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Author: Smartweigh–Multihead Weighter
According to the International Proposal No. 60 of the International Organization for Legal Metrology (OIML), the multihead weigher can be divided into four accuracy levels: a, b, c, and d according to its comprehensive performance. Minimum and upper limits of each grade are required. The maximum score of a sensor with a clear accuracy level is indicated by 1000.
multihead weigher. For example, C3 shows information about a 3000-minute c-class multihead weigher. Sensors used in general trade measurement verification applications must achieve C3 level.
In other words, 3000 points. For example, a 30t multihead weigher, assuming that its metrological test score is 3000, its metrological test score is 10kg. Assuming that his measurement test score is 2500, his measurement test score is 12kg.
It is assumed that the sensor meets the requirements of the national industry standard under the metrological verification score of 3000, and the grade of the sensor is C3. If only within 2500 minutes of metrological verification to meet the requirements, the sensor is C2.5 level. If the lower one can only achieve 1000 points, the sensor is C1 level, and the measurement test score at this time is 30kg.
The right level of selection. In the whole process of selecting a multihead weigher, the accuracy level of the sensor is also a key indicator value, which jeopardizes the accuracy of the weighing scale. First and foremost, it is important to consider the key-in regulations of the load indicator.
Bring in the following formula to calculate whether the sensor and the instrument panel are consistent. multihead weigher table&Weighing indicator. The output sensitivity of the sensor * encourages the power supply voltage * the larger weighing scale, the scale's sub-degree of myopia * the number of sensors * the measuring range of the sensor.
The output data signal of the sensor should not be clear from the input data signal specified by the instrument panel. Assuming that a certain amount is 25kg quantitative packaging machine, the scale with a maximum performance of 1000 minutes selects 3 sensors, the amount is 25kg, and the sensitivity is 2.0±0.008mV/V, the scale with arc working voltage of 12V selects the multihead weigher table. Find out if the sensor and the dashboard are the same.
Read the material and find that the input data signal on the instrument panel is 2x12x25/1000x3x25=8μV/d>0.6μV/d. Therefore, they are the same.
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