Abstract: Systems and methods for monitoring pressure transients and pipe bursts in a pipeline network are provided. The system can include a pressure sensor for measuring pressure in a pipe and generating a pressure signal, and a hydrophone for detecting a change of the pressure and generating a hydrophone signal. The system can include a high pass filter that can filter a portion of the hydrophone signal corresponding to a particular frequency. The system can include a comparator that generates an interrupt signal when the hydrophone signal satisfies a threshold value. The system can include a microcontroller which stays in a sleep mode until receiving the interrupt signal. The microcontroller can switch on the pressure sensor to record the pressure signal generated by the pressure sensor after being woken up.

Abstract: The present invention relates to the field of chemical analysis detection and application, in particular to a marker peptide of snake venom thrombin-like enzymes (SVTLEs) from Agkistrodon Halys Pallas and an application thereof. The amino acid sequence of the marker peptide of snake venom thrombin-like enzymes (SVTLEs) from Agkistrodon Halys Pallas is TLCAGVMEGGIDTCNR. Characterizing the source of species and a content of the SVTLEs in a to-be-detected sample by using the marker peptide includes the following steps of: pretreating the to-be-detected sample by trypsin through enzymolysis, and taking a supernatant of an enzymolysis liquid as a test solution; and injecting the test solution and a reference solution into a liquid chromatography-mass spectrometer, and selecting a qualitative ion pair and a quantitative ion pair for detecting the source of species and a content of the SVTLEs in the to-be-detected sample.

Abstract: A sensor structure is disclosed comprising at least four planar layers subsuming at least one cavity housed but not contained by overlapping apertures through at least two of the planar layers, wherein the at least one cavity comprises a plurality of chambers, and wherein at least one chamber of the plurality of chambers is configured to be in fluid coupling with at least one other chamber. The plurality of chambers may be defined by overlapping apertures through a plurality of the planar layers. The plurality of chambers may include a Gas Chromatograph (GC) column. The planar layers may be flexible flat glass. The planar layers may be fused together. The layers may be made with apertures through the layers disposed in a desired pattern to define complex structures by the apertures overlapping between abutting layers when the layers are stacked. The planar layers may be configured to admit ultraviolet light.

Abstract: An online measuring system for the semi-volatile organic compounds in the gas phase is provided in the disclosure. The system comprises a filter head, a three-way electromagnetic valve, an enrichment-thermal desorption device, a two-position six-way valve, a mass flow controller, a gas pump, a gas chromatograph, a primary capture trap, a secondary focus trap, and a gas supply and pressure control system, the inlet of the filter head is connected to be provided with a sampling object, the outlet of the filter head is connected with the port B of the three-way electromagnetic valve through a passivated stainless steel tube, the port C of the three-way electromagnetic valve is connected with the inlet of the primary capture trap through a passivated stainless steel tube, and the port A of the three-way electromagnetic valve is connected to the gas supply and pressure control system through a passivated stainless steel tube.

Abstract: A filling level indicator for determining a filling level in a tank, having a resistor network arranged on a carrier substrate, a contact element, and a magnetic element. The contact element is arranged adjacent to the resistor network and the magnetic element is movable relative to the resistor network and the contact element. The contact element has a contact region deflectable by the magnetic element. An electrically conductive connection between the contact region and the resistor network is produced by the deflection of the contact region. The contact element has an attachment region connected to the carrier substrate, and the contact region is formed spaced apart from the resistor network and the carrier substrate.

Abstract: Described herein are passive samplers, making of such samplers, and methods of use. In an example embodiment, a passive sampling membrane comprises, for example, a continuous mesoporous sequestration media having a sequestration phase and a support membrane configured to support the sequestration phase. The sequestration phase may include a hydrophobic region and a hydrophilic region. The continuous mesoporous sequestration media may be configured to simultaneously sequester polar and non-polar organic substances.

Abstract: A method (and corresponding downhole tool) is provided for downhole fluid analysis of formation fluids. The downhole tool is operated to draw live fluid from the formation through the downhole tool and acquire observed sensor measurements of the live fluid (which includes filtrate contamination) that flows through the downhole tool. The observed sensor measurements are used in an inversion process that solves for a set of input parameter values of a computational model that predicts level of filtrate contamination in the live fluid that flows through the downhole tool. The set of input parameter values includes at least one endpoint value for the observed sensor measurements. The set of input parameter values solved by the inversion process can be stored and output for different applications.

Abstract: A sensor for operating in an environment subjected to corrosive gases or liquids under pressure, including a housing inside which are installed: a sensing portion, at least one wire electrically connected to the sensing portion, and a seal for sealing the connection between the sensing portion and the at least one wire, with at least one through-hole receiving a portion of the at least one wire. The sensor further including a compressor installed inside the housing, movable with respect to the housing and adapted to contact the seal in order to compress. The seal is made from a single material that is softer than the material constituting the housing. Upon displacement of the compressor, the seal is deformed until the creation of a compression force exerted by the seal onto the portion of the at least one wire, prevents any passage of corrosive gases or liquids between the seal therebetween.

Abstract: A gas-sensing apparatus with gas convection capability includes a gas sensor mounted inside a container, a substrate forming a bottom plate of the container and an actuator. The gas sensor is mounted over a first surface of the substrate internal to the container. The actuator is coupled to a second surface of the substrate external to the container. The actuator can cause convection of a gas within the container by enabling movements of the substrate in response to an activation signal.

