IN-LINE FLOWMETERS
For Use with Water and Air
FL-500 Series
Optional
†
FL-510, shown smaller
than actual size.
FL-530, shown smaller
than actual size.
U Direct Reading in GPM,
LPM, SCFM, and SLPM
U Scales for Air and Water
U Fluid is Always in View
U Mount in Any Position
U Easy to Clean and
Maintain
U ±5% FS Accuracy
The FL-500 Series in-line
flowmeters feature rugged
construction, easy installation,
and direct-reading flow rates for
water and air at atmospheric and
90 psi pressures.
For added versatility, the FL-500
Series flowmeters can be ordered
with electric proximity switches
(order separately, see next page)
to signal specific flow rates.
Settings are easily adjustable with
a screwdriver.
FL-510, shown
larger than actual size.
SPECIFICATIONS
Accuracy: ±5% FS
Construction:
Flow Tube and Float: PVC
Internal Wetted Parts:
316 SS end fittings
Brass, Female NPT Seals: FKM
Liquid Service: 200 psig @
21°C (70°F)
Gas Service: 100 psig @ 21°C (70°F)
Maximum Temperature:
66°C (150°F) @ 25 psig
Pressure Drop: 4 psig FS
Dimensions: 177.8 mm (7") long
FL-505 through FL-515:
50.8 mm (2") Dia.
FL-530 through FL-550:
76.2 mm (3") Dia.
To Order Visit omega.com/fl500 for Pricing and Details
Supplied Standard
Female NPT Water 90 psi Air
Model No. End Fittings (Brass) LPM (GPM) (SCFM)
FL-505 1 FNPT 2 to 20 (0.5 to 5) 5 to 50
FL-510 1 FNPT 4 to 38 (1 to 10) 15 to 90
FL-515 1 FNPT 6 to 55 (1.5 to 15) 15 to 135
FL-530 1
FL-540 1
FL-550 1
Comes complete with operator’s manual.
For polysulfone body and float, add suffix “-PLSF” to model number, consult Flow Engineering
for price.
†
For NIST traceable certificate, for water only, add suffix “-NIST” to model number for
additional cost.
Ordering Examples: FL-515, 1 FNPT flowmeter, 15 GPM, 135 SCFM.
FL-550, 1
1
FNPT flowmeter, 50 GPM, 500 SCFM max.
⁄
2
1
FNPT 11 to 110 (3 to 30) 30 to 300
⁄
2
1
FNPT 15 to 150 (4 to 40) 40 to 400
⁄
2
1
FNPT 20 to 200 (5 to 50) 50 to 500
⁄
2
B-51
Scales—Metric Equivalent