LaMotte TDS 6 Conductivity - Manual (Page 17)

Automatic Calibration (Conductivity)
In the Automatic Calibration mode, the meter is capable of accepting a
single-point calibration or up to 4 points for multi-point calibration with the
maximum of 1 point per specific measurement range. For the automatic
calibration standard values refer to Table 1.
1. If necessary, press MODE button to select the
conductivity mode.
2. Rinse the probe thoroughly with deionized water or
a rinse solution, then rinse with a small amount of
calibration standard.
NOTE: For Automatic Calibration one of the
calibration standards listed in Table 1 must be used.
3. Dip the probe into the calibration standard.
Immerse the probe tip beyond the upper steel band .
Gently stir the sample with the probe to create a
homogeneous sample. Allow time for the reading to
stabilize.
4. Press CAL button to enter the conductivity
calibration mode. The [CA] indicator will appear for
1.5 seconds, and a value will appear flashing.
NOTE: To exit calibration without confirmation,
press CAL button again to go back to measurement
mode.
5. Wait for the value to stabilize and press ENTER
button. The calibration standard value will appear
for 3 seconds. If the calibration has been successfully
performed, [donE] will be displayed for about 3
seconds, and the meter will return to the
measurement mode.
6. To perform the next point calibration in the
multi-point calibration, repeat steps 1-5 until all
points have been calibrated.
IMPORTANT NOTES:
1. The meter allows a tolerance range of ±40% of the
calibration standard. An error message “Err 1” will be displayed for 3
seconds if an attempt is made to calibrate with a solution with a value
outside of the tolerance range.
For instance: For 1413 µS conductivity calibration standard, 40% tolerance
is from 848 µS to 1978 µS.
mS
mS
mS
mS
CAL
HOLD
ENTER
Measurement Mode
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