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Larg e Mass Indica tor
The Large Mass Indicator will light any time the
instrument reads it is over a large mass of metal.
Large masses of metal would generally include
manhole covers, valve lids, valve risers, vault lids,
etc.
Note: The deeper the large mass, the less likely it is to be
indicated as a large mass on the display (eg. A manhole cover
at three feet deep can easily be located, but will not be
indicated as a large mass. A manhole cover at three feet will
read very similar to a silver dollar buried six inches deep.
5.
Turn off the 7200
To turn off the 7200 simply double click the trigger.
Also, the 7200 will shut off automatically after five
minutes of inactivity to preserve battery life.
6.
Chang ing the Ba tteries
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When the ON/Battery light flashes during operation,
the batteries must be replaced with new ones.
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Place the 7200, in extended position, on the floor.
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Place the heel of your palm on the top end of the
chassis, and grasp the ledge of the handle cavity in
the battery cover with your fingertips.
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Pull up on the cavity ledge with your fingertips. The
spring-loaded cover will “pop” out of the chassis.
Fully remove the cover.
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Remove the batteries from both the cover and the
chassis. Replace them according to the polarity
markings molded into each part. The 7200 uses eight
“AA” size, 1.5V alkaline batteries.
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Replace the cover as it was before, inserting the tab
first. Seat the battery cover completely by pressing
down the lower corners of the cover with your
thumbs. The cover will “pop” into place when it is
properly installed.
-
Activate the instrument to make sure that the
batteries are properly installed and making good
contact.
7.
Testing the 7200
You should have received two metallic discs with your
locator. One of which is ferrous and the other is
composed of non-ferrous metal.
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Place both discs on the ground (free of other metals
or piping) two to three feet apart.
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Start in motion mode to locate both discs.
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Switch to pinpoint mode – as you pass over the discs,
one will light only the metal side of the display while
the other disc will light the metal and iron sides of
the display.
7.
8.
