VEGA VEGAFLEX 83 4 … 20 mA_HART two-wire Rod probe - Polished version With SIL qualification - Manual (Page 72)

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10 Diagnostics and service
VEGAFLEX 83 • 4 … 20 mA/HART two-wire
44225-EN-130823
After an electronics exchange the settings of the electronics must
be checked and verified. Only then, the instrument is again ready for
operation.
10.6 Exchanging the rod
The rod (meas. part) of the probe can be shortened, if necessary. To
loosen the meas. rod you need a fork spanner with spanner width 10.
Caution:
Remember that the polished rod of the food version is very sensitive
to damage and scratching. Use special tools in order to avoid damag-
ing the surface.
1. Loosen the rod by applying a fork spanner to the flat surfaces
(SW 10), provide counterforce manually on the process fitting
2. Twist off the loosened measuring rod manually
3. Put the attached new seal ring onto the thread.
4. Insert the new measuring rod carefully by hand with a twisting
motion into the opening of the process fitting.
5. Continue screwing in the rod manually into the opening of the pro-
cess fitting.
6. Exert counterforce manually and tighten the rod on the flat sur-
faces with a torque of 6 Nm (4.43 lbf ft).
Exchanging the rod