Replace The Transmitter Head - Emerson Rosemount 5408 Reference Manual

Service and Troubleshooting
The Double Bounce Offset is negative if the reflection point (normally the tank roof) is
below the Tank Reference Point.
7.6

Replace the transmitter head

In Explosion Proof/Flameproof and Non-Incendive/Type n installations, do not remove
the transmitter covers when power is applied to the unit.
Procedure
1.
2.
3.
4.
5.
122
Disconnect the power supply.
If applicable, remove the external ground cable from the transmitter head.
Turn the jam screw clockwise until it is completely threaded into the housing.
Remove the cover.
Remove all electrical leads and disconnect conduit.
H2.5 mm
Reference Manual