About Applied Sensing Technologies
AST designs and manufactures galvanic oxygen sensors and analyzers for industrial, safety, medical, and diving applications from Chino, California.
Our foundation
Applied Sensing Technologies was founded to manufacture oxygen sensors and analyzers, with an initial focus on industrial PPM and percentage oxygen replacements for established analyzer platforms. That replacement experience now extends to sensors used in industrial process, safety, respiratory, and diving systems.
AST principals bring decades of experience in oxygen sensor and analyzer design, development, manufacturing, application engineering, and field support. Their work includes patented technology and solutions for difficult applications such as contaminated natural gas streams that require careful sample conditioning.
Sensor engineering
AST addresses the practical failure modes that matter in real oxygen measurement systems.
Controlled manufacturing, testing, and packaging help AST PPM sensors recover from air exposure to below 10 PPM in approximately 35–40 minutes. An electro-etched smooth cathode, proprietary electrolyte, and coiled anode help reduce trapped oxygen and improve long-term stability.
AST combines a purpose-designed anode configuration with proprietary electrolyte to reduce inactive regions and enable more than 90% lead-anode utilization. The result is improved sensor life, performance, and signal stability.
Applications and compatibility
AST sensors cover low-PPM through 100% oxygen measurement for process control, air separation, nitrogen and argon production, personal safety, food packaging and storage, automotive exhaust, respiratory equipment, and sports diving.
Replacement families support many Teledyne models—including B-2C, A-2C, L-2C, Insta-Trace, R-17S, R-22D, R-33S, and R-33D—and Analytical Industries GPR, XLT, and PSR series sensors.
Open the cross referenceAST diving sensors use a moisture-repellent membrane engineered for the high-humidity conditions found in analyzers and rebreather systems.
View diving sensorsApplication support
AST engineering can help identify a replacement sensor or confirm a solution for a new oxygen measurement application.
