Select Stats; Set Ndft - Elcometer 456 3 Operating Instructions Manual

6.4 SELECT STATS

Allows the user to chose which statistical values are
displayed. The default condition is all values except
PSPC readings (Figure 36).
Figure 36. Select stats menu
Use Up/Down softkeys to move cursor and SEL
softkey to select or deselect the statistical values.
Note: When PSPC readings is selected, no other
values can be selected and the SET NDFT screen
will be displayed automatically.
See "Set NDFT" on page 31 for further information
about PSPC and NDFT.

6.5 SET NDFT

The factory default value
(12.6 mils).
If you need to adjust this value, select 'SET NDFT',
use the Up/Down softkeys
and then press OK. If any readings have been
taken in immediate mode, a screen will be
displayed warning that the statistics will be cleared.
Press YES to continue (to change the NDFT value)
or NO to escape (and leave the value unchanged).
H
ABOUT PSPC READINGS
Your gauge is capable of displaying PSPC readings
according to the 90/10 rule as defined in the IMO
requirements.
To pass the 90/10 rule (Figure 37):
• At least 90% of all thickness measurements
shall be greater than or equal to NDFT, and
f. Default value from PSPC for Ballast Water Tanks
g. Nominal Dry Film Thickness
h. Performance Standard for Protective Coatings
i. International Maritime Organisation
f g
for NDFT is 320 µm
to adjust the value
R
i
31