ATi's B12 series 2-wire wet gas transmitters are simple, economical units for monitoring hazardous gases in ambient air.

B12 series transmitters are loop-powered instruments that transmit a 4-20mA signal linearly proportional to gas concentration.

Operated from a 24VDC power supply, the transmitter will drive loads up to 675 ohms, which is sufficient for most monitoring applications.

Alternatively, the unit can operate at 12VDC, with reduced output load, for applications requiring battery operation.

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 8m from the transmitter.

Sensor duct mounting adapters and sensor flowcells can also be provided for specific applications.

Technical Specifications:

  • Oxidant gases: Cl2, Br2, ClO2, O3
  • Acid gases: HF, HCl Hydrogen
  • Range: 0-10, 0-20, 0-50, or 0-100 ppm for oxidant or acid gases. 0-2% or 0-10% for hydrogen
  • Accuracy: Generally ±5% of value, but limited by available calibration gas accuracy