User Guide

2524
• To clear the numeric data
entry, press CLEAR key.
• The instrument should be
calibrated weekly or every
time the probe has been
changed.
• To quit from calibration
mode, press the CAL key.
PROCEDURE WITHOUT ATC (MTC)
• If you need to calibrate without ATC,
press the ATC/MTC key. The decimal
point "." of the reading will blink on the
TEMP. display (both in the Celsius and
in the Fahrenheit 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.
• Take the temperature of
the solution with a
Checktemp or a glass
thermometer.
• Enter the correct buffer
temperature value by
using the numeric keys
and press ENTER to
confirm the temperature
setting.
• Continue the procedure as for calibra-
tion with ATC but without temperature
probe connection.
PGM
Clear
CAL
ATC
MTC
0
ENTER
The conductivity calibration procedure is now
complete.
Notes:
• If the buffer dif-
fers by more than
±15% from the
set value, the "
BUF
"
symbol will blink
on the display.
Press the CAL
key to exit the
calibration mode
and repeat the
procedure using
the correct buffer.
• If the HI7669/2W temperature probe
is not connected to the meter, once
confirmed the selected buffer value,
"25°C" or "77.0°F" will start blinking on
the TEMP. display to prompt the se-
lection of the calibration temperature
value.
Take the temperature of
the solution with a
Checktemp or a glass
thermometer.
Enter the correct buffer
temperature value by
using the numeric keys
and press ENTER to
confirm the temperature
setting.
The calibration procedure is complete.
ENTER
CAL
CONDUCTIVITY
%TC
S
m
CAL
BUF