Elcometer 138 Handbuch Seite 7

4 TEST PROCEDURE: US NAVY PPI 63101-000
8 Rub the surface of the patch gently for
10 to 15 seconds to allow the water to
dissolve surface contaminants.
9 Insert the syringe into the patch
through the spongy foam perimeter
and extract the solution from the
patch.
10 Measure the conductivity of the
solution using the Elcometer 138
Conductivity Meter, see Section
page en-11
into the sensor cell. Rinse the sensor
cell several times with the solution to
be measured before taking the
reading.
4.3 AFTER TEST
1 Record the temperature of the solution.
2 Remove the patch from the surface and clean the surface. If
required, any adhesive residue from the patch left on the test
surface can be removed by wiping with a cloth moistened with a
suitable solvent. Ensure that the solvent will not damage the
surface before use.
3 Rinse all components of the test kit, other than the patch, in fresh,
pure water. The components can then be used again.
4.4 PASS / FAIL CRITERIA
For immersed applications, conductivity due to soluble salts (total
ionic) shall not exceed 30µS/cm.
For non-immersed applications, conductivity due to soluble salts shall
not exceed 70µS/cm.
Note: The charts produced by the US Navy for the calculation of chloride levels are not
required for this test method. Please contact Elcometer or your local Elcometer
supplier if you require a copy of these charts.
www.elcometer.com
. Inject the sample directly
(continued)
5.6 on
R
en-6