Operational Guide 29
If enabled, the number of days since the calibration
expired. (i.e. “CAL EXPIRED 2 DAYS AGO”).
The serial number of the probe.
Note: Press GLP at any moment and the instrument will return to measurement
mode.
The RANGE key will change measurement from conductivity to TDS to Salinity.
Conductivity Measurements
Connect the conductivity probe to the instrument and
wait until probe parameters are loaded. The following
message is then displayed on the LCD: “PROBE
CONNECTED”.
Verify if the probe has been calibrated. Suspend the probe into the solution
to be tested. The sleeve holes must be completely submersed. Tap the probe
repeatedly to remove any air bubbles that may be trapped inside the sleeve.
The conductivity value will be displayed on the rst
LCD line, the temperature on the second LCD line and
calibration or range speci c information on the third
LCD line.
To toggle between information displayed on the third LCD line, use the ARROW
keys.
If the reading is out of range when the range is set to
automatic, the full-scale value (200.0 mS/cm for ATC
mode or 500.0 mS/cm for absolute conductivity) will
be displayed blinking.
Note: Temperature-compensation and absolute conductivity (NoTC) are
selected in the SETUP con guration.
Automatic Temperature Compensation (ATC): The conductivity probe has
a built-in temperature sensor; the temperature value is used to automatically
compensate the EC/TDS reading. When this option is selected, “ATC” tag is
displayed. A temperature coe cient for the sample must also be set.
NaCl % GLP
Information
EC/TDS
Measurements
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