Heath Consultants Sure-Lock All Pro - Manual (Page 27)

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1. INSTRUCTIONS FOR SINGLE COUPLER CLAMP USE: Before using
the coupler clamp, refer to the coupler clamp applications section which
a. Plug the coupler clamp into the appropriate output jack on the transmit-
ter. Each accessory is color coded and corresponds with its appropri-
ate color coded input jack on the transmitter. Model 91 for 8.1K color
coded yellow/blue, model 58 for 81K color coded white/blue.
c. Attach the coupler clamp around the conductor to be traced making
sure the “jaws” of the clamp are fully closed. The contact points of the
coupler clamp must not touch the conductor.
d. Turn on the receiver and begin the search allowing the receiver to
guide you to the conductor per instructions under Using the Sure-Lock
Receiver, page 26.
2. USING DUAL COUPLER CLAMPS: This method of operation is espe-
cially useful for energizing and identifying a conductor running with other
conductors, i.e., manhole-to-manhole traces, manhole-to-cable vault, etc.
To utilize this method, two coupler clamps are necessary and direct access
is required at both the transmitter and receiver locations.
transmitter and turn the transmitter on.
c. Plug the second coupler clamp into the “ACCESS” jack located on the
front of the receiver and turn the receiver on.
d. Now begin to search for the energized conductor by attaching the
coupler clamp around the conductor(s) in question and observe the SPI
readings on the display. The conductor showing the highest SPI will be
the conductor being energized by the transmitter at the other end of the
locate run.
Typical application instructions and diagrams for using the coupler clamps mod-
els 91 and 58:
The coupler clamp is a unique tool that generally enhances the separation of the
signal as compared to conventional methods of energizing the trace conductor.
The coupler clamp is also an effective method of isolating a conductor from
interfering conductors in the area of search. It CANNOT be used on all tracing
applications. Since there is no grounding device in use with the coupler clamp,
the signal must be able to travel in both directions on the conductor. If the trace
point of attachment, the coupler clamp may not function. This “break” in the
continuity of the conductor creates an opening in the conductor loop that will not