Replacing The Transducer Assembly; Figure 3-13 Lt-07 Transducer Assembly - Emerson Daniel 3818 Maintenance And Troubleshooting Manual

Maintenance and Troubleshooting Manual
3-9000-772 Rev B
3.3

Replacing the transducer assembly

NOTE:
technician. Refer to the contact information on the back of this manual for field service
assistance.
The transducers are installed in matched pairs. Always replace the transducer pair of equal path
lengths (A1 and A2, B1 and B2 etc...). Also, if a transducer pair is moved from one chord position
to another, the transducer pair's delay time and delta delay time configuration parameters must
be re-configured.
Refer to
Procedure
1.
2.
3.
4.
5.
6.

Figure 3-13 LT-07 Transducer assembly

A.
B.
C.
D.
A. transducer cover
B. Cord grip nut and transducer cable
C. Set screw
D. Half dog set screw and lock nut
Replacing the transducer assembly
This procedure should be performed by a qualified Daniel Measurement Services
for the tool list.
Table 3-3
Disable electrical power to the meter.
Disassemble the shrouds. Refer to
Remove the thermal wrap covering the transducer assembly you are replacing.
Important: Be sure you follow the manufacturer's safety instructions when handling
and storing the thermal insulation. Only remove the thermal wrap for the transducers
you are replacing.
Use a 7/16 inch wrench to loosen the lock nut on the set screw. Hold the set screw
using a 1/8 inch Allen wrench as the lock nut is loosened a few turns. Use a 1/8 inch to
loosen, but do not remove, the half dog set screw. See the figure below and refer to the
LT-07 Transducer Assembly
Mark the cable position on the meter body. This mark will be helpful to rotationally
align the transducer with the transducer housing during re-assembly.
Pull the transducer assembly out of the housing.
.
Section 3.1.1
.
Figure 3-7
Section 3: Meter maintenance
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