Abstract: A bicycle bell includes a fixing seat on a pipe clamp, a bell cover, and an elastic support. The elastic support has two curved arms and a horizontal section. The two curved arms extend upward from two ends of the horizontal section. The two curved arms have engaging ends extending outwardly and laterally. The horizontal section is mounted to the fixing seat. The engaging ends are connected to the bell cover in a snap-on manner. In the bicycle bell, the fixing seat and the bell cover are assembled through the elastic support. The elastic support is a relatively flexible medium with poor energy conductivity, so that to the vibration amplitude of the bell cover is large, the energy loss is small, and the vibration is longer and louder.

Abstract: An optical reading device for a pointer instrument which has a pointer and a scale face or dial with different degrees of reflectance in each case, includes an illumination device for illuminating the scale face or dial and a plurality of light sensor elements which are arranged in a circular arc about the rotational axis of the pointer in order to detect the light of the illumination device reflected back by the scale face or dial, wherein the illumination device is configured to uniformly illuminate the scale face or dial and each light sensor element is configured with an isosceles triangle outline, where each light sensor element is offset with respect to one another by half of the base width in the circumferential direction of the circular arc.

Abstract: The present disclosure generally relates to a standalone gas extraction and detection system comprising a gas extraction chamber operable to receive a wellbore fluid and a carrier gas; a gas detection chamber in fluid communication with the gas extraction chamber, the gas detection chamber comprising reflective surfaces operable to receive infrared radiation (IR) and an extracted gas sample from the gas extraction chamber; an open-path detector operable to detect the IR in the gas detection chamber; and a shaft extending through the gas extraction chamber and the gas detection chamber of the standalone gas extraction and detection system.

Abstract: Provided is a force sensor capable of expanding the application range of an electrically conductive member having an isotropic gauge factor. The electrically conductive member is placed in a designated latitude region on a main face of the strain body to annularly extend around a pole and to be divided at a position. The designated latitude region is a latitude region in which the magnitude of the sum of a first strain amount in the longitude line direction of the strain body relative to the pole and a second strain amount in the latitude line direction is not less than a reference value when a force having a component in the perpendicular direction to the main face is applied to the strain body.

Abstract: A measurement device and method for measuring concrete curing. The measurement device includes a closed air-filled chamber, chamber walls defining a closed air-filled chamber space inside the closed air-filled chamber, and a pressure sensor provided inside the air-filed chamber space of the closed air-filled chamber. The chamber walls are arranged air and water vapour permeable allowing air and water vapour flow into the closed air-filled chamber space and out of closed air-filled chamber space.

Abstract: A laser level meter, comprising a housing, wherein a laser assembly is mounted on the housing, the lower end portion of the housing is further provided with an end cover, the end cover is recessed towards the interior of the housing to form a cavity, and an air suction port is provided in the cavity. The laser level meter further comprises a suction device arranged in the housing, wherein the suction device comprises a fan, and the fan rotates so as to suck air between the cavity and a mounting surface of the laser level meter from the air suction port.

Abstract: A case configured to receive a plurality of mechanical watch movements in the wound state, each movement being housed inside a compartment, configured to receive and maintain the movement according to a predefined orientation. In this position, the winding buttons of the movements are positioned facing respective microphones which are mounted inside the case. The microphones are configured such that they cancel the noises detected, such that the acoustic measurements of each of the movements are essentially not disturbed by the noises produced by the adjacent movements. Also, a method for testing a plurality of mechanical movements installed in the case, and to a testing system which includes the case. The movements are measured by a plurality of cycles of consecutive and successive measurement periods.

Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a pressure reference value, and a chip and an electronic device. The method includes: consecutively acquiring N pressure signals by a pressure sensor; acquiring consecutive N pressure values on the basis of the N pressure signals; and determining a latest pressure reference value on the basis of the consecutive N pressure values and time characteristics of the consecutively acquired N pressure signals; wherein each of the pressure values is a difference between a sampling value corresponding to a pressure signal and the pressure reference value, and the consecutively acquired N pressure signals are acquired within a duration where a pressure is applied to the pressure sensor once, N being a positive integer greater than 0.

Abstract: A leakage detector for a fuel vapor processing system includes a pressure sensor and a control unit. The pressure sensor is configured to measure an internal pressure of the fuel vapor processing system. The control unit is configured to calculate changes of a fuel vapor pressure from a saturation vapor pressure curve of the fuel vapor, a fuel vapor concentration of the fuel vapor in a gaseous layer within the fuel vapor processing system, and a convective velocity in the gaseous layer, to correct a reference pressure for leakage detection based on the changes of the fuel vapor pressure so as to calculate a corrected reference pressure, and to compare the internal pressure measured by the first pressure sensor to the corrected reference pressure so as to determine whether any of the fuel vapor has leaked from the fuel vapor processing system.

Abstract: A surface finish stylus is described that includes an elongate stylus shaft and a contact element protruding from the elongate shaft for contacting a surface to be measured. The contact element is deformable and the stylus shaft includes a clamp for retaining the contact element, the contact element being deformed by the clamp. The contact element may comprise a metal, such as chromium steel or nitinol. The contact element includes one or more regions of weakness to cause a required deformation when retained by the clamp. The surface finish stylus may be used with a surface finish measurement probe or the like.

