Pressure sensor output is voltage, how can you know how much pressure?
The input pressure is calculated according to the sensitivity and output voltage of the pressure sensor.Suppose sensitivity S=1mV/psi, output U=10mV, then enter P is: P=U/S=10psi
Take the 154N pressure sensor in the United States for example:An electric bridge consisting of 4 resistors. When the external pressure is applied, the resistance is changed due to deformation, the two resistances become larger, the other two become smaller, and the balance of the bridge is destroyed. If the current of the bridge is constant, the voltage can be output. Since the output voltage is proportional to the pressure in a certain range, the pressure can be measured.It's easy to find his explanation on the internet.There are many types and types of pressure sensors, but of course they are different.
The instrument should have an instruction manual, where there is a "voltage pressure" conversion relation.
