Maintenance; Recalibration - LUDLUM MODEL 3 Technical Manual

Technical Manual
Ludlum Measurements, Inc.
the knee or start of the plateau. This provides the most stable operating
point for the detector.
Note:
Measure If more than one detector is to be used with the
instrument and the opening voltages are different, the HV will
have to be readjusted for each detector substitution.

Maintenance

Instrument maintenance consists of keeping the instrument clean and
periodically checking the batteries and the calibration. The Model 3
instrument may be cleaned with a damp cloth (using only water as the
wetting agent). Do not immerse instrument in any liquid. Observe the
following precautions when cleaning:
1. Turn the instrument
2. Allow the instrument to sit for one minute before accessing
internal components.

Recalibration

Recalibration should be accomplished after maintenance or adjustments
have been performed on the instrument. Recalibration is not normally
required following instrument cleaning, battery replacement, or detector
cable replacement.
Page 6-5
Section 6
and remove the batteries.
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April 2016