What 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 interferences …
Pressure
Accuracy of pressure sensors – what ”precisely” does this mean?
| Sabine MaiHow is the accuracy of pressure sensors actually defined? The deviation of the actual characteristic curve from the ideal one is often referred to as “accuracy”. However, the term itself cannot be found in any national or international standard. This means that …
Autofrettage in pressure sensors ensures zero-point stability
| Eugen GaßmannIn 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 GriesI 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 …
What is the functional principle of a resistive pressure transmitter?
| Anna GriesThe functional principle of a resistive pressure transmitter is very simple. The pressure sensor converts the mechanical pressure value into a proportional electrical signal. The pressure sensor typically consists of a stable main body and a (thin) diaphragm. The …