Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
G01L7/24—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges involving balances in the form of rings partly filled with liquid
Verfahren und Vorrichtung zur Messung der Menge eines mittels Luft oder eines anderen Fluidums gefoerderten staubfoermigen Stoffs, insbesondere von Kohlenstaub
Windgeschwindigkeitsfernzeiger, bei welchem ein vom Winde und der Temperatur und einvon der Temperatur allein beeinflusster Widerstand in je einem Stromkreis Strom-aendeungen verursacht, deren Differenz eine Funktion der Geschwindigkeit darstellt