Flow Meters
PF Series — Rotameter
Plastic variable area flow meter · Water and air scales
Find a meter for your flow range, then choose its materials and connections. The float and tube code follow your selected scale automatically.
Find your PF meter
PF SeriesTechnical data
Application and operating limits
- Service
- Water, wastewater, air, gases and chemical process systems
- Accuracy
- ±3% of full scale
- Working pressure
- Up to 1.2 MPa (12 bar) at 25°C; temperature derating applies
- PC tube temperature
- −10 to 60°C; maximum 6 bar at 60°C
- PSU tube temperature
- −10 to 110°C; maximum 1 bar at 100°C
Confirm the pressure and temperature combination and fluid compatibility for the selected assembly.
Materials and scale options
- Flow tube
- Polysulfone (PSU) or polycarbonate (PC)
- Process connections
- PVC, PVDF or stainless steel 316
- Union nuts
- PVC
- O-rings
- Viton
- Stop bars
- PVDF
- Range-table floats
- Teflon or stainless steel 316, fixed by the chosen scale
Other fluids require a suitability and calibration review. Gas scales use normal or standard volume units as listed.
Dimensions and construction
| Body | Connection sizes | ØA (mm) | L (mm) | L1 (mm) |
|---|---|---|---|---|
| A | ½ in | 41 | 233 | 172 |
| B | ½ in | 52 | 346 | 263 |
| C | ¾ in | 74 | 368 | 272 |
| D | 1 or 1½ in | 79 | 370 | 272 |
| E | 1½ or 2 in | 99 | 385 | 262 |
| F | 2 in | 135 | 415 | 250 |
Dimensions follow the PDF body table. Confirm final connection dimensions when requesting a flange or special arrangement.
Select your PF meter
Start with the flow you need to measure. We’ll show matching scales and the meter size for each.
Specifications are general selection guidance. Confirm materials, connection standards, operating temperature and pressure with Sightflow before placing an order.