Abstract: Devices and methods for testing cement include: a pressure vessel with a sample container inside an interior working volume of the pressure vessel, the pressure vessel configured to supply a first pressurized fluid to control a pore pressure of a cement sample and to supply a second pressurized fluid to lateral exterior surfaces of the sample container to provide a confining pressure that can be different than the pore pressure.

Abstract: An in situ device for soil investigation including a probe for inserting into and advancing into the ground, the probe including: at least one dilatometer presenting at least one expandable membrane, a chamber for fluid to be fed to the dilatometer and expand the membrane, a compression/pressure regulator unit connected to the chamber and dilatometer, to generate and/or regulate the fluid pressure, a control unit for the connector and the dilatometer, electrical powering unit to power the dilatometer, compression/pressure regulator unit, control unit, and a pressure measurement unit, unit for storing pressure values, measured by the measurement unit, for the fluid fed to said dilatometer. These components all housed within the probe. The probe being a closed body without connections to the outside for feeding pressurized fluid to the dilatometer and/or for feeding control signals for the device. The chamber being the only fluid feed source for the dilatometer.

Abstract: A gas chromatography device adapted for detecting leakage of hydrogen gas without using an air pump and long piping is provided. The gas chromatography device includes: a column oven having a housing, a column disposed in the housing, and a heater heating air in the housing; a sample vaporization chamber supplying a sample to an inlet end of the column; a carrier gas supply section supplying a carrier gas to the sample vaporization chamber; a detector connected to an outlet end of the column; a controller controlling the heater and the carrier gas supply section; and a hydrogen gas detecting sensor. The carrier gas is hydrogen gas. A through hole is formed in the housing and a material that allows hydrogen to pass through but does not transmit heat is disposed in the through hole. The hydrogen gas detecting sensor is disposed near the through hole outside the housing.

Abstract: A substance detection sensor includes an insulating layer; two electrodes spaced in opposed relation to each other on the insulating layer; and conductive layers formed between the two electrodes on the insulating layer so as to electrically connect the two electrodes, and of which a swelling ratio varies depending on the type and/or amount of a specific gas. The conductive layers are formed by dividing into plural layers between the two electrodes.

Abstract: An apparatus for the industrial measurement of bores in a measurement object is provided. The apparatus includes a measurement probe which can be introduced into the bore and at which at least one distance sensor is provided with which the instantaneous distance of a reference point of the measurement probe from a wall of the bore can be determined. The measurement probe is rotatably supported at a holder which is fixed with respect to the measurement object and/or whose position relative to the measurement object is known. An evaluation device receives a number of sequentially determined distances in the course of a rotation of the measurement probe.

Abstract: An arrangement for measuring fill level of a fill substance in a container, comprising: a fill level measuring device, wherein the device includes measuring device electronics and an antenna connected to the measuring device electronics; and at least one feedthrough installed in a signal path of the microwave signals or the reflection signals; the feedthrough. The feedthrough comprises a hollow conductor, into which a microwave transparent window is inserted gas tightly. The window comprises: a disk, whose thickness corresponds approximately to a half wavelength or a small integer multiple of the half wavelength of a first, hollow conductor propagation capable, signal mode of the microwave signals at a predetermined signal frequency in the disk; and two matching layers located on oppositely lying, outer surfaces of the disk.

Abstract: A level detector 100 includes a sleeve 210 mountable to a vessel and extendable through a wall 212 defined by the vessel 212A and into an interior area 214 defined by the vessel. The sleeve 210 is mountable at an angle A of less than forty-five degrees relative to the vessel wall 212. The level detector 100 includes a level sensing probe 230 extending into a bore defined by an inside surface 218 of the sleeve 210. The level sensing probe 230 is configured to measure a plurality of foam and aerated slurry levels in the vessel 212A. One or more connectors 232, 244 are positioned outside 212B of the vessel 212A to removably support the level sensing probe 230 within the bore. The level sensing probe 230 is in communication with the interior area 214 via one or more openings 254, 258 extending into the bore.

Abstract: A sniffing leak detector which comprises a first suction line in a sniffing probe, the line leading to a main device, is provided with a larger second suction line through which gas is sucked in from the sniffing tip by a gas delivery pump. By connecting the second suction line, the distance sensitivity is increased. By disconnecting the second suction line, on the other hand, the sensitivity is increased. Thus, it is possible to first search for leaks by use of a high gas throughput and subsequently exactly determine the leaks under the quantitative aspect by use of a reduced flow.

Abstract: The change in a contact over time is stabilized by lowering intense wear of the contact in the initial sliding stage and imparting stabilized wear characteristics from the initial sliding stage. The contacts (33, 34) of a sliding body (30) have flat tops which contact conductive segments (23) and come into surface contact with the top portions of the conductive segments (23) when the contacts slidingly contact onto the conductive segments (23).

Abstract: A method for detecting leak from a fuel vapor treating apparatus defining a first area including a fuel tank and a second area including an adsorbent canister has hermetically closing the first area, measuring internal pressure of the first area, comparing an absolute value of differential pressure between the internal pressure of the first area and the atmospheric pressure with a predetermined value, measuring the internal pressure of the first area in a case that the absolute value is equal to or higher than the predetermined value in order to check for leaks from the first area based on changes in the internal pressure of the first area, fluidly communicating the first area with the second area in order to equilibrate internal pressures of the first area and the second area, hermetically closing the second area, and measuring the internal pressure of the second area in order to check for leaks from the second area based on changes in the internal pressure of the second area.

