(Special order. 14-day lead time. Please contact Silent Diving directly for more information.)

Coaxial Swivel Connection

Important Information: Accuracy of Cells

The APD16 oxygen sensor, distributed by Silent Diving, is known for its stability but requires specific handling for optimal performance. Once the Inspiration scrubber warms up from top to bottom, which takes 15 to 20 minutes after the start of the dive, the cells tend to read 0.05 bar higher than the actual PO2.

For example, while the cells display a PO2 of 1.30 bar (the setpoint), the actual PO2, measured with a calibrated fast-response external analyzer, is actually 1.25 bar. Although this trait is undesirable, it is consistent and reliable, making it easy to compensate for by reducing the High Gradient Factor by 5. For instance, if you typically use a Gradient Factor of 90, adjust it to 85; if you use 85, adjust it to 80, and so on.

This adjustment ensures that your dive maintains the correct PO2 levels, providing a safe and accurate reading throughout your dive. The APD16 remains a reliable choice for divers who understand and can manage this necessary calibration.

For more information or to place a special order, please contact Silent Diving directly.