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Chapter 1
This Hydro-Probe/Hydro-Probe XT Installation Guide is only valid for model numbers
HP04 onwards and HPXT02 onwards. User guides for earlier Hydro-Probe model
numbers are available from www.hydronix.com
1 General to All Applications
Follow the advice below for good sensor positioning:
The 'sensing area' of the sensor (ceramic faceplate) should always be positioned in the
•
moving, smooth, stream of material.
•
The sensor should not obstruct the material flow.
•
Position the sensor so that it is easily accessible for routine maintenance.
To prevent damage from excessive vibration, position the sensor as far as reasonably
•
practical from vibrators.
•
To reduce material sticking to the sensor it should be angled with the ceramic faceplate
initially set to 60° to the flow (as shown below). This is indicated on the label when the A
or B line is in line with the material flow.
It is recommended to install a switch close to the sampling point to manually start sensor
•
averaging for calibration purposes. (see Electrical Installation Guide HD0678 for
connection details)
A calibration sample point must be available as close to the sensor as possible (no more
•
than 150mm downstream)
Flow of material in
Bin/Silo/Hopper
When filling a bin/silo/hopper using large aggregates (>12mm), the ceramic faceplate is
susceptible to damage by direct or indirect impact. To prevent this, a deflection plate should be
fitted above the sensor.
12
Hydro-Probe Installation Guide HD0675 Rev 1.5.0
0
60
Line A
Figure 2: Hydro-Probe mounting angle and material flow
Figure 3: Fitting a Deflection Plate to prevent damage
Hydro-Probe Installation
Material flow
Deflection
plate
Approx.
1m
Line B
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