422results about "Volumetric apparatus damage prevention" patented technology

A temperature compensated RRAM sensing circuit to improve the RRAM readability against temperature variations is disclosed. The circuit comprises a temperature dependent element to control the response of a temperature compensated circuit to generate a temperature dependent signal to compensate for the temperature variations of the resistance states of the memory resistors. The temperature dependent element can control the sensing signal supplied to the memory resistor so that the resistance states of the memory resistor are compensated against temperature variations. The temperature dependent element can control the reference signal supplied to the comparison circuit so that the output signal provided by the comparison circuit is compensated against temperature variations. The temperature dependent element is preferably made of the same material and process as the memory resistors.

A liquid crystal display comprising first and second switching elements connected to a first signal line; a signal line pair including a second and a third signal line connected to the first and second switching elements, respectively; a first pixel pattern connected through a first connection terminal of the first switching element; a second pixel pattern connected through a second connection terminal of the second switching element; a storage electrode line overlapping with the first and second pixel patterns; and a repair portion for electrically connecting the first and second pixel patterns to each other through a repairing process.

The present invention provides a hybrid fluid flow meter pressure vessel assembly (1) that includes an interior housing (11) fabricated from plastic, and an exterior ring structure (26) fabricated from metal. Interior housing (11) has sidewalls (14) and an internal chamber (17). The sidewalls (14) of the interior housing (11) have first and second apertures (20, 23) that are each in fluid communication with the internal chamber (17). The exterior ring structure (26) encompasses at least a portion of an exterior (29) of the sidewalls (14) of the interior housing (11), and includes outwardly extending first and second conduits (38, 41) that are in respective fluid communication with the first and second apertures (20, 23) of the interior housing (11).

A device for detecting leaks of fluids includes means for metering flow of a fluid towards a premises, shut-off means for the fluid, operable between a delivery configuration of the fluid and a closed configuration to allow/prevent its transit towards the premises, and a management and control unit, able to act in conjunction with the metering means of the flow and to send a signal to the shut-off means to switch from the delivery to the closed configuration. The management and control unit comprises enabling means, able to allow or prevent the signal to be sent to the shut-off means. The device comprises, in addition, means for detecting the presence of a user in the premises, operatively connected to the enabling means in such a way that these allow the signal to be sent to the switch if the presence detector means detect the absence of the user in the premises.

The present invention is a water damage prevention system that has a residential or industrial/commercial facility water supply interruption system. The system is comprised of a remotely controllable base station with shut-off/on mechanism that is in wireless or wired communication with a convenient controller. The base station with shut-off/on mechanism is interposed within a water line from a water main to the living or operating quarters portion of a residential or a industrial/commercial facility or building, such that activation of the base station with shut-off/on valve operates to prevent flow of water from the water main to the living quarters when the residential home or industrial/commercial facility or building is vacated or unsupervised. In this manner, damage to the living quarters or the industrial/commercial facility or building from failure of water pipes running through the living or working quarters is prevented during times that the shut-off mechanism is activated.

A composite memory device, a data processing method and a data processing program can efficiently and selectively use a nonvolatile solid-state memory and a recording medium. The composite medium device includes a nonvolatile solid-state memory and a recording medium and is adapted to combine the data area of the recording medium and the data area of the nonvolatile solid-state memory and manage them as totally or partly integrated data area by means of a predetermined file system. The composite memory device is connected to a host appliance by way of an interface section.

A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that surrounds at least partially the filter insert. The elastically deformable casing part is a part of the lid member or of the outer member of the housing and is made of a thermoplastic synthetic material. When the liquid undergoes freezing and thawing in the filter unit, the elastically deformable casing part can compensate the volume changes caused by freezing and thawing.

A Coriolis flow meter for a drilling system measures flow from a wellbore and/or from at least one pump into the wellbore. The meter can be disposed upstream of at least one choke used for controlling backpressure, and/or the meter can be disposed between at least one pump and the wellbore. The meter has at least one flow tube adapted to vibrate and conducts the flow at a first pressure level from an inlet side to an outlet side. A vessel encloses the at least one flow tube at least between the inlet and outlet sides and holds a second pressure level therein about the at least one flow tube. The second pressure level can be equal to or nearly equal to the first pressure level to reduce or nearly eliminate a pressure differential across the at least one flow tube. For example, the second pressure level can be elevated above environmental relative to the first pressure level to reduce a pressure differential across the at least one flow tube. Alternatively, the second pressure level can be less than the first pressure level.

A system for evaluating a flow rate measurement includes a flowmeter and a diagnostic system. The diagnostic system is configured to perform a diagnostic test for detecting a physical change in the flowmeter that could impair operation of the flowmeter, output a result of the diagnostic test, evaluate a reliability of the diagnostic test using information about a process condition, and output an indication of the reliability of the diagnostic test.

