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 Grounding electronics to eight scales: 
 1 Earth work 
 1T double electronic scales, 2T double weighbridge, 3T double electronic platform scales to meet the electric power system or operational requirements, while weighing the power system or a point to ground, as ground work, such as the use of TN-S system three-phase five-wire power supply, it has a good grounding. 
 2 lightning protection and grounding 
 To prevent over-voltage lightning harm to persons or equipment, and set the ground over-voltage protection devices, known as the lightning protection grounding, such as tall buildings and large equipment, net natural lightning, the lightning rod tower equipment, general equipment, ground arrester and so on. 
 3 protective earth 
 To prevent damage to the insulation of electrical equipment causing bodily harm, to metal-to-ground voltage within the voltage limits in a safe, accessible to the exposed electrical equipment grounding conductor portion, known as protective ground. Such as: electrical appliances, metal, weighing gear and so on. 
 4 Repeat the ground 
 In the low voltage distribution system TN-C system, in order to prevent loss of neutral ground fault protection, resulting in electric shock and damage to the equipment, repeated neutral ground (so that it becomes TN-CS system) . 
 5 anti-static grounding 
 In order to eliminate static electricity cause harm to persons and equipment to conduct the ground, such as some of the liquid or gas pipelines or metal vehicles and electronic equipment enclosure grounding. 
 6 shield grounding 
 In order to prevent the parasitic capacitance between circuits because there is mutual interference, the circuit of the external electric field or electric field of radiation-sensitive, must make the necessary isolation and shielding, the isolation and shielding of the metal must be grounded. Ground as filter: filter generally contains the signal line or power line bypass capacitor to ground, when the filter is not grounded, the capacitor is in a suspended state, would not achieve the bypass effect. Another example is noise and interference suppression: the internal noise and external interference control equipment or systems need many points to ground, so as to interfere with the signal to provide "minimum resistance" channel. 
 7 The special requirements of the ground 
 Such as weak systems, computer systems and pressure systems in the ground, when the neutral point directly grounded or grounding via low resistance, should be weak systems, computer system requirements and perform in pressure. 
 8 places flammable protective grounding of electrical equipment 
 Flammable and explosive places the electrical equipment, machinery, metal pipes and metal structures of buildings should be grounded, and the laying of pipe joints in the cross-wiring. 
 Electronic Scale Category: 
 1 divided by the principle: mechanical and electrical integration of electronic scales weighing scales mechanical 
 (2) by function: counting scale pricing scale weight scale 
 3 Purpose: Industrial Scale Commercial Scale Special Scale 
 4 according to the placement category: 
 Table Scale: full name refers to the amount of electronic scales in the following 30Kg 
 Scales: full name refers to the amount within the 30-300Kg electronic scale 
 Loadometer: full name refers to the amount of electronic scales in more than 300Kg 
 5 Press the accuracy of classification: 
 Class I: Special balance precision ≥ 1 / 10 万 benchmark scales 
 Level II: High-precision scales 1 / 10 000 ≤ precision <1 / 100 000 Precision Scale 
 Class III: the accuracy of the balance 1 / 1000 ≤ precision <1 / 10 000 industries. Commercial Scale 
 Class IV: General Scale 1 / 100 ≤ precision <1 / 1000 coarse scales 
 The platform scale is designed for chemical, food, pharmaceutical, paper industry, designing and manufacturing for material tank / reactor electronic platform weighing scales, feed tank / reactor mounted on platform scales. Materials of high quality carbon steel weighing platform, use single shear beam load cell sensor, supporting intelligent display control instrumentation. Electronic platform scales such a high level of accuracy, fast weighing, easy operation, stable and reliable calibration of installation and maintenance. Use: chemical, food, pharmaceutical, paper industry, feed tank / reactor weighing. Structural characteristics: the form of platform scales, calibration-free installation and easy maintenance framework to overcome the ordinary platform scale replacement of the sensor inconvenient drawback tops, light board, feed tank / reactor installation on the table no junction box mounting holes, using the morning-type pumping installation table to open a hole, user-friendly installation with discharge tubes or 4 ~ 20mA analog output and preset output optional explosion-proof specifications: accurate rating: (III) weighing indicator Operating temperature: -10 ℃ ~ +40 ℃ Suitable platforms / sensors working temperature: -20 ℃ ~ +65 ℃ Power Supply: 110-220AVC ,50-60HZ 
 Fish are widely used in port administration, transportation, iron and steel metallurgy, coal energy, rubber, paper, metal recycling, cable manufacturing and mining enterprises and other fields of cargo weighing, material and out of statistics, warehouse inventory control, process measurement, the finished product weight identification weighed.