A120/130
I
10
pH Settings
The A series meter contains 7 pH settings and 10 general settings in
the setup menu.
Menu Items and Options
Sample ID
Set the sample ID to associate reading with the data log.
0000 to 9999
Default 0000
pH Buffer Group
Set the pH buffer group for calibration and auto-recognition.
USA
Default
NIST
DIN
Custom (any 2 to 5 values > 1 pH apart)
Calibration Points
Set the number of calibration points.
1 to 5 points
Default 3 points
Resolution
Set the resolution of the pH measurement.
0.001
Default
0.01
STC
Solution Temperature Coefficient is used to correct the pure water
samples with a conductivity of less than 30 µ S/cm. If enabled, the
readings will automatically reference to 25° C (77° F).
High purity water
Sample contained the ammonia or phosphate
Off
Default
Alarm Limits
Set the high and low limit values to activate alarm.
Enable (setting range: -2.00 to 20.00 pH)
Disable
Default
Calibration Due
Set the calibration interval to activate alarm.
Enable (setting range: 1 to 31 days)
Disable
Default
If you want to change the current settings, press and hold the
key
to enter the setup menu, press the
/
key to select an option or
set a value, press the
Enter
key to confirm.
•
During the setting process, press and hold the
/
key will
make the value change faster.
•
To exit the setting without saving changes, press the
ESC
key.
Temperature Compensation
For better accuracy, we recommend the use of either a sensor with a
built-in or a separate temperature probe. The meter will calculate the
pH slope with measured temperature and show the temperature
compensated readings.
Automatic Temperature Compensation
Connect the temperature probe to meter (refer to the
Connecting the
Temperature Probe
section on page 8).
The ATC icon appears on the screen, the meter is now switched to the
automatic temperature compensation mode.
Manual Temperature Compensation
If the meter does not detect a temperature probe, the degrees Celsius
icon (° C) will show on the screen indicating the meter is switched to
the manual temperature compensation mode. To set the temperature
value follow the steps below.
1. Press and hold the
° C
key to enter the temperature setting.
2. Press the
/
key to modify the temperature value.
3. Press the
Enter
key to save.
Press and hold the
/
key will make the value change faster.