General Description - Crowcon Detective+ User Manual

Detective+ Section 2
I. General Description
The Crowcon Detective+ is a microprocessor controlled transportable gas
detector which is capable of monitoring up to four gas types simultaneously
and providing warning of hazardous levels. Using electrochemical, catalytic and
thermal conductivity sensors, the instrument may be configured to detect any
practical combination of oxygen, toxic and flammable gas. See Appendix 4 for
notes on sensor limitations.
The built in data logging facility records gas levels of all four channels at user
definable intervals for subsequent downloading to a computer. This enables a
more detailed evaluation of accumulated exposure to be made than is possible
with the Time Weighted Average exposure integrator, and may yield useful data
about gas leak patterns and can provide essential information to an incident
inquest.
The Detective+ unit is designed for temporary monitoring of working areas
where hazardous gases may be present. For small area monitoring, while per-
sonnel are working, a single unit can be used. For protecting larger areas a num-
ber of Detective+ units can be interconnected, providing a protective perimeter
around the work area. (See section 6 for details on how to link Detective+ units
together).
Presence of hazardous gas levels is indicated by three high intensity red light
beacons on the top of the unit and a high volume audible sounder on the
underside of the unit.
The main body of the unit is constructed from fire retardant, high impact, UV
stabilised ABS plastic and is protected against water and dust ingress to IP65.
The unit can be supplied with either a rugged steel tripod frame or a rigid com-
posite tripod frame with hinged legs for space-saving storage.
The sensors are located on the underside of the unit for protection, a manual
aspirator can be attached for spot sampling. A pump option for automatic
sampling is available. The sealed lead acid battery pack within the unit provides
for up to 36 hours of continuous operation including a 30 minute period in the
alarm mode.
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Detecting Gas Saving Lives