O2 Gas Sensor

The O2 Gas Sensor can be used to monitor gaseous oxygen levels in a variety of biology and chemistry experiments. The sensor is intended for measuring gaseous, not aqueous, O2 concentration.

SKU: O2-BTA Category:


The O2 Gas Sensor measures oxygen concentration in air, and is temperature compensated for use in different environments. It has a wide measurement range, allowing it to be used to study human and cellular respiration. The O2 Gas Sensor also includes a 250 mL bottle that can be used to study the rusting of iron or as a respiration chamber for monitoring plants and insects.

Measurement Range: 0–27% (0-270 ppt)
Accuracy (@ Standard Pressure 760 mm Hg): +/- 1% volume O2
Typical Resolution: 0.01%
Response Time: 90% of final reading in ~12 seconds
Warm-Up Time: Less than 5 seconds
Pressure Effect:
Directly proportional
Vout = Vout (standard) x (P/1013)
Pressure range: 0.5 atm to 1.5 atm

Output Signal Range: 0.3 to 5 VDC; 2.7 to 3.8 VDC @ 21% O2
Output Impedance: 1 KΩ
Input Voltage: 5 VDC +/–0.25 VDC
Gas Sampling Mode: Diffusion
Normal Operating Temperature Range: 20°C to 30°C
Operating Temperature Range: 5 to 40°C (with calibration)
Operating Humidity Range: 0 to 95% RH
Storage Temperature Range: –20 to +60°C
Sensor Tube: 45 mm length, 28 mm OD
Total length: 135 mm

Vernier O2 Gas Sensor
250 mL gas sampling bottle

250 mL Nalgene Bottle w/Lid (CO2-BTL)
BioChamber 2000 (BC-2000)
BioChamber 250 (BC-250)
O2 Gas Sensor to Spirometer Adapter (O2-SPR)

User Manual: https://www.vernier.com/manuals/o2-bta/
Warranty: 5-year limited warranty
FAQ: https://www.vernier.com/til/1421/


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