Installing The Bwt Transducer - Panametrics BWT System Installation Manual

Chapter 2. Standard Installation (FTPA Buffers)
Flange Size
and Rating
1 1/2" ANSI 900#
1 1/2" ANSI 1500#
6.
You must torque the flange studs in small increments. Divide the appropriate torque by 10 to determine the
number of steps. For example, if the required final torque is 90 ft-lb, the remaining steps would be 20, 30, 40, 50,
60, 70, 80 and 90 ft-lb.
7. Set the torque wrench for the first setting and torque the studs in sequence. Turn each stud a maximum of a
1/8 turn at a time.
8. Repeat Step 7 for each of the incremental torque settings.
9. Check the flange alignment again to ensure that the flanges are parallel to each other. Measure the spacing
between the flanges with the caliper on at least four equally-spaced points. The maximum tolerance is ±0.2 mm
difference between the four measured points. If you cannot achieve a tolerance of ±0.2 mm or less, replace the
gasket with a new gasket, and repeat this entire procedure.
10. Repeat the above steps for the remaining flanges.
2.5

Installing the BWT Transducer

Installing the BWT transducers into the FTPA Buffer requires the following three steps:
• Installing and orienting the junction box (see page 17 )
• Inserting the BWT transducers (see page 18 )
• Verifying the installation (see page 19 )
16
Table 1: Final Torques
Stud Rating with
4 Studs/Flange
B7
B7
Wrong
Stud Diameter (in.)
x Length (in.)
1" x 6 "
1" x 6"
Caliper
Right
Torque in
ft-lb (N-m)
107 (145)
107 (145)
BWT™ System Installation Guide