Ludlum Measurements 239605, Manual

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Model 3-IS & 3-IS-1 Technical Manual
Section 2
Ludlum Measurements, Inc. Page 2-3 October 2010
Note the (+) and (-) marks inside the battery door. Match the battery
polarity to these marks. Close the battery box lid, push down and turn the
quarter-turn thumb screw clockwise ¼ turn.
Note:
The center post of a “D” size battery is positive.
Connecting a Detector to the Instrument
(Model 3-IS only)
Caution!
The detector operating voltage (
HV
) is supplied to the detector via
the detector input connector. A mild electric shock may occur if
you make contact with the center pin of the input connector.
Switch the Model 3-IS range selector switch to the
OFF
position
before connecting or disconnecting the cable or detector.
Warning – A special cable(Part Number 8303-764 (-xx), where xx
represents a length in feet) is supplied with the Model 3-IS . If
replacement is needed, ensure that the same type is used.
This
cable is identified by type “C” connectors with locking screws and a
light-blue molded-rubber strain relief. Cable part number is 8303-
764(-xx), where “xx” represents a length in feet. Cable lengths are
available up to 37 feet.
Connect one end of the supplied detector cable to the detector by firmly
pushing the connectors together while twisting clockwise ¼ turn. Secure the
lock screws with an Allen wrench. Repeat the process in the same manner
with the other end of the cable and the instrument.
Battery Test
Check the batteries daily or prior to use, whichever is less frequent, to assure
proper operation of the instrument. Move the range switch to the
BAT
position. Ensure that the meter needle deflects to the battery check