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Page
3
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CORROSION
MITIGATION
INSTRUMENTATION
P.
O.
B
OX
1667
S
AN
B
ERNARDINO
,
C
A
92402
T
EL
:
(909)
890-0700
F
AX
:
(909)
890-0736
P
RODUCT
I
NSTRUCTIONS
The protective coatings should be dry and free of all contamination prior to electrical holiday testing.
Proper curing and drying time of the protective coating must be established prior to conducting
electrical holiday testing.
Note
: Solvents retained in the protective coating film can cause erroneous indications (false
holidays) during electrical testing.
The dry film thickness should not exceed 20 mils when electrical holiday testing is done with the
low voltage Model M/1 Holiday Detector. Film thickness should be determined with a non-
destructive dry film thickness gauge to make sure limits are not exceeded.
Special Note: Ordinary tap water will generally suffice to dampen the sponge electrode,
provided the protective coating thickness does not exceed 10 mils. The factory
recommended practice is to use a wetting agent at all times, regardless of coating
thickness up to 20 mils. The low voltage holiday detector is not recommended for coatings
greater than 20 mils of thickness.
Check battery voltage. This can be done by shorting the wet sponge with the bare end of the ground
cable of the holiday detector. If a steady, level audible signal is heard, the battery voltage is OK.
If the audible signal starts to attenuate while testing, REPLACE battery. Note: A battery output
voltage drop of over 10% also indicates weak battery.
HOLIDAY DETECTOR ASSEMBLY
Assemble the Holiday Detector by first connecting the ground cable to the case. Insert the ground
cable banana jack into the 5-way binding post. Connect the Red wand handle cable to the other 5-
way binding post.
Attach the sponge bracket (aluminum piece), sponge, sponge holder (plastic piece) and the knob
with threaded bolt through all and screw down on the wand end. See Figure 1. Saturate the sponge
in a wetting solution.
NOTE ON SPONGE: The Model M/1 sponge is shipped in a dry and compressed state.
The sponge will grow larger and pliable when saturated with water.
Figure 1
