How to determine the weighing sensor quality

For the choice of weighing sensor, we pay more attention to the application environment and the actual needs. Of measured object, for example, test environment conditions and volume requirements. In addition, the type of signal output, cable transmission and measuring distance also have requirements. In addition, there are signals of output, whether cable transmission, measure the distance of the requirements, then listen to the weighing sensor manufacturer engineers on how to determine weighing sensor quality! Detection of weighing sensor operating method is as follows: the goods are of good quality, weighing sensor manufacturers of the output sensitivity and the power supply voltage. We according to these two parameters to detect the sensor output signal. The output analog signals for millivolt strain sensors. For example, the output of the sensor sensitivity to 2. 0 mv/v, the power supply voltage of dc10v, two parameters can provide dc10v excitation voltage sensor need, the linear relationship between the sensor output signal corresponding to the output of 2. 1 0 mv/v voltage. For example, if the sensor of the full range of 50 kg, gives full range sensor dc10v voltage output 20 mv. Sensor light output is 0 millivolt normal, greater than this value, but close to the values, the value changes for the sensor drift. Second, the reference to the weighing sensor manufacturer mark sensor parameters configuration, input resistance and output resistance strain gauge sensor is normal. Sensor input and output resistance varied from manufacturers. So should be test according to the manufacturer's mark. If the resistance value is greater than the factory values show that overload weighing sensor, strain gauge is out of shape. If the resistance to infinity, the sensor's strain gauge severely damaged, can't repair. Third, due to the lead of the weighing sensor in use process often disconnected, and sheathed wire outer intact, so through visual inspection sensor line is in good condition. We use a multimeter ohms range to detect sensor wire on and off. If the resistance is infinite, is bound to disconnect in time, if the resistance to change, is the poor contact.

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