The number of sensor selection is based on the purposes of electronic weighing apparatus, the scale body needs to support the points (support points should be according to the geometric center of gravity and practical principles and determine the focus of the overlap). Generally speaking the scale body has several strong point is to choose a few sensors.
Sensor range selection can be based on the scale of maximum value, choose the number of sensors, the balance of body weight, can produce the largest partial load and dynamic load factors comprehensive evaluation to decide. Range of sensors, in general, the closer the assigned to each sensor of the load, the higher the accuracy of the weighing. But in actual use, due to add on the sensor payload in addition to the known objects, there is balance of body weight, tare weight, partial load and vibration impact load, so choose sensor, want to consider many factors, to ensure the safety and service life of the transducer. Here is a more extensive experience formula of experimental verification.
Formula is as follows:
C = K0 x K1 x K2 x K3 (Wmax + W)/N
Type C a single sensor in rated range
W a scale body weight
The maximum net Wmax a known object
N a scale body adopted by the number of points
A insurance coefficient K0, generally between 1.2 ~ 1.3
A impact coefficient K1
K2 a scale body's center of gravity offset coefficient
A wind pressure coefficient K3
