Product imagery shown for reference. Confirm the exact configuration before ordering.
SRX-CTR37 Replaces PSR-11-39-MDSX1 Oxygen Sensor
AST Model SRX-CTR37 diving oxygen sensor replaces Analytical Industries Model PSR-11-39-MDSX1 for Submatrix SCR 100 Rebreather. Sensor has 8.5-13mV in air, 2-PIN Molex connector, flat front end. 42 months expected sensor life. Proprietary electrolyte formulation ensures full utilization of Pb anode, thus providing longer life without signal drift…
Technical information
Product details
Technical overview
AST Model SRX-CTR37 diving oxygen sensor replaces Analytical Industries Model PSR-11-39-MDSX1 for Submatrix SCR 100 Rebreather. Sensor has 8.5-13mV in air, 2-PIN Molex connector, flat front end. 42 months expected sensor life. Proprietary electrolyte formulation ensures full utilization of Pb anode, thus providing longer life without signal drift and minimizing periodic calibration requirement. Sensor is designed, developed and manufactured in the USA
Applications and guidance
Advanced Sensor Technology
AST Model SRX-CTR37 diving oxygen sensor replaces Analytical Industries Model PSR-11-39-MDSX1 for Submatrix SCR 100 Rebreather. Sensor has 8.5-13mV in air, 2-PIN Molex connector, flat front end. 42 months expected sensor life. Proprietary electrolyte formulation ensures full utilization of Pb anode, thus providing longer life without signal drift and minimizing periodic calibration requirement. Sensor is designed, developed and manufactured in the USA
AST Model SRX-CTR33 Diving O2 Sensor Replaces
- PSR-11-39-ATA
- Analox 9100-9212-94
- Vandagraph R-33VAN
Specifications and compatibility references
Application support
Not sure this is the right sensor?
Send the existing sensor or analyzer model and AST will help confirm the correct replacement.




