B12 2-Wire Gas Transmitter

ATi’s B12 2-Wire Gas Detector is a loop-powered transmitter for toxic gas detection with multiple sensor mounting configurations.

Monitoring hazardous gases in ambient air

ATi’s B12 2-Wire Gas Detectors are loop-powered instruments that transmit a 4-20 mA signal linearly proportional to gas concentration. Operated from a 24 VDC power supply, the transmitter will drive loads up to 675 ohms, sufficient for most monitoring applications. Alternatively, the unit can operate at 12 VDC with reduced output load for applications requiring battery operation. 

These detectors 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. Contact ATi with details of any special requirements.

Features & specifications

  • Wide range of gases available from sensor list
  • Loop-powered 4–20 mA, 675 ohms maximum at 24 VDC
  • 12–30 VDC
  • Explosion-proof enclosure optional, Class 1, Div., 1, Groups B, C, & D
  • Operating temperature between -30° to +55°C (except oxygen, which is -10° to +55°C)
  • Sensor Pressure Limits: 7–30 PSIA (0.5–2 Bar)
  • Optional 3-Digit LCD

Key benefits

  • Capable of monitoring a large range of gases
  • Suitable for applications requiring battery operation

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