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pH Setup:
Set Default Temperature
XL15, 20, 25, 50 and 60 meters
Set pH Stability Criteria
This setup screen allows you to determine how quickly the meter will respond to electrode drift.
There are 3 speed settings: fast, medium and slow
To set pH Stability Criteria
1. Touch
FAST, MEDIUM, SLOW
to choose the desired stability criteria.
Set Default Temperature
It is a well known fact that pH is a temperature dependent measurement. The factory default
setting is 25°C. If you are taking the pH of a solution that is not 25°C and you are not using an
Automatic Temperature Compensation (ATC) probe, then you should enter the temperature value
of that solution in order to get the correct pH value. The current default temperature setting will be
displayed on the screen.
The default temperature can be set from -5°C to 105°C.
To set Default Temperature
1. Select temperature units by touching the appropriate unit button:
C
(Celsius),
F
(Fahrenheit) or
K
(Kelvin)
2. Touch the
Default Temperature
box and use the numeric keypad to enter the desired
default temperature (-5°C to 105°C).
3. Press
Enter
in the keypad to return to pH (pH FET) Setup screen
Stability criteria are more stringent at the slower setting. Therefore, if the highest precision
is required, then a slow setting would be desired. The default setting is the FAST and this
should be adequate for the majority of applications without making any changes.
The use of an ATC probe provides a measured temperature value to the meter and will
override any value entered in the default temperature screen. This measured value will be
used by the meter to make pH calculations.
Summary of Contents for XL 20
Page 1: ......
Page 138: ...127 Ion Operation Known Addition Method XL25 50 and 60 meters...
Page 140: ...129 Ion Operation Known Subtraction Method XL25 50 and 60 meters...
Page 142: ...131 Ion Operation Analate Addition Method XL25 50 and 60 meters...
Page 144: ...133 Ion Operation Analate Subtraction Method XL25 50 and 60 meters...