The Five Precautions for Weighbridge Sensor Maintenance We are familiar with the weighbridge that senses the weight of a heavy object by using a sensor, that is, the quality signal is replaced with an electrical signal that can be displayed on the output device. Therefore, in daily use, it is necessary to pay attention to a sensor that maintains the loadometer.
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The sensor is a device that can sense the external physical factors, so it is easily affected by the external environment, resulting in a large measurement error, and even lead to sensor scrap. So what problems should we pay attention to in the process of use? The following sensor trading network in China to take everyone to understand the loadometer sensor maintenance considerations:
First, in the corrosive environment, such as moisture, acid damage to the sensor caused by elastomer or a short circuit, etc., should be selected outside the surface sprayed or stainless steel cover, good corrosion resistance and good sealing sensor .
Second, the high temperature environment causes problems such as the melting of coating materials, the opening of solder joints, and the structural changes in the elastic body stress. Sensors that work in high temperature environments often use high temperature sensors; in addition, they must be insulated, water-cooled, or air-cooled.
Third, dust, moisture on the sensor caused by the short circuit. In this environment, the sensor with high airtightness should be selected. Different sensors have different sealing methods, and there are great differences in their tightness. Common seals are filled or coated with sealant; mechanically sealed rubber gaskets; welded (argon arc welding, plasma beam welding) and vacuum nitrogen-filled seals. From the point of view of the sealing effect, the welding seal is the best, and the amount of the filling sealant is poor. For sensors that work in a clean, dry environment indoors, sensors that are sealed by glue may be selected. For sensors that operate in a humid, dusty environment, the diaphragm seal or diaphragm seal must be selected. Vacuum nitrogen filling sensor.
Fourth, flammable, explosive, not only cause complete damage to the sensor, but also poses a great threat to other equipment and personal safety. Therefore, sensors that operate in flammable and explosive environments place higher requirements on explosion-proof performance. In flammable and explosive environments, explosion-proof sensors must be selected. The sealing covers of such sensors must not only consider their tightness, but also Take into consideration the explosion-proof strength and the waterproof, moisture-proof and explosion-proof properties of the cable lead-out.
Fifth, the influence of electromagnetic field on the sensor output disorder signal. In this case, the sensor's shielding performance should be strictly checked to see if it has a good anti-electromagnetic capability.
China's sensor trading network reminds everyone that the above maintenance considerations hope that the majority of friends remember, so as to avoid unnecessary damage to the ground level sensor improper maintenance.
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