What is the future of Endevco silicon pressure sensors and what are their respective part numbers?
What is the future of Endevco silicon pressure sensors, and what are their respective part numbers?
Endevco was one of the first companies to develop silicon pressure sensors. A major breakthrough came when Endevco introduced the sculptured diaphragm design that nearly doubles the sensitivity of the sensor.
The main advantage a silicon diaphragm affords is a very broad linear frequency response. Flor example, the 8511A series of pressure transducers utilize silicon diaphragms with resonant frequencies in excess of 1 MHz. This high level of resonant frequency allows the 8511A to have a linear (5%) frequency response from 0 Hz to approximately 200 kHz!
A related secondary advantage of micromachined silicon diaphragms is the ability to miniaturize a pressure transducer. Pressure transducers with stainless steel diaphragms are typically larger in overall size. The Model 8507C (Figure 1) and the Model 8515C (Figure 2) illustrate just how small these transducers can be.