How to debug pressure sensor to minimize the error?

When selecting a pressure sensor, we are going to consider his integrated precision, and the accuracy of pressure sensor is influenced by what way? In fact, there are many factors that can cause error of sensors, we pay attention to the below said four unavoidable error, this is the initial error sensors. First offset error: due to the pressure sensor in the entire vertical migration constant pressure scope, therefore diffuse converter changes and amendments to the laser conditioning will produce offset error. Followed by error sensitivity: produce error size is proportional to the pressure. If the device sensitivity is higher than the typical values, error sensitivity will be pressure increasing function. If the sensitivity is lower than the typical values, error sensitivity will be pressure decreasing function. The error reason lies in the diffusion process of change. The third is the linear error: this is an initial error of pressure sensor affected factors, the causes of the error is physical nonlinear of silicon, but for sensor band amplifier, should also include the nonlinear amplifier. Linear error curve can be concave curve, can also be a convex curve weighing sensor. Finally the lag error: in most cases, hysteresis error of pressure sensor is completely negligible, because silicon has high mechanical stiffness. Generally only in case of pressure change a lot considering lag error. The four error of pressure sensor is inevitable, we can only choose high precision production equipment, using high and new technology to reduce these errors, also can be in when they leave a certain error calibration, doing their utmost to reduce the error to meet the needs of the customers. 选择压力传感器时,我们应该考虑其综合精度,压力传感器的准确性,哪些方面的影响? 实际上,有许多因素导致传感器错误,我们应该注意以下四个不可避免的错误,这是最初的错误的传感器。 以来首次抵消错误:压力传感器的垂直偏移量保持不变在整个压力范围内,变换器扩散的变化和激光调整校正会产生偏移误差。 第二个是灵敏度错误:错误的大小成正比的压力。 如果设备的灵敏度高于典型值,灵敏度误差会越来越压力的函数。 如果灵敏度低于典型值,然后灵敏度误差将是减少压力的函数。 这个错误的原因在于扩散过程的变化。 第三是线性误差:这是一个小影响压力传感器的初始误差,误差是由于物理非 线性的硅晶片,但传感器和放大器,还应该包括非 放大器的线性度。 线性误差曲线可以是凹曲线或凸曲线称重传感器。 最后,滞后误差:在大多数情况下,压力传感器的滞后误差完全可以被忽略,因为硅片机械刚度高。 一般来说,我们只需要考虑滞后误差,当压力变化很大。 压力传感器的四个错误是不可避免的,我们只能选择高收入 精密的生产设备,采用高- 科技来减少这些错误,还在工厂进行一定的误差校正,尽量减少误差来满足顾客的需求。