How to use the weighing instrument?
1. As far as possible, some partitions should be set around the weighing instrument, and even the sensor should be covered with a thin metal sheet. This can prevent dirt from contaminating the sensor and some moving parts, and this kind of dirt usually makes the moving part of the fitness exercise uncomfortable and harms the weighing precision. Whether the system software is uncomfortable for fitness exercises can be distinguished in the following ways. That is, add or subtract about one-thousandth of the rated load on the weighing platform to see if the weighing indicator is reflected, which indicates that the moving part is not dirty. 2. All transmission lines leading to the display information power circuit or from the power circuit should be shielded twisted pair. The connection and address of the shielded cable should be valid. If the grounding device is not based on the structure of the mechanical equipment, the grounding device shall be grounded outside, but the grounding device is not connected after the shielded cables are connected to each other, which is suspended. Note: There are 3 sensors that are connected in parallel. The sensor itself is a 4-wire system, but the connection method is changed to a 6-wire system in the wiring terminal. The sensor output data signal reading power circuit should not be placed in the same housing with the thyristor, AC contactor, etc., which can cause obvious effects, and the machinery and equipment caused by abundant heat. If this cannot be ensured, then It should be considered to set a baffle between them to protect them, and install a cooling fan in the box body. The electronic circuit used to accurately measure the output data signal of the sensor should be equipped with a separate power supply system transformer as much as possible, instead of using the same main switching power supply with machinery and equipment such as AC contactors. 3. The sensor should use hinged copper core wire (cross section about 50mm2) to bypass the electrical equipment to protect them from arc welding current or damage caused by lightning strikes. In sensor applications, it is important to prevent significant heat transfer, especially on one side. 4. Protect the ground plane (such as the communication cable of the sensor, do not process the layout in parallel with the weak current power plug or control line (for example, it is not necessary to put the sensor power line, the weak current power plug and the control line in the same pipeline). If they must be processed in parallel Place them, then the spacing between them should be maintained above 50CM, and the power cord should be covered with a metal hose. 5. As far as possible, use structural parts with automatic and precise positioning (calibration) functions, such as ball rolling bearings. , Articulated bearings, precise positioning tighteners, etc. They can avoid some lateral force effects on the sensor. It should be shown that some lateral forces are not caused by the installation of mechanical equipment, such as lateral force caused by thermal deformation, and lateral force caused by wind speed. The force, and the horizontal force caused by the vibration of the stirring device on some container electronic weighing instruments is not caused by the installation of mechanical equipment. Some electronic weighing instruments must receive the accessories on the scale body (such as the feeding pipe of the container scale, etc.) , You should make them as soft as possible in the position where the sensor is loaded into the spindle bearing, so as to avoid them swallowing the real load of the sensor and causing deviation. 6. Handle with care, especially aluminum alloy. The small volume sensor made of polyurethane elastomer is likely to cause great harm to its metrological verification characteristics due to its impact and fall. Generally speaking, a weighing instrument with a large space has a large self-weight, so It is stipulated that appropriate hoisting machinery and equipment (such as manual hoist, electric hoist, etc.) should be used as much as possible during transportation and installation. The mounting surface of the base where the sensor is installed should be leveled and cleaned, and there is no slick oil, adhesive paper, etc.. Installation base The seat itself needs to have sufficient compressive strength and rigidity, which is generally specified to be higher than the compressive strength and bending rigidity of the sensor itself.
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