Abstract: A breath test system is provided comprising a sensor unit configured to sense the presence or concentration of a volatile substance present in air flowing through a predefined inlet area, and generate a signal corresponding to the concentration of said substance. Also provided is an apparatus configured to detect the presence of a person in the vicinity of said input area, and registering said presence, and configured to respond by delivering an output. This apparatus includes a unit configured to call for immediate attention of said person, and upon registration of the presence of said person, provide instructions to said person to direct an expiratory air flow towards said inlet area. An analyzer to determine breath substance concentration of said person is also provided, the determination based on said signal corresponding to the substance concentration.

Abstract: A sensor module according to one mode of the present disclosure includes a sensor part and a case configured to house the sensor part. The case includes: a contact part formed from an elastic body and including a contact surface with which to contact an installation target of the sensor module; and a magnet disposed along the contact surface of the contact part.

Abstract: A fluid level detection apparatus includes a vibrator, a vibration sensor, and a controller. The vibrator is configured to apply a vibration to a container that contains a fluid. The vibration sensor is configured to detect a vibration wave that is generated by the vibrator and propagates through the container. The controller is configured to control an operation of the vibrator and perform arithmetic processing on a detection signal obtained from the vibration sensor. The vibrator and the vibration sensor are provided on an outer wall surface of the container at respective positions that interpose, from above and below, a fluid level of the fluid provided in the container. The controller is configured to calculate a height of the fluid level, on the basis of the vibration wave detected by the vibration sensor.

Abstract: A system and method for concurrently measuring odorant concentration and also compensating for changes in relative air density when measuring odor intensity levels may be used to provide more accurate and reliable readings from an odorometer. Odorometers typically measure the concentration of a given target gas in a gas-air mixture. Because changes in air density make it difficult to accurately determine how much air is in the gas-air mixture sample, a method of compensating for changes in the air density is able to produce a more accurate concentration reading. By measuring the relative temperature and pressure of the air at calibration and when a particular reading is taken, the final reading can be corrected to account for changes in the air density. By correlating the odor intensity readings with odorant concentration readings a wide array of advantages may be realized.

Abstract: First to eighth laser measurement sections (30a) to (30h) of a laser measurement unit (30) measures a height of a surface of powder resins (15) in a coil insertion range CA for every angular degree in a circumferential direction of a stator core (2). A control unit (18) computes the number of points where the height of the surface is lower than a predetermined height among measurement results at multiple points measured by the first to eighth laser measurement sections (30a) to (30h), where the number of points is defined as an index value indicative of a dispersion of the measurement results. When it has been determined that the index value exceeds a first predetermined value, a notification is issued by outputting from a speaker (32) a sound indicative of the fact that the index value that has been computed exceeds the first predetermined value.

Abstract: In order to detach substances stably from an inspection object, an adhering substance collecting device includes: ejection openings configured to eject gas; a housing on which the ejection openings are provided; and supporting portions which are installed on a surface of the housing on which the ejection openings are provided, and have a prescribed height. The supporting portions include protruded portions formed on the housing. The supporting portions each have a cuboid shape, and are installed such that a distance therebetween becomes smaller toward a direction of a recovery opening that is configured to collect substances having been detached from an inspection object, from the gas.

Abstract: An assembly for determining a type of a fluid, the assembly configured to be mounted to a tank containing the fluid, comprises an ultrasound sending/receiving subassembly and a processor module. The ultrasound sending/receiving subassembly is configured to send a plurality of ultrasound signals into the fluid and receive the ultrasound signals reflected from the fluid. An ultrasound signal of the plurality of ultrasound signals has at least a first frequency and a second frequency different from the first frequency. The processor module is adapted to determine an attenuation of the ultrasound signal at the first frequency and at the second frequency.

Abstract: In a method for detecting moisture on a road surface used by a vehicle, wherein at least one acoustic signal resulting from the moisture on the road surface is captured by at least one sensor device arranged on said vehicle, and wherein the captured acoustic signal is analysed via at least one analyser associated with said vehicle, it is provided according to the invention that at least one energy value of at least one signal portion of the captured acoustic signal is calculated for the analysis, that the effective value of the at least one signal portion is calculated, that a shape factor of the at least one signal portion is calculated from the quotient of the effective value and the energy value, that the minimum of the energy value in the at least one signal portion is calculated, that the maximum of the shape factor in the at least one signal portion is determined, that a quotient of the minimum of the energy value and the maximum of the shape factor is created and that said quotient is associated with a

Abstract: A method at a sensor apparatus affixed to a transportation asset. The method includes calibrating the sensor apparatus by initiating a vertical impact at the transportation asset, measuring spring oscillation and creating a model of the transportation asset. The method further includes detecting, subsequent to the calibrating, an impact event at the sensor apparatus. The method further includes measuring spring oscillation due to the impact event at the sensor apparatus and using the measured spring oscillation in the model created during calibration to create a load mass estimate for the transportation asset.

Abstract: A particulate matter sensor includes a sensing element with a first electrode and a second electrode, an inner shield with the sensing element disposed therein, and an outer shield with the inner shield disposed therein. The inner shield includes a first portion with an inner shield inlet and a second portion which is smaller in diameter that the first portion such that the first and second electrodes are within the second portion. The outer shield includes an outer shield inlet which communicates exhaust gases to the inner shield inlet.

Abstract: A sampler for liquid chromatography is described. The sampler includes an injection valve and a sample loop. The injection valve includes one waste port, two sample loop ports, and two high-pressure ports. The sample loop port includes a first loop part and a second loop part. The injection valve can be configured to have LOAD position and INJECT position. The injection valve can also be configured to have one or more additional positions such as a FULL PURGE position, a PUMP PURGE position, and a NEGATIVE PRESSURE position.