% O2 Sensors - Industrial Applications

Model SRX-CA32-RTS Oxygen Sensor - Replaces GPR-11-32-RTS O2 sensor

AST Model SRX-CA32-RTS Oxygen Sensor, a galvanic type micro fuel cell specific to oxygen, replaces AII Model GPR-11-32-RTS % oxygen sensor used in GPR-2000, GPR-2500, GPR-25XP, GPR-28 and GPR-2500N analyzers. Sensor's expected sensor life is 32 months in air under ambient temperature and pressure. It offers fast response…

Product references
Application supportFit and process guidance from an AST specialist. AST engineeringOxygen measurement expertise from Southern California.

Technical information

Product details

Technical overview

AST Model SRX-CA32-RTS Oxygen Sensor, a galvanic type micro fuel cell specific to oxygen, replaces AII Model GPR-11-32-RTS % oxygen sensor used in GPR-2000, GPR-2500, GPR-25XP, GPR-28 and GPR-2500N analyzers. Sensor’s expected sensor life is 32 months in air under ambient temperature and pressure. It offers fast response yet longer expected operating life. Senor is designed, developed and manufactured in the USA.

Applications and guidance

Advanced Sensor Technology

Model SRX-CA32-RTS Oxygen Sensor

Model SRX-CA32-RTS Oxygen Sensor Applied Sensing Technologies (AST) offers this galvanic-type electrochemical micro fuel cell specifically engineered for accurate % oxygen measurement. Because industrial oxygen monitoring demands both precision and reliability, this sensor delivers stable output, fast response, and extended service life. As a result, it provides a dependable solution for demanding analyzer applications.

Furthermore, it is designed as a direct replacement for the Analytical Industries Inc (AII) Model GPR-11-32-RTS % oxygen sensor. Consequently, users can integrate it seamlessly into existing analyzer systems without modifying equipment. The sensor is fully compatible with the following AII analyzers:

  • GPR-2000

  • GPR-2500

  • GPR-25XP

  • GPR-28

  • GPR-2500N

Therefore, facilities can maintain continuous operation while upgrading to AST’s proven sensor technology.

Performance and Longevity

In addition to compatibility, long-term performance remains a key advantage. Under ambient temperature and pressure conditions, the sensor offers an expected service life of up to 32 months in air. At the same time, it responds quickly to changes in oxygen concentration. This balance of fast response and extended operating life helps reduce maintenance frequency while maintaining accurate real-time measurement.

Designed and Manufactured in the USA

Equally important, AST designs, develops, and manufactures this oxygen sensor in the USA. By controlling the entire engineering and production process, AST ensures consistent quality and oxygen-specific performance. Ultimately, this % Oxygen Sensor combines seamless replacement compatibility, rapid response, and long service life—providing reliable % oxygen measurement in critical industrial applications.

Model SRX-CA32-RTS Oxygen Sensor Replacement

  • AII Model GPR-11-32-RTS % O2 Sensor
Specifications and compatibility references
Product family
% O2 Sensors - Industrial Applications
References
GPR-11-32-RTS, SRX-CA32-RTS

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