Vivax Metrotech vLocDM, Руководство пользователя

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9.1 Cleaning
Cleaning can be done with a cloth dampened with warm soapy water. Do not use scouring pads on the casing or
display surfaces as this will scratch the device. Do not submerge or pour water over the receiver or transmitter.
Always dry the equipment before storing.
9.2 Checking Functionality
The vLocDM system can be checked using a simple test procedure. It requires an area clear of pipes and cables
and free from metallic structures such as metal tanks, metal railings and reinforced concrete.
A 40m square loop of wire needs to be set out on the ground with a non metallic structure placed at 1m above
the cable and at the mid point of one of the straight sections. See diagram below.
40m
Insulated Cable
1m
Black (green)
Cable
Red (white)
Cable
Care and Maintenance
9 Care and Maintenance
Method:
1. Set the transmitter to 128Hz (98Hz if in a 60Hz environment)/3Hz/6Hz. Set the current to 100mA.
2. Set the locator to receive 128Hz (or 98Hz). Position the locator on the non-metallic structure and carefully
align so that it is above and in line with the cable. Set the gain of the locator to read approximately 50%.
Check that the line indicator is pointing “North/South”, if it is not there could be an interfering signal or you
may be too near to a bend of the loop.
3. Hold the locator very still and press the “i” pushbutton. After a few seconds, a result will be displayed on the
instrument.
4. Check that the arrow is pointing back towards the white connection lead.
5. Check the vLocDM current reading is 100mA +/-10mA (10%).
6. Check the depth is 1m +/- 7cm.
7. Repeat for each of the current settings of the transmitter.
8. Successful completion of these tests confirms that both the receiver and transmitter are functional.