Elcometer 108 User Guide

6 PERFORMING THE TEST
2 Record the pressure indicated on the display and unwind the
handle.
(b) the minimum specified pressure value is reached
(non-destructive testing).
The operating range of the Elcometer 108 is 2 to 18MPa (290 to 2600psi).
DO NOT exceed the operating range as overloading could damage
the gauge.
1 Hold the gauge steady with one hand and turn the handle
clockwise slowly and evenly to apply an increasing force to the
dolly and hence stress to the coating.
Continue until either;
(a) the coating fails and the dolly is removed from the surface
(destructive testing) or;
Note: The oil inside the Elcometer 108 is incompressible and therefore any leakage
due to catastrophic failure of the gauge will result in an almost instantaneous
drop in pressure to atmospheric level.
4 The rate at which the force is applied (the speed of rotation of the handle)
should be in accordance with the relevant Standard.
Note: Dollies can be reused after cleaning until either the top of the dolly is severely
deformed or the dolly surface is no longer flat, see Section 8.2 ‘Cleaning the
Dolly’ on page en-7. Additional dollies are available from Elcometer or your
local supplier - see Section 10 ‘Spares & Accessories’ on page en-9 for details.
www.elcometer.com
en-6
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7 ASSESSING THE RESULTS - DESTRUCTIVE TESTING
Once pulled from the surface, examine the bottom of the dolly to
assess the results.
b) Partial Failure: In some cases, the coating
will cover only part of the dolly face. A partial
adhesion / coating failure should be recorded
if the coating covers more than 50% of the
dolly face.
Cohesive Failure: When the coating fails in
the body of the coating layer leaving some
coating on the surface and some coating on
the dolly face.
a) Successful Test: In most cases the coating
will fully adhere to the dolly and the test can
be claimed as 100% valid.
a)
b)

Elcometer 108 Specifications

General

Brand	Elcometer
Model	108
Category	Test Equipment
Language	English