|信息来源： 液位变送器 | 2020-06-02 点击量： 7466|
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
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
Measurement principle of differential pressure liquid level transmitter
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.
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:
Where: H - liquid height;
ρ - density of measured medium;
G - the acceleration of gravity in the area to be measured.
From equation (2-1), we can get:
ΔP= PB－PA= Hρg
ΔP= PB－PA= Hρg
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.
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
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