User Guide

3332
Notes:
• If the temperature probe is not con-
nected to the meter, once the selected
buffer value is confirmed, "25°C" or
"77°F" will start blinking on the TEMP.
display.
Enter the sample tempera-
ture value using the numeri-
cal keys and press the EN-
TER key to confirm the tem-
perature setting.
Now the calibration procedure is com-
plete.
• To quit from the calibration
mode, press the CAL key.
• To clear the numeric data
entry, press the CLEAR key.
PROCEDURE WITHOUT ATC
(MTC)
• If you need to calibrate without ATC,
press the ATC/MTC key and the deci-
mal point will blink on the TEMP. LCD
(both in the Celsius and in the Fahren-
heit scale).
• During calibration once the selected
buffer value is confirmed, "25°C" or
"77.0°F" will start blinking on the TEMP.
display to prompt the selection of the
calibration temperature value.
ENTER
CAL
PGM
Clear
ATC
MTC
0
the liquid. Immerse the
HI 7669/2W temperature
probe as close as pos-
sible to the conductivity
probe. Wait for 2 or 3 min-
utes for the thermal equi-
librium.
• If the buffer is within
39 and 49 mS, the
"
BUF
" symbol stays
still.
• If the " " starts
blinking, wait for ap-
proximately 30 sec-
onds for the reading
to stabilize.
• Once the reading is
stable the " "
symbol goes off and
CON prompts the
user to confirm the
reading.
• Press the CON key to
confirm the calibration.
The instrument is now calibrated and returns
to normal operation.
CON
NaCl
%
BUF
CON
NaCl
CAL
%
BUF
NaCl
CAL
%
BUF