Abstract: The present disclosure generally relates to liquid level meter, and more particularly, to a flexible multi liquid level measurement apparatus and method. There is a vast need in industry and water resource management to measure level of liquid in arbitrary shaped well and in tank contained more than one liquid. Ordinary methods are not capable to determine liquid level in said cases. This disclosure proposes a liquid level meter (910) which measurement apparatus (905) is flexible. The apparatus is capable to measure liquid level in an arbitrary shape well or tank (900) where the well or tank has filled with more than one liquid (915,920,925). The measurement apparatus and method disclosed here is completely digital at inventive subject matter level and doesn't affect by environmental noises and conditions.

Abstract: A method of performing a substrate detection process is provided. The method includes emitting a signal to a surface of a substrate from an emitter disposed in a substrate storage container. The method also includes collecting the signal reflected from the surface of the substrate by a receiver disposed in the substrate storage container. The method further includes transmitting data corresponding to the collected signal to a signal processor. In addition, the method includes analyzing the data, and determining whether an action is to be performed on the substrate based on the analyzing.

Abstract: Systems and methods for analyzing and modeling natural gas flow in subterranean shale reservoirs. In some embodiments, methodologies and techniques for determining and modeling natural gas flow in shale formations using methodologies and techniques capable of determining natural gas properties related to dual-continuum flow, permeability, and pressure within a subterranean shale reservoir. In some embodiments, the natural gas properties are determined by subjecting a subterranean shale reservoir sample to pulse-decay analysis. In certain embodiments, the methodologies and techniques described may be used in various reservoirs exhibiting macroporosity and microporosity, such as fractured reservoirs and carbonate reservoirs composed of reservoir fluids.

Abstract: A system includes a pipe string; a wireline cable run through the pipe string; and a downhole tool for formation testing, wherein the downhole tool comprises, an upper assembly, an impeller unit connected to a downhole end of the upper assembly, wherein the impeller unit comprises a first impeller coupled to a second impeller by a shaft, a first flowline having a first end that is open to the formation, a packer unit that isolates a portion of a borehole surrounding the first end of the first flowline from the rest of the borehole, and a tool string connected to the first flowline, wherein the tool string hydraulically connects the packing device to the upper assembly.

Abstract: A compass, comprising: a housing; a control dial; a drive gear, wherein the drive gear is attached to the control dial; an adjustment gear, wherein the adjustment gear is in in communication with the driver gear; a first gear portion in communication with the driver gear; a second gear portion in communication with the adjustment gear; and a plurality of wheels, wherein the wheels are secured to the first and second gear portions.

Abstract: A method includes installing a measurement device on the injection wellhead, injecting a fluid into the injection well at a plurality of injection rates using a computer processor, measuring an injection bottom hole pressure at each injection rate to determine a plurality of injection bottom hole pressures using the computer processor, determining a relationship between the plurality of injection rates and the plurality of injection bottom hole pressures using the computer processor, and determining an injectivity index of the injection well using the relationship and the computer processor.

Abstract: An inspection system to measure the condition of at least a wall of a ground opening, the inspection system having a head unit for lowering into a borehole during a data collection phase wherein at least one set of test data is collected concerning one or more physical characteristics of the borehole during the data collection phase, the head unit having an internal measurement system and a sensor arrangement with a plurality of sensors facing radially outwardly of a head axis that is generally parallel to at least a portion of a borehole axis, the plurality of sensors allowing the head unit to be moved during the data collection phase without rotation about the head axis, the plurality of sensors at least partially producing the at least one set of test data collected during the data collection phase.

Abstract: Described are an interface module for two-dimensional chromatography and a method of performing a chromatographic separation that may use the interface module. The interface module includes a valve module, a collection needle, a modifier module and a sample storage element. The valve module has a first port configured to receive an eluent from a first chromatography system, a second port configured to provide a fraction obtained from the eluent, a third port and a fourth port. The collection needle and the modifier module are in fluidic communication with the valve module at the third and fourth ports, respectively. The modifier module includes a source of a modifier solvent. The sample storage element is in fluidic communication with the valve module and is configured to receive a volume of the fraction for injection as a sample into a second chromatography system.

Abstract: The present invention relates to the technical field of environmental monitoring, and particularly relates to a method for monitoring a forestry microenvironment, comprising the following steps: S1: moving a forestry detection vehicle to a monitoring position; S2: inserting the sampling device on the forestry detection vehicle into the soil at a corresponding depth; S3: disconnecting the sampled soil, and withdrawing the sampling device from the forestry detection vehicle to complete the sampling process; S4: weighing the above soil sample quantitatively, and detecting the soil standard solution through a detection instrument. The sampling device in S1 comprises a rack; an outer sleeve is arranged in the rack; and a sampling mechanism is arranged in the outer sleeve.

Abstract: A filling level monitoring device for monitoring a filling level of a fluid in a container includes exciter(s), sensor(s), a signal source connected to the exciter(s), a processor, at least one spatial orientation and acceleration sensor, and a filling level indicator. The device uses the signal source and the exciter(s) to couple vibrational loads having multiple frequency components into the container. Sensors measure vibrations in the container after the exciters transmit the vibrational loads into the container. The processor performs spectral analysis of the input signal and of vibration signals from the sensors, comparing these respective spectral functions to extract resonance frequencies of the container, which are based on the spatial orientation of the container.