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icruzJul 31, 2025
Why Teledyne AX300 Analytical Instruments sensor will not read below 22 % after calibration in 100% O2?
- TTimothy CallahanJul 31, 2025
If your Teledyne Analytical Instruments sensor will not read below 22% after calibration in 100% O2, it could be due to an invalid calibration, room air enriched with excess oxygen, or the oxygen concentration at the sensor being significantly higher than 21%. Recalibrate using dry gas. Ensure at least 6" (30 cm) of tubing is attached to the exhaust side of the tee adapter to prevent back filling and that the O2 flow rate does not exceed 5 l/min. Take the analyzer to a well-ventilated area and check the reading again. Try calibrating with a known good sensor, and if this fails, contact customer support.