Emerson Rosemount 3410 Series, Руководство по техническому обслуживанию и устранению неисправностей

Страница: 49 / 96

NOTICE
Ensure that the transducers identified as belonging to end 1 are installed on end 1
of the meter housing and those identified as belonging to end 2 are installed on end
2 of the meter housing.
5. Replace the O-ring and Backup O-ring on the transducer holder. It is highly
recommended that the O-rings be replaced when the transducer is removed from
the holder or stalk. Ensure that the contoured side of the backer ring is facing
toward the transducer capsule attached to the end of the transducer holder.
Lubricate with Molykote 111 Silicone Grease or equivalent.
Note
Replacing the O-rings at this point minimizes the chances of damaging the
transducer by dropping it.
6. Apply a small amount of nickel anti-seize (N.A.S.) compound (P/N 2-9-9960-134) to
the outer threads of the transducer holder (see Figure 3-4 ).
7. Carefully install the transducer holder assembly into the transducer mount. Make
sure the threads of the holder and mount are correctly aligned. Use a 1 ¼ ” socket
and screw the transducer assembly into the mount. Tighten to securely seat the
assembly in the mount. Do not over tighten (see
Figure 3-5 ).
8. If replacing T-21 or T-22 transducers, install the keyed transformer module into the
transducer holder (see Figure 3-5 ).
a) Apply a small amount of Molykote 111 to the transformer module O-ring.
b) Insert the keyed transformer module into the back end of the transducer
holder.
Maintenance and Troubleshooting Manual Meter repairs
00809-0600-3104 April 2022
Rosemount Gas Ultrasonic Flow Meters 49