This sensor measures the amount of Oxygen gas in air and is suitable for soil and laboratory studies.

They are galvanic cell type sensors with a lead anode, a gold cathode, an acid electrolyte and a Teflon membrane. The current flow between the electrodes is proportional to the oxygen concentration being measured. An internal bridge resistor is used to provide a mV output.

Specifications

• Range: 0-100% O2
• Accuracy:< 0.02% O2 drift per day
• Repeatability:±0.001% O2 (10 ppm)
• Input power: 12 V power for heater, 2.5 V excitation for thermistor
• Operating environment: -20 to 60 °C; 0 to 100% RH; 60 to 140 kPa

Options

• Response Time: Standard (Soil - more stable) 60 seconds or Fast 14 seconds
• Temperature Correction: Thermistor (more accurate) or Thermocouple (lower power)
• Air Flow: Diffusion (suitable for soils) or Flow-Through (in-line applications) or Both