Abstract: A leak detection sensor includes a transducer, the transducer including a base, a piezoelectric layer, and a conductive layer and at least two leads connected to the transducer. A method of making a leak detection sensor includes obtaining a transducer, the transducer including a base, a piezoelectric layer, and a conductive layer; and effecting a mounting hole such that the mounting hole is defined in the transducer. A jig includes a support and a punch.

Abstract: The present invention provides for a method and device for monitoring an ambient humidity sensor in a combustion engine, where the monitoring of the ambient humidity sensor is made by comparing the ambient humidity measured by said humidity sensor and an ambient humidity determined from an oxygen measurement of at least another sensor in the engine system, such as a NOX, or Lambda and/or an oxygen sensor. Said comparison is made using an offset of the oxygen signal reading of said at least another sensor, in a fuel cut condition where the drift or offset of said another sensor is related to the variation of the ambient humidity.

Abstract: A viscosity measurement system, which is for measuring the viscosity of a fluid, comprises a transistor-type viscosity sensor, an electrical measurement unit, and a processing unit. The transistor-type viscosity sensor includes a semiconductor structure, a source terminal, and a drain terminal. The semiconductor structure includes a GaN layer and an AlGaN layer disposed on the GaN layer. The portion of the semiconductor structure that is between the source terminal and the drain terminal has a gate region, which has an exposed surface for being in contact with the fluid. The electrical measurement unit is in electrical connection with the source terminal and the drain terminal and for measuring an electronic signal of the semiconductor structure. The processing unit is coupled to the electrical measurement unit and for determining the viscosity of the fluid according to the electronic signal measured.

Abstract: An automated test apparatus for risk and integrity testing for pharmaceutical filtration membranes, including at least the following components: a liquid injection inlet, a pump, a fluid pressure gauge, a gas pressure gauge, a plurality of solenoid valves, a plurality of membranes, a gas pressure regulator valve, a pharmaceutical product bottle, and a bubble generation bottle. The automated test apparatus of the present invention is controlled by computer software in connection with an automatic pharmaceutical synthesis apparatus for automated testing. In use of the automated test apparatus of the present invention, it needs only to start the operating system of the automated test apparatus for membrane risk and integrity test after the completion of the automatic pharmaceutical synthesis. The membrane risk and integrity test can be accomplished in a short time by measuring pressures of gas and liquid with pressure gauges deposed online concurrently.

Abstract: A breath alcohol testing device has a removable tamper-resistant sampling chamber assembly that provides a disposable interface between the test subject and the alcohol sensor, other sensors and electronics of the testing device. Hydrophobic membranes prevent bodily fluids and other liquids from entering the alcohol sensor and other sensitive components of the testing device. A set of chambers with one-way valves direct the gas flow within the sample chamber assembly to ensure the breath sample delivered to the alcohol sensor is not diluted by the subject inhaling, and is a deep-lung breath sample.

Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. The apparatus includes a controller that diagnoses piston wear by driving the pump to achieve a predetermined pressure, stopping the pump with the piston in a home position, and measuring pressure at a preselected time interval after the step of stopping the pump. The amount of piston wear is approximated based on a difference between the predetermined pressure and the measured pressure at the predetermined time interval.

Abstract: Provided is a gas sensor comprising a gas-sensitive layer consisting of nickel oxide (NiO) doped with chrome (Cr) so as to selectively detect methylbenzene gas. The gas sensor, according to the present invention, has a gas-sensitive layer consisting of Cr-doped NiO. The gas sensor exhibits superior selectivity for methylbenzene gas when compared to other gases. The gas sensor can be easily and mass produced according to the production method of the present invention and is not affected by the microstructures of the material forming the gas-sensitive layer. The present invention relates to a gas sensor exhibits a negligible sensitivity of benzene, formaldehyde, and alcohol and exhibits significantly high selectivity and sensitivity of methylbenzene gas such as xylene and toluene when the NiO sensor material with a hierarchical structure favorable to gas dispersion and response is doped with Cr.

Abstract: A method for analyzing the exhaust gas of internal combustion engines provides for the cooling of the exhaust gas before analysis, the determination of the concentration of at least two different exhaust gas components in at least two separate analysis stages or the determination of the concentration of a single exhaust gas component with at least two different cooling stages. In order to achieve a higher measuring accuracy, at least one first cooling is carried out before a first analysis stage and at least one second cooling is carried out at a lower temperature than that of the first cooling before at least one further analysis stage.

Abstract: A paint stick and marker installation system for inserting a marker having shaft with a bottom end for inserting into the ground and an engagement portion of the shaft separated from the bottom end by an insertion portion of the shaft. The apparatus includes a magazine assembly configured to receive at least one marker. The magazine space has a push position in the magazine space for receiving the at least one marker. The apparatus further comprises a push assembly mounted on the magazine assembly. The push assembly is configured to engage the engagement portion of the shaft of the marker located in the push position and push the marker from the magazine assembly when the push assembly is actuated. A plurality of the markers are bonded together such that each of the markers can be removed from the rest of the plurality when inserting a marker into the ground.

