Emerson Rosemount TCL - Replacing the Electrolyte Solution and Membrane

10.2.4 Replacing the electrolyte solution and membrane
WARNING!
HARMFUL SUBSTANCE
Fill solution may cause irritation. Avoid contact with skin and eyes. May be harmful if
swallowed..
Procedure
1. Unscrew the membrane retainer.
2. Remove the membrane assembly and O-ring.
See Figure 10-2.
Sensor PartsFigure 10-2:
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. Remove the old pipe tape from the plug.
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.
c. Set it aside.
9. Hold the sensor at about a 45° angle with the cathode end pointing up.
10. Add electrolyte solution (PN 9210438) through the fill hole until the liquid
overflows.
Maintenance
Instruction Manual 73