Rosemount Model 8732C Integral Mount Magnetic Flowmeter System
2-26
Field-Removable
Electrodes
The field-removable electrode option allows the user to remove the
electrode assembly with the flowtube still mounted in the line.
Frequently, this option will be used for cleaning the electrode head
when coating is of concern.
The flowtube should be drained of any process fluid prior to disassembly of
electrodes. Care should be taken when handling products, or electrodes
having been in contact with products of a corrosive nature, to avoid
personal injury. Take care to avoid rotating the electrode when removing
it to avoid leakage. Some resistance may be experienced due to the
tight o-ring fit.
Remove the Electrode Assembly
Use the following procedure to remove the electrode assembly
from the flowtube.
1. Loosen and remove the screws that secure the electrode cover.
2. Remove the electrode cover and o-rings. It is generally
recommended that new o-rings be installed upon reassembly.
3. Loosen and remove the screw that secures the signal wire
to the electrode.
4. Remove the retaining nut.
5. Take the electrode from the electrode housing by pulling it out,
with firm pressure, along the axis of the electrode.
Replace the Electrode Assembly
Use the following procedure to replace the electrode assembly
into the flowtube.
1. Lubricate the o-rings.
2. Install the o-rings on the electrode.
3. Insert the electrode assembly into the electrode housing.
4. Secure the electrode into the housing with the retaining nut.
Tighten the retaining nut to 15 in/oz of torque.
5. Secure the signal wire to the electrode with a screw.
6. Install the o-rings into the electrode cover.
7. Secure the electrode cover to the flowtube with the screws.
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