5
Required
pump output from
Max output of metering
pump selected (in
GPH*
)
=
(percent output required from the pump)
.32
.42
(A)
(B)
=
.76
(Percent output required from pump)
(C)
(B)
Check the size of the flowmeter selected based on:
• The required pipe size or mounting flange.
• The maximum and minimum flowrate of the flowmeter.
4. FLOWMETER SPECIFICATIONS
Example Result:
Set stroke knob to 87%
.76
=
.87
Square Root of
(Stroke knob setting on pump and
strokes per minute in step 5)
(C)
Example C:
=
Square Root of
Percent output
desired from
pump
(C)
3. DETERMINE THE STROKE SETTING
Model
Pipe
Flow-GPM*
Flow-LPM*
Primary Pulses
Primary Pulse
Size
MIN
MAX
MIN
MAX
per U.S Gallon
per Liter
RFP-07
3/4"
0.44
20
1.7
76
62.7
16.6
RFP-10
1"
0.8
50
3.0
189
34
9
RFP-15
1-1/2"
1.4
85
5.3
322
13.3
3.5
RFP-20
2"
1.75
130
6.6
492
13.3
3.5
RFP-30
3"
5
350
18.9
1325
7.7
2
RFP-40
4"
5
650
18.9
2460
4.8
1.3
RFP-60
6"
9
1300
34.1
4921
1
0.3
Example B:
2. DETERMINE PERCENT OUTPUT REQUIRED FROM PUMP
(C)
(A)
(Stroke knob setting on pump and
strokes per minute in step 5)
(D)
(D)
Summary of Contents for RFP Series
Page 8: ...8 RFP 07 RFP 10 RFP 15 RFP 20...
Page 9: ...9 RFP 30 RFP 40 RFP 60...