Estimating the Depth of a Conductor··························································································15 Using the Carrying Handle for Blind Searching, Ground Surveys, and Metal Mass Location ···16 5.7.1 Mounting the VM-480B Transmitter and Receiver to the Carrying Handle···························16 5.7.2 Locating with the Handle-Mounted VM-480B·······································································17 5.7.3 Blind Search, Metal Mass Location, Ground Survey with the Carrying Handle····················18 Conductor Identification Using a Second 4820 Metroclamp·······················································18...
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6.13 Metroclamp Ground Requirements····························································································23 6.14 Grounding Safety·····················································································································23 6.15 Distribution Systems·················································································································23 Maintenance·············································································································································24 Checking and Replacing the VM-480B Transmitter and Receiver Batteries·······························24 Basic Preventive Maintenance···································································································24 Glossary ···················································································································································25 info@wctproducts.com | 13309 Beach Ave. Marina del Rey, CA 90292 wctproducts.com | Phone: 800-WCT-PROD (928-7763) | Fax: 310-306-9343...
General Safety & Care Information General Safety & Care Information Who Can Use This Equipment • This equipment must only be used by people suitably trained in the use of pipe and cable locators. Work-site Safety • Use your companies, or other applicable safety code and rules when using this equipment. •...
General Safety & Care Information IMPORTANT Remember – Batteries contain dangerous chemicals – They can be affected by many things such as water ingress or heat – In some circumstances they can explode. They also can cause electric shocks! Care of Equipment •...
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General Safety & Care Information EUROPE • Vivax-Metrotech confirms that the location system is compliant with relevant provision of European directive 1999/5/EC. • EN 55011 • EN 61000-4-2: A1 & A2 • EN 61000-4-3 • EN 61000-4-8: A1 info@wctproducts.com | 13309 Beach Ave. Marina del Rey, CA 90292 wctproducts.com | Phone: 800-WCT-PROD (928-7763) | Fax: 310-306-9343 Page 3 of 26...
Service & Support Service & Support Serial Number and Software Revision Number Always quote your receiver and transmitter model number, serial number and software revision number when requesting product support. They can be found as follows: (for reference only) NOTE The transmitter Model &...
Service & Support Distributors and Service Centers Closest to You: World Headquaters, United State of America China Vivax-Metrotech Corporation ALLFIND Ltd. 3251 Olcott Street, No. 780, Tianshan Rd, Santa Clara, CA 95054, USA Shanghai, China 200051 Website : www.vivax-metrotech.com T/Free : 4006-288-062 Sales &...
Depth measurement is accomplished using the triangulation method. The VM-480B is of split-box design, half being the transmitter and half being the receiver. The transmitter generates a signal which is applied onto the pipe or cable to be traced - referred to from now on as the "conductor".
Introduction Controls and Indicators of the Model VM-480B Transmitter VM-480B Transmitter: Controls and Indicators POWER INDICATOR LAMP Indicates power is on. Blinks steadily if battery power is good, will slow down according to power left in batteries. When it stops blinking, replace the batteries.
Introduction Controls and Indicators of the VM-480B Receiver VM-480B Receiver: Controls and Indicators FIELD STRENGTH METER The meter indicates the strength of the signal being received by the receiver. The reading will vary according to how close the receiver is to the conductor. The receiver displays the highest reading when it is directly over the target conductor.
Checkout Procedure Checkout Procedure To insure proper operation of the VM-480B Pipe and Cable Locator, use the checkout procedure at the following times: • Upon receiving the equipment • Before each job, preferably before you leave for the site •...
Follow the checkout procedure described in Section 4 before operating the equipment. To operate the VM-480B pipe and cable locator, use the transmitter to apply the signal to the conductor, and use the VM-480B receiver to trace the signal coming off the conductor.
Transmitter 1. With the transmitter OFF, plug the Direct Connect Cable into the jack labeled COND/AUX OUTPUT on the VM-480B transmitter. 2. Attach the RED lead of the Direct Connect Cable to an electrically clean metallic part of the targeted conductor.
