摘要:
An ultrasonic sensing device (55) has a transmitter (T2) which is adapted to transmit a base signal (SB2) through a cleaning airstream in a grain cleaning system (30). The base signal (SB2) is modified by movement of the cleaning airstream creating a modified signal (SM1,SM2) that is detected by spaced-apart receivers (R1,R2). An electronic control unit (ECU) is configured to process the received modified signals (SM1,SM2) and determine a phase shift vale (ϕ1,ϕ2) from a base signal parameter and a modified signal parameter. The phase shift value is used as an input parameter for the generation of an airstream velocity value (V a ) and control signals for the adjustment of various working units of a combine (10) including, by way of example, a fan (34) and sieves (38,39).
摘要:
According to the invention, a method is provided of producing a void fraction (VF) error curve which correlates an apparent VF with the actual VF of a multi-phase flow, the method comprising: a) Using a device to measure a property of the multi-phase flow from which an apparent VF may be calculated; b) Calculating the apparent VF using the measured property from the device; c) Determining the actual VF of the multiphase flow using a radiometric densitometer; d) Using the values from b) and c) to calculate the VF error; e) Repeating b) - d) for all expected flow conditions to generate a VF error curve.
摘要:
Methods may include measuring an interfacial tension (IFT) for a dead oil sample prepared from a fluid within an interval of a formation; calculating a gas:oil ratio for the fluid within the interval of a formation at a specified temperature and pressure; calculating a live oil density for the fluid within the interval of a formation for the specified temperature and pressure; and converting the IFT for the dead oil sample to a corrected IFT measurement for a live oil within the interval of the formation from the calculated gas:oil ratio and the calculated density. Methods may also include constructing a depletion path for the dead oil sample from one or more isobars and one or more isotherms; and converting the IFT for the dead oil sample to a corrected IFT measurement from the calculated gas:oil ratio and the calculated live oil density for a live oil.
摘要:
Verfahren zum Bestimmen von Eigenschaften eines durch eine Messanordnung strömenden kohlenwasserstoffhaltigen Gasgemischs, umfassend: Bestimmen eines Wärmeleitfähigkeitswerts, eines Dichtemesswerts und eines Viskositätsmesswerts sowie jeweils zugehöriger Temperatur- und Druckmesswerte des strömenden Gasgemischs; Bestimmen eines Wasserstoffanteils des Gasgemischs auf Basis des Wärmeleitfähigkeitswerts, sowie zugehöriger Temperatur- und Druckmesswerte Bestimmen eines Dichtemesswerts sowie zugehöriger Temperatur- und Druckmesswerte des strömenden Gasgemischs; Ermitteln eines Werts der die mittleren molaren Masse oder der Standarddichte des Gasgemischs auf Basis des Dichtemesswerts sowie zugehöriger Temperatur- und Druckmesswerte; Ermitteln eines Werts für die mittlere molare Masse bzw. der Standarddichte eines wasserstoffbefreiten Restgasgemischs auf Basis der mittleren molaren Masse bzw. der Standarddichte des Gasgemischs und des Wasserstoffanteils Ermitteln eines Werts für den Wobbe-Index des Restgasgemischs auf Basis des Viskositätsmesswerts sowie zugehöriger Temperatur- und Druckmesswerte; Ermitteln eines ersten Werts für den Brennwert des Restgasgemischs auf Basis der mittleren molaren Masse bzw. der Standarddichte des Restgasgemischs und des Wobbe-Indexes des Restgasgemischs.
摘要:
Un sistema sumergible (1) para la medición de la densidad y/o concentración de sólidos de una dispersión, que puede estar en forma de líquido, una mezcla de múltiples líquidos, una suspensión de sólidos en líquido, o una combinación de estas formas, al interior de un reactor (11) en el cual se introduce gas en forma de burbujas, que comprende: un dispositivo de exclusión de gas abierto y pasante (4) que tiene un cuerpo tubular (5) de sección transversal variable por donde ingresa la dispersión sin burbujas de gas, el cual empalma con una cañería de entrada (6); una cámara sellada (8) que posee un medio de medición de densidad, al circular entre una entrada (14) de dicha cámara sellada (8) y una salida (15) de dicha cámara sellada (8). La salida (15) de dicha cámara sellada (8) está acoplada a una cañería de salida (7) por donde retorna la dispersión hacia un reactor (11), donde está siendo procesada. Dicho sistema posee un transmisor (9) conectado a dicho sensor que genera una señal de salida proporcional a la densidad de la dispersión sin burbujas de gas a través del sensor ubicado al interior de la cámara sellada (8); y una unidad de procesamiento (10) que genera una señal de salida (16) proporcional a la concentración de sólidos de la dispersión sin gas, y además, la densidad de la pulpa. Esta invención, comprende además, el método de obtención de la concentración y densidad de la pulpa.
摘要:
Die vorliegende Erfindung betrifftein Verfahren zum Erfassen eines Hydriergrades einer Flüssigkeit (107), die einen oder mehrere hydrierbare flüssige Wasserstoffträger umfasst, mit: Erfassen (S101) einer Stoffeigenschaft der Flüssigkeit (107) und Bestimmen (S102) des Hydriergrades der Flüssigkeit (107) auf Basis der erfassten Stoffeigenschaft der Flüssigkeit (107).
摘要:
An apparatus for indicating or measuring urine status of an individual comprises a sensor arranged to be contacted by a stream of urine from the individual and measure a characteristic of the urine. The sensor is in communication with a display. The display provides an indication of the hydration status of the individual based on urine sample.
摘要:
An HF olefiri/isoparaffin alkylation process is carried out in an alkylation unit with a settling vessel in which the alkylate product is separated from the HF acid catalyst containing water and acid soluble oil (ASO). The density of the liquids in the settling vessel is measured at different levels by means of a nuclear density profile analyzer. The acid strength of the acid phase is determined from the density measurement and an optional temperature measurement. The proportion of water in the acid phase may also be measured separately by measurement of its electrical conductivity to determine the respective contributions of the water and the ASO to the density of the HF acid phase.
摘要:
A humidity sensor and filter assembly are housed within a cylindrical barrel that is positioned in a process gas stream such as combustion flue gas. A portion of sample flue gas is conducted through the barrel and the filter assembly past the sensor located inside the filter so that accurate humidity measurements can be taken. Unwanted flue gas particulate matter accumulated on the outside surface of the filter is ejected by pulsed purge gas admitted into the filter to reverse the flow through the filter. In one embodiment a heat exchange chamber preheats the purge gas. In another embodiment the pulsed purge is supplied by a reciprocal piston contiguous with the internal volume of the filter that reverses the flow through the filter using the process gas.