14
On the
HI 3221
enter the ISE mode by pressing
RANGE
until the display
changes to ISE.
Submerse the ISE electrode tip 3 cm (1¼”) into the
sample to be tested and wait for the reading to stabilize.
The ISE reading will be displayed along with the current
temperature reading.
The
“ATC”
(or
“MTC”
) message 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 were set in SETUP menu (
HI 3222
only), or the
proper ion charge and slope is set (
HI 3221
only), and the instrument was
calibrated (see ISE CALIBRATION for details, page 25).
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. Perform at least a single-point calibration in order to
take ISE measurements.
• Changing the selection in the SETUP menu for the ISE electrode or
the ion charge will require calibration.
TEMPERATURE MEASUREMENTS
Connect the
HI 7662-T
temperature probe to the appropriate socket. Immerse
the temperature probe into the sample and allow the reading on the secondary
LCD to stabilize.
Note
: The temperature can be displayed in Celsius degrees (ºC) or in Fahrenheit
degrees (ºF) (see SETUP for details, page 31).
BACKLIGHT FEATURE
The instrument is provided with a Backlight feature. The Backlight levels can
be selected in the SETUP menu.
3 cm