65.3
27dB
640Hz
1.
2.
3.
4.
5.
6.
7.
8.
Insert the activated sonde into the pipeline. In the case of an inspection camera, switch on the
sonde using the control unit's appropriate controls. Push the sonde or camera head about 10
to 12 feet (3 to 4m) into the pipe.
Switch on the vLoc3-Cam and use long presses on the
Return button
to enter the sonde
mode.
Press the
f
key to select the sonde frequency that matches the sonde or camera sonde.
Hold the locator vertically and stationary with the tip on the ground.
If the locator is within the range of the sonde the screen similar to the below will appear, the
arrow will be pointing in a particular direction and will be still and steady. The bar graphs on
either side of the screen are identical and indicate the sonde's signal strength. Use the + and
– keys to alter the receiver gain to keep the signal within the bar graph's limits.
If the bar graph is not steady it will most likely be because the sonde is not within range. Hold
the locator at approximately 45 degrees to the ground and rotate the locator around a full 360
degrees around you.
Note the direction of the strongest signal and walk toward it until the arrow is steady and the
bar graph shows a steady signal.
Walk slowly in the direction of the arrow.
A double circle will appear on the screen. This indicates the position of a null signal. Walk
toward it and position it over the cross hairs of the screen. Now rotate the locator so that the
arrow is pointing forward.
A Sonde is a transmitting coil that transmits three distinct peaks. The main peak with two smaller
peaks on each side. A null is seen between each smaller peak and the main peak. The sonde
position will always be located under the center of the main peak.
The vLoc3 series receivers detect the presence of the two null signals and the main peak
position. It uses this information to provide a reliable and efficient method of sonde location.
Method
88.1
32dB
32.8kHz
4’1’’
™
Page 3
3’8’’
