Page 1
IN-LINE PNEUMATIC FLOWMETERS
FLMG Series
Starts at
$
199
⻬ Suitable for Monitoring
Most Pneumatic or
Compressed Gas Systems
⻬ Flow Rates from
1.2 to 900 SCFM @ 100 psi
⻬ High Pressure
to 600 psi—Brass,
Aluminum; 1000 psi—
Stainless Steel
⻬ High Temperature
to 116°C (240°F) Standard,
204 or 316°C (400 or 600°F)
Optional
⻬ Mounts in Any Position
⻬ Relay Alarms and
Analog Outputs Optional
The FLMG flowmeters feature
rugged construction, easy
installation, and direct-reading flow
rates of air. The units are calibrated
at 100 psi pressure, suitable for
most compressed pneumatic
applications.
The spring-and-piston type
assembly enables these flowmeters
to be mounted in any position.
The FLMG models with optional
analog output (-MA) are typically
used to transmit a signal
proportional to the flow rate to a
process controller, a PLC, a
recorder, or a panel-mount display.
With the -MA option, the user can
choose between reading a
0 to 2000 Hz square-wave pulse, a
0 to 5 Vdc analog signal, or a
2-wire 4 to 20 mA analog signal by
connecting the appropriate pins.
SPECIFICATIONS
Measuring Accuracy: ±2.5%
FS in the center third of the
measuring range; ±4% FS over
the entire scale range
Repeatability: ±1% FS
Flow Measuring Range:
1.2 to 900 SCFM
FLMG-14012AL, $199,
shown actual size.
Maximum Operating Pressure:
Aluminum and Brass Monitors:
40 bar (600 psig)
Stainless Steel Monitors: 70 bar
(1000 psig) up to 116°C (240°F)
Maximum Operating Temperature:
116°C (240°F)
Note: For options “-HT” and “-UHT”, see
high-temperature graph at omega.com/flmw
Pressure Differential:
Visit omega.com/flmw for graphs
Standard Calibration Fluids:
Air @ 21°C (70°F), 1.0 sg and 6.8 bar
(100 psig)
B-X
FLMG-38050BR, $245,
shown actual size.
Relay (Optional): 1 or 2 form “C”
relays, rated 10 A, 125 or 250 Vac or
1
/
4 A, 250 Vdc
Mechanical Life:
6
>10
cycles
Analog Output (Optional):
Supply voltage 12 to 35 Vdc,
field selectable for 0 to 5 Vdc
(100 W minimum load), 0 to 2000 Hz
square-wave pulse or 4 to 20 mA
R
= 50 (Vs - 12)
max
(V
= supply voltage DC)
s
Page 2
Materials of Construction (Wetted Components)
Description Aluminum Brass Stainless Steel
High-pressure casing, Aluminum Brass 304 SS
end ports and tapered shaft
Seals Buna (standard), EPR, Buna (standard), EPR, FKM with PTFE backup (standard),
FKM or Perfluoroelastomer FKM or Perfluoroelastomer Buna, EPR or Perfluoroelastomer
Transfer magnet PTFE-coated Alnico PTFE-coated Alnico PTFE-coated Alnico
Floating orifice disk Stainless steel Stainless steel Stainless steel
All other internal parts Stainless steel Stainless steel Stainless steel
Materials of Construction (Non-Wetted Components)
Description Aluminum Brass Stainless Steel
Window tube Polycarbonate (standard),
Window seals Buna (standard), PTFE Buna (standard), PTFE Buna (standard) PTFE
Pyrex
®
Polycarbonate (standard),
Pyrex
Polycarbonate (standard)
Pyrex
B
1
" Port: 1
⁄
2
1
" Port: 3
⁄
2
1
⁄4 to 11⁄2 FNPT
7
" OD x 6
⁄
8
3
" OD x 7
⁄
8
1
OD x 10
⁄
2
9
" length
⁄
16
5
" length
⁄
32
1
⁄
8
" length
Port Sizes
Installation
Dimensions
1
to
⁄
4
3
to 1" Port: 2
⁄
4
1
1
to 1
⁄
4
Note: Minimum flow rate = 10% of maximum.
