GF Signet 2537 Paddlewheel Flow Sensor - Manual (Page 3)

3 Signet 2537 Flowmeter
Location of Fitting
Recommended sensor upstream/downstream mounting
requirements:
Sensor Mounting Position
• Horizontal pipe runs: Mount sensor in the upright (0°) position for best performance. Mount at a
maximum of 45° when air bubbles are present (pipe must be full). Do not mount on the bottom of the
pipe when sediments are present.
• Vertical pipe runs: Mount sensor in any orientation; however, downward À ow is not recommended.
Upward À ow is preferred to ensure full pipe.
+45° -45°
0°
Process
Pipe
Reducer
15 x I.D. 5 x I.D. 20 x I.D. 5 x I.D.
90° Elbow
40 x I.D. 5 x I.D.
2 x 90° Elbow
3 dimensions
25 x I.D. 5 x I.D.
2 x 90° Elbow
50 x I.D. 5 x I.D.
Pump/Valve
+ GF +
+GF+
+ GF +
+GF +
+GF+
OK OK OK
Vertical flow is OK if the pipe remains full at all times.
Select a location with suf¿ cient length of straight pipe
immediately upstream of the sensor.
Locating the sensor in a trap or where the À ow is upward
helps to protect the sensor from exposure to air bubbles
when the system is in operation.
These con¿ gurations are not recommended because it is
dif¿ cult to keep the pipe full.
Installation: Pipe fi ttings
Georg Fischer Signet offers a wide selection of installation ¿ ttings that control the position of the paddlewheel in relation to the
dimensions of the pipe.
Type Description
2 to 4 inch, cut 1-7/16 inch hole in pipe
Over 4 inch, cut 2-1/8 inch hole in pipe
Special order 14 in. to 36 in.
0.5 to 2 inch versions (MPVC or CPVC)
2.5 to 4 inch versions (PVC)
2 to 4 inch, cut 1-7/16 inch hole in pipe
6 to 8 inch, cut 2-1/8 inch hole in pipe
Available in 10 and 12 inch sizes only
Cut 2-1/2 inch hole in pipe
Weld in place using solvent cement
Iron, Carbon Steel,
316 SS Threaded
tees
Carbon steel &
stainless steel
Weld-on
Weldolets
2 to 4 inch, cut 1-7/16 inch hole in pipe
Over 4 inch, cut 2-1/8 inch hole in pipe
For pipes from DN 15 to 50 mm
PP or PVDF
Type Description
Plastic
tees
Metric
Union
Fitting
PVC
Saddles
Iron
Strap-on
saddles
PVC
Glue-on
Saddles
1.5 in. to 2 in. PVDF insert
Fiberglass
tees
FPT
0.5 to 2 in. versions
Mounts on threaded pipe ends
Metric
Wafer Fitting For pipes DN65 to 200 mm
PP or PVDF
d