Nova-Tech pH-Dissolved Oxygen Meter - Manual (Page 20)

39 38
pH mode—P4.0: Resetting to factory default settings
This program lets you reset all pH parameters to factory default settings. This
clears all calibration data any other pH setup functions you might have changed.
The following settings will remain as you have set them:
• Temperature unit of measure (°C or °F)
• The temperature offset calibration value
• All dissolved oxygen calibration data and parameters including the LCD contrast
setting
8.5
Notes:
To reset all % saturation data, see page 46.
To reset all mg/l (ppm) data, see page 55.
See page 68 for a table of factory default settings.
pH
SETUP
A
MEAS SETUP
pH
MEAS SETUP
pH
B
From measurement mode:
1. Press the MODE key to select pH
measurement mode.
2. Press SETUP key to enter SETUP mode.
3. Press the ▲ and ▼ keys to scroll through
subgroups until you view parameter P4.0
in the lower display.
See figure
4. Press the ENTER key.
See figure
5. Press the ▲ and ▼ keys to toggle
between NO and YES.
• NO retains current settings
• YES resets to factory default settings
6. Press the ENTER key to confirm
selection and to return to measurement
mode.
A
B
% saturation mode—P1.0: Dissolved Oxygen Parameters
This sub group lets you adjust the barometric pressure
Pressure adjustment mode
Barometric pressure is vital to correct dissolved oxygen measurements. You need to
enter the correct barometric pressure of the area you are measuring. This mode lets you
perform two functions:
• Select either mm Hg or Pascal barometric pressure units
• Adjust the barometric pressure. See Appendix 2 on page 67 for a “Pressure vs
Altitude” table.
8.6
From measurement mode:
1. Press the MODE key to select %
saturation mode.
2. Press the SETUP key to enter SETUP
mode.
3. Press the ▲ and ▼ keys to scroll through
subgroups until you view parameter P1.0
in the lower display.
See figure
4. Press the ENTER key twice. The upper
display shows either Hg or PA and the
lower display shows bAr.
5. Press the ▲ and ▼ keys to toggle between
mm Hg and Pascal units.
See figure
6. Press the ENTER key to confirm selection
and move to the next screen. The upper
display shows the barometric pressure and
the lower display shows the units selected
in step 5.
See figure
7. Press the ▲ and ▼ keys to adjust
the barometric pressure. The pressure
adjustment range is 500 to 1499 mm Hg
(66.6 to 199.9 kPa).
8. Press the ENTER key to confirm
selection and move to step 3 on page 40.
If instead you want to return to measure-
ment mode, press CAL/MEAS twice.
SETUP
SETUP
SETUP
A
A
B
B
SETUP
C
C
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