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MEASUREMENT
12.4. ISE MEASUREMENT
To perform ion concentration measurements:
1. Connect an ISE electrode (not supplied) and the corresponding reference
(if necessary) to the instrument and turn it ON.
2. Press
RANGE
to enter ISE mode (until the display changes to ISE range).
3. Submerge the ISE electrode tip (4 cm/1½”) into the sample to be tested
and wait a few seconds for the reading to stabilize.
The ISE reading is displayed along with the current temperature reading.
Temperature compensation status is turned off because ppm readings are not temperature
compensated.
In order to take accurate ISE measurements, make sure that the appropriate ISE electrode type and
ISE unit are configured in SETUP menu and the instrument is calibrated (see ISE CALIBRATION section
for details).
Notes:
When the reading is out of range, the display will flash the closest full-scale value. The
instrument will display “
----
” on the primary LCD if it is not calibrated. A miniumum of one-point
calibration is required prior to taking any ISE measurements.
Changing the ISE electrode or the ion charge will need ISE range calibration.
12.5. TEMPERATURE MEASUREMENT
Connect the temperature connector to the appropriate socket. Immerse the pH electrode into the
sample and allow the reading, displayed on the secondary LCD, to stabilize.
Note:
The temperature can be displayed in Celsius (
°
C) or in Fahrenheit (
°
F) degrees (see
METER SETUP section for details).