International Gas Detectors T750BAV-O2-NHS Gas Detector with Audible Visual Alarms
International Gas Detectors T750BAV-O2-NHS Gas Detector with Audible Visual AlarmsThe TOC-750 is factory calibrated for its target gas. The target gas is indicated on the product i.e. CH4 LPG etc.The TOC-750 will respond to any flammable gas but can only be calibrated to be correct response to one.The detector front assembly simply plugs onto the indicated connector. Alarm actions are indicated on the following page for each detector type. This makes service replacement vert simple as the toxic IR detector assembly is pre-calibrated and can just be plugged in to enable operation.The detector node relay output can be used as an alarm interface to external systems run additional audio-visual alarms or directly control other devices. Typical applications could be gas solenoid valves boiler shut down interfaces or similar. When switching external loads it is important to consider the nature of the load being switched. For inductive loads suitable protection from induced back EMF must be fitted. Many modern devices conforming to the European EMC Directive may already have devices fitted as part of their design to limit in-rush currents and back EMF. Where these are not fitted the following two diagrams provide guidance. Failure to observe this may result in damage to the detector node.
