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9.3 Notes
1. For optimum accuracy, the altitude or pressure should be set before
calibrating or taking measurements.
2. When the altitude or atmospheric pressure correction system is
switched off, the
WP-91
assumes sea level (0m) and 1013 HPa
conditions. These values are satisfactory for the precision required
for most Dissolved Oxygen measurements.
3. If Altitude correction is switched on, an “
A
” is added to the
WP-91
display in normal measurement mode.
4. If Atmospheric Pressure correction is switched on, a “
P
” is added to
the
5.
WP-91
display in normal measurement mode.
6. % Saturation and % Gaseous readings are normalised to sea level
(0m) and 1013HPa, when altitude or atmospheric pressure
compensation is in use.
7. ppM and salinity-corrected ppM modes show the actual oxygen
present at the user-set altitude or atmospheric pressure.