There are many environments in which the level transmitter is used, and when choosing a level transmitter, the first thing to consider is whether the medium to be measured is a closed container environment. For non-confined environments, we use hydrostatic level transmitters. Tightness requires the use of a 3051 differential pressure transmitter for level measurement. This is because the principle of the measurement method is different between the level measurement in a closed and non-closed environment. The working mode of the hydrostatic level transmitter is: the liquid level transmitter is put into the non-sealed liquid, the pressure of the measured liquid medium will be introduced into the positive pressure cavity of the transmitter, and the atmospheric pressure Po on the page is connected with the negative pressure cavity of the transmitter through the cable air guide pipe to offset the Po on the front of the transmitter, so that the pressure measured by the transmitter is ρgh. In this way, by measuring the pressure P, the depth of the liquid level can be determined. The formula measured by the level transmitter is: P=ρgh+Po. P : The pressure on the liquid surface of the level gauge (for ease of understanding, collectively referred to as pressure) ρ : the density of the liquid to be measured g : acceleration due to gravity Po: atmospheric pressure on the liquid surface h : The depth at which the sensor is put into the liquid The 3051 differential pressure transmitter measures the height of liquids in closed containers. This is because when measuring the liquid level during the same period of sealing, it is affected by the static pressure in the container. The 3051 differential pressure transmitter eliminates the influence of static pressure in the vessel, so that the level height of the detection point is independent of the pressure in the equipment. The working method of measuring the liquid level of the 3051 differential pressure transmitter is to install pressure pipes on the upper and lower parts of the closed equipment to detect its differential pressure. To know the density of the liquid in the container, according to the pressure formula P = ρgH, the pressure of the upper and lower parts of the equipment can be known. The level height in the container is H = ΔPρg. The detection of the liquid level boils down to the detection of the differential pressure. ΔP: is the pressure difference between the upper and lower parts of the equipment ρ: is the density of the liquid in the device g: is the acceleration due to gravity h: is the liquid level in the equipment No matter where we want to measure the liquid level, we must know what the medium of the liquid level to be measured is, what is the approximate range of the measuring range, and what is the temperature and density of the medium. Therefore, when we choose a transmitter to measure the liquid level, we must first analyze whether the environment we measure is closed, which is the first step, and then the selection of other factors. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!