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.