3151差壓型液位變送器的工作原理.在立足西北,恩澤西北地區(qū)工業(yè)自動化進程,在在西安液位變送器廠家生產的過程中,時長會提到差壓變送器的使用,差壓液位變偶送器是在石油化工,市政控制中都有非常重要的使用.
The working principle of 3151 differential pressure liquid level transmitter. Based on the process of industrial automation in Northwest and northwest of Enze, in the production process of Xi'an liquid level transmitter manufacturer, the use of differential pressure transmitter will be mentioned for a long time. The differential pressure liquid level transformer coupling transmitter is very important in petrochemical industry and municipal control

3151差壓型液位變送器的工作原理/3151液位變送器在西北地區(qū),復雜工況應用中非常常見的一種液位變送器常見,在常見的液位變送器使用中都使用,在西安儀表制造廠家使用的過程中,由于差壓型液位變送器能夠利用金屬電容式液位變送器的工作中,西安華恒儀表制造廠家的獨立自主的金屬電容式傳感器,通過壓力作用膜片作用到導壓結算的金屬表面產生的作用力.通過有效的膜片形變而產生微電壓,形成差壓信號,形成電壓信號.
Working principle of 3151 differential pressure liquid level transmitter / 3151 liquid level transmitter is very common in the application of complex working conditions in Northwest China. It is used in common liquid level transmitters. In the process of using by Xi'an instrument manufacturer, because differential pressure liquid level transmitter can use metal capacitance liquid level transmitter, The independent metal capacitance sensor of Xi'an Huaheng instrument manufacturer acts on the metal surface of the conduction settlement through the pressure diaphragm. Through the effective deformation of the diaphragm, micro voltage is generated, differential pressure signal is formed, and voltage signal is formed
差壓液位變送器指標測量原理
Measurement principle of differential pressure liquid level transmitter
水位變送器顯示負值是水位測量上經常出現的問題之一，根據經驗來看水位變送器顯示負值可能有兩種情況，一是變送器本身出現問題，即是產品質量或者安裝過程出現問題，二是工藝設計本身需要變送器顯示負值，最后一種情況是水位變送器經過負遷移。這兩種情況都會導致變送器以負值的形式顯示。
The negative value of water level transmitter is one of the common problems in water level measurement. According to experience, there may be two situations when the water level transmitter displays negative value. One is that the transmitter itself has problems, that is, the product quality or installation process has problems. The other is that the process design itself needs the transmitter to display negative value. The last situation is that the water level transmitter has undergone negative migration. Both conditions cause the transmitter to display as a negative value.
壓式液位計測量原理圖。當差壓計一端接液相，另一端接氣相時，根據流體靜力學原理，有：
Measurement schematic diagram of pressure type liquid level gauge. When one end of the differential pressure gauge is connected with the liquid phase and the other end is connected with the gas phase, according to the principle of hydrostatics, there are:
PB=PA+Hρg （2-1）
PB=PA+Hρg （2-1）
式中： H——液體高度；
Where: H - liquid height;
ρ——被測介質密度；
ρ - density of measured medium;
g——被測當地的重力加速度。
G - the acceleration of gravity in the area to be measured.
由式（2-1）可得：
From equation (2-1), we can get:
ΔP= PB－PA= Hρg
ΔP= PB－PA= Hρg
一般來說，測量介質的密度和重力的加速度是已知的，因此由差壓表測量的壓差與液體H的高度成比例，使得測量的高度液體成為測量差壓的問題。我們公司目前擁有三大技術實力，一是全隔離的智能電路處理單元技術，二是金屬電容傳感器的制造技術，三是全系列節(jié)流裝置的多參量技術。
Generally speaking, the density of measuring medium and acceleration of gravity are known, so the pressure difference measured by differential pressure gauge is proportional to the height of liquid h, which makes the measured height liquid become the problem of measuring differential pressure. At present, our company has three technical strength, one is the fully isolated intelligent circuit processing unit technology, the other is the manufacturing technology of metal capacitance sensor, and the third is the multi parameter technology of the whole series of throttling devices.

3151差壓型液位變送器的工作原理/ 如變送器的量程為0-25kPa,變送器負遷移至-30kP～-5kPa，起調校步驟如下1、將變送器調校在量程0-25kPa2、在變送器低壓側加30kPa的壓力，再調整變送器的零位直到輸出為4mA。注意不能調整變送器量程 
The working principle of 3151 differential pressure type liquid level transmitter / for example, the range of the transmitter is 0-25kpa, the transmitter moves to - 30kp ~ - 5kpa in negative direction, and the adjustment steps are as follows: 1. Adjust the transmitter to the range of 0-25kpa2, add 30KPa pressure to the low pressure side of the transmitter, and then adjust the zero position of the transmitter until the output is 4mA. Note that the transmitter range cannot be adjusted
3151差壓型液位變送器的工作原理/ 華恒變送器廠家憑借自身擁有的傳感器和智能電路板核心技術，可以根據客戶要求，低成本對核心技術進行延伸變形，實現個性化產品定制。主要產品有SMART（斯瑪特）系列壓力變送器、多參數變送器、流量器、溫度傳感器和物位（液位變送器廠家，為我國電力、石油、化工、冶金、水泥、礦業(yè)等行業(yè)提供了高性能價格比的工業(yè)自動變送器廠家產品.
Working principle of 3151 differential pressure liquid level transmitter / relying on the core technology of sensor and intelligent circuit board owned by Huaheng transmitter manufacturer, the core technology can be extended and deformed at low cost according to customer requirements to achieve personalized product customization. The main products are smart (SMART) series pressure transmitter, multi parameter transmitter, flowmeter, temperature sensor and level (liquid level transmitter manufacturer, which provides high performance price ratio industrial automatic transmitter manufacturer products for China's power, petroleum, chemical, metallurgical, cement, mining and other industries