Emerson Rosemount 3410 Series, Maintenance And Troubleshooting Manual

Page: 71 / 96

WARNING
CRUSHING HAZARD
During meter installation or removal, always place the unit on a stable platform or surface
that supports its assembled weight.
Failure to comply could allow the meter to roll, resulting in serious injury or equipment
damage.
3.7.1 Remove transducer cables
The meter body ports are identified by stamped or cast lettering adjacent to the
transducer port (i.e. Model 3414 - A1, A2, B1, B2, C1, C2, D1, and D2; Model 3412 - A1, A2,
B1, and B2; Model 3411 - A1 and A2).
Procedure
1. Remove power to the meter.
2. Unscrew the cable nut from the transducer holder and then, pull the cable chordset
from the transducer holder (see Figure 3-17 ).
3. Cut the tie wraps for the transducer cable you are replacing.
4. Use a wrench and loosen the cable gland (where the transducer cable enters the
Base Electronics Enclosure) until the transducer cable freely slides inside the gland.
5. Remove the two bolts holding the Base Enclosure cover to the Transmitter
Electronics Enclosure using a 6mm Allen wrench.
6. Lift the Transmitter Electronics Enclosure from the Base Enclosure. It may be
necessary to remove the ground lug wire and loosen the conduit connections prior
to removal.
7. Carefully prop the Transmitter Electronics Enclosure to the side.
8. Use a flat-blade screw driver and disconnect the transducer wiring terminal block
from the Acquisition Module (see Figure 3-18 ).
9. Place the Transmitter Electronics Enclosure in a clean dry area. Be careful not to
dislodge or damage the enclosure gasket.
10. Remove the transducer cable wires from the terminal block and slide the existing
cable through the Base Enclosure gland.
3.7.2 Install transducer cables
Procedure
1. Use the existing cable and cut the new cable (P/N 1-360-01-310) for each chordset
to same length.
2. Insert the keyed chordset into the transducer holder. Make sure the keyed parts are
correctly aligned.
3. Screw the cable nut onto the transducer holder turning clock-wise until hand-tight.
Ensure the threads are correctly aligned and do not overtighten the cable nut.
Maintenance and Troubleshooting Manual Meter repairs
00809-0600-3104 April 2022
Rosemount Gas Ultrasonic Flow Meters 71