®
Technical Specifications
FM142
®
INSTRUMENTS, LLC.
Product Data Sheet
PDS-142
2026-07-31
Waterworks Intake
Meter
Description
A Waterworks Intake Meter is an economical
and easily installed meter for large volume flow
measurement at the discharge end of a closed
conduit, inverted siphon, and reservoirs.
Existing structures often provide an excellent
mounting for the meter.
Certified Accuracy
Accuracy is within 2% of actual flow for the
specified meter range. This accuracy is
guaranteed by certified wet calibration at three
test points in Sparling's NIST traceable primary
flow laboratory. Each meter is tested at low
flow, mid-range, and high flow. A test
certificate is provided with each meter.
Installation
The meter propeller, fully submerged and
facing the center of the flow at the discharge
end of a pipe, closed conduit, or inverted
siphon, is suspended from a pipe column
attached to a wall or simple support structure.
Concrete pipe or a simple culvert structrue is a
satisfactory meter tube. Gate valves or other
obstructions should be at least ten pipe
diameters upstream from the meter.
Straightening vanes may be furnished as a
separate item to insure straight flow conditions
and accurate measurement.
Materials
All materials used in manufacturing are highly
resistant to normal water corrosion and
recommended for water works application.
Special materials are utilized for highly
corrosive conditions. Liquid temperatures
should not exceed 100°F.
Propeller Design Minimizes Maintenance
- The
propeller is made of a tough , durable,
abrasion-resistant material. The conical shape
and the ability of the material to flex under
stress allows the propeller to shed debris such
as clumps of algae or rags without damage.
Rugged Construction Guarantees Long Life
-
Materials of construction have been selected to
provide many years of service. Shafts and
bearings are stainless steel, bearing housings
are Brass (10" - 30") and Cast Iron (36" - 72").
Drop pipes are Brass (10" - 30") and Steel (36" -
72").
Rate Indication and Totalizer
Total flow is shown on a 6-digit Straight
Reading Clock which registers in units or
multiple units of Gallons, Cubic Feet or other
standard units.
Flow Rate is easily obtained by timing the
register clock test hand.
Flow Ranges
These meters measure accurately over a wide
flow range of 10:1 or greater. The maximum
flow ranges can be safely exceeded by 50%
when used intermittently. Flow rates are
provided in the table under specifications for
each of the sizes.
Anticipated flow ranges and minimum and
normal flow rates should always be specified
on application sheets accompanying your
order.
®
INSTRUMENTS, LLC.
Table 1: BaseModelNumber
FM142
-
Direct Drive Open Flow Meterhead
Table 2: Size
10
-
10"
12
-
12"
14
-
14"
16
-
16"
18
-
18"
20
-
20"
24
-
24"
30
-
30"
36
-
36"
42
-
42"
48
-
48"
54
-
54"
60
-
60"
66
-
66"
72
-
72"
Table 3: Mounting
6
-
Standard Wall Brackets
Table 4: Construction
1
-
Standard
Table 5: FlowRange
1
-
Standard Range
2
-
High Range
Table 6: Readouts
0
-
None
Table 7: Accessories
0
-
None
1
-
Bolting Vanes
Model
Size
Mount
Const
Flow
Read
Access.
FM142
10
6
1
1
0
0
Size
(in)
Weight
(lbs)
B
C
D
E
F
G
Flow Range (GPM)
Standard
High
10.0
90.0
9.50
2.12
3.38
16.5
8.00
4.00
160 - 1600
360 - 2900
12.0
90.0
9.50
2.12
4.00
16.5
10.0
3.00
200 - 2000
400 - 3600
14.0
90.0
9.50
2.12
4.75
28.0
11.0
2.00
260 - 2600
520 - 4700
16.0
105
12.0
2.62
5.50
28.0
13.0
5.00
300 - 3800
600 - 6800
18.0
105
12.0
2.62
6.00
30.0
16.0
3.00
400 - 4600
800 - 8300
20.0
105
12.0
2.62
7.00
33.0
16.0
2.00
550 - 5600
1100 - 10000
24.0
105
12.0
2.62
8.00
36.0
16.0
1.00
800 - 8500
1600 - 15000
30.0
115
12.0
2.62
10.0
45.0
16.0
1.00
1200 - 12000
2400 - 21000
36.0
350
18.1
4.38
12.0
54.0
25.2
*
1500 - 16000
3000 - 29000
42.0
350
18.1
4.38
14.0
60.0
25.2
*
2100 - 22000
4200 - 40000
48.0
580
20.0
4.50
16.0
72.0
38.4
*
2700 - 28000
5400 - 50000
54.0
580
20.0
4.50
18.0
80.0
38.4
*
3400 - 35000
6800 - 63000
60.0
580
20.0
4.50
20.0
90.0
38.4
*
4200 - 42000
8400 - 75000
66.0
580
20.0
4.50
22.0
96.0
38.4
*
5000 - 50000
10000 - 90000
72.0
580
20.0
4.50
24.0
108
38.4
*
6000 - 60000
12000 - 100000
