Which environments will affect the checkweigher load cell
The checkweigher machine sensor also has requirements for the environment. If it is used in an unsuitable environment, there will be some problems. According to the following environments, we should pay attention to avoid using the checkweigher machine in these environments. equipment. 1. The influence of electromagnetic field on the sensor output disorder signal In this case, the shielding of the sensor should be strictly checked to see if it has good anti-electromagnetic ability. 2. In a highly corrosive environment, such as humidity and acidity, which will damage the elastomer or cause a short circuit, the outer surface should be over-sprayed or a stainless steel cover should be selected. The sensor has good corrosion resistance and good airtightness. 3. The effect of dust and humidity on the short circuit of the sensor In this environment, the sensor with high airtightness should be selected. Different sensors have different sealing methods, and their airtightness is very different. Common seals include sealant filling or coating; rubber pads are mechanically fastened and sealed; welding (argon arc welding, plasma beam welding) and vacuum nitrogen filling seals. From the perspective of sealing effect, welding sealing is suitable, and filling and coating sealant is poor. For sensors that work in a clean and dry indoor environment, you can choose a glue-sealed sensor, and for some sensors that work in a humid and dusty environment, you should choose a diaphragm heat seal or diaphragm welding seal, pumping Vacuum nitrogen filled sensor. 4. Flammable and explosive Flammable and explosive not only cause complete damage to the sensor, but also pose a great threat to other equipment and personal safety. Therefore, sensors working in flammable and explosive environments put forward higher requirements for explosion-proof performance: explosion-proof sensors must be selected in flammable and explosive environments. The sealing cover of this sensor must not only consider its airtightness, but also The explosion-proof strength, as well as the waterproof, moisture-proof and explosion-proof properties of the cable leads should be considered. Secondly, the selection of the number and range of sensors. 5. High temperature environment The high temperature environment causes the sensor to melt the coating material, open the solder joint, and cause structural changes in the internal stress of the elastomer. For sensors working in high temperature environments, high temperature sensors are often used; in addition, heat insulation, water cooling or air cooling devices must be added.
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