How can the signals of the two types of sensors be collected, and how is the operating voltage determined? Thank you very much.Question: how to correct signal we would like to ask resistance type sensor and current sensor was collected, and the working voltage is how to determine the reasonable, we how to correctly in the design selection (not limited to pressure sensor).
The resistance type pressure sensor outputs voltage signals, typically 0~10V;The current type pressure sensor adopts a current loop, and the output is 4~20mA current.
It's the same. It's all through sensors
Our common pressure sensor, the pressure sensitive element are resistive. Their conversion process is pressure change. The resistance change of pressure sensitive material changes to voltage change.The so-called "current type pressure sensor" only changes the pressure with the voltage into the current change output. Converted to current output for signal transmission over long distances.The pressure sensors, either voltage output or current output, will eventually be converted to voltage signals that will be sampled (measured) after A/D conversion. The current signal is converted into a voltage signal. It is simple to let current pass through a high precision standard resistor. The voltage at both ends of the resistor is applied to the voltage. The size of the resistor determines the magnitude of the converted voltage. How much voltage needs to be converted will need to be determined by the input characteristics of your A/D converter. The common voltage range is 0~2.5v, or 0~5v.
