Disclosed are an apparatus for measuring an in-situ crosslink density includes a support configured to fix or support a cross-linkable structure, a light source configured to irradiate light for crosslinking to the cross-linkable structure, and a probe configured to provide in-situ micro-deformation to the cross-linkable structure, wherein the in-situ crosslink density of the cross-linkable structure is measured from a stress-strain phase lag of the cross-linkable structure by the in-situ micro-deformation, a method of measuring the in-situ crosslink density, a method of manufacturing a crosslinked product, a crosslinked product obtained by the method, and a polymer substrate and an electronic device including the crosslinked product.

Encapsulation packages for stent-deployable monitoring devices formed of resonator sensors and allowing for magnetic biasing elements that exhibit a targeted impact on the mechanical characteristics of a stent are provided. Encapsulation packages are formed of different types and include a longitudinal shield and curved end on profile for aligning the shield within the deployable stent, the shield having perforations such that a resonator can be positioned adjacent the perforations for allowing particulate within the stent to collect and be measured by the resonator during deployment.

A method for monitoring the condition of a coil, wherein the coil is part of a device for determining at least one process variable of a medium in a container, includes applying an electrical excitation signal to the coil and receiving an electrical reception signal from the coil, determining a first value for the reception signal at a first predefinable measurement time, comparing the first value for the reception signal at the first measurement time with a reference value, and determining a condition indicator for the coil on the basis of the comparison. Disclosed also is a device that is designed for carrying out the disclosed method.

A method for monitoring the condition of a coil, wherein the coil is part of a device for determining at least one process variable of a medium in a container, includes applying an electrical excitation signal to the coil and receiving an electrical reception signal from the coil, determining a first value for the reception signal at a first predefinable measurement time, comparing the first value for the reception signal at the first measurement time with a reference value, and determining a condition indicator for the coil on the basis of the comparison. Disclosed also is a device that is designed for carrying out the disclosed method.

Provided is a viscoelasticity measuring method and a viscoelasticity measuring device which reduce the number of measurement points and simplify a device design. In order to achieve the object described above, in a viscoelasticity measuring method, a vibrator is immersed in a measurement liquid, a drive signal for driving the vibrator at a resonance frequency (f.sub.00) of the vibrator in the air is output, vibration of the vibrator is detected by a detection sensor, and a signal phase delay (Δ) of a sensor output signal of the detection sensor with respect to the drive signal is measured.

Provided is a viscoelasticity measuring method and a viscoelasticity measuring device which reduce the number of measurement points and simplify a device design. In order to achieve the object described above, in a viscoelasticity measuring method, a vibrator is immersed in a measurement liquid, a drive signal for driving the vibrator at a resonance frequency (f.sub.00) of the vibrator in the air is output, vibration of the vibrator is detected by a detection sensor, and a signal phase delay (Δ) of a sensor output signal of the detection sensor with respect to the drive signal is measured.

The present disclosure relates to a transducer comprising a tube, a converter unit, an electromechanical exciter arrangement for stimulating and sustaining forced mechanical vibrations of the converter unit, and a sensor arrangement for detecting mechanical vibrations of the converter unit and for generating a vibration signal representing mechanical vibrations of the converter unit. The converter unit includes two connection elements connected to a displacer element and is inserted into the tube and connected thereto. The converter unit is configured as to be contacted by a fluid flowing through the tube and enabled to vibrate such that the connection elements and the displacer elements are proportionately elastically deformed. The transducer can be a constituent of a measuring system adapted to measure and/or monitor a flow parameter of the flowing fluid and further includes an electronic measuring and operating system coupled to the exciter arrangement and the sensor arrangement of the transducer.

The invention relates to a rotational shear rheometer (1) comprising a first plate (10), a first flexure (11) pivotally connecting the first plate (10) to a support (60), a piezoelectric element (40) extending along a longitudinal axis (L) arranged tangentially in respect of the first plate (10), wherein said piezoelectric element (40) is configured to elongate and/or undergo compression along said longitudinal axis (L), and wherein said first end (41) is mechanically coupled to said first plate (10), wherein said first flexure (11) comprises a first flexural element (12) and a second flexural element (13) non-parallel to the first flexural element (12), wherein the first flexural element (12) and the second flexural element (13) connect said first plate (10) to said support (60), extend radially in respect of the pivot axis (P) and intersect with the pivot axis (P), wherein said piezoelectric element (40) is further configured as a sensor capable of detecting a torque acting on said first plate (10). Furthermore, the invention relates to a method for determining mechanical properties of a sample using the rotational shear rheometer.

A rheometer according to an embodiment includes a substrate on which an object to be measured is placed, a vibration unit configured to provide a vibration to the substrate, a plurality of probe units each including a quartz tuning fork and a contact member fixed to the quartz tuning fork, the contact member being able to contact the object, the plurality of probe units having different types of the contact members. Any one of the plurality of probe units is selected and contacts the object, and a controller configured to calculate a viscoelastic force of the object based on a vibration of the vibration unit and a vibration transmitted to the quartz tuning fork through the object from the vibration of the vibration unit.

A rheometer according to an embodiment includes a substrate on which an object to be measured is placed, a vibration unit configured to provide a vibration to the substrate, a plurality of probe units each including a quartz tuning fork and a contact member fixed to the quartz tuning fork, the contact member being able to contact the object, the plurality of probe units having different types of the contact members. Any one of the plurality of probe units is selected and contacts the object, and a controller configured to calculate a viscoelastic force of the object based on a vibration of the vibration unit and a vibration transmitted to the quartz tuning fork through the object from the vibration of the vibration unit.