Abstract: Certain implementations of the disclosed technology may include systems, methods, and sealed transducer assembly with a pressure relief vent. In certain implementations, a transducer assembly is provided having a vent bore and a rupturable membrane sealing the vent bore. The vent bore may extend from an internal portion of the transducer assembly to an external portion of the transducer assembly. The rupturable membrane is configured to maintain a seal within the internal portion of the transducer assembly for a first range of a pressure differential between the internal portion of the transducer assembly and the external portion of the transducer assembly, and rupture and vent pressure through the vent bore when the pressure differential exceeds the first range.

Abstract: An image forming apparatus with a duplex printing function may include a closeable and openable portion. In one example, the portion may correspond to a cover of the image forming apparatus. The cover may include guiding portions configured to define a return path for duplex printing. In another example, the portion may correspond to a document reading unit including an outer casing. A portion of the outer casing may be configured to guide a recording sheet that is conveyed out of a housing of the image forming apparatus by a switchback roller. In one example, the switchback roller may convey a recording sheet to a position above an upper surface of the outer casing.

Abstract: An apparatus for evaluating gas barrier properties, containing a polymer-containing support for supporting a sample, a chamber on a permeation side, and a detection unit, in which the support is connected with an opening of the chamber on the permeation side, and in which glass transition point of the polymer contained in the support is 100° C. or higher.

Abstract: A method for characterizing properties of a porous sample that employs a test apparatus including a sample cell and associated pressure sensor having a configuration that measures pressure of the isolated sample cell. The porous sample is divided into a number of pieces, which are loaded into the sample cell. The test apparatus is configured to perform a sequence of test operations whereby the loaded isolated sample cell is filled with test fluid under pressure and the pressure sensor is used to generate and store pressure data over time. A data processing system processes the pressure data in conjunction with a computational model that includes a set of pressure curves with a number of curve-related variables and associated values in order to identify a matching pressure curve, and processes the variable values for the matching pressure curve in order to derive bulk properties of the porous sample.

Abstract: The invention relates to a method for determining and/or monitoring the air tightness of an enclosed room (2) which is equipped with an oxygen reducing system (1) and in the atmosphere of which at least one oxygen content that can preferably be determined in advance and is reduced in comparison to the normal surrounding air can be set and maintained in order to prevent and/or extinguish fires by introducing an oxygen-displacing gas. The oxygen reducing system (1) has a compressor system (4; 4.1, 4.2) for compressing an initial gas mixture and a gas separation system (3; 3.1, 3.2) downstream of the compressor system (4; 4.1, 4.2) for separating at least one part of the oxygen contained in the initial gas mixture and for providing a nitrogen-enriched gas which is supplied to the enclosed room (2). The differential pressure set in the room (2) is ascertained and compared to a corresponding reference value, whereby information regarding the air tightness of the room (2) is provided.

Abstract: An inspection method for inspecting the water resistance of an electronic device is provided, including providing a vacuum generator, using the vacuum generator to pump air out of the electronic device, stopping the pumping of air out of the electronic device when the air pressure in the electronic device is less than a predetermined pressure value, measuring the air pressure in the electronic device as a first pressure value after the pumping of air out of the electronic device has been stopped for a predetermined time, calculating the pressure difference D by subtracting a second pressure value from the predetermined pressure value, calculating the pressure difference d by subtracting the second pressure value from the first pressure value, and determining whether the electronic device is waterproof or not according to the pressure differences D and d.

Abstract: A multilayer ceramic capacitor includes a multilayer unit, thickness-direction first and second outer layer sections, and width-direction first and second outer layer sections. A dimension of the thickness-direction second outer layer section is greater than a dimension of the thickness-direction first outer layer section. The thickness-direction second outer layer section includes an inner portion and an outer portion. A composition ratio of Si to Ti in a ceramic dielectric layer included in the outer portion is higher than that in the inner portion. A Si content ratio is higher in a boundary portion between the outer portion and the inner portion. A relationship expressed by T1/(W0?W1)?6.95 is satisfied when a minimum dimension in the width direction of the body is denoted by W0, a minimum dimension in the thickness direction of the multilayer unit is denoted by T1, and a minimum dimension in the width direction of the multilayer unit is denoted by W1.

