Pipe Saddle
(ref.)
Mounting
Adapter
Gasket
(ref)
4 . Locate the sensor rotor assembly a fixed distance from the center of the
pipe . To position the impeller at this depth, a reference measurement for
the pipe size and schedule is used .
a . Look up the pipe size and schedule number in the
“Customer Reference
Number Tables” on page 17
and note the Customer Reference
Number (Customer Ref #) .
NOTE:
N
The Customer Reference Number is calculated using the following
formula:
Ref # = Insertion Depth + Wall Thi Cover Thickness (0 .875 in .
(22 mm))
b . Next, measure from the outside wall of the pipe to the top of the
installed mounting adapter . This is dimension “B” in
Figure 5
.
c . Add this number to the reference measurement . The resulting number
is dimension “C” in
Figure 5
.
Dimension “C” = Customer Ref # + Dimension “B”
d . Dimension “C” is the distance from the recess of the sensor tip to the
bottom of the stem collar . Insert the metal tab of a tape measure into
the recess of the flow sensor tip . Extend the tape up the stem and mark
the shaft with a pencil .
e . Slide the collar along the shaft until its bottom surface is at the mark
on the stem . Tighten the cap screw on the collar . When the sensor is
reassembled, this will set the insertion depth of the sensor .
5 . Attach the sensor to the mounting adapter by gently pushing the flow
sensor into the mounting adapter until the cover touches the mounting
adapter . Tighten the cover against the O-ring seal . This will seal the
sensor assembly .
6 . Continue to insert the flow sensor stem until the stem collar meets the
cover . Thread the hex cap onto the mounting adapter but do not tighten .
7 . Align the flow sensor with the pipe by using the flat cover on the
electronics housing as a guide . Place a straightedge along the cover and
rotate the sensor until the straightedge is parallel with the pipe as shown
in
Figure 6
.
8 . Tighten the hex cap over the collar approximately 10 ft-lb . The hex cap
holds the sensor alignment but performs no sealing functions .
DO NOT OVER TIGHTEN
9 . Pressurize the pipeline and check for leaks
.
Pipe Saddle
(ref.)
Mounting
Adapter
Gasket
(ref)
Stem
Stem Collar
Hex Cap
Cover
Figure 5: Dimensions "B" and "C"
Straight Edge Parallel to Pipe
Pipe
Pipe
SDI
Flow Sensor
Figure 6: Level the sensor
Mechanical Installation
Page 9
May 2017
SEN-UM-00217-EN-10
