Abstract:
A field device detects the presence of terminal leakage between a first terminal and a second terminal in the terminal block area of the field device using a voltage variation ratio that is based on variations in a terminal voltage located across output terminals of a field device and variations in a current regulation voltage located within a current regulation circuit. Preferable, the field device measures an initial voltage variation ratio κ 0 and a subsequent voltage variation ratio κ 0 . Based on the initial voltage variation ratio κ 0 and the subsequent voltage variation ratio κ 0 the terminal leakage existing between the first terminal and the second terminal can be calculated.
Abstract:
A shaft revolution counter comprising one or more reed magnetic sensors (51) interacting with one or more magnets (52) attached to the shaft (53). The interaction generates voltage spikes in the reed magnetic sensors that are used as input signal to an electronic non-volatile counter, as well as its sole power source.
Abstract:
The present invention relates to a method and a device for measuring volume flow rates of liquid phase components and gas and determinating their volume concentrations in a multiphase mixture along a pipeline. Measurements are executed with an ultrasonic system which includes a set of local acoustic transducers arranged in the interior of the pipeline. Each pair of an emitter and a receiver of the transducer forms a sampling volume of a medium being under control. Volume concentrations of mixture components are determined by timing of passage of acoustic pulses through the sampling volume of the medium. Volume flow rates of the mixture components are calculated by measuring phase velocities and volume concentrations in two pipeline divisions with different cross-section areas located in series at a distance one from the other in flow direction.
Abstract:
A method for controlling the gas flow within a digital mass flow controller. The method calculates a digitally enhance flow rate signal that more accurately represents an actual flow rate through the digital mass flow controller. The digitally enhanced flow rate is calculated using a sensed flow rate signal output from a flow sensor, a scaled first derivative of the sensed flow rate signal, and a scaled, filtered second derivative of the sensed flow rate signal. A set-point signal is compared to the digitally enhanced flow rate signal to generate a digital error signal. The digital error signal is provided to a digitally realized PI (proportional integral) controller. The PI controller generates a digital control signal which is used to control a valve in the digital mass flow controller.
Abstract:
A novelty article (10) for use in connection with liquid has a body (12) and a generating mechanism (34), which is attached to the body (12), for generating electrically produced special effects, such as audible sounds and visible lights, so as to enhance amusement for a user. The generating mechanism (34) is provided with an activating mechanism (40), which is attached to the body (12), for activating the generating mechanism (34) in response to contact by liquid. In accordance with one feature of the present invention, the body (12) includes a drinking straw having a passageway (14) for liquid. The activating mechanism (40) has a pair of electrical contacts (46, 48) positioned in the passageway (14) so as to activate the generating mechanism (34) in response to liquid flow through the passageway (14).
Abstract:
The present disclosure refers to monitoring a printing fluid, in an example, a flowmeter is disclosed wherein the flowmeter comprises: a first port and a second port to be connected within a fluid path; a sensing tube between the first port and the second port, the sensing tube comprising a loop; a plurality of ferromagnetic elements within the sensing tube; and an interface element circled by the loop and magnetically coupled to the ferromagnetic elements; wherein the flowmeter comprises a processor to determine, based on a rotation of the interface element, a flow parameter.
Abstract:
Die Erfindung betrifft einen dreidimensionalen Schaltungsträger mit einem Substrat (2), wenigstens zwei elektrischen Leiterbahnen (3a, 3b), mindestens einem Sensorelement (4) und einem Anschlussbereich (5) zur elektrischen Kontaktierung der wenigstens zwei Leiterbahnen (3a, 3b) mit einem elektrischen Leiter (10), wobei der Schaltungsträger (1) eine längsgestreckte Form aufweist und an einem ersten Ende (1a) das Sensorelement (4) und an einem entgegengesetzten zweiten Ende (1b) der Anschlussbereich (5) angeordnet ist, wobei beide Leiterbahnen (3a, 3b) nebeneinander auf der Außenseite des Schaltungsträgers (1) verlaufen, wobei eine erste Leiterbahn (3a) das Sensorelement (4) mit dem Anschlussbereich (5) elektrisch verbindet und eine zweite Leiterbahn (3b) geeignet ist, durch ein metallisches Gegenstück (20) galvanisch gekoppelt zu werden, wobei das erste Ende (1a) des Schaltungsträgers (1) aus wenigsten einer schmalen Verlängerung (6) des Substrats (2) gebildet wird und das Sensorelement (4) neben dieser Verlängerung (6) angeordnet ist, derart, dass das Sensorelement (4) gegenüber der Längserstreckung der schmalen Verlängerung (6) zurückversetzt ist. Des Weiteren betrifft die Erfindung eine Anordnung aus einem solchen Schaltungsträger und einer metallischen Hülse ein Messgerät mit einer solchen Anordnung sowie eine Verwendung einer solchen Anordnung.
Abstract:
The present invention concerns an elongated capacitive sensor (1) for fluid monitoring. The sensor (1) comprising: a fibre support (5) made of a dielectric material or dielectric composite material; and a first electrode (7, 9) and a second electrode (7, 9) arranged longitudinally along the fibre support (5), the first and second 5 electrodes forming together with the fibre support (5) a capacitive sensing element whose capacitance is dependent upon one or more electrical properties of one or more materials inside the support (5) and/or outside the support (5), and/or is dependent upon a change of materials configuration and associated overall change of one or more electrical properties inside the support (5) and/or outside the support (5).
Abstract:
A heat measurement apparatus and method for a non-invasive measurement of heat generation are provided. The method include determining a flow value of a flowing substance within a system based on a system power usage; and determining a heat energy value of a system based on a temperature difference of a first temperature of the flowing substance at an inlet of the system from a second temperature of the flowing substance at an outlet of the system and the flow value of the system.