Abstract: A method of operating a process a combustion analyzer having a measurement cell is provided. The method includes exposing the measurement cell to exhaust of a combustion process where fuel and oxygen are combined in a burner to produce a flame. The measurement cell is heated to a temperature above a flashpoint of the fuel. When a condition is detected, such as a fault or abnormal situation, gas is directed to the measurement cell to form a gaseous barrier between the measurement cell and unburned fuel while the detected condition exists. Once the condition abates, the gas flow is disengaged and process combustion gas measurements are provided.

Abstract: The sensor element, which can detect the concentration of a specified gas, is held with a housing with a front end thereof exposed. A protective cover includes an inner cover and an outer cover, and secured to the housing. A ratio ?1/?2 is set to a range from 0.6 to 0.9, where ?1 represents an outer diameter of a portion where an inner gas aperture is formed in the inner cover, and ?2 represents an inner diameter of a portion where an outer gas aperture is formed in the outer cover.

Abstract: A liquid level detecting apparatus is provided. A resistance plate has a plurality of elongated conductive segments arranged therein. A float is configured to be moved upward and downward depending on a displacement of a liquid level to be measured. A floating arm has one end attached to the float and the other end rotatably supported to be rotated in response to upward and downward movements of the float. A contact is configured to be slid on the plurality of conductive segments in association with a rotation of the float arm depending on the liquid level. The plurality of conductive segments comprise a plurality of first segments made of a first metal material containing at least silver (Ag) and palladium (Pd), and a plurality of second segments made of a second metal material essentially containing gold (Au).

Abstract: The present invention relates to a test specimen for testing the through-thickness properties of a fiber-reinforced composite material. The specimen comprises a first loading portion having a first longitudinal axis in a first plane and a second loading portion having a second longitudinal axis in a second plane. The first and second planes are substantially parallel and the first and second axes are oblique. The first and second loading portions partially overlap to form a test gauge portion that is integral with the first and second loading portions. The first loading portion extends beyond the test gauge portion in opposite directions along the first axis and the second loading portion extends beyond the gauge portion in opposite directions along the second axis. This allows a force be applied to the test gauge portion through the first and second loading portions.

Abstract: A level sensor for determining the presence or absence of a liquid in contact with the sensor includes an elongate probe, a transducer operably connected to the probe and configured to produce compressional waves in the probe, and circuitry for detecting acoustic energy emitted into the liquid when liquid is in contact with the probe. A mount for the releasably holding the sensor includes a base have a receiving region formed in part by a plurality of flexible securing fingers. The fingers have locking projections extending therefrom. A contact is mounted to the base and extends into the receiving region. A cartridge supports the level sensor and is received in the receiving region. The cartridge includes a circumferential recess for receiving the securing fingers. When the level sensor is positioned in the cartridge and the cartridge is inserted into the base, the level sensor is operably connected to the contact and the cartridge is resiliently secured in the base.

Abstract: A container for holding a volume of fluid and having a housing defining an interior for retaining the volume of fluid; at least one in-tank tilt sensor connected to a controller and disposed inside the housing for generating a signal corresponding to a level of fluid inside the housing; and a support material attached to the housing and connected to the at least one in-tank tilt sensor to mechanically support the at least one in-tank tilt sensor such that the at least one in-tank tilt sensor is not in direct contact with the fluid inside the housing. The in-tank tilt sensor detects a change in fluid level which may only be caused by tilting of the imaging device. When tilting is registered, protective action is taken to prevent fluid from leaking.

Abstract: A method of operating a process a combustion analyzer having a measurement cell is provided. The method includes exposing the measurement cell to exhaust of a combustion process where fuel and oxygen are combined in a burner to produce a flame. The measurement cell is heated to a temperature above a flashpoint of the fuel. When a condition is detected, such as a fault or abnormal situation, gas is directed to the measurement cell to form a gaseous barrier between the measurement cell and unburned fuel while the detected condition exists. Once the condition abates, the gas flow is disengaged and process combustion gas measurements are provided.

Abstract: A method includes lowering a sensor unit in a tank, where the tank is capable of receiving a material. The method also includes determining a first distance between the material and the sensor unit and determining a second distance between the sensor unit and a main unit that lowers the sensor unit. In addition, the method includes determining a level of the material in the tank using the first and second distances. The method could further include calibrating the sensor unit to compensate for variations in a medium within the tank, where the sensor unit transmits wireless signals through the medium to determine the first distance. Determining the first distance could include using an ultrasonic measurement technique, and determining the second distance could include using a non-contact servo measurement technique.

Abstract: A control method of a filled water volume in a fluid space requiring a water filling test is disclosed. The method includes disposing a pipe in the fluid space and enclosing the pipe with an enclosure, detecting pressure of a water filled portion in the fluid space or outside of the enclosure, and controlling the volumes of filling fluid and water to a water filling portion in the fluid space inside and outside the enclosure based on the detected pressure such that the pressure in the enclosure becomes higher than the pressure at the water filling part in the fluid space outside the enclosure.

Abstract: An apparatus for measuring a concentration of CO2 for a vehicle may include an indoor panel of a vehicle in which an air inlet is mounted, and a CO2 sensing unit mounted in the indoor panel, including a light emitting unit, a light receiving unit, and a case surrounding the light emitting unit and the light receiving unit so as to reflect and move light on a plane, and vertically introduced with air introduced into the inlet with respect to the plane on which light moves.