There is no “ideal” sensor principle. Of particularly great importance and widespread use are resistive sensor technologies, due to their reliability. For electronic pressure sensors, WIKA is using metal thin-film and piezo-resistive sensors. Each of the two …
Pressure sensor
What is an electronic pressure switch?
Sabine Mai | Know-howAs soon as a preset pressure is reached, an electronic pressure switch opens or closes a corresponding switch contact. There are various designs of electronic pressure switches which are used in a multitude of industrial and technical processes. Particularly in machine …
Difference of 4-20 mA in 2-wire and 3-wire technology in pressure sensors
Michèle Beyer | PressureWhat exactly is the difference between the 4-20 mA output signal in 2- and 3-wire technology? This question is answered best from the viewpoint of the user: An output signal in 2-wire technology means: less wiring required better EMC protection, since …
Autofrettage in pressure sensors ensures zero-point stability
Eugen Gaßmann | PressureIn the manufacturing operation of pressure sensors, autofrettage denotes the process of active "overload" by subjecting the pressure sensor selectively once or several times to a pressure above the nominal pressure range . This process is applied, in order to achieve …
How does a pressure sensor behave in the overload area, that means outside the measuring range?
Anna Gries | PressureI have often been asked about the behaviour of a pressure sensor outside the specified measuring range, that means in the overload area and what will happen if the overload limit of a pressure sensor is exceeded. This fact is described as follows in the book …