Precision FlowTM Air Velocity Transmitter- Series PF
High Accuracy, 0.2 Second Response, 4 to 20 mA Output
Precision Flow Air Velocity Transmitters directly monitor gas mass flow rates of free air flows or single point flows in pipes, ducts and stacks. The 4-20 mA output signal is linearly proportional to gas mass velocity without additional compensation needed for pressure and temperature variations. The 304 SS insertion probe contains a velocity sensor to monitor mass flow and a temperature sensor to automatically correct for temperature changes. The probe is directly mounted to a NEMA 2 anodized aluminum enclosure. Stocked models are calibrated for air.
| Model Number | Range |
|---|---|
| PF1300202 PF1300204 PF1300206 |
0 to 2000 SFPM 0 to 4000 SFPM 0 to 6000 SFPM |
APPLICATIONS
Heating, ventilation and air conditioning (HVAC); hood and gas cabinet monitoring; cleanroom and cleanbench face velocity monitoring.
| Accuracy: Repeatability: Response Time: Gas Pressure: Gas Temperature: Supply Voltage: Output: Loop Resistance: Operating Temperature: Wetted Parts: Storage Temperature: Probe Dimensions: Electrical Connections: Weight: |
±1% FS, ±0.5% of reading over 32 to 122°F ( 0 to 50°C) and 5 to 31 psia (0.35 to 2 kg/cm2) ±0.2% of F.S. 0.2 seconds to 63% of final velocity value 150 psig (10 kg/cm2 G) maximum -40 to 250°F (-40 to 121°C) 15 to 18 VDC, 300 mA maximum 4 to 20 mA, linear 400 Ω maximum 32 to 122°F (0 to 50°C) 304 SS probe, glass coated sensor, epoxy 32 to 158°F (0 to 70°) ¼" (6.35 mm) O.D., 13" (33cm) length Four wire standard connector 0.0 lbs. (0.30 kg) |
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SUGGESTED SPECIFICATIONS
Air velocity transmitter shall be an insertion type mass flow meter with accuracy of ±1% FS, +0.5% of reading and a 0.2 second response time. Transmitter shall provide a 4-20 mA output signal linearly proportional to gas mass velocity. Insertion probe shall be constructed of 304 SS with a glass coated sensor assembly. Electronics shall be housed in a NEMA 2 enclosure. Air velocity transmitter shall be Dwyer Model No, PF _____.