Elcometer 456 Model E - Page 16

Symbol / icon Model
Description
EIV
BST
Elcometer index value; Used to assess a coating’s
overall quality. Ideal for use in the automotive refinishing
industry. USA patent number US7606671.
NDFT
ST
Nominal dry film thickness;
The target or specified dry
film coating thickness value.
IMO PSPC
ST
International Maritime Organisation’s Performance
Standard for Protective Coatings clearly defines
the
acceptance criteria for a coating. The Elcometer
456
can be quickly set up to display these parameters:
% > N
ST
The percentage of readings greater than or equal to
the
Nominal Dry Film Thickness Value.
90
%
100
ST
The percentage of readings between 0.9 x NDFT and
the NDFT.
90:10
ST
Displays either pass (ü) or fail (X)
To pass the IMO PSPC 90/10 rule:
Ÿ At least 90% of all dry film thickness readings shall
be greater than or equal to the NDFT value, and
Ÿ none of the remaining measurements shall be
below
0.9 x NDFT
X!
ST
If all the measurements taken at any point are greater
than 0.9 x NDFT, but less than 90% of the readings
are
greater than or equal to the NDFT, were the
inspection
to stop, then the IMO PSPC condition would be a
fail.
Statistically, however, were more measurements to
be
taken which were all greater than or equal to the NDFT
,
then there would come a time when the IMO
PSPC
condition returns to a pass. This is depicted by
the
“failing” icon - X!. For more information on the
IMO
PSPC see About IMO PSPC on page 74.
ST
Low Limit
ST
High Limit
ST
Number of readings below the low limit
ST
Number of readings above the high limit
User definable warning limits can be set. Once
the
reading exceeds the limit the gauge notifies the user
by
turning the reading and relevant limit icon red,
flashing
the red LED, and sounding the alarm beep. For
more
information see Limits on page 23.
www.elcometer.com
15
en
R
n
n
456 Dry Film Thickness Gauge
16 of 89For more information / 1300 287 935
mail@burwell.com.au / www.burwell.com.au