Hedland H271A-020 Flow Meter
This Variable Area type Flow Meter utilizes a spring and piston type assembly. Differential pressure caused by flow between the metering cone and the piston/magnet assembly moves the piston against a retaining spring.
Features
Magnetically coupled indicator ring moves along a calibrated scale for direct flow readings
Flow ranges: 0.5 to 5.0 scfm (0.2 to 2.2 l/s) up to 200 to 2200 scfm (75 to 1130 l/s)
Construction: Aluminum, brass and T303 stainless steel
Sizes: 1/4 to 3 inch ports
Ports: SAE, NPTF and BSPP
360° rotatable guard/scale
Easier to read linear scale
No electrical connections
Mount in any position
Good viscosity stability
Simple to install and maintain
Low pressure drop
No flow straighteners or special piping required
Relatively insensitive to shock and vibration
Hedland Variable Area Flow Meter Specifications
| Accuracy | ±5% of full scale |
| Repeatability | ±1% |
| Pressure Rating | 325 PSI (22.4 bar) Maximum Meters with Type 1 PVC fitting subject to normal PVC system ratings |
| Temperature Range | 32 to 250°F (0 to 121°C) 32 to 140°F (0 to 60°C) for meters with Type 1 PVC fittings |
| Fittings/Threads | NPT ANSI/ASME B1.20.1 BSPT ISOR7 BSPP ISO228 |
| Wetted Materials | |
| Body | 1/2", 3/4" & 1": sizes Polysulfone or Radel® 1-1/2" & 2": sizes Radel® |
| Piston | Polysulfone |
| Cone | 1/2", 3.4" & 1" sizes: Polysulfone or Radel® 1-1/2" & 2" sizes Polysulfone |
| Spring | T300 Stainless Steel |
| Retaining Rings | PH15-7MO Stainless Steel |
| Seals | Buna-N |
| Indicator Ring | Buna-N |
| Magnet | Strontium Ferrite (switching units only) |
| Fittings | C360 Brass, PVC or T303 Stainless Steel |
| Non-Wetted Materials | |
| Limit Indicator | Polypropylene |
| Scale | Polyester |
| Calibration Fluid | |
| Oil | 0.876 specific gravity, 32 cSt viscosity |
| Water | 1.0 specific gravity, 1.0 cSt viscosity |
Click here for complete specifications on the Hedland H271A-020