Omega Products FL-1501A User Manual

ECONOMICAL HIGH ACCURACY
ROTAMETERS

CAPACITIES: 0.078 to 6.28 GPM for Water,

0.317 to 25.76 SCFM for Air

“B” OUTLET
CONN., NPT

FL-1500A Series

U ±2% Full Scale Accuracy

1

U ±

⁄2% Full Scale

Repeatability

U Glass and Stainless

Steel Construction
for Broad Media
Compatibility

U Correlation Equations for

Use with Many Fluids

U Side Plate Construction
U 250 mm (9.85") Scale
U 10 to 100% of Flow Scale
U Shielded for Use in

Pressurized Systems

U Vertical Mount Only

OMEGA® FL-1500 flowmeters
combine 2% accuracy and side
plate construction at an economical
price. These flowmeters feature
glass and 316 stainless steel
construction, with aluminum side
plates and acrylic plastic shields.
The float design provides high
immunity to viscosity variation,
and the NPT thread connections
provide easy installation into
industrial and laboratory systems.

A

SCALE
LENGTH

Maximum Pressure:

FL-1501 and FL-1502: 20.68 bar
(300 psig)

FL-1503: 12.06 bar (175 psig)
FL-1504: 6.9 bar (100 psig)

Maximum Temperature: 121°C (250°F)
Accuracy: ±2% full scale
Repeatability: ±0.5% full scale

Dimensions: mm (inch)

Model No. A B, NPT C D
FL-1501A, 1502A 430 (16.94) ¹⁄₂ 60 (2.38) 64 (2.5)
FL-1503A 430 (16.94) ³⁄₄ 60 (2.38) 64 (2.5)
FL-1504A 432 (17) 1 60 (2.38) 64 (2.5)

C

“B” INLET
CONN., NPT

For correlation

with other fluids,

visit omega.com/

techref_sect_b

D

FL-1501A-B, shown

with optional brass

end fittings (316 SS

standard), smaller

than actual size.

SPECIFICATIONS

Scale: Fused on metering tube,

10 to 100% of flow scale

Metering Tube: Borosilicate glass
Float and Float Stops:

316 Stainless Steel
End Fittings:

Standard: 316 Stainless Steel
Optional: Brass

O-Rings: FKM-A
Structural:

Side Plate: Aluminum shields;

acrylic plastic shields, front and back

To Order Visit omega.com/fl1500 for Pricing and Details

Range Range Pressure Drop
Model No. Air (SCFM) Water (GPM) (H2O)

FL-1501A 0.317 to 3.17 0.078 to 0.78 4"
FL-1502A 0.588 to 5.88 0.145 to 1.45 11"
FL-1503A 1.045 to 10.45 0.253 to 2.53 7"
FL-1504A 2.576 to 25.76 0.628 to 6.28 13"

Comes complete with operator’s manual.
For models with brass end fittings, add suffix “-B” to model number, consult flow engineering.
Ordering Examples: FL-1503A-B, rotameter with brass end fitting, 1.045 to 10.45 SCFM,

0.253 to 2.53 GPM.
FL-1501A, 316 SS end fitting, 0.317 to 3.17 SCFM, 0.078 to 0.78 GPM.

B-45