Gas detector to the rescue

The Swedish Coastguard service has selected a Crowcon flameproof (Exd) infra-red Nimbus fixed gas detector and Gasmaster control panel to be installed in one of its newly constructed hovercrafts.

If the Nimbus detector registers dangerous levels of petrol vapour, ventilation and alarm systems are automatically triggered by the Gasmaster control panel. In addition to this, a local external status light shows if the unit is in normal function or in fault.

The rugged detector is designed to operate in the dirtiest, harshest conditions. The optics will operate at up to 90% obscuration, and at 75% obscuration a 'dirty optics' warning appears on the Gasmaster control panel, informing operators that the optics need cleaning. A duct mounting plate is available, incorporating a remote gassing port, which allows calibration checking without requiring entry into the duct.