Maintenance; Recalibration; Batteries - LUDLUM MODEL 19 Manual

Model 19 MICRO R METER
Ludlum Measurements, Inc.
Technical Manual
Depress the " " pushbutton switch. Ensure that the meter face
LAMP
illuminates when the switch is depressed. Proceed to use the instrument.

Maintenance

Instrument maintenance consists of keeping the instrument clean and
periodically checking the batteries and the calibration. The Model 19
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 off and remove the batteries.
2. Allow the instrument to sit for one minute before accessing
internal components.

Recalibration

Recalibration should be accomplished after any maintenance or adjustment
of any kind has been performed on the instrument. Battery replacements are
not considered maintenance and do not normally require instrument
recalibration.
Note:
Ludlum Measurements, Inc. recommends recalibration at
intervals no greater than one year. Check the appropriate
regulations to determine required recalibration intervals.
Ludlum Measurements offers a full-service repair and calibration
department. We not only repair and calibrate our own instruments but most
other manufacturers' instruments. Calibration procedures are available upon
request for customers who choose to calibrate their own instruments.

Batteries

The batteries should be removed any time the instrument is placed into
storage. Battery leakage may cause corrosion on the battery contacts, which
must be scraped off and/or washed using a paste solution made from
baking soda and water. Use a spanner wrench to unscrew the battery contact
Page 2-3
Section 2
February 2012