Fixed gas monitors

Next-generation iTrans fixed-point gas monitors employ an intelligent electronics foundation to provide one or two points of detection from a single head. The microprocessor-controlled monitors are capable of independent operation or multi-point system configurations and can transmit a 4-20 mA signal or Modbus RTU digital output to any control device.

The iTrans flexible platform allows for any combination of gas sensors to be mounted on-board or remotely, up to 200 metres/s, for maximum flexibility and lower installation costs. Available sensors include CO, H2S, O2, LEL (catalytic and BBIR), NH3, NO, NO2, SO2, HCN, Cl2, ClO2, PH3 and HCl, for any specific environment.

The Modbus RTU interface allows systems integrators to connect iTrans monitors or non-display sensor heads to existing or new SCADA, HMI and PLC systems. Using standard three- or four-wire connections, the system is capable of accommodating over 200 transmitters in RS485 bus configuration.

With onboard relays as standard, the iTrans monitor has the added ability of standalone operation, activating alarms, horns or fans. The unit also offers a relay deactivation feature to prevent accidental alarm activation during calibrations. All iTrans transmitters carry safety features including automatic sensor recognition, access code security, zero and calibration fault protection. The iTrans monitors have the added features of non-intrusive calibration, 'smart' sensing technology, a large visual LED display, programmable alarms, and onboard indicators of sensor life.

The iTrans monitors are housed in an explosion-proof enclosure suitable for Class I, Division 1, Groups B, C and D environments, and carry the NRTL/c, CSA, Cenelec (ATEX) and are AUSEx approved for Exd applications.