A fluid sensor includes a tuning fork mechanical resonator including a base and a tine projecting from the base along a longitudinal direction of the tine, and a pair of electrodes disposed on the tine. The base and the tine are formed from a piezoelectric material including lithium tantalate. The electrodes are exposed to a fluid.

Sensor systems, sensors, and methods for detecting a presence and a phase of a medium on a surface are described. The sensor system has a power source providing a voltage; a sensing element in electrical communication with the power source, the sensing element including: two electrodes, wherein a gap is defined between the two electrodes, and a temperature measurement device disposed between the two electrodes; a fixed resistor in electrical communication with the power source and the sensing element; and a data acquisition system in electrical communication with the power source, the sensing element, and the fixed resistor. The sensor system measures the electrical resistance of the medium, and the temperature of the surface, and identifies the phase of the medium.

A sensor having a sensor head including a unibody construction, a first electrode, and at least one second electrode is provided. The first electrode can include a first pair of sensing elements coupled to each over via at least one bridge element extending from a first sensing element to a second sensing element. The at least one second electrode can include a second pair of sensing elements interleaved with the first pair of sensing elements. The second pair of sensing elements can be coupled to each other via at least one second bridge element extending from a third sensing element to a fourth sensing element. A method of manufacturing the sensor is also provided.

A sensor system, particularly for monitoring the mixing of at least two fluids and a method for monitoring the mixture of at least two liquids. The present invention provides a sensor system for fluids, comprising at least two level sensor which are arranged vertically one upon the other on and connected to an electronic circuit board, four electrodes of four conductivity sensors which are arranged horizontally next to each other at the bottom of and connected to the electronic circuit board; and a temperature sensor which is connected to the electronic circuit board; a connector for connecting the electronic circuit board to a controller; wherein the electronic circuit board is embedded in a hot melt compound which is surrounded by an injection molded housing.

A sensor system, particularly for monitoring the mixing of at least two fluids and a method for monitoring the mixture of at least two liquids. The present invention provides a sensor system for fluids, comprising at least two level sensor which are arranged vertically one upon the other on and connected to an electronic circuit board, four electrodes of four conductivity sensors which are arranged horizontally next to each other at the bottom of and connected to the electronic circuit board; and a temperature sensor which is connected to the electronic circuit board; a connector for connecting the electronic circuit board to a controller; wherein the electronic circuit board is embedded in a hot melt compound which is surrounded by an injection molded housing.

The present invention relates to a detector for measuring fluorescence in a liquid sample and to devices for biochemical analyses comprising it, in particular to devices for performing analyses of real time PCR. The detector of the present invention has a series of advantages such as drastic simplification of the detection configuration, reduced costs, better performances due to the greater freedom in planning the optical configuration which allows dividing the detector itself into independent areas.

The present invention relates to a detector for measuring fluorescence in a liquid sample and to devices for biochemical analyses comprising it, in particular to devices for performing analyses of real time PCR. The detector of the present invention has a series of advantages such as drastic simplification of the detection configuration, reduced costs, better performances due to the greater freedom in planning the optical configuration which allows dividing the detector itself into independent areas.

A thin film gas sensor device includes a substrate, a nanostructured thin film layer, and a first and a second electrode. The nanostructured thin film layer is supported by the substrate and is formed with a semi-conductor material including holes. The semiconductor material is configured to undergo an increase in a density of the holes in the presence of a target gas, thereby decreasing an electrical resistance of the nanostructured thin film layer. The first and the second electrodes are supported by the substrate and are operably connected to the nanostructured thin film layer, such that the decrease in electrical resistance can be detected.

A thin film gas sensor device includes a substrate, a nanostructured thin film layer, and a first and a second electrode. The nanostructured thin film layer is supported by the substrate and is formed with a semi-conductor material including holes. The semiconductor material is configured to undergo an increase in a density of the holes in the presence of a target gas, thereby decreasing an electrical resistance of the nanostructured thin film layer. The first and the second electrodes are supported by the substrate and are operably connected to the nanostructured thin film layer, such that the decrease in electrical resistance can be detected.

The present invention relates to the technical field of conductivity measurement electrode preparation, and specifically discloses a method for manufacturing a high-precision marine conductivity measurement electrode based on screen printing. The method of the present invention can realize the preparation of a conductivity measurement electrode with high precision, short preparation time and less drop-out of the electrode, thereby meeting the requirements of the current marine observation network for the high-volume and high-precision application of the conductivity sensor.