Suparule Systems Ltd., Suparule House, Lonsdale Road,National Technology Park, Limerick, Ireland.
Tel: +353.61.201030
Instructions on the Safe use of Cable Height Meter
Theory of operation
•Sends (ultra) sound wave to target
•Measures time to echo
•Calculates distance, based on speed of sound
•Adjusts for air temperature
CHM Operation
1. Select: M(metric) or I (imperial)
2. Set the CAL mode switch to the WIRE position.
3. Press the ON key to power
4. Stand directly underneath the conductors(s) to be
measured.
5. Press the MEASURE Key to take measurement
6. Press the READ key to display each of the stored
wire height differences (Stored Measurements).
Do’s:
•Position the unit on the ground, directly underneath the conductor(s) to be measured.
•Align the unit in the direction of the conductor, with the cone pointing towards the conductor(s).
•The ultrasonic waves need to be sent and received in the cone, so alignment is important.
•Keep the unit dry; if it does get wet, leave it upside down in a warm area
•The unit will work in a humid environment; however, if water gets into the electronics, long-term
damage can occur.
Don’ts:
•Avoid clutter.
Too many branches/leaves could confuse the unit, as the ultrasonic waves will bounce back from
any obstacles. The software can eliminate a number of external interferences, but too many can
lead to erratic readings.
•Avoid water.
It can damage the electronics within the Cable Height Meter.
•Avoid sudden changes of temperature.
The Cable Height Meter takes into account temperature to measure the speed of sound traveling
in air. If there are sudden temperature changes, i.e. from a warm car in winter to cold icy ground,
leave the unit to adjust for a few minutes. The temperature will begin dropping on the display, and
will need to stabilise to get accurate, reliable readings.
When the measure key is pressed, the Cable Height Meter will first measure the height to the lowest
conductor, and then the spacing in between any additional conductors stacked above the first one,
provided they are all within the ultrasonic beam. It is not necessary to press the measure button for each
of the conductors above the first; all of the measurements are taken simultaneously.
To read the measurementstaken, press the read key. Each time the read key is pressed, the reading for
each wire is displayed, with the wire number indicated in the top-left corner of the display. An infinity
reading indicates either that that number wire is not present or is outside the range of the meter.
The measurements are held in the unit until the unit powers off (automatically, three minutes after the last
key-press).
