ATI B12 2-Wire Gas Transmitter

The B12 2-wire gas transmitters are simple, economic solutions for monitoring gas concentration levels in ambient air.


  • Select from wide range of gas sensors and concentration ranges to meet your monitoring needs
  • Transmits a 4-20 mA signal linearly proportional to gas concentration
  • Easy integration with NexSens data logging & telemetry products
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The B12 gas detector is a flexible component system providing a variety of options to meet individual gas detection and alarm requirements. Series B12 transmitters are loop-powered instruments that transmit a 4-20 mA signal linearly proportional to gas concentration.

The B12 detection systems consist of individual modules that can be located where required. Sensor/transmitters, located in the area where gas leakage or buildup might occur, provide the basic measurement for the system. Sensor transmitters are available in either NEMA 4X or explosion-proof versions.

Transmitters are normally supplied with the sensor close coupled to the enclosure. However, for special applications, the unit can be supplied with separate sensors that can be located up to 25 feet from the transmitter. Sensor duct mounting adapters and sensor flowcells can also be provided for specific applications.

When remote display and alarm relay functions are required, the B12 Wet Gas Transmitters can be connected to ATI's B14 Alarm Receiver System. This system will provide direct digital display of gas concentration, plus 3 alarm setpoints, remote alarm reset input, and retransmitted 4-20 mA output. Or, the B12 transmitter may be used separately and tied directly to the users' DCS, PLC, or other equipment.

Universal power supply modules provide DC power to receivers. The power supply is housed in a compact module similar to the receiver, and will accept inputs from 85 to 265 volts, AC or DC, without adjustment. The power supply also provides a power failure relay and charging for an optional battery back-up unit.

NexSens data logging and telemetry systems integrate easily with ATI process monitors and sensors, providing real-time remote data readings, alarm notifications, and powerful data processing and reporting capabilities.
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