Electrode Replacement - ABB 10DX3111G Instruction Manual

4.3.3.2 Electrode Replacement

1) Pull the electrode from its seat in the side of the meter spool and liner. This is facili-
tated by partially running one of the removed #10-32 cap screws that held the electrode
cover in place into the tapped hole in the electrode head and using this as a grip for elec-
trode withdrawal. In polyurethane-lined meters an 'O'-ring on the underside of the elec-
trode head also must be withdrawn.
Exercise extreme care when withdrawing electrode from its seat so that
little or no tension is exerted on the connecting electrode wire. If this
wire should break within the meter pipe, the meter is not repairable.
2) Loosen the #4-40 x 1/8" hex socket set screw in the head of the electrode. Withdraw
the electrode wire with its sleeve tip from its electrical connection seat in the side of the
electrode head.
3) Insert and reseat replacement electrode. For polyurethane-lined meters, be certain the
new 'O'-ring which accompanies the new electrode is seated in the groove under the head
of the electrode.
4) Reassemble by reversing the procedure given in steps #2) through 5) in subsection
4.3.3.1. Use pipe dope on the threads of the 2-inch cap when replacing on the electrode
boss.
It is possible to interchange simple electrodes and electrode-
transducer assemblies in NEOPRENE- and polyurethane-lined me-
ters, if the meter body was manufactured with ultrasonic transducer
leads installed and if proper accessory parts such as electrode and
dust covers, insulators, etc., are obtained.
10DX3111 INSTRUCTION MANUAL
CAUTION
NOTE
4-5