43
CONDUCTIVITY MEASUREMENT
CALIBRATION MESSAGES
•
Wrong standard solution. Check the standard solution.
This message appears when the difference
between the reading and the value of the selected standard is significant. If this message is displayed,
check if you have selected the appropriate calibration standard.
•
Wrong standard temperature.
This message appears if the standard temperature is out of the
allowable standard temperature range (0 - 60 °C)
.
•
The current range was already calibrated. Change the standard solution.
The calibration for this
conductivity range was already done. Please change the standard.
•
Press <Clear Offset> to clear old calibration.
Clear the offset of the electrode calibration.
•
Press <Clear Cal> to clear old calibration.
Clear all old calibrated standards.
Make sure the instrument has been calibrated before taking conductivity measurements.
DIRECT MEASUREMENT
To measure the conductivity of a sample using the Direct reading mode:
• Press
and then
to select conductivity measure mode.
• Select the
Direct reading mode (see Conductivity Setup).
• The conductivity probe should be rinsed with deionized water.
• Shake off excess water.
• If possible rinse probe with a sample of solution to be tested.
Swirl and raise and lower probe in this rinse solution.
• Insert probe in center of a beaker with the sample, away
from the wall or bottom of beaker. The upper vent holes must
be covered with solution.
• Gently stir solution and wait for probe to reach thermal
equilibrium with the sample.
• Tap probe repeatedly to dislodge any air bubbles that may be
trapped inside the sleeve. Allow time for the reading to
stabilize.
• The measured conductivity value will be displayed on the screen.
All manuals and user guides at all-guides.com
