FRC Turbofoam TFC100 - Weldment Installation; Mounting Requirements and Procedure

TFC100 Rev180215
56
Weldment Installation
Note: Ensure that the mounting location meets the requirements for uniform water ow and that there
is enough room for the weldment, sensor, and connector to t.
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 tting
with no gaps or voids.
3. Screw sensor housing into weldment far enough to make sure it goes 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 on the pipe centerline.
4. Set sensor housing to dimension A (refer to gure). Make sure the alignment tab is centered on the pipe
as shown (it can be on upstream or downstream side).
5. Install tru-seal locknut and tighten with 2" wrench using light to medium torque. Make sure the sensor
housing alignment tab remains centered and the sensor housing does not rotate causing dimension A to
change.
6. Insert ow sensor into sensor housing. Align at spot on sensor rim with alignment tab and make sure
O-ring is in groove.
Note: The retainer cap is hand-tightened. There is an inside lip that stops 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 ow sensor engages the alignment tab and does not rotate.
7. Install retainer cap and hand tighten.
8. Connect ow sensor cable. (Refer to Wiring Section.)
Figure L13. Weldment Installation
Retainer Cap
O-Ring
Paddlewheel
Flow Sensor
Tru-Seal Locknut
Sensor
Housing
Weldment
Alignment Tab
Pipe Size Dimension
(Sch 40) A
1.5 1.95 to 1.80
2 1.95 to 1.80
2.5 1.90 to 1.75
3 1.88 to 1.73
3.5 1.88 to 1.73
4 1.85 to 1.70
5 1.85 to 1.70
6 1.85 to 1.70
Measurements are in inches.
Make sure that the alignment tab
is centered on the pipe centerline.
Note: Allow a minimum of 3 inches clearance above
the sensor for removal/installation.
Note: When the retainer cap is tightened
make sure the ow sensor engages the
alignment tab and does not rotate.
2.5"
2.8"
Alignment
Tab
A
C
L