Apogee Instruments SO-421 Fast Response Thermistor Reference Oxygen Sensor

Description

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Used/fully functioning condition.  Cables range in length from 70-120 inches.
Input Voltage Requirement
5.5 to 24 V DC
Current Drain
0.6 mA (quiescent); 1.3 mA (active)
Measurement Range
0 to 100 % O₂
Measurement Repeatability
Less than 0.1 % of mV output at 20.95 % O₂
Non-linearity
Less than 1 %
Long-term Drift (Non-stability)
0.8 mV per year
Oxygen Consumption Rate
0.1 µmol O₂ per day at 20.95 % O₂ and 23 C
Response Time
14 s
Operating Environment
-20 to 60 C, 0 to 100 % relative humidity (non-condensing); 60 to 140 kPa
Input Voltage Requirement
12 V DC continuous (for heater), 2.5 V DC excitation (for thermistor)
Heater Current Drain
6.2 mA (74 mW power requirement when powered with 12 V DC source)
Thermistor Current Drain
0.1 mA DC at 70 C (maximum, assuming input excitation of 2.5 V DC)
Dimensions
32 mm diameter, 68 mm length
Mass
175 g (with 5 m of lead wire)
Warranty
4 years against defects in materials and workmanship
Manufactured
Made in the USA