Weighing transmitter is widely used in electronic scales, kitchen scales, jewelry scales and other industrial fields. It is an indispensable core component in industrial and agricultural automation systems. It is shaped like a square body. It is collectively referred to as parallel in industry. Beam load cell. The product structure is made of aluminum alloy, colorless anodized, and sealed. It is mainly suitable for electronic price scales, weighing scales and other electronic scales with small countertops.

(1) The measurement range of the weighing transmitter, the required accuracy and measurement function;

(2) The environment faced by the weighing transmitter, such as the petrochemical industrial environment, the existence of flammable (toxic) and explosive dangerous atmosphere, and the high ambient temperature.

(3)weighing transmitterThe physical and chemical properties and states of the measured medium, such as strong acid, strong alkali, viscous, easy to solidify, crystallization, gasification and other working conditions;

(4) Changes in the operating conditions of the weighing transmitter, such as changes in medium temperature, pressure and concentration. Sometimes, from start-up to normal production of parameters, changes in gas and liquid concentration and density should also be considered.

(5) The structure, shape, size, equipment accessories and various inlet and outlet nozzles of the container to be tested should be considered, such as towers, solution tanks, reactors, boiler drums, vertical tanks, spherical tanks, etc.

(6) Other requirements for environmental protection, sanitation, etc.;

(7) The selection of engineering instruments should be considered uniformly. It is required to reduce varieties and specifications and spare parts as much as possible to facilitate management.

(8) Specific requirements of craft brick suppliers.

(9) Actual process conditions:

(1) Consider what kind of equipment the test object belongs to. Such as tanks and tanks, the tank volume is small, the measurement range is not too large, the tank volume is large, the measurement range may be large;

(2) According to the physical and chemical properties and cleanliness of the medium, conventional differential pressure transmitters and float level transmitters are preferred, and the material of the part in contact with the medium is selected.

(3) For some suspended solids, foam and other media, a single-flange differential pressure transmitter can be used. The plug-in double-flange differential pressure transmitter is easy to precipitate and crystallize;

(4) For the liquid level of high-viscosity medium and the liquid level of high-pressure equipment, since the equipment cannot be drilled, a radioactive liquid level gauge can be selected for measurement;

(5) In addition to measurement methods and technical issues, there are also instrument investment issues. To sum up, the selection of transmitters should be technically feasible, economical and reasonable, and easy to manage.

The weighing transmitter is based on the principle that the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge (conversion element) pasted on the other surface is also deformed. The resistance strain gauge deforms After that, its resistance value will change (increase or decrease), and then the resistance change is converted into an electrical signal (voltage or current) through the corresponding measuring circuit, thus completing the process of converting the external force into an electrical signal.

The weighing transmitter has the advantages of high accuracy, wide measurement range, long service life, simple structure, good frequency response characteristics, can work under harsh conditions, and is easy to achieve miniaturization, integration and diversification. Its disadvantage is that it has large nonlinearity. , the output signal of large strain is weak, but certain compensation measures can be taken. Therefore, it is widely used in automatic measurement and control technology.