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burkert 8697-00255863防爆電磁閥英文介紹：

The pneumatic control unit Type 8697 is designed for decentralized automation of process valves ELEMENT Type 21xx. Mechanical or inductive limit switches register the position of the valve. The integrated pilot valve controls single-acting actuators. The design of the control unit and the actuator enables an internal control air routing without external tubings. Besides the electrical position feedback signal the status of the device is shown directly on the control unit itself via LEDs. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing, in food, beverage and pharmaceutical industries. Combined with Bürkert ELEMENT actuators the unique pilot valve system enables a compressed air recycling that avoids actuator chambers contamination from the environment.

burkert 8697-00255863防爆電磁閥特點：

• Compact Design
• Integrated pilot valve with manual override
• Integrated control air routing
• Automatic end position adjustment
• With ATEX II cat. 3G/D and cat. 2D/G approval

可以安裝在相對靜止的物體（如固定架、門框等，簡稱靜物）上或者運動的物體（如行車、門等，簡稱動物）上。當動物接近靜物時，開關的連桿驅動開關的接點引起閉合的接點分斷或者斷開的接點閉合。由開關接點開、合狀態的改變去控制電路和電機。