Points to consider when selecting double-flange level transmitters

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This post was last edited by yangallen on 2018-4-16 at 14:53. A double-flange level transmitter is a pressure sensor component used to prevent the medium in the pipeline from entering the transmitter directly; it is connected to the transmitter through a capillary filled with fluid. It is used to measure the level, flow rate, and pressure of liquids, gases, or vapors, and then converts these values into a 4–20mA DC signal for output. A double-flange level transmitter is also known as a dual-flange transmitter or double-flange level gauge; as the name suggests, it has two flanges, which is something that distinguishes it from single-flange level transmitters. Flange-type level transmitters often require special processing in specific environments during production; they need to have a narrow measurement range and high precision, as well as be capable of withstanding high temperatures, corrosion, and high overload levels. Therefore, when selecting a flanged level transmitter, it is essential to clarify its range of application. When selecting a flanged level transmitter, the following factors should be taken into consideration: 1. The substance being measured, such as its physical and chemical properties, as well as the operating pressure and temperature, installation conditions, and the rate of change in liquid level ； 2. Measurement and control requirements, such as measurement range, measurement accuracy, display method, on-site indication, remote indication, interface with computers, safety and corrosion resistance, reliability, and ease of installation. When selecting a double-flange level transmitter, it is particularly important to take into account one key factor: the differential pressure type level transmitter. This type of transmitter is installed at the bottom of a liquid container, and it uses gauge pressure signals to indicate the level of the liquid. In the control processes for level measurement in the pharmaceutical and chemical industries, containers holding liquids are often under pressure; under such conditions, conventional static pressure level transmitters can no longer meet the measurement requirements. Thanks to improvements in the sensor circuitry and design, differential pressure level measurement technology has gained greater practical value in the pharmaceutical and food industries.