Extech Instruments CLT600, User Manual

Page: 19 / 30

Applications 6
6.3 Other Applications
6.3.1 Tracing an Underground Circuit
WARNING
The circuit under test must not be live.
Figure 6.5 Tracing Underground Circuits
1. Connect the Transmitter’s positive (+) terminal as shown in the diagram.
2. The Transmitter’s
COM terminal must be correctly connected to earth
ground. When working outdoors, you can use the supplied ground spike
for an earth ground connection.
3. Use the Auto Detect mode of the Receiver to locate and trace the circuit.
4. The distance between the earth wire and the circuit to be located must be
as wide as possible, otherwise the earth connection may interfere with the
detection of the circuit line.
6.3.2 Detecting Faults in a Floor Heating System
Refer to the application image in Figure 6.1 earlier in this manual for a visual
example.
1. Connect the red, positive ( + ) terminal to a single conductor.
2. Connect the black ( COM ) terminal to earth ground. When working out-
doors, you can use the supplied ground spike for an earth ground
connection.
3. If there are additional conductors in the same conduit or cable, they will al-
so have to be connected to earth ground.
4. The Receiver can now detect a broken wire location.
#NAS100035; r. AA/71038/71038; en-US 15