Abstract: Provided is a dust measurement apparatus for accurately measuring the dust concentration of two spaces and minimizing the possibility of noise generation, comprising: a dust sensor; a body housing having the dust sensor loaded therein, and having an inner space; a first outer hole and a second outer hole, which are respectively formed at two points of the body housing so as to connect the outside and the inner space; a first fan and a second fan, which are provided at the positions corresponding to each of the first outer hole and the second outer hole and driven so as to form a flow toward the inner space from the outside; and a control part for selectively driving the first fan or the second fan.

Abstract: An extendable grade rod receiver includes a plurality of elongate telescoping rods provided with elongate channels along their lateral edges. A receiver receives a reference beam from a remote transmitter includes a carriage movable along the rods and coupled to the receiver for sharing axial movements. The carriage is provided with wheels moveable in directions generally normal to the axis. The wheels are receivable within the elongate channels of all of the rods and are inwardly biased towards the axis to retain the wheels within the channels or grooves of any of the rods as the carriage moves over the steps or discontinuities as it moves from one rod to a next adjacent rod. Visual and machine-readable indicia are provided on the elongate front surfaces of the telescoping rods that can be encoded by a reader module on the receiver. Other mating rolling or sliding profiles can be used.

Abstract: An electronic scale calibrating method for an electronic scale is provided. The electronic scale includes a weighing pan, a memory unit, a first weight sensor and a second weight sensor. The weighing pan has a placement region. The first weight sensor and the second weight sensor are symmetric with respect to the placement region. Firstly, two standard samples are placed in the placement region simultaneously. Then, the first weight sensor and the second weight sensor sense the two standard samples to obtain a first read value and a second read value, respectively. Then, a first parameter, a second parameter, a first calibration coefficient and a second calibration coefficient are defined according to the first read value and the second read value. Then, a calibration formula is generated and stored in the memory unit.

Abstract: A pressure measuring probe, in particular for use in an aircraft is disclosed. In one aspect, the pressure measuring probe includes at least one acquisition tube, including a capability for discharging water and captured crystals contained in the atmosphere, where the discharge capability includes a drainage hole arranged in a rear partition of the tube, in the axis of symmetry thereof and in the flow direction of the flow of air.

Abstract: A cup includes a body having a cylindrical shape. The body includes a plurality of measurement indicators provided at an exterior surface of the body. The cup also includes a base integrally formed with the body. The body and the base are formed based on a silicone material.

Abstract: A level indicator for a telescopic sight can comprise a lower clamp member including a first end defining a threaded aperture and a second end defining a cylindrical head, and an upper clamp member including a first end defining an access hole and a second end defining a socket in which the cylindrical head is receivable. The upper clamp member is rotatable about the cylindrical head to form between the respective first ends of the clamp members a gap through which the telescopic sight is receivable into a space defined between the upper and lower clamp members. A level housing in which a level is received can extend from either clamp member. A single threaded fastener is receivable in the threaded aperture through the access hole to secure the upper clamp member to the lower clamp member around the telescopic sight.

Abstract: A leveling instrument includes a generally elongate carrier defining a carrier axis. A first liquid-filled bubble vial is mounted on the carrier and defines a first vial axis and an internal generally barrel-shaped surface of revolution about the first vial axis formed by a curve having a predetermined curvature to exhibit a first sensitivity. A second liquid-filled bubble vial defines a second vial axis and has a generally barrel-shaped surface of revolution about the second vial axis and formed by a curve having a curvature less pronounced than the predetermined curvature of the first vial to exhibit a second sensitivity greater than the first sensitivity, the first and second vial axes being generally parallel to each other. If the vials are curved they are similarly oriented and have different curvatures to exhibit different sensitivities. A method of using the multi-vial leveling instrument is described.

Abstract: A tool, such as a tape measure, including a spring-based retraction system is shown. The spring-based retraction system is driven by a spiral spring, that has a variable preformed stress profile along the length of the spring.

Abstract: The present invention comprises a test for evaluating spontaneous hydraulic fracturing fluid imbibition and oil displacement method and apparatus utilizing a composite core with a pressurized Amott cell test.

Abstract: A level sensing apparatus (110) for attachment to a sounding tube to measure levels of content in a tank. The level sensing apparatus includes a housing (16) for enclosing components of the level sensing apparatus (20). These components include a transmitter and an antenna (18) operatively connected to the transmitter for directing electrical or mechanical waves in a direction away from the transmitter. The antenna is adapted to also receive electrical and mechanical waves. The apparatus further includes a sounding tube adaptor (32) sized for attachment to a sounding tube, and a connector assembly operatively attaching the housing to the sounding tube adaptor. The connector assembly enabling the housing to rotate relative to the sounding tube adaptor about a horizontal axis to expose an open end of the sounding tube. In use, the level sensing apparatus allows for pulse radar measurement of liquid levels in the tank.

