The accuracy of weighing sensor to ring weighing system

by:Kaidi Sensors     2021-03-01
Choose high quality weighing sensor is weighing controller for each step of the weighing accuracy. Weighing sensors, Also known as the load sensor or transducer) Is a kind of the metal bending load mechanical force into electrical signal into mechanical force. Bending is less than the metal elastic, using the strain gauge measurement on the paste in point unit. It is the mechanical force and mechanical force curve and load a piece of metal processing is transformed into electrical signals. Weighing sensor factory engineer said: as long as the load applied to the appropriate location of the weighing sensor, strain gauge will provide electrical signal proportional. Hysteresis is reading the same load cell output on the difference between the load - By reducing the maximum rated capacity of the load from the load cell reading, while the other load increase. Under the condition of nonlinear, worst case for + 0. 025% of the rule of lag appear within the scope of the full range of the weighing sensor, reduced the lag error caused by the weight change. In ingredients such as application, usually only need to precisely measure when filling weight, can ignore lead to the delay error. The unrepeatable is in the same load conditions, namely increased from zero load or less maximum rated load from the load cell capacity) And environmental conditions between the repeat one of the biggest differences between load cell output readings. Not for repetitive index + 0. 01%, greater than the whole range of the weighing sensor. In any weighing applications, the unrepeatable will affect the weight measurement. The worst case the unrepeatable specification can be made of added an error to determine repeatability error of weighing sensor combination. The change in temperature, hard to avoid can also cause weighing error. However, if your weighing system in weighing cycle affected by large temperature change ( For example, if the outdoor weighing container is exposed to low temperature during the night, but the day the sun will quickly heating) , please consider how temperature affects the weighing sensor output. If the only significant changes affect the weighing system is between summer and winter temperatures, can recalibrate weighing sensor, to correct any temperature error caused by the seasonal changes. Pay attention to the response time of the weighing sensor. Weighing sensor manufacturer engineer said, at last, the sensor response time is another factor in some applications. The typical characteristics of the weighing sensor is similar to the hard spring vibration, so as to realize the weight of the accurate readings. Weighing sensor must solve the problem is within the requirements of the weighing cycle, in a relatively short period of time to stop oscillating. When above the load applied to the sensor, weighing sensor inhibit natural oscillation frequency. Weighing sensors, however, does not exclude external vibration, such as weighing device, therefore it is necessary to weighing sensor from the vibration source.
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