Instrumentation
	Air Velocity	Transmitters
	Smart Air Velocity Transmitter    PFS				Air Velocity Transmitter         Series 641
		Field Rangeable, 0.1 Second				16field selectable ranges in FPM/MPS.
		Response, ±0.2% Repeatability .				This transmitter uses a heated mass
		PFS measures mass flow rate of air,				flow sensor which allows for precise
		nitrogen, or other non-combustible				velocity measurements at various
		gases and delivers a linear 4 - 20mA				flow rates and temperatures.
		output signal. The smart electronics				APPLICATIONS: Exhaust Stack Flow
		permit field configuration of flow				Monitoring; Air Control in Drying
		range and full validation of calibration.				Processes; HVAC Air Velocity
		Windows™ 95 based software.				Measurements.
	Precision Flow™ Air Velocity Transmitter  PF				Air Velocity Transmitter            PFH
		PF directly monitor gas mass flow				0.2 Second Response, ±0.2%
		rates of free air flows or single point				Repeatability .
		flows in pipes, ducts and stacks.				PFH measure mass flow rate of air,
		The 4-20 mA output signal is linearly				nitrogen, or other non-combustible
		proportional to gas mass velocity				gases and delivers a 4-20 mA output
		without additional compensation				signal directly proportional to gas
		needed for pressure and temperature				mass velocity. Easily install into pipes,
		variations.The 304 SS insertion probe				ducts, or external flow streams for
		contains a velocity sensor .				monitoring air flow in ventilation syst.