Abstract: A display device displays displacement of a bridge serving as a structure on a display part in the form of image information that is visually recognizable, based on a displacement amount of the bridge, the displacement amount having been calculated based on an output signal output from an acceleration detector serving as a physical quantity sensor provided on the bridge.

Abstract: Embodiments of the invention are directed to an integrated sensing system that includes a movable orientation device configured to dynamically position the movable orientation device based on receiving an air-flow. A gas sensor is coupled to the movable orientation device. The gas sensor includes a recognition element configured to detect a chemical in a plume. The movable orientation device is configured to perform a synchronized sensing operation that includes, based at least in part on the movable orientation device receiving the air-flow, moving the movable orientation device to dynamically maintain a predetermined orientation of the movable orientation device relative to a direction of the air-flow. The predetermined orientation includes positioning the gas sensor in a path of the air-flow, wherein the air-flow is influencing the plume to move along the path such that the recognition element is exposed to the plume.

Abstract: In one or more embodiments, a system for predicting health of a hydraulic pump comprises a reservoir tank temperature sensor to measure a temperature of a reservoir tank. The system further comprises a hydraulic pump temperature sensor to measure a temperature of the hydraulic pump. Also, the system comprises a differential pressure sensor to measure a differential pressure across a filter associated with the hydraulic pump.

Abstract: A physical quantity sensor includes: a movable body that includes a beam, a coupling portion that is connected with the beam and is provided in a direction intersecting with the beam, and a first and second mass portions that are connected with the coupling portion at connection positions; a first and second fixed electrodes are opposed to the first and second mass portions; and a protrusion are provided and protrude toward the first and second mass portions. In the intersecting direction, in a case where a distance from connection positions to end portions of the first and second mass portions opposite to the beam is L, and a distance from the protrusions to end portions of the first and second mass portions opposite to the beam is L1, the distance L1 is 0.5 L or longer and 3.1 L or shorter.

Abstract: An inflatable device, having an air flow path having a circumference and including an air diverter comprising a central motor receiver and a plurality of air deflectors extending radially from the motor receiver and located to define a plurality of air flow chambers surrounding the motor receiver; a motor mounted within the central motor receiver and having an output shaft rotatable by the motor and extending below the air diverter, the motor generating heat during use of the motor; a fan connected to the output shaft of the motor and located below the air diverter for rotating in response to rotation of the output shaft by the motor to generate a flow of air, the air diverter cooperating with the flow of air generated by the fan to create a turbulent air flow directed to flow through the air flow chambers and past the motor, the flow of air providing cooling to dissipate heat from the motor; and an inflatable body in flow communication with the air flow path and located above the air diverter for receiving t

Abstract: A vehicle rear mirror device includes a mounting plate, a mirror, a frame, a plurality of light emitting members, and a light guiding member. In response to a switch-on of a direction-indicator lamp, the light emitting members emit light to illuminate a direction-indicating pattern on the mirror to thereby warn a driver of a sidewise-approaching vehicle.

Abstract: The present invention provides a device and method for testing wear and friction properties of different materials under various experimental conditions representative of real usage conditions. In general, the device according to the invention is based on contacting a sample with a rotating disk with intermittent contact, in “open cycle” conditions, where dynamic loads are applied to the sample for the contact to occur. The control of dynamic loading is fully independent of the disk rotation.

Abstract: An explosion-proof electronic system. The system comprises a substantially explosion-proof enclosure, a disk that is free to rotate about an axis, where the disk is located within the enclosure, an optical sensor that is configured to sense rotation of the disk, where the optical sensor is located within the enclosure, and a processor that is coupled to the optical sensor and analyzes a rotation input from the optical sensor to control in part the operation of the electronic system.

Abstract: A method for determination and isolation for abnormal sub-sensors in a multi-core sensor. It can be intelligently determined whether the reason for an abrupt dramatic change in sensor data is a sensor fault or sudden pollution, so as to increase data reliability. A data online rate is increased if a repair can be performed via automatic determination when a device fault occurs, which has significant value for continuous monitoring required for a haze treatment operation. In addition, human and material resources for device maintenance may be saved, thereby reducing waste.

Abstract: A laser centering tool for surface areas used to find the center point or area of a surface. The laser centering tool uses multiple laser units or sources to project a plurality of lines on a horizontal or vertical surface. It may comprise of multiple lasers, rotational plates, prism, beam splitter, gear housing, and/or a gear mechanism. Edge lasers may be moved to outline the edge of a surface. The device may be in a cylindrical housing shape having an upper and lower base where the upper and lower base portion pivot relative to each other. The upper base housing portion may have segmented housing portions which may rotate in opposite but simultaneous rotational directions from an adjacent segment and the rotational segments may each have a laser unit.