Austrian SENSORE Limiting Current Type Trace Oxygen Sensor - SO-D0-020-A100C

I. Limiting Current TypeTrace Oxygen SensorSO-D0-020-A100C Description:

SO-D0-020-A100C is a limiting current type zirconia oxygen sensor with a range of 0.01%~2%, cable length 1 meter, capable of detecting oxygen as low as 100ppm. The trace oxygen sensor SO-D0-020-A100C is widely used in metal laser sintering 3D printers, nitrogen generation, fermentation and other fields.

II. Working Principle of Limiting Current Type Trace Oxygen Sensor SO-D0-020-A100C:

Because the current carrier in the zirconia electrolyte is oxygen ions, when a voltage is applied to the zirconia electrolytic cell, oxygen is pumped to the anode through the zirconia disc. If a cap with a hole is placed on the cathode of the electrolytic cell, the rate at which oxygen flows to the cathode is limited. Due to this rate limitation, as the applied voltage gradually increases, the current in the cell reaches saturation. This saturation current is called the limiting current, which is proportional to the oxygen concentration in the surrounding environment.

III. Applications of Limiting Current Type Trace Oxygen Sensor SO-D0-020-A100C:

Medical: Oxygen concentrators, incubators
Laboratory: Inert gas processing cabinets (glove boxes), bacterial incubators
Food industry: Packaging, food inspection, monitoring fruit ripening process (storage/transport)

Home/Cooking: Automated baking/roasting (high temperature >100°C)

Measurement technology: Fixed/portable oxygen measuring instruments, measurement under controlled oxygen content, air conditioning and circulation

Safety technology/Monitoring: Fire prevention (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

IV. Features of Limiting Current Type Trace Oxygen Sensor SO-D0-020-A100C:

Can measure oxygen concentration from 100 to 20000 ppm
High precision
Multiple models exhibit linear characteristics
Sensor signal has low dependence on temperature
Low cross-sensitivity
Long service life
In most cases, only a single-point calibration is required

V. Characteristic Data of Limiting Current Type Trace Oxygen Sensor SO-D0-020-A100C:

Measuring Gas	Oxygen
Measuring Medium	Gas
Measuring Principle	Limiting current type sensor
Measuring Range	0,01~2,0%
Response Time (t90)	2~25 seconds (depending on sensor type, gas flow, measuring chamber)
Sensor Voltage	0.7~1.6 volts
Heater Voltage	3.6~4.4 volts
Power Consumption	1.3~1.8 watts (depending on application and packaging)
Cold Resistance	R(25°C)=3.25Ω±0.20Ω
Warm-up Time	At least 30s
Operating Temperature	350°C depending on cable and filter assembly
Allowed Flow Rate [ml/min]	100~500 (250 optimal)
Lifetime (MTTF)	20,000 hours (*)