As the rated load increases, the microvolt/index signal output by the weighing sensor decreases, rather than increasing with the rated load. This is often overlooked. So when replacing sensors, it is advisable to use sensors with the same load as before as much as possible. If you want to replace a slightly larger load, it is necessary to pay attention to whether the weighing instrument range of the electronic scale is adjustable: if it is an old display instrument that is not adjustable, the output microvolt/index signal will become smaller due to replacing it with a sensor with a larger load, and it cannot be fully output and displayed, and the dial adjustment cannot achieve the purpose and cannot be used; If it is a weighing sensor with adjustable range, after replacing it with a sensor with a larger load, it can be adjusted and used according to the instructions by setting the range. At the same time, it should be noted that if the rated load of the sensor is too large and the output microvolt/index signal is too small, it is easy to reduce the sensitivity of the scale.
For electromechanical combined scales with S-shaped sensors installed in the second transmission link, it should be noted that the length of the link after reinstalling the sensor is the same as the original link length. On the other hand, it is necessary to ensure that the first transmission lever is horizontal and the connecting rod is perpendicular to the first transmission lever at a 90 degree angle. If there is a deviation, it will directly affect the accuracy and sensitivity of the scale. If the length of the connecting rod is too long, there will be a phenomenon of "large scale"; If it is too short, there will be a phenomenon of "small scale". At this point, it should also be noted that the connecting rod must be in a free hanging state and cannot rub against other objects to avoid affecting the sensitivity of the scale.
In the debugging of the electromechanical combined scale after replacing the sensor, it should be carried out according to the weighing display instrument manual on the basis of accurate debugging of the mechanical scale.
Whether it is an electronic scale or an electromechanical combination scale, after replacing the sensor, it must be verified and qualified before use.
The above scheme is not only effective for general weighing sensors, but also for S-shaped sensors. The situation where the weighing sensor needs to be replaced is often encountered during use. As long as the above operation is followed, even if the sensor is replaced, it will not affect the measurement.
May 09, 2023
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