Selection of the accuracy level of the weighing machine
The accuracy level of the weighing machine should also be selected when using a weighing machine. The accuracy level of the weighing machine includes the non-linearity, stress relaxation, stress relaxation repair, backwardness, repeatability, sensitivity and other performance indicators of the weighing machine. In the case of using a weighing machine, it is not necessary to simply pursue a perfect and advanced weighing machine, and not only consider the accuracy requirements of the electronic scale, but also consider its cost. The selection of the weighing machine level must consider the following two criteria: 1. Consider the provisions of the dashboard. The weighing display instrument has the output data signal of the weighing machine to display the information of the weighing result after the solution has been enlarged, A/D conversion and so on. Therefore, the output data signal of the weighing machine must be greater than or equal to the size of the input signal specified by the instrument panel. The output sensitivity of the weighing machine will be substituted for the matching formula of the weighing machine and the instrument panel, and the calculation result must be greater than or equal to the instrument panel regulations. The typing sensitivity. The matching formula of the weighing machine and the instrument panel: the output sensitivity of the weighing machine * the encouragement of the power supply voltage * the number of sub-myopia of the larger weighing scale of the scale * the number of the weighing machine * the measuring range of the weighing machine For example: one weighing is 25kg quantitative packaging machine, the larger myopia degree is 1000 measuring ranges; the scale body uses 3 LBE25 weighing machines, the measuring range is 25kg, the sensitivity is 2.0±0.008mV/V, and the electric working pressure of the stone arch bridge is 12V; Choose AD4325 dashboard. Ask whether the selected weighing machine can be matched with the instrument panel. Solution: After checking, the input sensitivity of the AD4325 instrument panel is 0.6μV/d, so according to the matching formula of the weighing machine and the instrument panel, the specific input data signal of the instrument panel must be: 2×12×25/1000×3×25 ＝8μV/d＞0.6μv/d Therefore, the selected weighing machine takes into account the regulations of instrument panel input sensitivity, and can be matched with the selected instrument panel. 2. Consider the accuracy of an electronic scale. An electronic scale is mainly composed of three parts: scale body, weighing machine, and instrument panel. In the case of selecting the accuracy of the weighing machine, the accuracy of the weighing machine should be slightly higher than the calculated value of the basic theory, due to the basic theory It is usually limited by objective reasons. For example, the compressive strength of the scale body is a little bit poor, the characteristics of the instrument panel are not very good, and the office environment of the scale is more extreme, etc. All factors immediately endanger the accuracy requirements of the scale, so it must be improved from all levels. The regulations must also take into account the economic benefits to ensure that the goal is achieved.
The manufacture marketing game of weigher is changing with each innovation, and businesses of all products need to be ready to pounce.
What are you waiting for? Don't you want to provide perfect support to linear weigher? If yes, so, switch to weigher right away!
For more weigher multihead weigher packing machine reviews, tips and advice on choosing a washer and dryer for you and your family, please visit Kenwei Multihead weighers,where you can also choose the you are looking for.