About US

Applied Sensing Technologies, Inc. was founded in Chino, California with the core objective to manufacture oxygen sensors and analyzers. AST’s initial focus is on replacement of Industrial PPM and % oxygen sensors for other major oxygen analyzer manufacturers such as Teledyne, Analytical Instruments Inc., and Analytical Industries Inc., and Advanced Micro Instruments. % O2 sensors for Scuba diving – replacement to Teledyne, AII, IT Gambert, Maxtec, Analox, City Technologies and others.

The principals of AST have several years of experience in the design, development, and manufacturing of O2 sensors and analyzers and hold several US Patents related to oxygen sensors design. They are adept in technical and field service support in a variety of industrial applications. Case in point: the oil and gas industry where oxygen measurement in natural gas often encounters contaminants interfering with measurement and hence requires extensive sample conditioning before analysis.

One of the challenges in the performance of a PPM O2 sensor is its sluggish recovery from a process upset condition; for example, during routine maintenance, disruption in sample flow rate due to loss of pressure or power shutdowns, or replacing a new sensor in the field. AST design team introduced a number of innovative step-by-step manufacturing techniques, final testing and packaging of the sensors under controlled environment, thus enabling AST’s PPM O2 sensor recovery from air to less than 10 PPM in under 35-40 minutes. Furthermore, the introduction of electro-etched smooth surfaced sensing cathode, proprietary electrolyte composition and a coiled shape anode eliminates the possibility for oxygen to hide and produce any spikes during use. This innovation translates into AST PPM oxygen sensors’ exceptional long term stability.

Stability and life of a % oxygen sensor is also a challenge when its anode, an essential component of a % oxygen sensor, has inactive regions within the anode structure. AST design team implemented a new anode material configuration and a proprietary electrolyte mixture, thus enabling full utilization of the lead anode (upward of 90%). This combination drastically improves the life, performance and stability of AST % oxygen sensors. ​

AST is currently offering a wide range of O2 sensors with the capability of measuring oxygen from low PPM O2 levels to 100% O2 in a variety of industrial environments & process control, air separation – Nitrogen and Argon production and certification, sports diving, personal safety, food packaging, food storage warehouse monitoring and automotive exhaust measurements.

Replacement for Teledyne Class B-2C, B-2C-XL, A-2C, L-2C, L-2C-XL, Insta Trace, Insta-Trace-XL, Insta-Trace CO2, R-17S, R-22D, R-33S, R-33D and Analytical Industries GPR-12-333, XLT-12-333, PSR-12-223, XLT-12-123, XLT-11-24, GPR-11-60, GPR-11-120, GPR-11-32-RTS, PSR-11-39-MD, PSR-11-39-JD, PSR-11-37-D2, PSR-11-37-D2-1, PSR-11-37-D3, PSR-11-37-D4 and many other models are available.

Oxygen sensor for Scuba Diving applications uses a moisture repellent membrane in front of the sensing membrane to allow for a smooth sensing function, even in environments with high humidity.