Elcometer 506 Guia Del Usuario página 8

6 PERFORMING THE TEST (continued)
6.2 USING 14.2mm DOLLIES - ANALOGUE PRESSURE GAUGE
Follow the procedure outlined in Section 6.1 then multiply the 20mm
scale pressure reading by 2.
10MPa on 20mm Scale = 20MPa for a 14.2mm dolly
1000psi on 20mm Scale = 2000psi for a 14.2mm dolly
6.3 USING 14.2mm, 20mm OR 50mm DOLLIES -
DIGITAL PRESSURE GAUGE
1 Select the measurement units; MPA or
PSI, see Section 9.3 on page en-10.
2 Select the dolly size, see Section 9.4
on page en-10.
3 Hold the gauge steady with one hand
and turn the crank handle clockwise
slowly and evenly to apply an
increasing force to the dolly and hence
stress to the coating.
The rate at which the force is applied

(the speed of rotation of the crank handle)
should be in accordance with the relevant
Standard.
Continue until either;
(a) the coating fails and the dolly is removed from the surface
(destructive testing) or;
(b) the minimum specified pressure value is reached
(non-destructive testing)
4 Record the pressure indicated on the display (a) and unwind the
crank handle and coarse adjustment screw.
Do not exceed the maximum pressure as overloading could damage the gauge.
Note: Dollies can be reused after cleaning until either the top of the dolly where it is
held in position by the quick connect coupling is severely deformed or the dolly
surface is no longer flat. Additional dollies are available from Elcometer or your
local supplier - see Section 11.1 on page en-11 for details.
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