Abstract: An installation for testing open fire extinguishing systems includes a smoke and/or mist generator and a connecting conduit suitable and dedicated for being connected to a fire fighting system. A method for testing of fire extinguishing systems has the following steps performed in any suitable order: a) providing an installation for the generation of smoke and/or mist, b) connecting a conduit of the installation to a conduit of a first section of a preferably open fire extinguishing system, c) opening a valve which provides a connection between the first section of the fire fighting system and the connecting conduit of the installation, d) turning on the smoke and/or mist generator, such that, by the exiting of the smoke and/or mist, the spray heads of the first section of the fire extinguishing system can be inspected on their openness, e) repeating steps b-d for any further section of the fire extinguishing system.

Abstract: A biaxially orientated polypropylene film for capacitor includes protrusions on both surfaces. The biaxially orientated polypropylene film has a thickness (t1) of 1 to 3 ?m, has a ten point average roughness (SRz) of 50 nm or more and less than 500 nm on both surfaces, and meets equations (1) and (2) where one surface and the other surface are referred to as a surface A and a surface B, respectively: 150?Pa?400??(1) 50?Pb?150??(2) wherein Pa denotes number of protrusions per 0.1 mm2 on the surface A and Pb denotes number of protrusions per 0.1 mm2 on the surface B.

Abstract: An image reading device includes a plate on which a document to be scanned is placed, a cover that is movable between an open position and a closed position at which the cover contacts the document, a position detecting unit configured to detect a position of the cover, an imaging unit configured to emit light towards the plate and having an image sensor configured to detect light reflected by the document, and a control unit configured to determine a size of the document based on a detection result of the position detecting unit and a detection result of the image sensor.

Abstract: This fluid pressure sensor includes a coil the self inductance of which varies as a function of the pressure of a fluid inside the flexible pipe. This coil includes a turn including: a first portion and a second portion of its periphery rigidly mechanically connected to a first location and a second location on the periphery of the pipe, respectively, and third and fourth free portions of the periphery of the turn situated between the first and second portions and each on a respective side of a central axis of the pipe and each separated from the flexible pipe by a clearance.

Abstract: A pressure sensor device is to be positioned within a material where a mechanical parameter is measured. The pressure sensor device may include an IC having a ring oscillator with an inverter stage having first doped and second doped piezoresistor couples. Each piezoresistor couple may include two piezoresistors arranged orthogonal to one another with a same resistance value. Each piezoresistor couple may have first and second resistance values responsive to pressure. The IC may include an output interface coupled to the ring oscillator and configured to generate a pressure output signal based upon the first and second resistance values and indicative of pressure normal to the IC.

Abstract: A methodology and system determine properties of a sample substance, such as a liquid/foam used to control sweep homogeneity problems in an earth formation. The methodology and system utilize a core of formation simulation material placed in a container. An injection system is coupled to the container and enables placement of both the sample substance and an injection fluid into the container. The injection fluid is injected under pressure and moves the sample substance through the core. A data acquisition system is employed to measure parameters such as pressure differentials along the core as the sample substance propagates through the formation simulation material. The pressure differentials may be evaluated over time by the data acquisition system to determine fluid breakthrough properties of the sample substance.

Abstract: A method for characterizing properties of a manufactured rock sample that employs first and second test apparatus. The first test apparatus includes a sample holder and associated pressure sensors, wherein the sample holder allows for a pulse of test fluid to flow through the sample, and the pressure sensors measure pressure upstream and downstream of the sample as the pulse of test fluid flows through the sample. The second test apparatus includes a sample cell and associated pressure sensor, wherein the sample cell has a configuration where the sample cell is isolated and filled with test fluid under pressure and the pressure sensor measures pressure of the isolated sample cell. The first and second test apparatus are used to measure bulk properties of the sample. The sample is partitioned into pieces, and the second test apparatus is used to measure properties for different size-groups of such sample pieces.

Abstract: Disclosed is a method for manufacturing a sensor module that generates heat through an electric resistor adapted to be exposed to a gas, and outputs a temperature change caused in the electric resistor according to a pressure of the gas, as a resistance change of the electric resistor. The method includes: forming an insulation layer on a substrate in which the insulation layer is an oxide film or a nitride film; and forming a conductor layer on the insulation layer under a temperature condition of 300° C. to 600° C., in which the conductor layer serves as the electric resistor.

Abstract: A test apparatus (and method of operation) for characterizing properties of a sample under test (such as porous material, for example, samples of reservoir rock) that operates in conjunction with a source of test fluid. The test apparatus includes an intake valve fluidly coupled to the source of test fluid, a reference cell fluidly coupled to the source of test fluid via the intake valve, a sample cell that holds the sample under test, an isolation valve fluidly coupled between the reference cell and the sample cell, an exhaust port, an exhaust valve fluidly coupled between the sample cell and the exhaust port, a first pressure sensor associated with the reference cell for measuring pressure within the reference cell, and a second pressure sensor associated with the sample cell for measuring pressure within the sample cell. The method of operation includes calibration procedures to compensate for systematic measurement errors.

Abstract: A method of testing a pressurized liquid fluid for dissolved gasses includes evacuating both a first tank and a second tank. A test volume of a pressurized liquid fluid is introduced into the first tank. An initial absolute pressure in the second tank is sensed, and then fluid communication between the first tank and the second tank is opened to allow the pressurized fluid to flow from the first tank into the second tank, thereby de-pressurizing the fluid. The de-pressurized fluid in the second tank is maintained for a pre-defined out-gassing period, to allow any gasses in the de-pressurized fluid to separate from the de-pressurized fluid. A final absolute pressure in the second tank is sensed. A difference between the final absolute pressure and the initial absolute pressure is correlated to a volume of gasses released from the de-pressurized fluid.

Abstract: In a method of detecting defects generated in a honeycomb structural body, both end sections of the honeycomb structural body is sealed along a flowing direction of exhaust gas. Air is supplied in the flowing direction of the exhaust gas from one end section to the other end section of the honeycomb structural body. Microphones are arranged at outer periphery of the honeycomb structural body and detect sounds of air leaking from a skin layer of the honeycomb structural body. A judgment step judges whether or not defects such as holes having not less than a predetermined diameter and cracks are generated on the basis of a magnitude of the detected sounds of the leaking air.

Abstract: Disclosed is a pressure sensor that outputs a temperature change caused in an electrical resistor according to a pressure of a gas, as a resistance change in the electrical resistor. The pressure sensor includes: a base substrate including a recess formed therein, a floating film formed on the base substrate, a heater formed on a surface of the floating film and configured to heat the floating film when a current flows therein, and a temperature sensor formed as the electrical resistor on the surface of the floating film. The temperature sensor changes a voltage drop with respect to a current flowing therein according to the temperature of the floating film.

Abstract: A method and a device measure tribological values of samples with a rheometer. Wherein measuring parts of the rheometer are replaced by the samples and the surfaces of the samples are moved into frictional contact relative to each other. Accordingly, it is provided that all parts of the rheometer supporting the samples in frictional connection or frictional contact and forming the rheometer power circuit, including a spring unit pressing the samples against each other, are regarded as an oscillatory circuit. Oscillation properties of the spring unit are relevant to oscillation properties of the oscillatory circuit. The oscillation properties of the spring unit are adjusted taking into consideration resonance oscillations or effects produced by changing or different measurement conditions expected with the respective measurement.