AST-33D1 Diving Oxygen Sensor – replaces Nuvair 9510 and R33D1-NUV

AST-33D1 Diving Oxygen Sensor

The AST-33D1 Diving Oxygen Sensor from Applied Sensing Technologies is a drop-in replacement for Teledyne R33D1-NUV, NuVair 9510, and Analox 9121-0 oxygen sensors. It also replaces Analytical Industries PSR-11-37-D2-1 and IT Gambert D-09 oxygen sensors.

This sensor works with several diving and gas analysis instruments. In particular, it operates with the Nuvair Nitrox Stick system and the Analox Mini O2 Analyzer. Because it is a form-fit replacement, users can install the sensor easily without modifying the equipment.

The sensor features an external casing with an M16 × 1 mm threaded front end, which ensures secure installation in compatible analyzers and oxygen monitoring systems.

In addition, the sensor incorporates a proprietary electrolyte formulation that ensures full utilization of the lead (Pb) anode. As a result, the sensor delivers longer operating life with minimal signal drift, which reduces the need for frequent calibration.

Furthermore, the geometry of the anode material plays an important role in the internal electrochemical reactions. The activated anode and optimized geometry maintain excellent linearity from air up to 100% oxygen, which ensures accurate oxygen measurement across a wide operating range.

Finally, the AST-33D1 oxygen sensor is designed, developed, and manufactured in the United States by Applied Sensing Technologies, ensuring dependable quality and performance.