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SO-431: 0-30% SDI-12 Output Oxygen Sensor Click here to enlarge
SO-431: 0-30% SDI-12 Output Oxygen Sensor Click here to enlarge
SO-431: 0-30% SDI-12 Output Oxygen Sensor Click here to enlarge
SO-431: 0-30% SDI-12 Output Oxygen Sensor SO-431: 0-30% SDI-12 Output Oxygen Sensor SO-431: 0-30% SDI-12 Output Oxygen Sensor

SO-431: 0-30% SDI-12 Output Oxygen Sensor

$493.37

The SO-431 has a standard response time of 15 seconds, is designed for use in soil or atmospheric applications, and has high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. It comes with a thermistor temperature sensor to correct for temperature changes and a resistive heater to raise the temperature of the membrane approximately two degrees above ambient temperature to keep condensation from occurring on the Teflon membrane and blocking the diffusion path of the sensor. Typical applications include measurement of O2 in laboratory experiments, monitoring gaseous O2 in indoor environments for climate control, monitoring of O2 levels in compost piles and mine tailings, monitoring redox potential in soils, and determination of respiration rates through measurement of O2 consumption in sealed chambers or measurement of O2 gradients in soil/porous media.

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MORE INFORMATION ON APOGEE OXYGEN SENSORS >> click here

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Where to Buy

The SO-431 has a standard response time of 15 seconds, is designed for use in soil or atmospheric applications, and has high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. It comes with a thermistor temperature sensor to correct for temperature changes and a resistive heater to raise the temperature of the membrane approximately two degrees above ambient temperature to keep condensation from occurring on the Teflon membrane and blocking the diffusion path of the sensor. Typical applications include measurement of O2 in laboratory experiments, monitoring gaseous O2 in indoor environments for climate control, monitoring of O2 levels in compost piles and mine tailings, monitoring redox potential in soils, and determination of respiration rates through measurement of O2 consumption in sealed chambers or measurement of O2 gradients in soil/porous media.

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

 

MORE INFORMATION ON APOGEE OXYGEN SENSORS >> click here

Current Stock:
Input Voltage Requirement 5.5 to 2.4 V DV Current Draw 0.6 mA (quiescent); 1.3 mA (active) Input Voltage for Heater 12 V DC continuous Input Voltage for Thermistor 2.5 V DC excitation Heater Current Draw 6.2 mA (74 mW power requirement when powered with 12 V DC source) Thermistor Current Draw 0.1 mA DC at 70 C (maximum, assuming input excitation of 2.5 V DC) Measurement Range 0 to 30 % O2 Output SDI-12 Measurement Repeatability Less than 0.1 % of mV output at 20.95 % O2 Non-linearity Less than 1 % Long-term Drift 5 % signal decline per year Oxygen Consumption Rate 0.1 μmol O₂ per day at 20.95 % O₂ and 23 C (galvanic cell sensors consume O₂ in a chemical reaction with the electrolyte, which produces an electrical current) Response Time 15 seconds Operating Environment -20 to 60 C; 0 to 100 % relative humidity (non-condensing); 60 to 140 kPa Dimensions 32 mm diameter, 68 mm length Diffusion Head (accessory) Dimensions 32 mm diameter, 35 mm length, 125 mm mesh screen Flow Through Head (accessory) Dimensions 32 mm diameter, 91 mm length, 0.25 inch barbed nylon connectors Mass 175 g (with 5 m of lead wire) Cable 5 m Influence from Various Gases Sensors are unaffected by CO, CO₂, NO, NO₂, H₂S, H₂, and CH₄. There is a small effect (approximately 1 %) from NH₃, HCI, and C₆H₆ (benzene). Sensors are sensitive to SO₂ (signal responds to SO₂ in a similar fashion to O₂). Sensors can be damaged by O Warranty 4 years against defects in materials and workmanship

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