Abstract: A gas sensor includes a sensing element, a metal shell that is tubular and that surrounds the sensing element, and a protector made of a metal and fixed to the metal shell. A back end portion of the protector is joined to an outer surface of the metal shell to form a joined portion. A coefficient of thermal expansion of a material of the protector at 800 degrees Celsius is higher than a coefficient of thermal expansion of a material of the metal shell at 800 degrees Celsius. In a cross section of a portion of the gas sensor including the joined portion, a minimum distance t1 between the outer surface of the metal shell and an outer surface of the protector and a minimum distance t2 between the outer surface of the metal shell and an inner surface of the metal shell satisfy 0.6?(t1/t2)?2.0.

Abstract: The sensor device (100; 200) for a device (10) for weathering or lightfastness testing of samples comprises a sensor housing (110) which is adapted to be arranged in a weathering chamber (1) of the device (10) in the same manner as a sample (3), and an air mass sensor (120; 220) which comprises a sensor element (120.2; 220.2) and is attached to the sensor housing (110) in such a manner that the sensor element (120.2; 220.2) is adapted to be mounted on the sensor housing (110.2; 220.2) and attached to the sensor housing (110) such that the sensor element (120.2; 220.2) is exposed in the same manner as a sample (3) to an air flow prevailing in the weathering chamber (1).

Abstract: Gypsum panels, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include a gypsum core having a first surface and an opposed second surface, a first facer material associated with the first surface of the gypsum core, and an environmental sensor assembly associated with the gypsum panel and configured to detect an environmental condition of the gypsum panel and wirelessly communicate data on the environmental condition to a reader.

Abstract: The invention provides a pressure sensor (10) that can be produced at low cost, operates more accurately and resists to high burst pressures. The pressure sensor (10) comprises at least one membrane (12) and a magneto-elastic detection device (14) for magneto-elastically detecting mechanical stress caused by pressurization.

Abstract: A gas detecting device includes a casing, at least one gas transporting actuator, at least one valve and at least one external sensor. The casing has an airflow chamber, an inlet, a branch channel and a connection channel. The airflow chamber communicates with an environment outside the casing through the inlet, and the branch channel communicates with the airflow chamber and the connection channel. The gas transporting actuator is disposed on the branch channel for transporting air into the airflow chamber and the branch channel from the inlet and has a gas inlet plate, a resonance plate and a piezoelectric actuator. The valve is disposed between the connection channel and the branch channel for controlling the air to flow into the connection channel. The external sensor is detachably disposed in the connection channel and has a sensor for measuring the air in the connection channel.

Abstract: Systems and methods for maintaining operation of gas sampling equipment utilized in oil and gas operations, wherein an isolation valve is deployed along a gas extraction conduit in order to isolate a gas analysis system from pressurized fluid that may be injected into the extraction conduit from a fluid delivery system. A parameter of the flow stream, such as a particular gas content or the presence of a bump gas, may be monitored. A change in the parameter may be indicative that debris is inhibiting fluid flow into the extraction conduit. When such a condition is suspected, gas sampling is suspended and the valve between the gas analysis system and the intake of the extraction conduit is closed. With the valve closed in order to protect the gas analysis system, a fluid is injected into the extraction conduit from the fluid delivery system.

Abstract: A method for determining a volume of fluid dispensed into a test housing includes creating an electrical potential across at least one input electrode of a plurality of input electrodes and at least one output electrode of a plurality of output electrodes. The input electrodes and the output electrodes are each coupled to the test housing. The method includes receiving at least one signal from the at least one output electrode based on the fluid dispensed into the test housing. The method includes calculating the volume of fluid dispensed into the test housing based on the at least one signal received from the at least one output electrode, a dimension associated with an internal channel defined within the test housing, and a distance between two input electrodes of the plurality of input electrodes.

Abstract: A method for analyzing particles includes concentrating the particles in an interior region of an air stream, generating a thermal gradient to deflect the concentrated particles from the interior region of the air stream to a peripheral region of the air stream, receiving orientation information, and adjusting the thermal gradient in response to the received orientation information. The particles may be concentrated in the interior of the air stream with at least two heater elements positioned near a periphery of the air stream and configured to cooperatively force particles away from the periphery and towards the interior region of the air stream. The orientation information may include gravity vector component information or angular rate component information in one, two or three substantially orthogonal directions relative to the air stream. Various systems for airborne particle detection with orientation-dependent particle discrimination are disclosed.

Abstract: The present disclosure provides an unmanned aerial vehicle (UAV). The UAV includes a main body; an inertial measurement unit (IMU) disposed in the main body; a mounting bracket for fixing the IMU; and a circuit board fixedly disposed at the main body and integrated with a plurality of functional modules. The IMU is fixed on the circuit board through the mounting bracket.

Abstract: The invention resides in a sensor unit (100) for measuring and monitoring a plurality of parameters associated with an asset or equipment (126, 128) having a fixing connected thereto. The asset can typically be an object, such as a rail or motor casing, that is fixed, using a fixing (122) such as a bolt. The sensor unit has a housing (112) having a portion (120) for receiving a fixing therethrough; sensors (114) arranged to measure and/or monitor (i) parameters associated with a fixing that is secured to the asset via housing and/or (ii) parameters influencing the performance of the asset; a processor (142) configured to process data from the sensors; and a communicator (116) adapted to transmit said data to a remote device. At least one of the sensors can be an inductive sensor, which can measures the displacement or force applied to a fixing against the asset to which it is fixed, said fixing is biased against a resilient member located in the housing.

