FSA100 Rev1206
16
Weldment Installation
Note: Ensure that the mounting location meets the requirements for uniform
water flow. (Refer to Flow Sensor Location.)
Note: Ensure that there is enough room for the weldment, sensor, and
connector to fit. (Refer to Figure 7.)
1. Drill and deburr a 1-11/16" to 1-3/4" diameter hole at mounting location.
2. Center weldment mount over hole and weld it to pipe. The weld must be
continuous around the fitting with no gaps or voids.
3. Screw sensor housing into weldment. Run it down far enough to make sure it
will go through the pipe freely then back it out.
Note: The paddlewheel sensor must be correctly aligned in the water stream.
The alignment tab is used to set the position of the sensor. Make sure that
the alignment tab is centered on the pipe centerline. (Refer to Figure 7.)
4. Set sensor housing to dimension A in Figure 7. Make sure the alignment tab is
centered on the pipe as shown (it can be on upstream or downstream side).
5. Screw on tru-seal locknut and tighten with a 2" wrench using light to medium
torque. Make sure that housing does not rotate causing dimension A to change
and the sensor housing alignment tab remains centered.
6. Insert flow sensor into sensor housing. Align flat spot on sensor rim with the
alignment tab and make sure o-ring is in groove.
Note: The retainer cap only needs to be hand tightened. There is an inside
lip that will stop the cap from turning when it makes contact with the
alignment tab. This provides the correct pressure to make the seal at the
o-ring. Make sure the flow sensor does not disengage from the alignment
tab and rotate.
7. Install retainer cap and hand tighten.
8. Connect flow sensor cable. (Refer to Install Cables.)
