A connector assembly and method of attaching the same to one or more biosensor module boards. The connector assembly includes a body portion defining a first surface and a second surface opposite the first surface. The connector assembly also includes a coaxial RF connector positioned in the body portion and extending between the first surface and the second surface. The coaxial RF connector includes a ground ring, an RF pin positioned within the ground ring, and dielectric therebetween. The connector assembly is configured to be coupled to an RF detection board such that the coaxial RF connector is operably coupled thereto. The connector assembly is also configured to be connected to a biosensor module board such that the coaxial RF connector is operably connected thereto.

A rapid ultrasonic dual-wave calibrated detection method includes: numbering a plurality of high strength bolts; searching, in a database in equipment, a calibrated empirical value R.sub.0e of initial ratios R.sub.0 of ultrasonic transverse wave transit time to ultrasonic longitudinal wave transit time for bolts with entirely or partially same specification data, or a calibrated empirical value k.sub.e of a slope k of variation of a bolt tension with a ratio of transverse wave transit time to longitudinal wave transit time; measuring ratios R.sub.i of the ultrasonic transverse wave transit time to the longitudinal wave transit time for the plurality of high strength bolts; acquiring a pretightening axial force value, and using the pretightening axial force value in place of an average value of tensions of the plurality of high strength bolts, calculating calibrated another parameter k.sub.e or R.sub.0e; and calculating axial forces of the high strength bolts.

A rapid ultrasonic dual-wave calibrated detection method includes: numbering a plurality of high strength bolts; searching, in a database in equipment, a calibrated empirical value R.sub.0e of initial ratios R.sub.0 of ultrasonic transverse wave transit time to ultrasonic longitudinal wave transit time for bolts with entirely or partially same specification data, or a calibrated empirical value k.sub.e of a slope k of variation of a bolt tension with a ratio of transverse wave transit time to longitudinal wave transit time; measuring ratios R.sub.i of the ultrasonic transverse wave transit time to the longitudinal wave transit time for the plurality of high strength bolts; acquiring a pretightening axial force value, and using the pretightening axial force value in place of an average value of tensions of the plurality of high strength bolts, calculating calibrated another parameter k.sub.e or R.sub.0e; and calculating axial forces of the high strength bolts.

A device for determining and/or monitoring a process variable of a medium includes a sensor unit having a mechanically oscillatable unit, a first piezoelectric element, a unit for determining and/or monitoring a temperature of the medium and an electronic system. The device is designed to excite the mechanically oscillatable unit and to receive the mechanical oscillations of the oscillatable unit, to convert them into a first receiving signal, to emit a transmission signal and to receive a second receiving signal, wherein the electronic system is designed to determine the process variable based on the first and/or second receiving signal. The unit for determining and/or monitoring the temperature includes a first and a second temperature sensor arranged at a distance from one another, and the electronic system is designed to determine the temperature of the medium based on a first and/or second temperature receiving signal.

A method of fabricating and controlling a thick-film transducer array for steering and focusing ultrasonic waves within a substrate volume is provided. A ceramic film composition can be coated on a substrate volume in one or more layers. The ceramic film can be masked with a plastic sheet out of which an electrode pattern is cut. Conductive electrode material can be applied to the pattern to create a transducer array that can be polarized with an applied electric field. A method of controlling a thick-film transducer array comprises exciting one or more array elements to generate a wavefield in a substrate volume, the wavefield can be reflected by features within the substrate volume, one or more array elements can receive reflected wavefield signals, and images of the insonified substrate volume can be generated.

A sensor device (1) comprises a piezoelectric transducer (3) and a base member (2). The piezoelectric transducer includes a piezoelectric member with at least one excitation electrode (37, 38) connected to a first face thereof and having a thickness (h) between the first face and a second face. The piezoelectric transducer (3) is attached to a supporting face of the base member (2) with the second face of the piezoelectric transducer positioned adjacent the supporting face of the base member. The base member includes at least one acoustic wave reflecting tag (21) distant from the piezoelectric member.

The present invention relates to a liquid information sensor comprises at least more than one electrode set including a first electrode, and a second electrode which is disposed spaced apart from the first electrode and to which an alternating current signal is applied between the first electrode and the second electrode; and a ferroelectric layer including a first side in contact with the first electrode and the second electrode and a second side facing the first side and defining a receiving area for receiving the target liquid, and generating sound waves by physical vibration when the AC signal is applied.

An ultrasound probe assembly comprises a housing and a wedge, wherein wedges configured for pipes of different diameter may be easily interchanged in the assembly. Four wheels are attached to the housing, there being a front wheel pair and a rear wheel pair. Wheels of each pair are positioned on either side of a linear probe array, wherein the distance between wheels in each pair in a direction perpendicular to the array length is as small as possible. A position encoder monitors the position of the assembly during scanning, and a push lock switch is used to disable the encoder and the data acquisition while indexing to a new scan position on the pipe.

A reference chamber for a fluid sensor comprises a housing, a deflectable structure, which is arranged movably within the housing, a control device configured to drive the deflectable structure at a first point in time such that the deflectable structure assumes a defined position, and to drive the deflectable structure at a second point in time such that the deflectable structure moves out of the defined position and a movement of the deflectable structure in the housing is obtained. The reference chamber comprises an evaluation device configured to determine a movement characteristic of the movement of the deflectable structure on the basis of the moving into the defined position or on the basis of the moving out of the defined position and to determine an atmospheric property in the housing on the basis of the movement characteristic.

An ultrasonic sensing device includes a housing, a piezoelectric assembly, a board and a plurality of fixing members. The housing includes a connecting board being a metal board and a supporting shell being a plastic member. The supporting shell includes a bottom wall opposite to a disposing opening of the connecting board and a surrounding side wall integrally surrounding and connecting to the bottom wall. The surrounding side wall encloses a portion of the connecting board. The piezoelectric assembly includes an encapsulating body and a piezoelectric sheet enclosed by the encapsulating body. The encapsulating body is disposed on the bottom wall and surrounded by the surrounding side wall. The piezoelectric sheet has a sensing surface exposed to the encapsulating body and facing the bottom wall. The fixing members fix the board on the connecting board, thereby pressing the sensing surface of the piezoelectric sheet to the bottom wall.