About Imo Pspc (St) - Elcometer 456 Model E Operating Instructions Manual

18 ABOUT IMO PSPC (ST)

The Elcometer 456 is capable of
d i s p l a y i n g P S P C r e a d i n g s
according to the 90/10 rule as
defined in the International
Maritime Organisation (IMO)
requirements.
To pass the 90/10 rule:
At least 90% of all thickness
measurements shall be greater
than or equal to the NDFT value
and;
N o n e o f t h e r e m a i n i n g
measurements shall be below 0.9
x NDFT.
While you are taking readings with PSPC selected, your gauge will advise
you whether the readings are passing or failing the rule:
When the PSPC statistics are in the passing state, the reading
Ÿ
value is white and the green LED flashes;
When the PSPC statistics are in the percent fail state, the reading
Ÿ
value is white and both the red and green LEDs flash;
When the PSPC statistics are in the reading fail state, the reading
Ÿ
value is red and the red LED flashes.
Note: The default value for NDFT is 320µm (12.6mils) - from PSPC for Ballast Water
Tanks.
Note: The 90/10 rule is not compatible with the counted average data collection method
(see Batching on page 26) and cannot be used when saving readings using this method.
www.elcometer.com
For more information / 1300 287 935
456 Dry Film Thickness Gauge
To PASS 90/10
At least 90% of
all readings must
be in this zone...
AND
0.9 x NDFT
COATING
... no readings
SUBSTRATE
must be in this
zone
75 of 89 mail@burwell.com.au
R
90/10 FAILED if
Less than 90% of
all readings are in
this zone...
NDFT
OR
... any readings
are in this zone
74
/ www.burwell.com.au