15
Enter the ISE mode by pressing
RANGE
until the display changes to ISE
range.
Submerge the ISE electrode tip (4cm/1½”) into the sample
to be tested and wait a few seconds 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 98185
only), or the
proper ion charge is set (
HI 98184
only), and the instrument was calibrated
(see ISE CALIBRATION for details, page 27).
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 one-point calibration in order to
take ISE measurements.
• Changing the ISE electrode or the ion charge will need ISE range
calibration.
TEMPERATURE MEASUREMENTS
Connect the
HI 7662
temperature probe (
HI 98180/1/2
) or the temperature
connector (
HI 98183/4/5
) to the appropriate socket. Immerse the temperature
probe (
HI 98180/1/2
) or pH electrode (
HI 98183/4/5
) 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 33) (not for
HI 98180
).
BACKLIGHT FEATURE
The instrument is provided with a Backlight feature, which can be easily
toggled on and off through the keyboard by pressing
LIGHT
.
Note
: The backlight automatically shuts off after a set period (see SETUP
for details, page 33) with no buttons pressed.
