Document 520/001 Rev 2.2 Dec 2013
Page 9 of 10
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ProH2O Water Leak Detection Application Guide
Frequently Asked Questions
1. What is the best way to secure the detection cable to a surface?
The leak detection cable should be firmly attached using selfadhesive Uclips or similar. These can be screwed
through to the floor to ensure the clip does not become loose. When using the detection cable on the floor it is
preferable to keep the detection cable in contact with the surface as much as possible. Any gaps between the
surface and the cable decreases the response time and increases the required amount of water needed to
trigger an alarm.
2. What is the best way to secure the detection cable to a pipe?
If the detection cable is run alongside a pipe it should be placed underneath the pipe and cable ties placed at a
maximum spacing of 150mm (6"). Ensure the surface contact between the pipe and detection cable is
maintained as much as possible along the cable length. Lagging further aids the ability of the cable to detect a
leak. Refer to page 4 for examples.
3. How can I check the integrity of the cable?
Each ProH2O System continuously monitors the cable for a fault anywhere along its length and emits a trouble
signal if a fault occurs. However the cable may be checked using a multimeter. Measuring the resistance
between the two outermost connectors at either end of the detection cable
without
an endofline plug attached
should read greater than 20Mohms. Dipping the cable in water should result in the resistance decreasing to less
than 5Mohms.
4. Can ProH2O leak detection cable be laid on metal surfaces?
Yes, the ProH2O detection cable is designed to maintain a gap between any metallic or conductive surface and
the sensor cores within the detection cable. Ensure no conductive parts can protrude through the braid and
touch a sensor core.
5. What is the best way to clean the detection cable?
The detection cable can be cleaned with a damp cloth or by washing the cable in water. Once cleaned the cable
will need to be dried before the ProH2O system can be used. Do not use solvent based cleaners on the cable.
6. How often should I check the detection cable?
The detection cable should be examined and tested at regular intervals and no greater than 12 months apart. At
each inspection the function of the cable should be check (see question 3 above) and clean if necessary.
