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Conductivity Calibration
1.
Press "Mode" key to enter the "Conductivity Measure
Mode". The units will be in μS/cm or mS/cm.
2.
Clean and immerse the probe (at least 2" to 3" or 5 to 7 cm
from the tip) into standard solution without touching the
sides of the calibration container. Shake the probe lightly
to remove any air bubbles trapped in the conductivity
cell. Allow temperature to stabilize. The message "RANG"
(range) may appear briefly on the display indicating auto-
ranging. This is normal.
3.
Press and hold the "Mode" key for 2 seconds to enter the
"Conductivity Calibration Mode". The "CAL" icon appears
on the display.
4.
If needed, adjust the following conductivity settings:
TDS FACTOR:
The default factor value is 0.65. To change the TDS
factor, use the "Store" and "Scroll" keys to adjust the
value between 0.30 and 1.00. Press "Hold" key to save
the new value and the unit will automatically go into the
next calibration parameter. If the "Mode" key is pressed
instead of the "Hold" key, any changes made will be
canceled and the previous calibration settings will be
retained.
TEMP. COE.:
The unit uses the temperature coefficient to calculate
temperature compensated conductivity. The default
value is 1.91%. To change the temperature coefficient, use
the "Store" and "Scroll" keys to adjust the value between
0 and 4.00%. Press the "Hold" key to save the new value
and the unit will automatically go into the next calibration
parameter. If the "Mode" key is pressed instead of the
"Hold" key, any changes made will be canceled and the
previous calibration settings will be retained.
TEMP. REF.:
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default
value is 25 °C. To change the temperature coefficient, use
the "Store" and "Scroll" keys to adjust the value between
15°C and 25°C. Press the "Hold" key to save the new value
and the unit will automatically go into the next calibration
parameter. If the "Mode" key is pressed instead of the
"Hold" key, any changes made will be canceled and the
previous calibration settings will be retained.
5.
Use the "Store" and "Scroll" keys to adjust the conductivity
value to that of the conductivity standard at 25 °C. Press
"Hold" key to calibrate. The unit displays "CAL OK" to
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