TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Web:www.grewin-tech.com Wh86-13072088960
Email:[email protected]
TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Address:
2# MeiNian Plaza No.16 DongTing Road,Hexi Distr,300222,Tianjin China
.
21
Three frequency output power corresponding percentage
Level
33KHz
83KHz
65KHz
Notes
0
0%
0%
0%
65KHZ: 7
levels;
33KHz&83KHz:
9 levels
1
10%
10%
10%
2
20%
20%
25%
3
30%
30%
40%
4
40%
40%
55%
5
50%
50%
70%
6
60%
60%
85%
7
70%
70%
100%
8
85%
85%
—
9
100%
100%
—
2 Transmitter check:
To check the battery power: turn on the transmitter and observe the monitor battery
power indicator light; if the battery voltage indicator is less than 11V, you need to fully
charge the battery before use.
3. Depth function check:
Select an area without any metal structure and other lines being detected, place an
insulated cable or wire longer than 20 meters on the ground, connect it to the ground bar
or directly to the ground. Connect the other end to the red wire (black wire to the ground)
and insert the output cable into the transmitter's output jack. Turn on the transmitter,
adjust the output signal, then put the receiver on the long wire with a known height to
measure the depth. The receiver is placed vertically above the middle position of long wire,
that is to say, 10 meters away from the transmitter. The depth is measured at different
heights and the results are compared to the known heights to calibrate the depth. (Note: if
there is a metal object nearby, it will affect the accuracy).
VI. Ways of Pipe locating:
1. Applying signal
Underground pipeline detector field source has two kinds: passive and active source. The
passive mode is used to search for an unknown power cable or an underground pipe to
which a cathodic protection signal is applied and a metal line that is capable of sensing a
radio frequency in a zone. The active mode of operation is used to track and locate the
pipeline signals in the area.