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绿线--符合EMC标准的测量电缆可程度地减少电磁干扰的影响

自1996年以来，在欧洲国内市场上出售的所有电气和电子设备都必须符合EMC指令2004/108 / EC并带有CE标志。 HBM通过遵守EN 61326产品系列标准来确保所有HBM设备的一致性，该标准定义了电磁干扰限制和电磁抗扰性测试水平。通过在HBM认可的内部EMC实验室中进行测试，可以确保符合该标准的要求。

电气保护措施

电磁环境污染在过去几年中稳定增长，对测量设备的电磁干扰免疫力提出了越来越高的要求。潜在的干扰源是：

无线电设备

手机

电磁阀

接触器

继电器

焊接设备

电力线路

等等

这些干扰源可能会产生电磁场，电磁场会通过连接电缆和设备外壳将干扰电压感应地或电容性地耦合到相应的测量电路中，从而影响设备的工作方式。

必须确保系统中使用的设备本身不会产生电磁干扰。

电磁兼容性（EMC）结合了所需的电磁抗扰性或磁化率（EMS）和允许的电磁干扰（EMI）的概念，在过去几年中变得越来越重要。测试了整个测量链中所有电气/电工组件的电磁干扰和抗扰性，并在HBM认可的内部实验室中分析了技术安全问题，从而确保满足所有规范要求。这些测试导致了``屏蔽设计''，该设计可确保HBM设备安全且无故障运行，并且不会对环境造成任何干扰，也不会给主电源过度负载。

Harmonization of national regulations

Since 1996, all electric and electronic equipment for sale on the European domestic market have to comply with EMC Directive 2004/108/EC and carry the CE marking. HBM ensures conformity of all HBM equipment by adhering to the EN 61326 product family standardwhich defines both the limits for electromagnetic interference and the test levels for electromagnetic immunity. Compliance with the requirements of this standard is ensured through testing in HBM’s accredited in-house EMC laboratory.

Electric protection measures

Electromagnetic environmental pollution, which has grown steadily over the past years, places ever increasing demands on the immunity to electromagnetic disturbances of measuring equipment. Potential sources of interference are: 

• Radio equipment
• Mobile phones
• Solenoid valves
• Contactors
• Relays
• Welding equipment
• Power lines
• etc.

 

These sources of interference may cause electromagnetic fields which couple interference voltages into the respective measuring circuits inductively or capacitively through connecting cables and equipment housings and thus affect the way the equipment works.

It is essential to ensure that the equipment used in the system itself does not emit electromagnetic disturbances.

Electromagnetic compatibility (EMC) which combines the concepts of required electromagnetic immunity or susceptibility (EMS) and permitted electromagnetic interference (EMI) has become increasingly more important over the past years. The electromagnetic interference and immunity of all electrical/electrotechnical components of the complete measuring chain are tested and technical safety issues are analyzed in HBM’s accredited in-house laboratory, thus ensuring that all normative requirements are satisfied. These tests have resulted in a shielding design which ensures that HBM equipment operates safely and failure-free, and that it does not emit any disturbances into the environment nor excessively load the mains power supply.

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