5.2.3 Null Method To pinpoint the location of the conductor use the NULL method by holding the VM-480B receiver in a flat, horizontal position. The audio tone will increase and then go silent at the exact location of the conductor.
1. With the transmitter OFF, plug the 4820 Metroclamp cable into the COND/AUX jack on the VM-480B transmitter. 2. Place the Metroclamp around the conductor, below the electrical ground. Make sure that the clamp jaws are completely closed.
VM-480B 50/60Hz Power Line Locating When locating a power line the VM-480B transmitter is not required as you are locating the power line by tracking the path of the 50/60 current coming off the line (the line must be loaded).
Operation 5. Move the receiver from side to side over the targeted conductor location until you obtain the maximum PEAK response. For better signal reception, hold the receiver close to the ground. As you move closer to the targeted conductor, the speaker tone will gradually get louder. The loudest tone will indicate you are over the conductor in the PEAK mode.
See below graphic, Step 1. 3. Place the mounted transmitter on the ground as shown and attach the VM-480B receiver to the handle, screwing the two handle screws into the two threaded bushings on the receiver.
5.7.2 Locating with the Handle-Mounted VM-480B 1. Holding the handle-mounted VM-480B with the receiver face up and the transmitter on the back end, start traversing the area you need to blind search. 2. As you cross a conductor at right angles - the point of maximum audio and visual signal, make a mark on the ground.
A "blind search" is a search for the location of a conductor with an unknown source or ending. The VM-480B must be operated in the Inductive Mode using a systematic grid approach. Looking for a "metal mass", such as a manhole cover or steel drum is the same as a "blind search" with the exception that the search paths need to be closer together so as not to miss the metal object.
Operation Marking the Conductor The following color markings have been established by the American Public Works Association (APWA): Conductor Color Electric power lines, cables, or conduits Communication lines, cables, conduits, CATV Orange Gas, oil, petroleum, or other gaseous materials Yellow Storm and sanitary sewers, drain lines Green Water, irrigation, or slurry lines...
Verifying means to confirm that a conductor if present, and tracing means to map out its route along the ground. Besides its use for locating a cable, the VM-480B’s 50/60Hz power line locating mode is also helpful for determining the presence of energizing power lines and other conductors.
Tracing Factors and Helpful Information Deep Conductor Signals picked up by the receiver from deep buried pipes are weaker and not as directionally distinct as those from pipes closer to the surface. In addition, the meter reading will only change by small increments in relation to moving the receiver antenna.
6.12 Pipes with Insulated Junctions The high radio frequency signal of the VM-480B Pipe and Cable Locator will jump pipe insulators, however, the signal will proportionately decrease each time it crosses an insulator. When possible, such as when tracing a pipe with a meter, bypass the meter (insulator) by using a jumper cable.
Tracing Factors and Helpful Information 6.13 Metroclamp Ground Requirements If you are using the Metroclamp around a cable, both ends of the target conductor must be grounded to insure sufficient field strength. Power lines and telephone sheaths are assumed to be grounded.
Make sure the latch is securely fastened. Basic Preventive Maintenance The Model VM-480B is designed for rugged outdoor use, but rough handling should be avoided. Keep the equipment dry, clean, and free of grit. info@wctproducts.com | 13309 Beach Ave. Marina del Rey, CA 90292 wctproducts.com | Phone: 800-WCT-PROD (928-7763) | Fax: 310-306-9343...
Glossary Glossary Active Locate A locate where a transmitter is used to apply a signal to a buried pipe or cable, the position of which is then located by a receiver tuned to the same frequency. Active Signal A signal applied by the locator transmitter to a buried line. Typical this is a very precise frequency.
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Glossary Response The indication that the receiver gives which is caused by the signals it is receiving. This can be visual, audio or both. Typically it is displayed on the locators dot matrix display and audibly from a loudspeaker in the receiver housing.
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