Pressure sensor error inevitably

We choose the pressure sensor when we have to consider his overall accuracy of all pressure sensors are in fact errors exist , then the specific cause of the error , what is it , why is the inevitable errors . The offset error of the first : because the entire pressure range of the pressure sensor within the vertical offset constant , so proliferation and laser trimming correction inverter changes the offset error will be generated . Followed by the sensitivity error : error magnitude proportional to the pressure generated . If the device is more sensitive than typical values, sensitivity error will be an increasing function of pressure . If the sensitivity is lower than the typical values, then the sensitivity of the error will be a decreasing function of pressure . The cause of the error diffusion process is the change in the third linear error : This is an effect of the pressure Crankshaft Position Sensor Replacement is small initial error factors cause of this error is that the silicon physical nonlinear , but for a sensor with amplifier , also include the nonlinear amplifier . Linearity error curve can be concave curves , convex curves may be the load cell . Finally, hysteresis error : In most cases, the pressure sensor lag error is completely negligible , because silicon has a high mechanical stiffness , generally only in the case of large pressure changes considered hysteresis error . This four pressure sensor error is inevitable, we can only choose high-precision production equipment, using high technology to reduce these errors , but also in the factory calibration time for a little error , the maximum extent possible in order to reduce errors to meet customer needs .