Myron L 9PTK with FCE Free Chlorine - Manual (Page 48)

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4. Press to accept the resetting. Display will return to
Conductivity.
Xiii. cell checK
The cell check verifies the cleanliness of the conductivity/TDS/
resistivity sensor. In normal use the cell may become dirty or coated
and require cleaning. If the display is showing “.00” when the cell cup
is dry, the sensor is probably clean. However, when testing high purity
water in resistivity (“res”) mode improved accuracy may be desired.
No matter what a manufacturer claims, a sensor can and will become
contaminated or coated and, therefore, require cleaning. A true 4-wire
sensor, as in the Ultrameter III, helps to mitigate contamination, but
NO SENSOR IS 100% IMMUNE.
1. Press .
2. Press to display the stored memory records.
3. Press repeatedly until you pass the FAC SEL location.
The display will show a “cell ch” (see Figure 21).
4. Press to test. If cell is clean, “good” will momentarily be
displayed (see Figure 22). If cell is dirty, “cell cln” will be
displayed (see Figure 23) (ref. Cleaning Sensors, pg. 52).