Page 19
7.2 Changing the Altitude or Pressure Correction value
To change the altitude or atmospheric pressure correction value when
one or the other is switched on…
1. Switch the
WP-82Y
on.
2. Select Altitude or Pressure calibration, depending upon which is
switched on..
i.e. :
F1:Cal.
F4:Altitude
or :
F1:Cal.
F4:Pressure
3. The
WP-82Y
now asks for the altitude or pressure.
> 0< m Alt
:Set F1:Save
or:
>1013< HPa
:Set F1: Save
Press the
and
keys to set the desired Altitude or Pressure.
4. Press the
key to save the Altitude or Pressure value.
Alternatively, press the
key to quit and retain the current setting.
7.3 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-82Y
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-82Y
display in normal measurement mode.
4.
If Atmospheric Pressure correction is switched on, a “
P
” is added to
the
WP-82Y
display in normal measurement mode.
5. % Saturation and % Gaseous readings are normalised to sea level
(0m) and 1013 HPa, when altitude or atmospheric pressure
compensation is in use.
6. ppM and salinity-corrected ppM modes show the actual oxygen
present at the user-set altitude or atmospheric pressure.