1
Johannes M E van den Burg: Flowmeter for gases. Mijnhardt, Michael N Meller, April 2, 1991: US05003828 (7 worldwide citation)

A flowmeter for gases has a rotor between two stators which consist of deflection blades, and an otpical system for detecting the rotation of the rotor and converting it into an electrical output signal. Each of the detector blades of the stators has a curved course between an inflow edge, where the ...


2
Johannes M E van den Burg: Process and device for the continuous analysis of the composition of gases. Mijnhardt, Michael N Meller, September 1, 1992: US05143695 (4 worldwide citation)

Process for the continuous analysis of the composition of gases, by means of a measuring head for determining the flow rate and analysis equipment which is placed a distance away from the measuring head and is connected thereto by a sample line, a calibration gas being fed to the sample line at the ...