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Net Safety Monitoring
I
NTRODUCTION
The UV/IRS-H2 is a smart, stand-alone fire detector, combining sensors for
both the ultra-violet and infrared spectra. This detector was specially
designed to respond to radiation emitted by Hydrogen (H2) fires. The rugged
design is ideal for both indoor and outdoor applications.
The microcontroller monitors and analyzes each sensor to identify a variety
of flame conditions. Only when the defined detection criteria for both IR and
UV sensors indicate a fire condition will the detector alarm.
Spectral Sensitivity Range
The UV/IRS-H2 fire detector responds to UV radiation wavelengths of 185
to 260 nanometres (1850 to 2600 angstroms) and IR radiation in the 3.09
micron range. Note that UV radiation reaching the earth from the sun does
not extend into the sensitivity range of the detector, nor does radiation from
normal artificial lighting, such as fluorescent, mercury vapour and
incandescent lamps.
MAN-0101 Rev 01 UVIRS-H2-A/H2-AR & UVIRS-H2-A-X/H2-AR-X
November 23, 2012
Locate Detector
When positioning fire detectors, consider such factors as, distance from the
fire, type of fuel and temperature, as well as any environmental factors which
may influence the detector's response to radiation.
Typical applications and ignition sources
The UV/IRS-H2 was designed to detect Hydrogen (H2) based fires and
should be used in applications and environment related to Hydrogen.
Potential inhibitors
A potential inhibitor is anything located between the detector and a potential
fire source which could prevent the UV/IRS-H2 from detecting a fire or
reduce its sensitivity to fire. Possible inhibitors include but are not limited to
the following:
Solid objects such as machinery, glass or plexiglass between the detector
and potential fire source
Water, fog, rain, dirt or dust on the detector window or heavy smoke
between the detector and potential fire source
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