Abstract: A hazard alert assembly for alerting an observer to a hazard includes a base structured to retain a flare on a support surface so the flare is visible to an observer. A frame is coupled to the base so the frame may be visible to the observer. The frame alerts the observer to a hazard. An arrow is coupled to the frame so the arrow is may indicate a direction the observer should travel to avoid the hazard.

Abstract: A pointing device includes a pointer having light guiding properties, a cap that is attached to the pointer and has light blocking properties, a pointing shaft that is vertically formed on a proximal end portion of the pointer, and a light blocking member. The light blocking member includes a cylindrical main body having both end portions for inserting the pointing shaft and a rotary shaft of a motor having light guiding properties respectively thereinto to prevent illuminating light propagating through the rotary shaft from a light source and entering the pointing shaft from leaking from an outer peripheral surface of the pointing shaft.

Abstract: A tamper-evident container closure device is provided. The device is securable to an open container to close the container. The closure device includes an electrically powered tamper-indicating means for indicating that the housing has been detached from the container after being secured to the container.

Abstract: A MEMS anti-phase vibratory gyroscope includes two measurement masses with a top cap and a bottom cap each coupled with a respective measurement mass. The measurement masses are oppositely coupled with each other in the vertical direction. Each measurement mass includes an outer frame, an inner frame located within the outer frame, and a mass located within the inner frame. The two measurement masses are coupled with each other through the outer frame. The inner frame is coupled with the outer frame by a plurality of first elastic beams. The mass is coupled with the inner frame by a plurality of second elastic beams. A comb coupling structure is provided along opposite sides of the outer frame and the inner frame. The two masses vibrate toward the opposite direction, and the comb coupling structure measures the angular velocity of rotation.

Abstract: Methods and apparatus for sterilization are presented. An exemplary embodiment includes a sterilizing cabinet assembly. The sterilizing cabinet includes a cabinet having an access port, a door connected to the cabinet, the door moveable between an open position permitting passage through the access port to an interior of the cabinet and a closed position precluding passage through the access port. The sterilizing cabinet assembly also includes at least one of the cabinet and the door having a vent port. The sterilizing cabinet has a primary filter overlying the vent port and forming a sealed interface with an adjacent portion of the one of the cabinet and the door and a secondary filter overlying at least a portion of the primary filter.

Abstract: An air purifier is presented with a sensor controlling a motorized fan, wherein the sensor continuously and automatically adjusts the sensitivity setting of the sensor as the quality of air being purified changes. The average air quality readings of the air passing through an air purifier are monitored over a designated time period and, as the quality fluctuates, the sensitivity of the sensor is automatically adjusted. If the air quality is poor (i.e. a high particulate count), the sensitivity of the sensor will be adjusted to a less sensitive setting (i.e. allowing higher fan speeds so that more air can be moved through the filter) and, if the air quality is good (i.e. a low particulate count), the sensitivity of the sensor will be adjusted to a more sensitive setting (i.e. setting a lower maximum fan speed because not as much air needs to move through the filter).

Abstract: A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detection subassembly including at least one leak detection sensor and at least one circuit.

Abstract: Methods, systems, and devices for estimating a parameter of interest of a downhole fluid. Methods may include using at least two solid acoustic transmission media, including a first media and a second media having different acoustic impedances and each having a corresponding face immersed in the downhole fluid. Methods may include using a reflection of an acoustic pulse from a solid-liquid interface at the corresponding face of the first media and the second media to estimate the parameter of interest. The sound speed and the acoustic impedance of the first media and the sound speed and the acoustic impedance of the second media may each be different than a sound speed and an acoustic impedance of the fluid and each other. The parameter of interest may be estimated independently of a time of flight in the downhole fluid of any acoustic pulses.

Abstract: Waste water assessment apparatus, a method and a computer program are provided. The waste water assessment apparatus comprises: transceiver circuitry configured to transmit a microwave signal and to receive one or more reflections of the microwave signal; and processing circuitry configured to process the one or more reflections of the microwave signal to determine one or more characteristics of waste water flowing through a conduit.

Abstract: A gauge assembly which has a gauge surface including graphics representing a vehicle operating parameter. A pointer arm is provided which is made out of a light guide or light transmitting material. The pointer arm includes a step portion in an operative portion of the second bottom surface for reducing light received by said second surface adjacent the step portion and providing an overall even light throughout the operative illuminated viewing surface of the pointer arm.

Abstract: A freeze indicator, which is preferably a self-activating freeze indicator. The freeze indicator has a substrate with a freeze indicator composition coated thereon wherein the freeze indicator has a liquid diacetylene; and a catalyst or catalyst precursor and a protective cover.