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High Accuracy Rotameters


High Accuracy Rotameters - Capacity: .078 to 6.28 GPM for Water/.317 to 25.76 SCFM for Air | FL-1500A

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1 year warranty
  • ±2% Full Scale Accuracy
  • ±½% Full Scale Repeatability
  • Glass and Stainless Steel Construction for Broad Media Compatibility
  • Correlation Equations for Use with Many Fluids
  • Side Plate Construction
  • 250 mm (9.85") Scale
  • 10 to 100% of Flow Scale
  • Shielded for Use in Pressurized Systems
  • Vertical Mount Only
Variable Area Flow Meters, Rotameters & Switches - View related products


OMEGA FL-1500 flow meters 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.

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
Side Plate: Aluminum shields; acrylic plastic shields, front and back
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)
Max Temperature: 121°C (250°F)
Accuracy: ±2% full scale
Repeatability: ±0.5% full scale
Place Order(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/ Desc.
Quick Ship
Availability: 10 weeks
0.317-3.17 SCFM, 0.078-0.78 GPM
Quick Ship
Availability: In Stock
0.588-5.88 SCFM, 0.145-1.45 GPM
Quick Ship
Click to expand/minimize a list of what others bought with theFL-1503A
Availability: 10 weeks
1.045-10.45 SCFM, 0.253-2.53 GPM
Quick Ship
Availability: 10 weeks
2.576-25.76 SCFM, 0.628-6.28 GPM
Quick Ship
Availability: 10 weeks
2.576-25.76 SCFM, 0.628-6.28 GPM, with brass ends
All dollar amounts on this site are shown in Canadian currency. Note: Comes complete with operator's manual.

For models with brass end fittings, add suffix "-B" to the model number, subtract $150 from price.

Ordering Example: (1) FL-1503A Rotameter :1.045-10.45 SCFM, .253-2.53 GPM , CAD1,530.00

Part Number Builder

Build Your Part Number Below
Option Descriptions:

(1) Range select from:
1 for 0.317-3.17 SCFM air/0.078-0.78 GPM water
2 for 0.588-5.88 SCFM air/0.145-1.45 GPM water
3 for 1.045-10.45 SCFM air/0.253-2.53 GPM water
4 for 2.576-25.76 SCFM air/0.628-6.28 GPM water

(2) End Fittings select from:
Nothing(leave field blank) for 316 SS (standard)
-B for Brass (optional)
Note: All combinations may not be valid, check spec sheet for valid part numbers.