EC / TDS 25
5. Press GLP/ACCEPT key to confirm calibration. The instrument
displays “SAVING”, stores the calibration values and returns to
measurement mode.
Note: The TDS reading is automatically derived from the
EC reading and no calibration is needed.
Manual Calibration
This option may be used to perform a manual calibration in a
custom standard, i.e. to set the cell-constant value directly.
To minimize cross-contamination, use two beakers: one for rinsing
the probe and the other for calibration.
1. Rinse the probe in the calibration standard and shake off any
excess solution (first beaker).
2. Place the probe in the standard ensuring that the sleeve holes
are covered with solution (second beaker).
3. Press SETUP and use the
keys to select C.F. (cm
-1
).
4. Press CAL/EDIT.
5. Use the
keys to modify C.F. (cm
-1
) until the display reads
the Custom Standard value.
6. Press GLP/ACCEPT. “MANUAL CALIBRATION CLEARS PREVIOUS
CALIBRATIONS” is displayed on the third LCD line. CAL and
ACCEPT tags are displayed blinking.
7. Press GLP/ACCEPT to confirm or press ESC to exit without
changing.
Note: Using manual calibration will erase previous calibrations;
and both log files and GLP will display “MANUAL” as standard.
Clear Calibration
Press CAL/EDIT to enter Calibration mode, then press LOG/CLEAR.
ACCEPT tag is displayed blinking and “CLEAR CALIBRATION“
message on the third LCD line.
To confirm, press GLP/ACCEPT. “PLEASE WAIT“ message is displayed
followed by "NO CAL" confirmation screen.