How to choose the right external level gauge

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The advantage of external level gauges over ordinary level gauges is that they require no drilling or use of fire during installation, making them simple and easy to install. The external level gauge utilizes advanced signal processing technology and high-speed signal processing chips, overcoming the influence of the container wall thickness to enable true non-contact measurement of the liquid level inside sealed containers. It requires no drilling in the container to be measured, is easy to install, and does not interfere with production. But how to choose an external level gauge correctly? Xi’an Dinghua Electronics Co., Ltd. (hereinafter referred to as Dinghua Electronics) has several requirements for selecting external level gauges! First, it is necessary to identify the medium being measured; the medium for external level gauges should not be too viscous, with a viscosity of less than 30 MPa·s. However, external level switches require a low viscosity; if it is not necessary to measure a continuous value, an ultrasonic level switch can be chosen. Secondly, it is necessary to determine what type of container the medium being tested is in – whether it is a spherical tank, a horizontal tank, or a vertical tank ； The installation method for each type of tank varies; it is necessary to determine whether an external level gauge can be installed and how to do so. Next, it is necessary to understand the range of the container to see if it is suitable. (Presently, the measurement ranges for Dinghua electronic instruments are 0.1~3m, 0.2~6m, 0.5~10m, 1~16m, 1~21m, and 1~30m.) It is also necessary to determine the wall thickness of the tank, whether there are materials used for insulation or cooling, and if the tank walls are made of multiple layers of material. The layers should be in tight contact, with no bubbles or gas. Liquid central layer. The inner surface of the container wall at that location should be smooth. Such as: vulcanized rubber backing layer, stainless steel backing layer, titanium backing layer. It is also necessary to know the medium temperature; the current measurable temperature range is -60~220°C, while higher or lower temperatures require customization. Other parameters: explosion protection rating, accuracy, output, power supply method, etc., can be specified according to on-site requirements. After understanding these, one can choose a suitable external level gauge.