CS3000 User’s Guide
16
Calsense
Compatible Flow Sensors
Calsense Flow Meters
Calsense Flow Meters are available in a variety of models, each supporting a different size. See the
Available Flow Meter Sizes and Models table below for more information. The correct Flow Meter size is
not determined by the size of the irrigation mainline, but rather by the station flow rates. Selection of
Flow Meter size depends on the following factors:
•
Maximum flow rate, in gpm, for the system
•
Minimum flow rate, in gpm, for the system
•
Permissible pressure loss through the flow meter
Available Flow Meter Sizes and Models
Flow Meter Size
Min Upstream Pipe length
Min Downstream Pipe Length
Pipe Diameter
1”
10”
5”
1”
1.25”
12.5”
6.25”
1.25”
1.5”
15”
7.5”
1.5”
2”
20”
10”
2”
3”
30”
15”
3”
To determine the correct Flow Meter size in an irrigation system, first determine the station with the
highest flow rate on the system. Next determine the station with the lowest flow rate on the system.
Then make sure that both flow rates are within the operating range of the selected Flow Meter size in
the table below. For systems with a large mainline, consider using multiple Flow Meters configured as a
bypass manifold to read both high and low flowing valves.
Recommended Flow Meter Operating Ranges
Model
Min Flow (0.5 fps)
Min Flow (1 fps)
Max Flow (15 fps)
Max Flow (15 fps)
PSI Loss @ gpm
FM-1B
2 gpm
3 gpm
50 gpm
50 gpm
0.5 psi @ 36 gpm
FM-1.25B
3 gpm
5 gpm
81 gpm
81 gpm
0.5 psi @ 69 gpm
FM-1.5B
4 gpm
7 gpm
105 gpm
106 gpm
0.5 psi @ 96 gpm
Model
Min Flow (0.5 fps)
Min Flow (1 fps)
Max Flow (15 fps)
Max Flow (30 fps)
PSI Loss @ gpm
FM-1.5
4 gpm
7 gpm
105 gpm
212 gpm
0.5 psi @ 96 gpm
FM-2
6 gpm
11 gpm
166 gpm
333 gpm
0.5 psi @ 165 gpm
FM-2B
6 gpm
11 gpm
166 gpm
333 gpm
0.5 psi @ 165 gpm
FM-3
12 gpm
24 gpm
363 gpm
727 gpm
0.5 psi @ 390 gpm
Model
Min Flow (0.5 fps)
Min Flow (1 fps)
Max Flow (15 fps)
Max Flow (15 fps)
PSI Loss @ gpm
FMBX
0.5 fps
1 fps
15 fps
30 gpm
n/a
Third-Party Flow Sensors
Compatible Impeller and Ultrasonic Flow Sensors
The CS3000 irrigation controller is also compatible with several third-party flow sensors including those
from Data Industrial®, Creative Sensor Technology (CST), FLOWMEC®, and Netafim™. When using one of
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