How does the pressure transmitter measure the liquid level
From: Issued date 2021.03.25 Back
When the pressure transmitter works, it must be in direct contact with the measured medium, operating in high temperature, low temperature, corrosion, vibration, shock and other environments. At the engineering site, whether the transmitter can run normally and reliably depends not only on the product quality, but also on the three aspects of optimized engineering design, reasonable model configuration and correct field maintenance.
Pressure transmitter products are widely used in steel, chemical, papermaking, waste water treatment, tap water, heat, power, food, non-ferrous and other industries. In addition to measuring pressure, pressure transmitters can also be widely used, such as using a differential pressure transmitter to measure flow and using liquid pressure to measure liquid level.
In a static liquid: The static pressure at a point in the liquid is directly proportional to the distance from that point to the liquid surface, that is: P = ρgh. Among them: P-pressure (intensity of pressure) of the measured point, ρ-medium density, g-gravitational acceleration, h-height from the measured point to the liquid surface.
Taking the PCM260 level transmitter as an example, the method of installation and use in static water is as follows
Deep wells pools liquid tanks
Installation tips:
1) When measuring the level of stationary fluid in an open container, place the level transmitter vertically into the bottom of the container and secure the cable connecting the transmitter to the junction box at the opening of the container.
2) When the medium viscosity is relatively large (such as sewage pool), casing or bracket can be installed to ensure that the transmitter can be put into the bottom of the container.
3) When doing an open-air installation, the terminal box of the transmitter should be placed in a ventilated and dry place to avoid direct exposure to light and rain, which may cause the shell temperature to be too high or water to get inside and damage the internal circuit board.
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