★适用场合需要将高温介质与变送器隔离●对变送器敏感元件有魔蚀性作用。悬浮液体或高粘度介质密封压力容器液位测量更换被测介质需要严格净化测量头●测量头必须保持清洁卫生。被测介质由于环境或流程温度变化而固化或    目前水产养殖中一般是将没有处理的废水直接排放到河流里，造成严重的污染环境，有的设置有废水处理装置，废水处理装置上安装有管道，在管道内安装有过滤片可对废水中较大的颗粒物进行过滤,例如对虾粪进行过滤，但是在长期使用过程中，固体杂质会将过滤片的孔慢慢堵塞，造成废水无法流淌现象，只能靠人工进行拆除清洗，费时费力，不便于操作。
The high temperature medium should be isolated from the transmitter in the application occasion ● it has the magical effect on the sensitive elements of the transmitter. Liquid level measurement of sealed pressure vessel with suspended liquid or high viscosity medium. The measuring head must be cleaned strictly when changing the measured medium ● the measuring head must be kept clean. The measured medium is solidified due to the change of environment or process temperature. At present, the untreated wastewater is directly discharged into the river in aquaculture, resulting in serious environmental pollution. Some of them are equipped with wastewater treatment devices, and pipes are installed on the wastewater treatment devices, and filters are installed in the pipes to filter the larger particles in the wastewater, For example, shrimp feces are filtered, but in the long-term use process, solid impurities will slowly block the hole of the filter, resulting in waste water can not flow phenomenon, can only rely on manual removal and cleaning, time-consuming and laborious, not easy to operate.
【数显投入式液位变送器】养虾废水处理装置及使用方法
[digital display input liquid level transmitter] shrimp wastewater treatment device and its use method
1、导压管尽可能短;
1. The impulse pipe should be as short as possible;
2、测量液体或蒸汽时，导压管向上连接到过程管道，其倾斜度应不小于1/12;
2. When measuring liquid or steam, the pressure pipe shall be connected upward to the process pipeline, and its gradient shall not be less than 1 / 12;
3、对于气体测量，导压管向下连接到过程s管道，坡度应不小于1/12;
3. For gas measurement, the pressure pipe should be connected downward to the process s pipe, and the slope should not be less than 1 / 12;
4、液压导管的布置应避免在中间发生高点，并布置气体导压管应避免在中间出现低点;
4. The high point in the middle should be avoided in the arrangement of hydraulic pipe, and the low point in the middle should be avoided in the arrangement of gas pressure pipe;
5、两个导压管之间应保持相同的温度;
5. The same temperature should be maintained between the two pressure pipes;
6、为了避免摩擦的影响，导压管的直径应足够大;
6. In order to avoid the influence of friction, the diameter of impulse pipe should be large enough;
7、压力充气应该没有气体充满液体的管子;
7. There should be no gas filled liquid tube for pressure inflation;
8、使用隔离液时，两侧导压管的液体应相同;
8. When using the isolating fluid, the liquid in the pressure pipe on both sides should be the same;
【数显投入式液位变送器】养虾废水处理装置及使用方法
[digital display input liquid level transmitter] shrimp wastewater treatment device and its use method
的稳定性、精度、可靠性非常重要，具有工作可靠、性能稳定、安装使用方便、体积小、重量轻、性能价格比高等点。广泛应用于各种工业自控环境，涉及水利水电、铁路交通、智能建筑、生产自控、航空航天、军工、石化、油井、电力、船舶、机床、管道等众多行业，适用于测量液体、气体或蒸汽的液位、密度和压力，然后将压力信号转变成4～20mADC信号输出。
The stability, precision and reliability are very important, with reliable work, stable performance, convenient installation and use, small volume, light weight, high performance price ratio. It is widely used in a variety of industrial automatic control environment, involving water conservancy and hydropower, railway transportation, intelligent building, production automation, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools, pipelines and many other industries. It is suitable for measuring the liquid level, density and pressure of liquid, gas or steam, and then converting the pressure signal into 4 ~ 20mADC signal output.
一种过滤装置，包括相互连接的进水管与出水管，所述出水管靠近进水管的端部散装有过滤片，所述进水管与出水管之间安装有连接筒，所述连接筒竖直设置有滑筒，所述滑筒内安装有可沿滑筒移动的刮板，所述刮板与过滤片位置相对应。
A filtering device includes an inlet pipe and a water outlet pipe which are connected with each other. The end of the water outlet pipe is close to the water inlet pipe in bulk. A connecting cylinder is installed between the water inlet pipe and the water outlet pipe. The connecting cylinder is vertically provided with a sliding cylinder, and the scraper which can move along the sliding cylinder is installed in the sliding cylinder, and the position of the scraper is corresponding to the position of the filter sheet.
当过滤片在长期使用过程中，过滤孔会粘附杂物会逐渐将过滤孔堵塞，通过上述设置，通过刮板沿滑筒移动可将过滤片上的附着物清除掉，保证过滤片的正常使用。
When the filter is used for a long time, impurities will adhere to the filter hole, which will gradually block the filter hole. Through the above settings, the attachment on the filter can be removed by moving the scraper along the sliding cylinder, so as to ensure the normal use of the filter.