Relationship between sensitivity of weighing sensor and measuring range of weighing instrument

For example, the sensitivity of the load cell mentioned above is considered as S = 2mV/V. What if the sensitivity is considered as S = 1mv/v? Let's compare the scales that use a single load cell:

When the sensitivity of the weighing sensor S = 1mv/v, the encouraging voltage V = 12V, the maximum weighing EMax = 150kg, the weighing instrument zui's large weighing max = 150kg, and the zui's large net output signal is:

Encouragement voltage × sensitivity × emmaxx = 12v× 1mv/v× 115500kggg = 12mv When the sensitivity of the load cell is 2mv/v, the encouragement voltage is 12v, and the weighing machine zui has a large scale Emax = 300kg. The maximum net output signal is: encouraging voltage× sensitivity× memaxax = 12v× 2mv/v× 310500kkgg = 12mv. If the zui small static load Emin of this weighing sensor with sensitivity of 1mv/v is 6kg, when the accuracy level is C3, that is, nLC = 3000, There is a calibration index value v = emaxn-lcemin = 1503k0g0-0.6kg = 0.048kg, while the calibration index value e = 0. 05kg of the platform scale mentioned above. In this way, under the premise of S = 1mv/V, the calibration index value of the weighing sensor and the scale index value are basically close. Therefore, we can see that when the ratio of the change of the response (output) of the load cell to the change of the corresponding encouragement (applied load) is not greater than S = 1mv/v, the nLC&ne rule can be established. Weighing machines with single weighing sensor, for example, many electronic weighing machines use a single weighing sensor as a force-electricity conversion element, which can be roughly divided into two categories: one is that the Maximum weighing capacity (Emax) of the weighing sensor is much larger than the maximum weighing capacity (max) of the weighing machine; One is that the Maximum weight (Emax) of the load cell is close to the maximum weight (max) of the scale. The sensitivities of the two types of load cells mentioned here are all compared under the same size.