MOST POPULAR
3
NPT $285
⁄
4
3
NPT 285
⁄
4
3
NPT 285
⁄
4
3
NPT 285
⁄
4
1
⁄
2" size units, or with UHT,
1
1
⁄
⁄
4 to
2" sizes
3
⁄
4 to 1" sizes
1
⁄
4" size
Air Flowmeters - 1⁄4 to 1⁄2 NPT Sizes
Model No. SCFM Size Price
FLMG-14012(*) 12
FLMG-14022(*) 23
FLMG-14050(*) 50
FLMG-14100(*) 100
FLMG-38012(*) 12
FLMG-38022(*) 23
FLMG-38050(*) 50
FLMG-38100(*) 100
FLMG-12012(*) 12
FLMG-12022(*) 23
FLMG-12050(*) 50
FLMG-12100(*) 100
(*) Specify “AL” for aluminum, standard, “BR” for brass, add $46,
and “SS” for stainless steel, add $356.
Max Connection
1
NPT $199
⁄
4
1
NPT 199
⁄
4
1
NPT 199
⁄
4
1
NPT 199
⁄
4
3
NPT 199
⁄
8
3
NPT 199
⁄
8
3
NPT 199
⁄
8
3
NPT 199
⁄
8
1
NPT 199
⁄
2
1
NPT 199
⁄
2
1
NPT 199
⁄
2
1
NPT 199
⁄
2
Air Flowmeters - 11⁄4 to 11⁄2 NPT Sizes
Model No. SCFM Size Price
FLMG-1140450(*) 470 1
FLMG-1141000(*) 900 1
FLMG-1120450(*) 470 1
FLMG-1121000(*) 900 1
(*) Specify “AL” for aluminum, standard, “BR” for brass, add $415,
and “SS” for stainless steel, add $705.
Max Connection
1
NPT $735
⁄
4
1
NPT 735
⁄
4
1
NPT 735
⁄
2
1
NPT 735
⁄
2
Option Pricing Includes Flowmeter
(Only One Option Per Flowmeter)
Air Flowmeters -
3
⁄4 to 1 NPT Sizes
MODELS HIGHLIGHTED!
Max Connection
Model No. SCFM Size Price
FLMG-34050(*) 60
FLMG-34100(*) 100
FLMG-34150(*) 150
FLMG-34260(*) 330
FLMG-10050(*) 60 1 NPT 285
FLMG-10100(*) 100 1 NPT 285
FLMG-10150(*) 150 1 NPT 285
FLMG-10260(*) 330 1 NPT 285
(*) Specify “AL” for aluminum, standard, “BR” for brass, add $95,
and “SS” for stainless steel, add $435.
Options
Order
Suffix Description
-HT High temperatures, 204°C
-UHT Ultra high temperatures,
-R1 Single SPDT relay,
-R2 Dual SPDT relays,
-MA 4 to 20 mA ouput
-BDF Bidirectional flow (not available
Note: Only one
option may be
ordered with each unit.
(400°F) max
315°C (600°F) max
10 A @ 220 Vac
10 A @ 220 Vac
(12 to 35 Vdc powered)
with 1
R1, R2, or MA options)
$65 additional for
$95 additional for
$215 additional for 1
Port Aluminum Prices Brass Prices Stainless Steel Prices
Size -HT -UHT -R1 -R2 -MA -HT -UHT -R1 -R2 -MA -HT -UHT -R1 -R2 -MA
1
⁄4 to 1⁄2" $305 $558 $420 $470 $720 $370 $650 $455 $505 $760 $678 $942 $705 $755 $959
3
⁄4 to 1" 425 795 508 558 773 495 885 540 590 832 780 1300 927 977 1118
11⁄4 to 11⁄2" 855 1955 920 970 1178 1195 2199 1290 1340 1590 1565 2890 1810 1860 2086
Comes complete with operator’s manual.
