11. Tap the sensor near the threads to release trapped air bubbles.
12. Add more electrolyte solution if necessary.
13. Place the fill plug in the electrolyte port and begin screwing it in.
14. After several threads have engaged, rotate the sensor so that the cathode is
pointing up and continue tightening the fill plug.
Do not overtighten.
15. Place a new O-ring in the groove around the cathode post.
16. Cover the holes at the base of the cathode stem with several drops of electrolyte
solution.
17. Insert a small blunt probe, like a toothpick with the end cut off, through the pressure
equalizing port.
See Figure 10-2.
CAUTION!
EQUIPMENT DAMAGE
Do not use a sharp probe. It will puncture the bladder and destroy the sensor.
18. Place a drop of electrolyte solution on the cathode; then place the membrane
assembly over the cathode.
19. Screw the membrane retainer in place.
Spare PartsTable 10-1:
Part number Description
33523-00 Electrolyte fill plug
9550094 O-ring, Viton 2-014
33521-00 Membrane retainer
23501-02 Total chlorine membrane assembly: includes one membrane assembly and
one O-ring
23502-02 Total chlorine membrane kit: includes three membrane assemblies and three
O-rings.
9210438 Total chlorine sensor fill solution , 4 oz (120 mL)
10.3 Sample conditioning system
10.3.1 Reagent
The sample conditioning reagent lasts about two months.
Maintenance
74 Rosemount TCL
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