A pitot tube includes an outer tube extending from a first tube end to second tube end. The second tube end defines a tip portion of the pitot tube. A tube sleeve is located inside of the outer tube and defines a tube passage extending from the first tube end to the second tube end. A heating element is located between the outer tube and the tube sleeve. The heating element is isolated from airflow into the tube passage. A method of forming a pitot tube includes installing a heating element to an outer surface of a tube sleeve, the tube sleeve defining a tube passage of the pitot tube. The tube sleeve is secured in an outer tube such that the heating element is between the tube sleeve and the outer tube and is isolated from airflow through the tube passage.

An apparatus for driving lamps and a liquid crystal display having the same, wherein the uniformity of luminance among lamps is improved, includes a main transformer unit for supplying a driving voltage to the lamps, and a balance transformer unit for making a lamp current of each of the lamps uniform. The balance transformer unit has a plurality of coils wound on a single body, and the coils have the same turns ratio and share magnetic flux so that a constant uniform current can flow through each of the coils. Accordingly, a lamp current of each of the lamps connected to the respective coils of the balance transformer unit can be maintained to be constant, and thus, the luminance of the lamp can be maintained uniformly.

This invention discloses one Ventura tube and flow guide tamper combination flow measurement device, which comprises flow save device and difference voltage conversion and display device, wherein, the flow save device is composed of guide flow tamper between throat direct section and tamper diffusion section; the venture tube guide tamper section is set with high voltage taker tube and low one.

The invention provides an antifreeze water meter box easy to install and dismantle. The antifreeze water meter box comprises a water meter box casing, protruded limiting barrels are fixedly arranged on the outer side surfaces of through holes in the two sides of the water meter box casing, semicircular rubber clamp rings are disposed at the inner upper ends and the inner lower ends of the protruded limiting barrels, a heating pipe is mounted in a cavity inside a mounting base plate, two side ends of a water meter body are fixedly clamped in arc-shaped grooves in the surface of a supporting plate through arc-shaped clamping plates, the middle of the upper surface of the water meter box casing is provided with an observation notch, and the surface of an eaves edge at the upper end of the observation notch is matched and connected with a thread cap. Two side ends of a water meter are fixed into arc-shaped grooves in the surface of the supporting plate through bolts II and two groups of arc-shaped clamping plates, the water meter can be mounted in the water meter box casing quickly and stably, the two groups of semicircular rubber clamp rings tightly clamp a water inlet pipe and a water outlet pipe, cold air can be prevented from entering the water meter box casing through slits of the through holes, and when the outdoor temperature is too low, the heating pipe is started, so thatthe water meter can be effectively prevented from being frozen.

A high temperature and pressure resistant ceramic sensor and its sealing solidification method has a positive lead of the ceramic plate connected with one end of the ceramic strain foil, encapsulation film at the rear side of the sensor shell, copper ring connected with both sides of the rear encapsulation film, rear end encapsulation film and ceramic strain foil, the other side of the ceramic strain foil connected with the front encapsulation film, the other end of the ceramic foil connected with the negative lead of the ceramic strain foil, and the negative lead connected to the strain foil fixed base copper ring. The sealing and solidification method comprises the solution cleansing, welding the electrode lead, constant temperature preheating, encapsulation, constant temperature heating, abrasion, and testing the capacity value. It is simple in structure, convenient in use, long in duration; with improved signal receiving width and repeatability, with the resistant temperature reaching 150DEG C, pressure 60 MPa, limitless durability, free from maintenance, applicable in fields with distortion signal measuring and down whole ultrasonic flow meter.

The invention relates to a mechanical fluid meter, for liquid or gas, comprising an electronic device (E) that has means for metering, and generally also displaying, consumption, said fluid meter including: at least one fluid temperature sensor (3) near the meter and at least one ambient temperature sensor (4) where the meter is installed; a connection means between the temperature sensors (3, 4) and the electronic device (E); and analysis means (5) for establishing the temperature difference ([delta]theta) between the fluid temperature and the ambient temperature and for taking into account the fluid flow rate value supplied by the meter, said analysis means being programmed so as to display and/or transmit information indicating a meter blockage when the temperature difference (??) is higher than a predetermined limit and the flow rate value supplied by the meter is zero.

The invention discloses a frost resistance water meter. The water meter comprises a shell body, a movement arranged in the shell body, an impeller assembly connected with the movement, and a meter glass plate and a flipping cover arranged at the top of the shell body. An inverted U-shaped transparent cover that is capable of preventing air inside the movement from discharging through the upper part of the movement is arranged outside the movement in a sealed mode. The frost resistance water meter has the advantages that a sealed transparent cover is additionally arranged outside the water meter movement, and therefore the air at the upper part of the water meter and in the movement can not be discharged from the upper part of the movement, water content in the water meter not exceed 95% is guaranteed, which is to say, an air cavity sealed by water is arranged in the transparent cover(upper part of the movement), a gas-liquid equilibrium state is reached in the water meter, and therefore water cannot enter the upper part of the movement(normally the water level is below a dial). When temperature reaches freezing point, because of the cavity arranged at the upper part of the water meter movement, ice expanses into the cavity when frozen, the ice cannot directly squeeze the meter glass and the shell body, frost damage of the meter glass and the shell body is avoided, and the function of frost resistance is achieved.