Automatic equipment will inevitably encounter some problems in use, and the same is true for checkweighers that detect weight. On any weighing equipment, there are two errors that will have a significant impact on the accuracy of the equipment. One is repeatability, and the other is Accuracy, that is, the correctness of the weighing result compared with a known weight (such as a weight). These 2 parameters are also the only comparable between dynamic checkweighing (online automatic checkweighing) and static weighing (static scale). 2 parameters of the Just test the products that need to be checked in the environment of use. Today, I want to tell you about the problem of the unstable weight of the automatic checkweigher. I hope you can understand and handle it correctly to ensure the normal operation of the checkweigher. use.

The weight of the checkweigher instrument is unstable, and the beating is 0.10.2g, which is a normal phenomenon, because the working principle of the checkweigher instrument is that when the product passes through the weight detection table, the weight sensor transmits the sensed weight to the AD converter as an analog signal , and then sent to the system by the AD converter, and the system sends it to the display for display. The automatic checkweigher uses high-precision weight sensors, and the weight sensors are very sensitive to everything in the outside world, including wind, Air flow is very sensitive, so jumping between 0.2 is a normal phenomenon. If the weight of the checkweigher display jumps up and down to 1g or even higher, it is abnormal and needs to be stopped for inspection. Generally, the items to be checked are as follows:

1. Check whether there is dust on the sensor;

2. Check if there is any object against the tray;

3. After checking according to the above 2 steps, press the "Weight reset" button to re-calibrate.

yesCheckweigher MeterThe biggest misunderstanding of testing is to test a checkweigher by calibrating a static scale. Stop the conveyor belt, place an object on the weighing belt, read the weight, and see if the weight you know matches. is completely wrong. When the conveyor belt is on, the checkweigher vibrates more and operates in motion, which introduces more errors and cannot be directly compared with the test results in the static state. This is also a dynamic checkweigher The reason why the sensor needs to be specially designed to meet specific accuracy requirements. In fact, the value obtained by placing the object under static conditions is only used by the service engineer as a starting reference point for determining the dynamic weight. For example, a checkweigher in When stationary, the weight of an item is 500g, and when the checkweigher moves, the same object is weighed, and the obtained weight becomes 502g. At this time, the checkweigher needs to be calibrated, minus 2g .Generally speaking, the current checkweighers can automatically adjust this value by placing a static reference object, then comparing and automatically adjusting this value.