LaMotte CDS 5000 Conductivity Meter - Manual (Page 16)

REPLACING THE PROBE
If the probe cannot be adequately cleaned, or becomes damaged, it must
be replaced. When a new probe is attached to the meter, the CDS 5000
must be recalibrated using the following procedure. Do not allow the CDS
5000 to contact any conductive surfaces while performing this procedure.
1. Set SLOPE and TDS knobs to the 12 o’clock position.
2. Use a Phillips head screwdriver to remove four screws from back of
meter. Remove back from meter.
3. Follow the Conductivity testing procedure described on page 8 to
measure the conductivity of a chosen standard. Choose the standard
that is closest to the value of the solutions commonly measured.
4. Using a small, flat edge screwdriver, adjust the top potentiometer
(indicated in the diagram) until value of standard solution is
displayed.
NOTE: Only adjust the top potentiometer; adjusting any other
potentiometer voids the meter’s warranty. If these other
potentiometers are adjusted, the meter must be returned to LaMotte
for repair.
5. Replace back on meter and replace the four screws. The CDS 5000 is
now calibrated and ready for use.
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