A load cell is actually a device that converts a mass signal into a measurable electrical output. The first thing to consider is the actual working environment of the weighing sensor, which is crucial to the correct selection of the weighing sensor, which is related to whether the sensor can work normally and its safety and service life, and even the reliability and safety of the whole weighing device.
Why the installation environment of the load cell occupies a large factor can be considered from the following aspects:
The first problem is that the high temperature environment causes melting of coating materials, welding joints and structural changes of internal stress of elastomer. For weighing sensors working in high temperature environments, high temperature sensors are often used, and in special cases, heat insulation, water cooling or air cooling devices must be added.
The second is the impact of dust and moisture on the sensor caused by short circuit. In this environmental condition, a load cell with high tightness should be selected. The sealing methods of different load cells are different, and their tightness is very different. Common seals are filled or coated with sealant; Rubber pad mechanically tight seal; Welding argon arc welding, ion beam welding and vacuum nitrogen seal. From the sealing effect, the welding sealing is the best, and the filling coating sealant is the difference. For sensors that work in a clean and dry environment indoors, you can choose a glue sealed sensor, and for some sensors that work in a humid and dusty environment, you should choose a diaphragm hot sleeve seal or diaphragm welding seal, vacuum and nitrogen filled sensor.
The weighing sensor working in the above two environments needs to have strict requirements, of course, there are some environments that are also easy to access, corrosive environment and electromagnetic field strong and flammable factors are necessary considerations for the selection of weighing sensors. Secondly, the selection of the number and range of weighing sensors. The quantity consideration is the source installation method and the force point is very relevant.
