Emerson Rosemount FCL, Справочное руководство

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Figure 8-1: Chlorine Sensor Parts
A. Membrane retainer
B. Membrane assembly
C. O-ring
D. Cathode
E. Electrolyte fill plug (wrap with pipe tape)
F. Pressure equalizing port
G. Information label
3. Hold the sensor over a container with the cathode pointing down.
4. Remove the fill plug.
5. Allow the electrolyte solution to drain out.
6. Inspect the cathode.
a) If it is tarnished, clean it using a cotton-tipped swab dipped in baking soda or
alumina.
Use type A dry powder alumina intended for metallographic polishing of
medium and soft metals.
b) Rinse thoroughly with water.
7. Wrap the plug with two turns of pipe tape and set aside..
8. Prepare a new membrane.
a) Hold the membrane assembly with the cup formed by the membrane and
membrane holder pointing up.
b) Fill the cup with electrolyte solution.
9. Hold the sensor at about a 45° angle with the cathode end pointing up.
10. Add electrolyte solution through the fill hole until the liquid overflows.
11. Tap the sensor near the threads to release trapped air bubbles.
12. Add more electrolyte solution if necessary.
Reference Manual Maintenance
00809-0100-3412 May 2019
Rosemount FCL 1056 79