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How to deal with the \"hysteresis\" of tuning fork level switches?

2017-12-28View Original

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Delay is an important static parameter of sensors, and it has a significant impact on the testing accuracy of sensors. Similarly, the tuning fork level switch also exhibits hysteresis, and if not handled properly, it can significantly affect its measurement accuracy. So, how does Jiwei address the impact of the \"hysteresis\" of the tuning fork level switch on level measurement? Before the introduction, let’s first understand what \"hysteresis\" is, and what hysteresis means in the context of fork-type level switches. What is hysteresis? Hysteresis refers to the phenomenon in the calibration process of sensors, where when the same magnitude of input is applied but in different directions of movement, the output signal magnitude differs even though the input value remains constant. The phenomenon of the input-output characteristic curves not overlapping during the forward and reverse travel of such sensors is known as hysteresis. As shown in the figure below: the horizontal axis X represents the load, while the vertical axis Y represents the sensitivity output. The hysteresis of the fork-type level switch: For a fork-type level switch, due to its functional characteristics, hysteresis refers to the distance between X1 and X2. Here, X1 is the position reached by the medium being measured when it rises to the point at which the switch operates, while X2 is the position reached when the medium drops to that same operating point; this distance is what constitutes the hysteresis of the fork-type level switch. Jikei addresses the \"lag\" issue associated with fork-type level switches. Given that this lag has a significant impact on level measurement, Shenzhen Jikei Automation Technology Co., Ltd. takes this factor into full consideration when manufacturing such switches. It uses different calculation algorithms depending on the density of the medium in question, and then verifies these algorithms through experimental results. As a result, the fork-type level switches produced by Jikei offer more accurate and reliable level measurement compared to other similar products. (Article excerpt from: www.jiweimeter.com/yfshow-23-367-1.html; please indicate the source when reproducing it.) )
Reply #22017-12-28
Regarding switches, they either have a high-alarm characteristic or a low-alarm characteristic. People always talk about the actuation hysteresis and alarm hysteresis of switches; sometimes they also discuss the magnitude of the repeatability error in switch actuation. . . The switch has some damn latency. Your kid is full of nonsense and doesn’t make any sense. . If you’re not satisfied, go call your boss here; I want to scold him {:3_51:}

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