Brand: Applied Sensing Technologies (AST)

APPLIED SRX-CT23 Oxygen Sensor

Name: AST SRX-CT23 Oxygen Sensor Teledyne B-3 – Datasheet & Quote
Brand: Applied Sensing Technologies (AST)

Description

Overview

The AST SRX-CT23 oxygen sensor is a galvanic type micro fuel cell used in industrial oxygen analyzers. It measures oxygen from 0.01% to 25% with quick response and great accuracy, providing reliable measurement for process control and gas analysis applications.

The SRX-CT23 is a drop-in replacement for the Teledyne Class B-3, AII PSR-11-23, and Panametrics OX-3 percent oxygen sensors, and is used in analyzers such as the Teledyne model 3110 with part number C06689-B3.

Engineering & Design

The sensor operates on the galvanic micro fuel cell principle, producing an electrical signal proportional to the oxygen concentration in the sample gas. A proprietary electrolyte formulation and unique anode structure provide stable output and long service life.

The expected sensor life in air is 15 months, and the sensor provides fast response to changes in oxygen concentration, making it suitable for continuous monitoring and process control duties where measurement stability matters.

Key Features

Galvanic micro fuel cell oxygen sensor
Measuring range 0.01% to 25% O2
Quick response and great accuracy
Drop-in replacement for Teledyne B-3
Replaces AII PSR-11-23 and Panametrics OX-3
Used in Teledyne model 3110 analyzers
Expected life 15 months in air
Proprietary electrolyte formulation
Unique anode structure for stability

Applications

Percent oxygen analysis in process gas
Oxygen analyzer sensor replacement
Industrial process control monitoring
Combustion and emissions measurement
Gas analysis laboratory equipment

Specifications

Specification	Value
Manufacturer	AST (Applied Sensing Technologies)
Model	SRX-CT23
Type	Galvanic micro fuel cell
Measuring Range	0.01% to 25% O2
Replaces	Teledyne B-3, AII PSR-11-23, Panametrics OX-3
Analyzer Compatibility	Teledyne 3110 (C06689-B3)
Expected Life	15 months in air
Response	Quick response
Output	Proportional to O2 concentration

Analyzer uptime depends on sensor availability, and the AST SRX-CT23 oxygen sensor keeps analyzers measuring, which is why Seven Star LLC supplies the AST SRX-CT23 oxygen sensor as a drop-in replacement for common analyzer models.

The Applied SRX-CT23 oxygen sensor is the replacement cell of the flue gas oxygen analyzer and measures the oxygen concentration with the electrochemical principle. The sensor is installed in the probe body of the analyzer and is connected with the two-wire pigtail to the transmitter. The cell is replaced during the routine maintenance of the boiler analyzer, and the reading is verified with the span gas after the replacement.

The SRX-CT23 sensor is matched to the analyzer probe of the measurement point and the response of the cell is verified against the reference gas after the installation. The cell is stored in the sealed pouch until the replacement and the shelf life is printed on the label. The analyzer transmitter displays the measured oxygen and the replacement interval is recorded in the maintenance log of the boiler.

The SRX-CT23 replacement sensor is tested with the analyzer before the installation and the output is verified against the ambient air reading. The sensor connector is keyed to prevent the reversed wiring, and the analyzer recognizes the new cell after the power cycle. The maintenance stock covers the annual replacement of the cells on the multi probe analyzers.

Why Seven Star LLC

Seven Star LLC supplies the AST SRX-CT23 oxygen sensor for analyzer maintenance across the Gulf, with verified compatibility information for replacement programmes. Our team assists with identifying the correct sensor for your analyzer model.

We support gas analysis and process control customers with reliable B2B supply of analyzer sensors and spares throughout the GCC.

Sensor Performance

The galvanic micro fuel cell principle generates a signal directly proportional to oxygen concentration, and the proprietary electrolyte and anode construction provide the stable output that process analyzers require. The 0.01% to 25% range covers the percent-level measurements typical of combustion and process control applications.

The 15-month life in air gives maintenance planners a predictable replacement interval, and the drop-in compatibility with Teledyne B-3, PSR-11-23, and OX-3 sensors means no wiring or analyzer modification is required.

Request a Quote for APPLIED SRX-CT23 Oxygen Sensor

For the AST SRX-CT23 oxygen sensor, SRX-CT23 replacement oxygen sensor or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your measurement range, connection and configuration, and our specialists will respond with a detailed commercial proposal and the AST product documentation.

Confirming the Replacement Sensor

Micro fuel cell sensors look similar across ranges and manufacturers, so check the replacement carefully before ordering. Read the part number on the existing sensor and in the analyzer manual, confirm that the analyzer is designed for a percent-range sensor of this type, and compare the connector style and physical size with the installed cell. The SRX-CT23 is listed as a drop-in replacement for the Teledyne B-3, AII PSR-11-23 and Panametrics OX-3 sensors; if your analyzer uses a different sensor designation, confirm compatibility with our team first.

Replacing and Starting Up the Sensor

Keep the new sensor in its sealed packaging until installation and check the date information on the label
Follow the analyzer manual for power-down and sensor removal, and avoid touching the sensing surface
After fitting, allow the output to stabilise before calibration, as a new cell needs time to settle
Calibrate with air or a certified span gas as specified for the analyzer, and check the zero or low reading where the analyzer requires it
Record the installation date to plan the next replacement

Handling and Troubleshooting

Galvanic cells contain electrolyte and are consumed during use, so they should be stored cool and used within their shelf life. A cell that cannot be spanned, responds slowly or reads low in air is usually approaching end of life. Readings that drift high can also be caused by leaks in the sample system rather than by the sensor. A leaking or damaged cell should be removed promptly and disposed of in line with local regulations, and the cell holder cleaned before a new sensor is fitted.

Analyzer Support in Oman and the GCC

High ambient temperatures in the region can shorten sensor life if analyzers and spare stock are kept in hot shelters or warehouses. Planning replacements and keeping a small, well-stored stock of cells helps maintain analyzer availability at gas plants, refineries and industrial gas facilities.

Supply from Seven Star LLC

Seven Star LLC supplies the AST SRX-CT23 oxygen sensor and other replacement cells for oxygen analyzers. Send the analyzer model and existing sensor part number, and our team will confirm the match before quotation.

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About brand

Applied Sensing Technologies (AST), based in Chino, California, makes galvanic oxygen sensors, many designed as drop-in replacements for the sensors of other analyzers.

Seven Star LLC is an independent supplier in Muscat. We list AST oxygen sensors for analyzer users in Oman and the GCC.

Applied Sensing Technologies product series

The SRX-CT23 is an oxygen sensor.

Galvanic oxygen sensors are consumable parts: the cell is used up in service and must be changed at intervals that depend on oxygen concentration and temperature. The replacement must match the analyzer type, range (trace ppm or percent) and connector, and sensors should be stored sealed and used within their shelf life.