摘要:
Die Erfindung betrifft eine Vorrichtung zum Messen des Füllstands einer in einem Behälter aufgenommenen Flüssigkeit mit einem Schwimmkörper (8) und einer in einem Gehäuse (1) untergebrachten Einrichtung zur Messung eines vertikalen Abstands des Schwimmkörpers (8) vom Gehäuse (1), wobei die Einrichtung zur Messung einen in Abhängigkeit des vertikalen Abstands sich einstellenden, mit einem koaxial angeordneten Permanentmagneten versehenen Drehkörper umfasst. Zur Vereinfachung der Vorrichtung wird erfindungsgemäß vorgeschlagen, dass am Gehäuse (1) ein im Wirkbereich eines vom Permanentmagneten (10) erzeugten Magnetfelds angebrachtes, statisches Mittel zur Messung der Winkelstellung des Magnetfelds vorgesehen ist.
摘要:
Für ein Hydrometrie-Meßgerät wird ein Winkelkodierer vorgeschlagen, welcher im Abstand von der Drehachse eines Rotors (17) mehrere Paare in Umfangsrichtung des Rotors (17) um gleiche Winkelabstände gegeneinander versetzte, abwechselnd gegensinnig gepolte Permanentmagnete (19) trägt. Der Rotor ist außerhalb eines Gehäuses (13) angeordnet, welches in seinem Inneren die Magnetdrahtsensoren (25) und eine deren Impulse zählende Zählschaltung abgedichtet umschließt. Die Magnetdrahtsensoren (25) sprechen durch die Gehäusewand hindurch auf die Permanentmagnete (19) an. Ein Winkelkodierer dieser Art hat eine sehr geringe Stromaufnahme und schützt seine elektronischen Komponenten dauerhaft gegen Korrosion.
摘要:
The invention encompasses an electromechanical fill level measurement unit, comprising a float or displacement element which is connected by means of a wire at least to an outer drum such that the wire can be unwound, an outer drum with an outer magnet ring, an inner drum with an inner magnet ring, and electromagnetic measurement elements which determine magnetic field displacement between the inner and outer magnet rings and output a measurement value, a measurement shaft to which the inner drum is mechanically fixedly connected; a servo motor is provided which has a drive shaft which is coupled via a gearing to the measurement shaft, which servo motor imparts a follow-up movement to the measurement shaft as a function of a control signal determined from the differential value of the measurement elements, such that, as a result of the relative movement between the outer and inner drum generated by a change in the liquid level to be measured, the differential value is returned to zero and, from a follow-up movement, the present fill level measurement value is determined. The invention provides that sensor electronics are arranged on the measurement shaft within the inner drum, and that a radial rotary transformer is formed on the measurement shaft, which rotary transformer transmits at least the control signals from the sensor electronics to the main electronics and supplies at least the sensor electronics with the required energy.
摘要:
Die Erfindung betrifft eine Vorrichtung zum Messen des Füllstands einer in einem Behälter aufgenommenen Flüssigkeit mit einem Schwimmkörper (8) und einer in einem Gehäuse (1) untergebrachten Einrichtung zur Messung eines vertikalen Abstands des Schwimmkörpers (8) vom Gehäuse (1), wobei die Einrichtung zur Messung einen in Abhängigkeit des vertikalen Abstands sich einstellenden, mit einem koaxial angeordneten Permanentmagneten versehenen Drehkörper umfasst. Zur Vereinfachung der Vorrichtung wird erfindungsgemäß vorgeschlagen, dass am Gehäuse (1) ein im Wirkbereich eines vom Permanentmagneten (10) erzeugten Magnetfelds angebrachtes, statisches Mittel zur Messung der Winkelstellung des Magnetfelds vorgesehen ist.
摘要:
System for the transmission of data in a measuring instrument in which a measuring device is being introduced in a medium in order to measure specific properties thereof and with which these measuring data are being transmitted, characterized in that it primarily consists of the combination of an autonomous and active measuring device (3); a freely movable electrically conductive element (4) with which the measuring device (3) is connected; a signal receiving unit (9) where through or along which, the electrically conductive element (4), without making physical or galvanic contact, can move freely; a signal processing unit '12) which is electrically connected with the signal receiving unit (9) and a direct or indirect electric connection between the electrically conductive and freely movable element (4) and the medium to be tested.
摘要:
The present invention provides a non-contact pulley liquid level sensor, comprising a float (12) capable of floating up and down and floating on a liquid surface, a tether (11), at least one pulley (15, 16), a permanent magnet (105) and a magnetic field angle sensor (103), wherein two ends of the tether (11) are tied to the float (12), and are wound on the top end pulley (15) and the optional bottom end pulley (16), the permanent magnet (105) is installed on one side of the top end pulley (15) and rotates together with the top end pulley (15) under the effect of a friction torque produced by the tether (11). The magnetic field angle sensor (103) detects a magnetic field produced by the permanent magnet (105) and converts a rotation angle of the magnetic field into a voltage signal, then according to a relationship between the rotation angle of the permanent magnet (105) and a floating distance of the float (12), a liquid level height is calculated via the output voltage signal. A gear can also be used to calibrate the operating range and accuracy of the liquid level sensor. The liquid level sensor has the advantages of simple design, wide measurement range, easiness in sealing and the like.
摘要:
A level sensing system for sensing the level of liquid in a container (19) includes a magnetic member (12) arranged for movement relative to a pneumatic switch (18) operated by the presence or absence of a magnetic field, a spring (13) acting on the magnetic member (12) and urging it towards a first operative position, and a weight (16) suspended from the magnetic member (12), the weight being positioned, in use, within the liquid in the container (19) such that, when the level of liquid in the container (19) falls to a predetermined level, the magnetic member (12) is caused to move from its first operative position ( Figure 1 ) into a second operative position ( Figure 2 ).
摘要:
An apparatus for momtoπng a height of liquid in a liquid storage tank is provided, the apparatus includes a first rotatable element rotatable in response to a change of a liquid level in a liquid storage tank and including a first magnetic component having a first magnetic field, and a second rotatable element rotatable in response to the rotation of the first rotatable element and including a second magnetic component having a second magnetic field The apparatus further includes a sensor assembly which includes a first sensor component located within range of the first magnetic field and structured to be effective in providing a first signal indicative of a position of the first magnetic component, and a second sensor component located within range of the second magnetic field and structured to be effective in providing a second signal indicative of a position of the second magnetic component