|信息来源： 液位变送器使用 | 2020-07-07 点击量： 1194|
Alkali liquor is one of the main raw materials in viscose production. Our company adopts float type telemetry liquid level meter for alkali measurement. The indicator of buoy and heavy hammer is used to indicate the instrument. There are often the following problems in the use process: ① drum wheel is often blocked by the alkali liquid carried by the steel rope, resulting in inaccurate instrument indication; ② the weight of the heavy hammer is insufficient, so that the weight of the heavy hammer is delayed or even does not slide, and the pointer cannot be driven, which leads to the instrument indication
The digital liquid level detector is mainly composed of four parts: J detection circuit, stepper motor pulse distribution circuit, stepper motor drive circuit; ② counting, setting control height, and several parts circuit ＂ ① control signal amplifying and output alarm circuit ＂ ④ ① gear speed change mechanism. Figure 1 is the structure diagram of the digital liquid level detector.
1。 In the detection circuit, there are three states of the relative position between the two ends of the detection head T1 and T2 and the liquid level. ① The detection head T1 and T2 are not immersed in the liquid level; ② the detection heads T1 and T2 are immersed in the liquid level; ③ T1 is immersed in the liquid level, and T2 is on the liquid level. When contacting the liquid level, the detection head is at high level "0 ° and becomes low level" 1 "after leaving the liquid level. Seven gates are used in the detection circuit