying equipment, nitrogen concentrators, exhaust gas measurement

III. Limiting current type zirconia oxygen sensor SO-E2-250Advantages of: 

Wide measuring range,10 ppm~96%Oxygen
High Precision
Multiple models exhibit linear characteristics
Small dependence of sensor signal on temperature
Low cross-sensitivity
Long service life
In most cases, only a“Single-point calibration”

IV. Limiting current type zirconia oxygen sensor SO-E2-250Characteristic data:

Measuring gas: oxygen concentration
Measuring medium: gas
Measurement principle: limiting current type sensor
Measurement Range:Type SO-E2-250     0,10 – 25,0 vol.% O2

Response time(t90)2 ~25Second(Depends on sensor type, gas flow rate, measurement chamber)

Sensor voltage/Heating Voltage/Power consumption/Heater cold resistance

Sensor voltage: 0,7 ~ 1,6Volt

Heating Voltage:3.6 ~ 4.4Volt

Power consumption:1.3 ~ 1.8Watt(Depends on application and packaging)

Cold resistance:R(25°C) = 3.25 Ω±0.20 Ω

Preheating time: at least30 s

Operating temperature up to:350℃    Depends on the cable and filter assembly (refer to specifications and cable assembly section)

Allowed volumetric flow rate(Sensor purge)

For all types of sensors, the flow rate depends on the sensor purge method (direct current, gas flow shape, etc.) and the measurement chamber size, SO-E1-xxx (TO8 + SoftTube connection, direct ventilation)Except.

Allowed flow rate[ml/min]: 100 - 500 (250Optimal)Lifespan(MTTF)~ 20.000Hours(*)

* This depends on the measuring medium. The specified lifetime refers toSO-xx-250andSO-xx-960sensor. Failure to reach or exceeding the service life implies slight deviations in specifications.

Vibration resistance
TO8andTO39Tube-housed sensor(SO-Bx-xxx, SO-Ex-xxx, SO-Ax-xxx) Meets European standardsEN60068-2-6 (Sinusoidal vibration test).

V. Limiting current type zirconia oxygen sensor SO-E2-250Specifications: