Abstract: A retrofit unit for retrofitting a fire extinguisher, the retrofit unit including a body portion, having a connector for connection to the fire extinguisher, an electronic pressure sensor, connected to the body portion, and adapted to sense pressure within the fire extinguisher, a processor adapted to control operation of the pressure sensor and to receive at least one pressure signal sensed by the electronic pressure sensor, a power source adapted to provide power to the processor and to the electronic pressure sensor. The retrofit unit may be fitted onto a fire extinguisher for measuring pressure therein, instead of, or in addition to, a mechanical pressure gauge.

Abstract: The present invention refers to a device for detecting the pressure of compressed gas cylinders in breathing apparatuses for scuba diving which can be powered by means of a battery, provided with a pressure sensor. The device allows the housing of sensors with sufficiently large dimensions, guaranteeing precise gas cylinder pressure readings. Furthermore, the elements that guarantee the watertight seal of the device can be replaced in a practical effective manner.

Abstract: A built-in calibration sub-system of, or an auxiliary device to be used with, a normally closed water supply control system of the type that uses a single pressure sensor and a pressure decay versus time measurement to make volumetric flow determinations for water supply control purposes, including leak detection and flood risk mitigation is provided. The present disclosure provides a system that uses an auxiliary electrically actuated valve and an orifice to cause a controlled flow of water to discharge from a plumbing network over a pre-determined pressure range such that the normally closed water supply control system's microprocessor can calculate the calibration factor it needs that relates change in pressure over time to volumetric flow rate. Methods of calibration and testing of the leak detection feature of a normally closed water supply control system are also provided.

Abstract: An automatic liquid transfer optimization pipetting apparatus and method is disclosed. Namely, a liquid handling apparatus includes a pump supplying a nozzle (i.e., a pipette tip) via a conduit, one or more pressure sensors, and an electronic controller, and wherein the pipette tip is submerged in a liquid. Further, a method of automatic liquid transfer optimization pipetting includes the steps of actuating the pump to move a designated volume of liquid and then allowing the system to settle to a steady state after completion of pump actuation.

Abstract: For equipment in a production facility, information for more appropriately determining a state of the equipment is presented. The information processing device: receives information indicative of a state of equipment in a production facility (S202); carries out a process of outputting, when the received information indicative of the state of the equipment satisfies a first condition, a first alarm for prompting maintenance of the equipment (S204); carries out a process of outputting, when the information indicative of the state of the equipment satisfies a second condition, a second alarm that indicates occurrence of abnormality or a sign of abnormality in the equipment (S206); and carries out a process of outputting, in a distinguishably recognizable manner, a tendency in which the first alarm is outputted and a tendency in which the second alarm is outputted (S207).

Abstract: A vehicle fluid supply system includes a fluid supply valve configured to control fluid flow from a vehicle fluid supply to a trunk conduit in fluid communication with a vehicle tire inflation system; and a lift axle valve configured to control fluid flow from the trunk conduit to a lift axle deployment system.

Abstract: An electromagnetic device comprises an enclosure, at least one winding in the interior of the enclosure, at least one wireless sensor attached to the winding for sensing at least one property or deficiency of the electromagnetic device and at least one active communication unit comprising transceiving circuitry and at least one antenna, wherein the transceiving circuitry is placed on the exterior of the enclosure and the least one antenna is placed inside the enclosure for communication with the at least one sensor, wherein the at least one sensor comprises at least one sensor attached to the winding, and wherein the at least one sensor attached to the winding is a printed electronic sensor comprising electronics printed on an insulating substrate, where the substrate faces the at least one winding.

Abstract: An apparatus, system, and method according to which a user is trained in flange and gasket assembly. A simulator models placing a gasket in between a pair of flanges and inserting a plurality of bolts into the pair of flanges. The user simulates tightening one or more of the plurality of bolts, in accordance with a particular tightening pattern, in order to create a proper seal, although the user may tighten the bolt in any order. The simulator provides simulated stress values for each bolt in the plurality of bolts to guide the user in proper flange and gasket assembly. The simulated stress values are based on an empirical, mathematical model and take into account elastic interactions between bolts. The assembly training ends when the user completes the tightening pattern or makes an irreversible error. The user is then provided with a score.

Abstract: A tire radius monitoring system for dynamically determining a tire effective radius for each of the wheels on a vehicle is described. The system includes a GPS sensor, a plurality of wheel speed sensors, and a controller. The controller determines, via the GPS sensor, a velocity vector related to longitudinal velocity of the vehicle. The controller determines wheel speeds for the plurality of vehicle wheels, and detects a no-wheel-slip state for the vehicle wheels and the velocity vector from the GPS sensor. The controller determines tire effective radii for the plurality of vehicle wheels based upon the velocity vector for the vehicle and the wheel speeds for the plurality of vehicle wheels during the no-wheel-slip state, and controls vehicle operation based upon the tire effective radii.

Abstract: An inclination sensor for determining an angle of inclination relative to the gravitational vector includes comprising a fluid container and a first pressure sensor pair configured to measure a hydrostatic pressure in the connecting fluid. Temperature sensors are assigned to the sensors. A processor is configured to determine: a relative height (h) in the direction of gravity between the pressure sensors, an angle of inclination with respect to the gravitational vector based on the determined relative height (h) and the fixed locations of the pressure sensors, and relative height in the direction of gravity and the angle of inclination, also based on the measured temperatures.

Abstract: Geothermal two-phase flow metering device and measurement method in geothermal well and large diameter pipelines are disclosed herein. The method thereof is measuring the enthalpy and mass flow rate of the two-phase fluid in real-time. The device mainly includes a primary, a secondary and a multi-tapping pressure components. The primary component can be an Orifice plate or Nozzle or Venturi tube. The secondary component is a transmitters-transducers. The multi tapping pressure used are radius, flanges, and corners. The example system includes data signal of upstream pressure, downstream and the pressure difference of the multi tapping is recorded and calculated in the flow computer machine. A flow meter has good accuracy with less noise for a wide range of wells output and pipeline size range, which is very useful for the geothermal industry.

Abstract: An electrical connection enclosure (100) is supplied with electrical power by power supply cables (102) and supply at least one electrical load (104). The enclosure comprises a power supply column (106) and at least one connection column (110). Each connection column comprises at least one monitoring-and-control unit (138) connected to an electrical load, electrically protected by a protection unit (140) and configured to allow the connection and potentially the driving and/or the surveillance of an electrical load. The electrical enclosure is controlled by an industrial computer (130). Each connection column comprises a communication module (134) which centralizes operating information originating from the monitoring-and-control units of that connection column, transmits this operating information to the industrial computer, receives commands originating from the industrial computer and transmits these commands to the monitoring-and-control units of that connection column.

Abstract: Embodiments of this application disclose a vehicle control method and device, where the method includes: calculating a longitudinal force interference compensation torque and a lateral force interference compensation torque of a vehicle when a flat tire occurs in the vehicle; calculating a feedback control torque of the vehicle; determining an additional yaw moment based on the longitudinal force interference compensation torque, the feedback control torque, and the lateral force interference compensation torque; and controlling, based on the additional yaw moment, a wheel in which the flat tire occurs.

Abstract: An electrode arrangement is described that is configured to be coupled to a high voltage source for a dielectric barrier discharge plasma treatment of an irregularly three-dimensionally shaped surface of an electrically conducting body. The three-dimensionally shaped surface is used as a counter electrode. A first planar electrode is coupled to the high voltage source via a first lead, fitted to the object to be treated and brought in contact with a dielectric. A second electrode is contacted with the surface to be treated as reference electrode. The second electrode is provided in an edge portion that is circumferential to the first planar electrode and configured to be coupled to a reference voltage source via a second lead. An isolating cover layer covers the electrode and a third electrode covers the isolating cover layer as a ground electrode.

Abstract: An agricultural vehicle is operable in a first state for transport and in a second state for field work and includes a frame supported by a plurality of tires. A processor is operable to receive a signal generated as a result of the agricultural vehicle transitioning from the first state to the second state or from the second state to the first state. A gas system is operable to modify the tire pressure of the plurality of tires of the agricultural vehicle in response to the signal.

Abstract: A magnetic flowmeter includes at least one coil configured to generate a magnetic field within a process fluid flow. A pair of electrodes is configured to detect an electromotive force within the process fluid flow in response to the magnetic field. Measurement circuitry is operably coupled to the pair of electrodes and configured to provide an indication of the detected electromotive force. A processor is coupled to the measurement circuitry and is configured to receive the indication of the detected electromotive force and an indication of process noise. The processor is configured to change a dead time parameter based on the indication of process noise and provide a process fluid flow output based on the indication of detected electromotive force and the dead time parameter.

Abstract: In determining an in-cylinder pressure by analyzing a secondary current detected by a secondary current detection resistor, an engine controller is configured to detect an engine revolution speed and a discharge duration during which the secondary current flows. The discharge duration is correlated with a gas pressure between electrodes of a spark plug at ignition timing, that is, an in-cylinder pressure, and is different depending on the engine revolution speed. The engine controller is further configured to estimate the in-cylinder pressure at ignition timing based on the engine revolution speed and the discharge duration. An amount of time-dependent change in mechanical compression ratio, caused by accumulation of deposits, is detected based on the estimated in-cylinder pressure at ignition timing.

Abstract: Condition based engine parts (e.g., movable engine parts) monitoring is disclosed. The techniques may enable detecting cracks present in engine parts while the engine is operational. In one embodiment, a system includes a wireless sensor configured to be disposed on a movable part internal to a machine and communicate wirelessly and a controller that includes a processor. The processor may be configured to initiate communication with the wireless sensor by receiving a wireless signal indicative of a frequency of vibration of the internal movable part from the wireless sensor, to obtain an acceptable threshold range of vibrations for the internal movable part from one or more data sources, to determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the internal movable part, and to initiate preventative actions when the frequency is not within the acceptable threshold range.

Abstract: A method for producing a tire for a motor vehicle includes estimating a laden radius Rl of the tire using a formula having a form of: R l = R 0 - Fz Kzz + R V × V 2 - ( R Y ? ? 1 Pg + R Y ? ? 2 ) × ? Fy ? + R ? × ? ? ? , where KZZ has a form of: KZZ=KZZ 0+KZZp×Pg.

Abstract: A control valve testing method comprises steps: providing a testing device, inputting data in the testing device, electrically connecting the testing device to the location transmitter installed on the control valve, the transmitter connected with a pointer of a valve spindle, the testing device providing an electric current with a testing opening to an electric current air transformer, the electric current air transformer controlling air compressor applying a specific pressure according to the current on the control valve for triggering a valve spindle action to drive the location transmitter to obtain valve spindle action strokes data, transferring the data and performing a comparison between the data with the previously inputted actual opening data for analyzing the error percentage of the actual opening and the testing opening. If the error percentage is within a tolerance range, the result is qualified, and if not, the result is not qualified.

Abstract: Methods and systems for diagnosing vehicle systems using vehicle sounds, vibrations, or both, are provided. In one embodiment, a system comprises one or more sensors and a processor. The one or more sensors are configured to measure a sound, a vibration, or both, produced by one or more vehicle components. The processor is coupled to the one or more sensors. The processor is configured to compare the measured sound, vibration, or both with an expected sound for the one or more vehicle components, generating a comparison; and diagnose a vehicle system or device using the comparison.

Abstract: An apparatus for determining a driving situation of a vehicle to be monitored is disclosed. The apparatus comprises a provider configured to provide measurement values, wherein the provider is configured to obtain the measurement values at non-equidistant sampling instants, wherein the measurement values comprise information relating to the driving situation of the vehicle to be monitored. The apparatus further comprises an evaluator configured to evaluate a plurality of the measurement values with respect to a measure indicating a temporal variation of the plurality of measurement values.

Abstract: A computerized method for simulating a fluidized state of a plastic material in a chamber, comprises steps of: generating a chamber model which is a finite volume model of the chamber; defining a material model of the plastic material; defining a gas-phase model of gas; and making a flow calculation of the material model and the gas-phase model which are in the chamber model, wherein the material model is provided with viscosity of the plastic material, and the gas-phase model is provided with viscosity which is more than the actual viscosity of the gas.

Abstract: A process transmitter includes a sensor for producing an analog process signal as a function of a process parameter. The uncompensated analog process signal is digitized by an A/D converter and digitally compensated by a digital processor. The digitized signal from the analog-to-digital converter is also band pass filtered. The digitally compensated signal and the band pass filtered signal are combined to produce a transmitter output.

Abstract: An indicator of an estimated remaining life of an associated spring device can include at least one sensor and at least one processor. The at least one sensor can be operative to generate a signal having a relation to at least one of a usage condition and an environmental exposure condition of a spring device. The at least one processor can be communicatively coupled with the at least one sensor and programmed to receive signals from the at least one sensor, derive data from the received signals, and determine an estimated remaining life of at least the spring device using the data and an expression modeling a relationship between an estimated remaining life of the spring device and at least one of a usage condition and an environmental exposure condition. A gas spring and indicator assembly, a suspension system and a method are also included.

Abstract: A configuration is adopted where elastic members made of expanded rein beads and having a size covering air cushions are disposed between a skin member and the air cushions of a human body supporting device. By arranging a plurality of elastic members made of expanded rein beads and in a stacking manner, preferably, arranging two elastic members made of expanded resin beads, spring constants of the elastic members obtained from load-deflection characteristics when they are pressed to a deflection amount of 1 mm by a pressing plate with a diameter of 30 mm being higher than that of the air cushion and being different from each other, a biological signal can be transmitted to the air cushions without damping the biological signal, though the elastic members made of expanded rein beads and are provided.

Abstract: An apparatus for determining a state parameter of an object to be monitored includes a means for providing a plurality of measurement values, wherein the measurement values include information relating to the state parameter of the object to be monitored, a comparison means for comparing the measurement value to a predeterminable comparison parameter, wherein the comparison means is formed to output a first comparison signal when a predeterminable number of measurement values falls below the comparison parameter within a measurement interval, or to output a second comparison signal when the predeterminable number of measurement values exceeds or reaches the comparison parameter, wherein the first comparison signal or the second comparison signal indicate the state parameter.

Abstract: Pipetting errors are detected by: (a) during pipetting, measuring the pressure in the tip of a pipetting device and determining an earlier rate of change of the pressure in the tip; (b) based on the earlier rate of pressure change and a previous pressure value pi, determining an expectation range for the pressure pi+1 at a further moment in time and/or an expectation range for the rate of pressure change ?i+1 based on the pressure at the further moment in time ti+1; (c) at the further moment in time ti+1 measuring the pressure pi+1 in the tip; and (d) determining the occurrence of a pipetting error by comparing the measured pressure pi+1 at the further moment ti+1 in time and/or a rate of pressure change ?i+1 calculated on the basis of the pressure pi+1 at the further moment ti+1 in time.

Abstract: An identification system includes a plurality of sensing units, a storage module, a computing unit and an identification unit. The plurality of sensing units is for sensing a plurality of pressure values of a plurality of pressure points of a first object disposed on the plurality of sensing units. The storage module is for storing a set of characteristic information of a second object. The computing unit is electrically connected to the plurality of sensing units and for computing at least three distance characteristic values and at least three angle characteristic values after receiving the plurality of pressure values. The identification unit is electrically connected to the storage module and the computing unit for comparing the set of characteristic information with the at least three distance characteristic values and the at least three angle characteristic values, so as to indentify whether the first object corresponds to the second object.

Abstract: Apparatus and methods for sealing beverage containers are disclosed. In one embodiment, a beverage container cap for resealing a beverage container comprises a cap member and an inflatable member. The cap member has an interior side for sealingly coupling with an opening of a bottle. The cap member defines a pathway for selectively communicating gas through the cap member. For example, a pump can provide air through the pathway and to the interior side of the cap member. The inflatable member is configured to couple to the cap member and to expand in volume upon receiving gas from the pathway. The inflatable member includes a fluid impermeable layer and an elastic layer.

Abstract: The invention relates to a method for preparing models of technical devices, wherein each technical device comprises units that are connected to each other by means of connection point, wherein, when performing the method, at least one structure made of units connected to each other by means of connection points comprising commonalities for all technical devices is integrated and automatically described as at least one common module (8) for all models.

Abstract: A device and a method for aiding inflation for a vehicle involves obtaining access to vehicle tire pressure and temperature data, and utilizing an under-inflation detection module and an inflation condition testing module, thus making it possible to carry out a test for detecting a possible optimal inflation condition if the following criteria are met:—there is a non-critical under-inflation state for at least one of the vehicle tires;—the tires are not in an overheated state;—and the tire state is unchanged by sunlight. When the test module determines the optimal inflation condition, a signal is outputted. Such a method causes tire inflation to be carried out under favorable conditions actually corresponding to the reference value provided by the manufacturers.

Abstract: In indirect tire pressure monitoring of tires of a vehicle, the following steps and means to carry out the same, respectively, are contemplated: providing a tire classification database indicating at least one classified tire type; determining a vehicle tire type for the vehicle on the basis of vehicle data in including information on at least one tire currently used with the vehicle; determining whether the vehicle tire type can be associated to one of the at least one classified tire type; and, in the case an association is determined, monitoring tire pressure according to the associated classified tire type.

Abstract: A gas level display controller sequentially calculates a mass of a compressed gas stored in a tank and makes a comparison between a first calculated value obtained at a first timing and a second calculated value obtained at a second timing later than the first timing. When the second calculated value is smaller than the first calculated value, the gas level display controller makes the remaining amount of the compressed gas in the tank displayed on a predetermined display device, based on the second calculated value. When the second calculated value is not smaller than the first calculated value, the gas level display controller makes the remaining amount of the compressed gas in the tank displayed on the predetermined display device, based on the first calculated value.

Abstract: One disclosed feature of the embodiments is a control processor in a vapor delivery system for chemical vapor deposition precursors. A pressurization rate processor calculates first and second pressurization rate curves at first and second time instants. A volume calculator computes consumed volume based on first and second volumes at the respective first and second time instants. The first and second volumes are computed using slopes of lines fitting the first and second pressurization rate curves.

Abstract: A method, and corresponding device, for processing a pressure signal from a pressure sensor mounted in a combustion chamber to detect a combustion in an internal combustion engine. The method provides a pressure signal; filters the pressure signal with a filtration mechanism having a variable gain; generates an output signal representative of the filtered pressure signal; generates a signal representative of the error between the pressure signal and the output signal; and determines if the combustion has occurred during an expansion phase of the thermodynamic cycle.

Abstract: In order to judge the acceptability of internal pressure of a can accurately based on the displacement of the can, a pair of displacement sensors (2, 3) facing each other coaxially are arranged perpendicularly to the carrying direction of a carton case (C) such that the center of an encased can (K) being carried matches the center of the pair of displacement sensors (2, 3), measurement data of the displacement sensors (2, 3) is taken in at the timing that the center of the can (K) passes through the center of the pair of displacement sensors (2, 3), a total depth (Ds=Dt+Db) of a top depth (Dt) from the upper end of the can (K) to the open tab and a bottom depth (Db) from the lower end of the can (K) to the bottom panel is calculated, and then the calculation result is applied to a criterion for judging the acceptability of the total depth corresponding to the internal pressure of acceptable can.

Abstract: Certain embodiments of the present invention are generally directed to devices and methods for using pressure measurements to teach a robot a teaching point location. In certain embodiments, a method includes measuring pressure at multiple points across a target. A location of a robot teaching point is determined based on the measured pressure.

Abstract: A tire pressure measuring device is disclosed. The device includes a data generating impact module for striking a pneumatic tire, generating data correlative to the force imparted to the tire as a function of time and transmitting the data to a data gathering module. A data gathering module receives the data from the data generating impact module and communicates the data to a data processing module. A data processing module receives the data from the data gathering module, processes the data to determine the pressure of the pneumatic tire and communicates the determined pressure of the pneumatic tire to a tire pressure display. A tire pressure output display receives the determined pressure of the pneumatic tire and displays the calculated pneumatic tire pressure.

Abstract: The invention relates to an electronic pressure gauge for measuring the pressure inside a container, particularly a pressurized gas cylinder, said pressure gauge including: at least one pressure sensor; an electronic unit designed to acquire, store and process data; and at least one information device capable of transmitting at least one item of information. The pressure gauge also includes a first radio with a reception port, said first radio being connected to the electronic unit so as to receive external data in order to modify the operation or the configuration of the pressure gauge. The reception port of the first radio is designed to read data modulated in terms of the frequency and/or intensity of an external magnetic field at a first low frequency, for example a frequency between 50 and 300 khz.

Abstract: Method for monitoring the state of a tire, in which at least one analysis value (UR i), from which the state of a tire is determined, is formed from wheel speed signals (?rot i) of the vehicle wheels, wherein the analysis value (UR i) is an absolute rolling circumference of a tire or a variable which represents the absolute rolling circumference of a tire, in particular a dynamic tire radius which is determined by evaluating wheel speed signals (?rot i) and signals from at least one sensor in order to measure the speed of the vehicle over an underlying surface, and the analysis value (UR i) is used to determine a loss of pressure and/or working loads of the tire, as well as a device for monitoring the state of the tire.

Abstract: A system and method for improving energy usage and conservation of at least one air-management unit in a data center where a multiplicity of rack mounted power distribution units are used for power distribution to a multiplicity of electronic devices mounted on a plurality of racks in at least one computer room of the data center. A group of power load, temperature, humidity and differential pressure sensors are provided throughout the racks, and coupled to a computer through a network interface for automatically calculating multiple air-management effectiveness and energy efficiency indices (e.g., rack cooling index RCI, rack humidity index RHI, rack airflow index RAI, rack differential pressure index RPI and return temperature index RTI) based on the data from the sensors, such that the operation of the air-management unit can be adjusted accordingly to achieve an optimal efficiency of safe energy usage and conservation.

Abstract: The present invention relates to a system for detecting the remaining quantity of liquid hydrogen stored in a hydrogen storage device. In this system, the remaining quantity of liquid hydrogen is calculated accurately without being affected by the previous state in a tank. The internal pressure of the tank is detected. A fixed heat quantity is applied into the liquid hydrogen. The pressure in the tank after the application of heat quantity is detected. The volume of phase-transited hydrogen gas is calculated based on the heat quantity applied into the tank. The change amount of pressure in the tank before and after the application of heat quantity is calculated based on the pressure and the pressure. The remaining quantity of liquid hydrogen in the tank is calculated based on the volume of hydrogen gas and the change amount of pressure.

Abstract: In a plasma processing chamber, a method and an arrangement to stabilize pressure are provided. The method includes providing coarse pressure adjustments in an open-loop manner and thereafter providing fine pressure adjustments in a closed-loop manner. The coarse pressure adjustments are performed by rapidly re-position confinement rings employing an assumed linear relationship between the conductance and the confinement rings position to bring the pressure in the plasma generating region quickly to roughly a desired set point. The fine pressure adjustments are performed by at least employing mechanical vacuum pump(s), turbo pump(s), confinement ring positioning and/or combinations thereof to achieve a derive pressure set point.

Abstract: Systems and methods for prediction of gas turbine trips due to component failures such as electro-hydraulic valve (gas control valve) system failures. Exemplary embodiments include prediction of gas turbine trips due to component failures, the method including collecting raw gas turbine operational data and using the raw gas turbine operational data to generate a prognostic indicator for the prediction of a turbine trip due to the failed gas control valves.

Abstract: A motion controller includes a handle and a MEMS pressure sensing module. The handle has an output interface circuit for coupling with a terminal electronic device. The MEMS pressure sensing module includes a compressible member mounted on the handle, a MEMS sensor for sensing a pressure applied on the compressible member and converting the pressure into electronic signals, a processing unit for calculating a value of the pressure according to the electronic signals, and a power supply unit for supplying power to the processing unit. The processing unit is connected with the output interface circuit such that a user is able to obtain the pressure value from the terminal electronic apparatus.

Abstract: According to one embodiment of the invention, a method for preventing the failure of a system, which includes one or more pipes, or one or more cooling jackets, or one or more fluid cooled system components carrying a fluid, involves detecting one or more pressure levels of the fluid in the one or more pipes at one or more points, then comparing the detected pressure levels to a corresponding one or more predetermined limitation values. If the detected pressure levels exceed the corresponding limitation values, a shut-down signal is generated. The shut-down signal triggers the adjusting of one or more systems responsible for causing thermal variations of the fluid, preventing the system from failing while allowing the system to continue operation shortly thereafter.

Abstract: A compliance system for monitoring vapor pressures in storage tanks. Embodiments of the system include data collection systems associated with different storage tanks. Each data collection system collects atmospheric pressure, differential pressure of the tank over the atmosphere, and atmospheric temperature data on a continuous or near-continuous basis. Periodically, the data is transmitted to a host computer, which collects data from multiple data collection systems. The host computer may transmit the data to a web server that makes the data available to any computer via a world wide web interface.

Abstract: A device and method for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analysis and graphic display.

Abstract: A pressure sensor senses a pressure of a fuel vapor system at a fuel vapor passage. An electronic control unit executes a post-depressurization period flow diagnosis to determine whether the fuel vapor passage is clogged based on a behavior of the pressure in the fuel vapor system, which is sensed with the pressure sensor in a sealed state of the fuel vapor system after introduction of a negative pressure into the fuel vapor system.