10
• Record the temperature of the buffer solution from the thermometer
(e.g. 20 °C).
• Switch the instrument on by pressing
On/Off
.
• Press and hold down
Temp
to display the
temperature.
• Adjust the TEMPERATURE knob to display 20 °C.
• Release
Temp
key to display conductivity measurement.
• Select 19.99 mS/cm (
HI8633
) or 1999 mg/L (
HI8734
) range by
pressing the appropriate range key.
• Follow LCD calibration indication. Adjust the calibration knob
until the display shows for
HI8633
the conductivity reading at
25 °C (see the conductivity vs. temperature table), e.g. @ 25 °C,
12880
µ
S/cm = 12.88 mS/cm, or for
HI8734
the TDS reading
at 25 °C (see the TDS vs. temperature chart), e.g. @25 °C,
1382 mg/L.
• All subsequent measurements will be compensated to 25 °C (77 °F).
If you prefer to standardize the temperature compensation to 20 °C
(68 °F) rather than 25 °C (77 °F), leave the TEMPERATURE knob at
18°C (if the temperature of the solution is 18 °C), adjust the knob
to read “
11.67 mS
” (see the conductivity vs. temperature chart) or
“
1251 mg/L
” (see the TDS vs. temperature chart). All subsequent
measurements will be compensated to 20 °C.
