How does a pressure transmitter measure liquid level?
When a pressure transmitter works, it needs to be in direct contact with the measured medium and often operates in environments such as high temperature, low temperature, corrosion, vibration, and impact. Whether it can operate normally and reliably on the engineering site depends not only on product quality, but also on optimized engineering design, reasonable model configuration, and correct on-site maintenance.
Pressure transmitter products are widely used in industries such as steel, chemical, papermaking, sewage treatment, tap water, heat, electricity, food, and non-ferrous metals. In addition to measuring pressure, pressure transmitters can also have many applications, such as using differential pressure transmitters 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 proportional to the distance from that point to the liquid surface, that is, P=ρ gh. Among them: P-pressure at the measured point, ρ - medium density, g-gravitational acceleration, h-height from the measured point to the liquid surface.
Taking RJ260 cable type liquid level transmitter as an example, the static installation and usage method in water is as follows:
Installation Tip:
1. When measuring the static fluid level in an open container, place the level transmitter vertically at the bottom of the container, and fix the cable and junction box connecting the transmitter at the opening of the container.
2. When the viscosity of the medium is high (such as in a sewage tank), a sleeve or bracket can be installed to ensure that the transmitter can be placed at the bottom of the container.
3. When installing outdoors, the transmitter junction box should be placed in a well ventilated and dry place as much as possible to avoid direct exposure to strong light and rain, which can cause high housing temperature or water ingress, thereby damaging the internal circuit board.
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