Patol Limited
2.
EQUIPMENT DETAIL
2.1 General
Description
The 5000 Series system described here comprises two primary elements :-
Detector unit - Type 5610
Compressed Air Supply
The Detector is located above the materials transit path (e.g. conveyor) by means of the
adjustable mounting bracket and aligned such that the monitored hazard passes through
the unit’s field of view. The height and angle of the sensor determine the width of the
monitored path.
The Type 5610 Detector case is equipped with a 10mm hose fitting for connection of a
compressed air supply. This is required such that a positive air pressure is maintained
around the unit’s sensor “windows”.
There is a continuous air flow from the optical path visor which stops dust settling on the
sensor ‘glazed’ optical aperture.
The air purging is essential in dusty environments such as coal conveyors, and is
recommended in even relatively clean applications.
The unit may be user selected to either of two principal operating settings which are
referenced as :-
“Relay Mode” - Operation from a 20 to 30 Vdc supply.
“Low Power Mode” - Operation from a fire alarm trigger circuit / addressable loop.
A description of these arrangements is provided in sections 2.2 and 2.3 following.
MONITORED MATERIALS
SENSOR
COMPRESSED
AIR HOSE
SIGNAL/SUPPLY CABLE
1 to 1.5 m
0 to 55
o
o
AIR SUPPLY
Fig. 2
Page 4 of 16
D1198 - Issue 1 - 25 September 2013
Series 5000 - Manual 5610