Ordering Examples: FLMG-10100BR-MA, 1" brass air flowmeter, 10 to 100 SCFM, 4 to 20 mA output, $832.
FLMG-14012BR,
1
⁄4 NPT brass air flowmeter, 1.2 to 12 SCFM, $245.
B-X
Page 3
PRESSURE DROP GRAPHS
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 5 10 15 20 25 30
0 50 100 150 200 250 300
2
4
6
8
10
12
14
Water
Oil
Air
Flow (G PM)
Flow (S CFM )
Pressure (PSIG)
0 2 4 6 8 10
0 25 50 75 100
0
1
2
3
4
5
6
7
8
9
10
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 2 4 6 8 10 12 14
0 25 50 75 100
0
2
4
6
8
10
12
14
16
18
20
Water
Oil
Air
Flow (G PM)
Flow(SCFM )
Pressure (PSIG)
0 1 2
0 5 10 15 20
0
1
2
3
4
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 1 2 3 4 5
0 10 20 30 40 50
0
1
2
3
4
5
6
7
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 1 2 3 4 5 6 7 8 9 10
0 25 50 75 100
1
2
3
4
5
6
7
8
9
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 5 10 15
0 25 50 75 100 125 150
1
2
3
4
5
6
7
8
9
10
11
12
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 5 10 15 20
0 50 100 150 200
1
2
3
4
5
6
7
Water
Oil
Air
Flow(GPM )
Flow (S CFM )
Pressure (PSIG)
0 1 2 3 4 5
0 10 20 30 40 50
0
1
2
3
4
5
6
7
Water
Oil
Air
Flow (G PM)
Flow(SCFM )
Pressure (PSIG)
0 0.2 0.4 0.6 0.8 1
0 2 4 6 8 10 12
0
1
2
3
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0 5 10 15 20
0
1
2
3
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 5 10 15 20 25
0 50 100 150 200 250
1
2
3
4
5
6
7
8
9
10
Water
Oil
Air
FLMG, FLMW, and FLMH
1
/
4" to
1
/
2"
1
/
4" to
1
1
/
2"
/
4" to
1
/
2"
1
/
4" to
3
/
4" to 1"
1
/
2"
1
/
4" to
3
/
4" to 1"
1
/
2"
3
/
4" to 1"
3
/
4" to 1"
3
/
4" to 1"
B-X
3
/
4" to 1"
3
/
4" to 1"
Page 4
B
Flow (G PM)
Flow (S CFM )
Pressure (PSIG)
0 5 10 15 20 25 30 35 40
0 100 200 300 400
2
4
6
8
10
12
14
16
Water
Oil
Air
Flow(GPM )
Flow (S CFM )
Pressure (PSIG)
0 10 20 30 40 50
0 100 200 300 400 50 0
5
10
15
20
25
Water
Oil
Air
Flow (G PM)
Flow(SCFM )
Pressure (PSIG)
0 5 10 15 20 25
0 100 200 300
0
1
2
3
4
5
6
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 10 20 30 40 50
0 100 200 300 400 50 0
0
1
2
3
4
5
6
7
8
9
10
11
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 10 20 30 40 50 60 70
0 100 200 300 400 500 600 700
0
2
4
6
8
10
12
14
16
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 25 50 75 100 125 150
0 250 500 750 1000 1250
0
5
10
15
20
25
30
35
40
Water
Oil
Air
Flow(GPM )
Flow(SCFM )
Pressure (PSIG)
0 25 50 75 100
0 250 500 750
0
5
10
15
20
25
Water
Oil
Air
1-1/
3
/
4" to 1"
4" to 1-
1
/
2" 1-
ULTRA HIGH TEMPERATURE UNITS
3
/
4" to 1" 1-
1
/
4" to 1-
1
/
2" 1-
1
/
4" to 1-
1
/
4" to 1-
1
/
2"
1
/
2"
1-1/
4" to 1-
1
/
2"
B-X
Page 5
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