Test Procedure: Us Navy Ppi 63101-000 - Elcometer 138 User Manual

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4 TEST PROCEDURE US NAVY PPI
4.1 BEFORE YOU START
1 If using the Elcometer 138 Bresle Salt Meter, press the MEAS button to set the measurement mode
to ISO.
The US Navy PPI 63101-000 pass / fail criteria is based on the conductivity of the test sample. The Elcometer 138
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Bresle Salt Meter measures the conductivity of the sample but displays the surface density of salts. The measured
conductivity is converted to surface density of salts using the ISO Salt Mix or IMO PSPC equivalent NaCI conversion
factors, dependent on the measurement mode selected. See Section 4.4 on page en-9 for an explanation of how to use
the displayed surface density of salts reading to calculate the conductivity of the test sample.
2 Calibrate the Elcometer 138 Meter, see Appendix A Section A5 on page en-19.
3 As the test is extremely sensitive, clean latex or nitrile gloves should be worn during the extraction of
soluble salts to prevent contamination of the surface.
4.2 TEST PROCEDURE
Measurements are to be made randomly over the prepared surface. Five measurements should be taken
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every 90m (1000ft ). Five measurements should be taken for areas less than 90m (1000ft ).
1 Remove the printed protective backing and foam centre from the Bresle patch.
2 Apply the patch to the surface pressing firmly around the perimeter of the patch to ensure a
complete seal. If using the Elcometer 135C Bresle Test Patch, remove the clear protective film cover
using the orange tab.
3 Fill a syringe with 3ml of pure water.
en-7
: 63101-000
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