Abstract: Method of operating a flow sensor device (10) with a first sensor arrangement (11) for measuring a flow (F) of a fluid (g) and a further first fluid property (p1), and with a second sensor arrangement (12) for measuring a further second fluid property (p2); said method comprising the steps of operating said flow sensor device (10) for determining said further first fluid property (p1) by means of said first sensor arrangement (11), operating said flow sensor device (10) for determining said further second fluid property (p2) by means of said second sensor arrangement (12), comparing said further first fluid property (p1) and further second fluid property (p2) and producing a comparison result (R), and monitoring said comparison result and producing a fault signal (FS) in case of a fault state. The present invention relates to such a sensor device.

Abstract: An apparatus and a method for monitoring a tire pressure of a vehicle are provided. The apparatus for monitoring a tire pressure of a vehicle according to the present disclosure includes a first sensor configured for measuring a tire pressure of one of first to fourth wheels of the vehicle, a plurality of second sensors configured for respectively measuring wheel speeds of the first to fourth wheels, an analysis device configured for analyzing tire pressures of the first to fourth wheels based on a measured value from the first sensor and measured values from the second sensors, and a controller configured for determining a tire in a low-pressure state based on the tire pressure analysis results of the first to fourth wheels.

Abstract: Exemplary embodiments are directed to sensor apparatuses for attachment to an animal that include a housing and a sensor assembly. The housing can be attachable to the animal and includes an internal cavity formed therein. The sensor assembly can be disposed within the internal cavity of the housing. The sensor assembly includes a force sensor and an accelerometer arranged to detect force data and accelerometer data representative of a physiological state of the animal. Exemplary embodiments are also directed to method and sensor systems for detecting a physiological state of an animal.

Abstract: A measuring cup has vertical sections of the sidewall to shake materials against to help level them, angled sections to create a decrease in width toward the bottom of the measuring space and increase toward the top, rings made from edges of these sections which present contents in a well-defined shape and serve as indicia, and a coexistence of angled and vertical sections between rings which give the contents an ill-defined shape indicative of an incomplete measurement.

Abstract: A stress sensor formed by a membrane plate; a first bonding region arranged on top of the membrane plate; a cover plate arranged on top of the first bonding region, the first bonding region bonding the membrane plate to the cover plate; three-dimensional piezoresistive elements extending across the membrane plate that are embedded in the bonding layer; and planar piezoresistive elements that extend across the membrane plate and are surrounded by and separated from the bonding layer.

Abstract: An actuation-and-detecting module is disclosed and includes a main body, a particle detecting base, plural actuators and sensors. The main body has a first compartment divided into a first chamber and a second chamber, a second compartment having a third chamber and a third compartment divided into a fourth chamber and a fifth chamber by a carrying partition. The particle detecting base is disposed between the fourth chamber and the carrying partition. The first actuator is disposed between the second chamber and a first partition. The second actuator is disposed within a receiving slot of the particle detecting base. The first sensor is disposed within the first chamber. The second sensor is disposed within the third chamber for detecting the air in the third chamber. The third sensor is disposed within a detecting channel of the particle detecting base for detecting the air in the detecting channel.

Abstract: A portable communication device may include a gas sensor enclosed in an enclosure, a port to allow flow of air into and out of the enclosure, and a light source disposed on an internal surface of the enclosure. The light source is operable to facilitate generation of ozone gas within the enclosure. The enclosure may contain a heating element that allows baseline calibration of the gas sensor by thermally decomposing ozone gas molecules. The gas sensor includes a miniature gas sensor such as a metal-oxide (MOX) gas sensor.

Abstract: The invention relates to a method for self-tracking of a data acquisition sensor equipping a wheel including a tire on a vehicle comprising a plurality of wheels (200) and being equipped with a system comprising an electronic unit (300) for a data acquisition sensor placed in each tire equipped with a radio-frequency transmitter for the purpose of the wireless transmission of said data to a central transmission and reception module (100) placed on the axle or frame of the vehicle, with the central transmission and reception module (100) receiving and decoding the information signals issued by the transmitters of each wheel, each electronic unit (300) being equipped to measure acceleration. The method is remarkable in that it consists of determining the front and rear of a tire by measuring the acceleration.

Abstract: The invention provides a method and device for measuring the elasticity of hardened cement for cementing of oil-gas wells. The measurement method comprises: determining the loading and unloading rates of the hardened cement; determining the maximum loading on the hardened cement; determining the experimental temperature and the experimental pressure of the hardened cement; establishing a stress-strain curve for the hardened cement; and describing the elasticity of the hardened cement with the degree of strain recovery of the hardened cement in different cycles, and describing the mechanic integrity of the hardened cement with the degree of damage to the hardened cement in different cycles. The invention further provides a device for measuring the elasticity of hardened cement for cementing of oil-gas wells.

Abstract: An assembly includes a housing defining a chamber. The assembly includes a sensor supported by the housing. The assembly includes a deflector forward of the sensor and having a front surface designed to direct air upward and a rear surface opposite the front surface. The housing has a vent in fluid communication with the chamber and aimed at the rear surface of the deflector.