Series PFS Smart Air Velocity Transmitter measures mass flow rate of air, nitrogen, or other non-combustible gases and delivers a linear 4 to 20 mA output signal. The smart electronics permit field configuration of flow range and full validation of calibration. Compensate for flow profile variations or specific application conditions with the K-Factor correction feature. Series PFS include user-adjustable high and low alarm outputs and adjustable time response to track flow fluctuations. View flow rate on units with built-in display. All parameters can be quickly programmed via three push buttons or RS-232 and the Windows™ 95 based software (sold separately).

SPECIFICATIONS
Service: Air, nitrogen, or non-corrosive, non-combustible gases.
Wetted Materials: 304 SS probe, glass filled polyester sensor, epoxy, and ceramic.
Accuracy: ±1% FS.
Repeatability: ±0.2% full scale.
Temperature Limits: -40 to 250°F (-40 to 120°C).
Pressure Limits: 150 psig (10 bar) max.
Power Requirements: 18 to 30 VDC, 625 mA max.
Output: 4 to 20 mA linear, optical/galvanic isolated; proportional to point mass flow rate or velocity.
Zero and Span Adjustment: 50 to 100% FS.
Response Time: 0.1 seconds to 63% of final velocity value.
Loop Resistance: 700 O max.
Relay Rating: Maximum 42 VAC/VDC, 140 mA.
Electrical Connection: 1/2" female NPT.
Enclosure Rating: NEMA 4X (IP65) powder-coated cast aluminum.
Mounting: 3/8" tube compression fitting (not included).
Correction Factor Setting: 0.5 to 2.
Computer Requirements: IBM compatible 386 or above and Windows™ 95 or later with minimum 8 mB RAM (16 mB preferred) and one serial port.
Weight: 0.7 lb (0.30 kg).
Agency Approvals: CE.

ACCESSORIES -- See "Ordering" page
No. PFS60 - Windows® Software and Connection Cable