Description
Dwyer Series PFT Paddlewheel Flow Sensor
Non-Magnetic Sensing, Adjustable for 1-1/2 to 40″ (38.1 to 1016 mm) Pipe, Pulse or 4 to 20 mA
The Series PFT Insertion Paddlewheel Flowmeters are used to monitor liquid flow rates in pipes from 1-1/2 to 40″ and is available in brass or 316 SS body. The unit outputs a frequency proportional pulsed or 4 to 20 mA output. The pulse models are a square wave output signal with frequency proportional to the flow velocity and the 4 to 20 mA models have a linear output of the velocity with 4 mA equal to 0 ft/s and 20 mA equal to 25 ft/s.
Features:
- Long product life even in applications with particulate due to bearings and shaft that offer excellent wear protection
- Use in irrigation applications with weatherproof and submersible ratings
- Save time and inventory with one unit that is adjustable over a large pipe size range
- Application versatility with a variety of wetted material selections
- Reduce need for additional external components with integral 4-20 mA output
- Eliminate concerns regarding magnetic material in flow due to sensor technology, which uses inductive sensing and no magnets
Applications:
- Irrigation
- Ground water remediation
- Cooling systems
- Pump protection
- Leak detection
- Filtration systems
Specifications:
- Service: Water-based fluids
- Range: 1.2 to 25 ft/s (0.37 to 7.62 m/s)
- Wetted Materials: Body and fitting: Brass or 316 SS; Fitting O-ring: FKM standard, silicone or Buna-N optional; Impeller: 316 SS; Shaft: tungsten carbide standard or 316 SS optional; Bearing: PTFE standard
- Linearity: ±1.0% of FS
- Repeatability: ±0.5% of FS
- Temperature Limits: -40 to 212°F (-40 to 100°C)Pressure Limits: 400 psig (27.6 bar) @ 100°F (37.8°C), 325 psig (22.4 bar) @ 212°F (100°C)
- Process Connection: 1-1/2″ NPT male standard, 2″ NPT male optional
- Output: > Pulse: NPN open collector with square wave output, rated 60 V @ 50 mA maximum.
- Frequency: 3.2 to 200 Hz.
- Pulse Width: 2.5 msec ±25% 4 to 20 mA: 4 mA is 0 ft/s, 20 mA is 25 ft/s
- Power Requirement: 10 to 35 VDC
- Power Consumption: 40 mA (max)
- Electrical Connection: 22 AWG shielded UL type PTLC rated 105°C, 20′ (6.1 m) long with cable gland. Can be extended up to 2000′ (609 m) with similar cable. Optional UL listed burial rated cable
- Enclosure Rating: NEMA 6P (IP67) *Brass units IP67 only.
- Housing Materials: Brass or 316 SS
- Weight: 3 lb. (1.36 kg)
- Agency Approvals: CE
