Hanna Instruments HI 98360 - Manual (Page 15)

15
N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N
NaCl calibration is a one-point procedure at 100.0% NaCl. Use the
HI 7037L calibration solution (sea water solution) as a 100% NaCl
standard solution.
Rinse the probe with some of the calibration solution or
deionized water. Submerse the probe into
HI 7037L
solution. The sleeve holes must be completely submersed.
Tap the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
To enter NaCl calibration select the NaCl range and press
CAL.
The “
CALIBRATION” tag is displayed, “NOT
READY”, “~” and “ ” start blinking. The
primary LCD will display the NaCl reading in
percentage. The secondary LCD will display
“
100”.
When the reading is stable, the “ READY”
tag will be displayed and the “ CFM”
tag starts blinking on the LCD, asking
for confirmation.
Press CFM to confirm calibration.
The instrument stores the calibration value
and returns to measurement mode.
Notes: • If the reading is too far from the
expected value, “ WRONG” and
“ ” tags will blink. Calibration
cannot be confirmed.
• If the temperature of the standard
is out of the 0.0 – 60.0 ºC
temperature range, the
“
WRONG”, “ ” and “ºC” tags and the temperature
will be displayed blinking.
• If the meter range is changed to EC, and a new EC calibration
is performed, the NaCl calibration is automatically cleared.
Thus, a new NaCl calibration is required.