AST-75D-PO2 Oxygen Sensor – Replaces AII-11-75-PO2-D Oxygen Sensor

AST-75D-PO2 oxygen sensor replaces AII models AII-11-75-PO2 and AII-11-75-PO2-D used in Palm O2 analyzers. It is designed for internal mounting within the analyzer. For external applications, the AST-75D-PO2-R model is recommended.

The AST-75D-PO2 Oxygen Sensor features an advanced design with a proprietary lead (Pb) anode structure. As a result, it delivers excellent stability and ensures full utilization of the anode. This design prevents significant signal drift and improves overall performance.

In addition, the super activated anode reduces the need for frequent calibration. Therefore, users benefit from extended sensor life and lower maintenance requirements. Due to the super activated anode, up to 80% of the anode is consumed before the sensor loses its output beyond a certain threshold. The response time of this sensor to a step change in oxygen concentration is very fast, typically less than 9 sec. The expected life of this sensor in air at ambient temperature and pressure is 36 months.

Furthermore, the geometry of the anode plays a critical role in internal electrochemical reactions. Its optimized structure ensures consistent and reliable operation. As a result, the sensor maintains excellent linearity from air up to 1.6 atmospheres of oxygen. This makes it ideal for accurate oxygen monitoring in diving applications.

Finally, AST oxygen sensors are designed, developed, and manufactured in the USA, ensuring high quality and dependable performance.