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3.
INSTALLATION
3.1
Sensor Head
The angle and height of mounting determine the monitored width.
The example shown on the chart is for
a sensor mounted 0.8m above the
transit path at an angle of 30°. This
provides a maximum monitored width
of 1.3m which would be suitable for
most coal conveyors. The minimum
recommended angle is 30°. Should the
most practical mounting height (e.g.
1m) produce a wider view field than the
conveyor this is perfectly acceptable,
so long as the "overlap" on each side is
not so large that external hot targets,
such as vehicles on an adjacent
roadway, are within the units view.
3.2
Controller Cable
The Type 5010 Sensors are fitted with a 20mm gland as standard, which is suitable for the
flexible screened / shielded cable provided.
If the Controller is being mounted at a location "remote" from the Sensor, armored cable or
conduit may be employed, however this should terminate at an adjacent junction box. The
flexible controller cable should connect the Sensor to this JB in order to permit adjustments
to Sensor alignment. Any interposing cable must maintain the screen / shield connection.
On sites defined as "Hazardous Areas" it may be a requirement that all cables are installed
in conduit. In this case it is recommended that a short length of approved flexible conduit is
fitted between the Sensor Head and an adjacent junction box. The Sensor gland should be
replaced with an appropriate flexible conduit coupler which must be sealed with a suitable
conduit sealant, such as silicone rubber, in order to maintain the Purge Air pressure within
the enclosure.
Cable terminations at both Sensor and Controller are made at plug-in screw terminal
connectors with reference to Fig.6 in section 2.6.
This activity at the Sensor Head may be assisted by removal of the inner sensor module.
When re-fitting the Sensor lid it is essential that the air switch "pressure" tube is inserted
into the air inlet spigot such that the tube end lies in the input hose.
Refer to section 4.4 for further detail on air switch tube and sensor module removal.
Series 5000 - Manual 5010 / 5020
Monitored Width
D1125 - Issue 2 - 1 December 2009
Fig. 8
X
Angle
4.0
3.5
3.0
2.5
2.0
1.5
1.3
1.0
0.5
0.8
0.5
0.6
0.7
Sensor Mounting Height - m
Patol Limited
Height
°
Plane Of Conveyor
55°
45°
30°
0.9
1.0
1.1
1.2
1.3
1.4
Fig. 9
Page 10 of 15
1.5
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