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2. Capacitive sensing - Wikipedia

   en.wikipedia.org/wiki/Capacitive_sensing

   Capacitive sensors are constructed from many different media, such as copper, indium tin oxide (ITO) and printed ink. Copper capacitive sensors can be implemented on standard FR4 PCBs as well as on flexible material. ITO allows the capacitive sensor to be up to 90% transparent (for one layer solutions, such as touch phone screens).

3. Capacitive displacement sensor - Wikipedia

   en.wikipedia.org/wiki/Capacitive_displacement_sensor

   Capacitive displacement sensors share many similarities to eddy current (or inductive) displacement sensors; however capacitive sensors use an electric field as opposed to the magnetic field used by eddy current sensors [10] [11] This leads to a variety of differences between the two sensing technologies, with the most notable differences being ...

4. Bubble sensor - Wikipedia

   en.wikipedia.org/wiki/Bubble_sensor

   The sensors allow the operator to set a size threshold for the size of the bubbles to detect. If the bubbles are below the threshold it is displayed to the user as microbubble activity. When a bubble equal to or greater than the threshold is detected an audio and visual alarm is generated and the arterial pump is stopped, this effectively ...

5. List of sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_sensors

   Water-in-fuel sensor; ... Capacitive displacement sensor; ... Speed sensors are machines used to detect the speed of an object, usually a transport vehicle. ...

6. Pigging - Wikipedia

   en.wikipedia.org/wiki/Pigging

   These probes are attached to the pig before it is sent through the polyethylene pipe to detect any defects in the outside of the pipe wall. This is done by using a triple-plate capacitive sensor in which electrostatic waves are propagated outward through the pipe's wall. Any change in dielectric material results in a change in capacitance. [17]

7. Piezoelectric sensor - Wikipedia

   en.wikipedia.org/wiki/Piezoelectric_sensor

   A piezoelectric sensor is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. The prefix piezo- is Greek for 'press' or 'squeeze'.