Operation & Installation Manual V12-V6 2010-05-31.doc
31/05/2010
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The transducers are installed and fixed mechanically at a very precise manufactured position
inside the meter body. To access the transducer position that needs to be replaced use the
following instructions:
Remove the top cover plate of the transducer pair to be replaced.
Disconnect the signal cable from the transducers (sel figure 2-7).
o
Turn the M2 locking screw a few turns anticlockwise, sufficient to allow the
cap to be rotated
o
Rotate the cap anticlockwise (a special tool is required) till it can be detached
from the transducer,
o
Pull the coaxial transducer cable with its connector gently out of the of the
transducer
Remove the hollow nut that fastens the transducer (requires a special tool).
Attach another special tool onto the fine screw thread on top of the transducer and pull
the transducer out of its pocket.
Replace the pair of damaged or malfunctioning transducers with a new pair.
Reassemble locking mechanism, transducer cable and cover in opposite order.
7.3.2. Exchange of Transducers - Pressurised Condition
Transducers can be replaced under pressure, just in case it does happen (MTTR < 15 min.).
KROHNE supplies a transducer retraction tool as an option (contact KROHNE for details).
The instructions for transducer exchange with this device are found in a specific user
manual.
DANGER!
Do not use the retraction tool without having read the specific user manual
Figure 7-1: Transducer extraction tool in initial position
