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Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 49
g.
Verify that the screw (62) on the beam (54) is loose.
h.
Position the case correctly oriented toward the front and in line with the axis of the torque tube.
i.
Slide the case into the torque tube flange while observing through the side opening that the pin (72) is inserted into the
beam coupling end. Use a flat tool to easily backup the coupling flexure (71).
j.
When the case is in contact with the torque tube flange, verify that the beam is free to rotate by placing your finger on
the flexure (59) through the lower 3/4”NPT hole.
k.
Fasten the case with four screws (121) and washers (122). Firmly tighten.
l.
Verify again that the beam is free to rotate and that the coupling flexure (71) is not deformed. The coupling on the beam
(54) is tightened later.
NOTE:
At this point, if instrument service conditions are well defined, refer to Section 7 for instrument setting, coupling to
the torque tube
and setting the bias block S/A.
9.2.2. O
N A
12120
OR
12800
S
ERIES TORQUE TUBE
(
FIGURE
21)
The 12400 instrument can be mounted on different types of existing torque tubes. Kits including flange, gasket, and screws
are provided for the adapter tubes.
Figure 21 - Adaptation on 12800/12120 torque tube