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 to 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. Popular models are calibrated for air.

APPLICATIONS
Heating, ventilation and air conditioning (HVAC); hood and gas cabinet monitoring; cleanroom and cleanbench face velocity monitoring.

SPECIFICATIONS
Service: Air, nitrogen, or non-corrosive, non-combustible gases.
Wetted Materials: 304 SS probe, glass coated sensor, epoxy.
Accuracy: ±1% FS, ±0.5% of reading over 32 to 122°F (0 to 50°C) and 5 to 30 psia (0.35 to 2 kg/cm²).
Repeatability: 0.2% F.S.
Temperature Limits: -40 to 250°F (-40 to 121°C).
Pressure Limits: 150 psig (10 kg/cm² G) max.
Power Requirements: 15 to 18 VDC, 300 mA max.
Output: 4 to 20 mA, linear.
Response Time: 0.2 seconds to 63% of final velocity value.
Loop Resistance: 400 O max.
Electrical Connection: Four wire standard connector.
Probe Dimensions: 1/4" (6.35 mm) OD, 13" (33 cm) length.
Operating Temperature: 32 to 122°F ( 0 to 50°C).
Weight: 0.7 lb (0.30 kg).