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Reference Manual
00809-0100-4530, Rev BA
July 2009
7-31
Rosemount 5300 Series
Changing the Probe
1. Loosen the nut.
2. Remove the transmitter head from the old probe.
3. On the new probe, make sure that the protection plug is removed and the
upper surface of the Process Seal is clean. Also make sure that the
spring-loaded pin at the center of the Process Seal is properly inserted.
4. Mount the transmitter head on the new probe.
5. Fasten the nut again.
6. If the new probe is not of the same type as the old one, update the
transmitter configuration by setting the Probe Type parameter to the
appropriate value:
HART Fast Key sequence [2, 1, 2]
or
in RRM, click the Tank icon in the Device Config/Setup toolbar.
7. Measure the Probe length and enter the measured value:
HART Fast Key sequence [2, 1, 2],
or
in RRM, click the Tank icon in the Device Config/Setup toolbar, and
select the Probe tab in the Tank window.
8. In certain cases, a fine tune by using the Trim Near Zone function is
necessary.
In RRM Guided Setup > Device specific setup can be seen if it is
needed.
For 375, use HART Fast Key Sequence [2, 1, 7, 2].
When using the Trim Near Zone function, product level in the vessel
must be lowered beneath the Near Zone to get precise measurement
data (see Figure 7-23).
Transmitter
head
Nut
Process
seal
Probe