8
Note
: Be certain to press
Enter
to reset the cell constant
to 5.00. If
MODE
is pressed, the unit retains the previous cell
constant and calibrates from a value that is already offset.
Temperature Coefficient
The unit uses the temperature coefficient to calculate temperature
compensated conductivity. The default value is 1.91%. To change the
temperature coefficient, use the up and down keys to adjust the value
between 0 and 4.00%. Press
Enter
to save the new value, or press
MODE
to cancel the change and display the Temperature Reference
screen.
Temperature Reference
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 up and down keys to adjust the value
between 15 and 25°C. Press
Enter
to save the new value, or press
MODE
to cancel the change and display the Conductivity Calibration
screen.
Conductivity Calibration
1. Immerse the probe in a standard of known conductivity, preferably
a standard in the middle range of the solutions to be measured.
Completely submerge the probe without touching the sides of the
calibration container. Shake the probe lightly to remove any air
bubbles trapped in the conductivity cell.
2. Allow temperature to stabilize. The message ‘rAng’ (range) may
display briefly to indicate unit auto-ranging; this is normal. After
temperature stabilization, use the up and down keys to adjust the
conductivity value to that of the conductivity standard at 25°C. Press
Enter
to calibrate. The unit beeps twice to indicate a successful
calibration, then automatically switches to normal operation mode.
Conductivity Measurements
1. Turn the unit on. Place the probe in the solution to be measured.
Completely submerge the probe. Shake the probe lightly to
remove any trapped air bubbles in the conductivity cell.
2. Press
MODE
to enter the desired measurement mode. The
message ‘rAng’ (range) may appear briefly on the display indicate
auto-ranging; this is normal. Allow temperature to stabilize before
taking measurements.
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