Mastech MS6818 - Locating Metal Water and Heating Pipes

Operating instructions for Cable Detector, article 37270766
Page 20 of 34
5.1.7 Locating metal water and heating pipes
Requirements:
 The pipe must be of metal (e.g. galvanized steel pipe).
 The pipeline must not be grounded. There should be relatively high resistance between pipe and floor
(otherwise the search range will be very small).
 Use a wire to connect the grounding plug on the transmitter to ground.
 Use a wire to connect the “+” plug on the transmitter with the pipeline under test.
Locating water and heating pipes is shown in Fig. 3-1-7a and Fig. 3-1-7b
For reasons of safety the power supply to electrical
components must be switched off.
1. The end of the transmitter ground conductor should be at a certain distance from the pipeline under test.
If the distance is too small, the signal and the circuit cannot be precisely located.
2. Adjust the transmitter power to suit the different search radii.
3. The stronger the signals shown on the receiver display, the closer the pipeline is.
4. Set the receiver to manual mode and set the right sensitivity to precisely locate the pipeline.
5. To find a pipeline made of non-conductive material, we recommend inserting a metallic wire into the
pipeline as described in 5.1.6.