Hanna Instruments HI 3512 - Manual (Page 13)

13
3 cm
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 and the
instrument was calibrated (see ISE CALIBRATION for details, page 29).
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 ISE parameter will require calibration.
TEMPERATURE MEASUREMENTS
pH channel
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 40).
EC/TDS/NaCl/Resistivity channel
Immerse the conductivity probe (which includes also the temperature
sensor) into the solution to be tested. The sleeve holes must be completely
submerged. Tap the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
If needed, press
CHANNEL to select EC channel or/and press RANGE
repeatedly until the desired range (EC, Resistivity, TDS, Salt) is selected on
the LCD. If needed, select the “Automatic” or “No TC” compensation mode
to perform temperature measurements (see SETUP for details, page 40).
Allow for the reading to stabilize. The main LCD line displays the
measurement in the selected range, while the temperature is
displayed on the lower LCD line.