This Bürkert position feedback unit (type 8697) is mounted on top of Bürkert type 21XX valves with ELEMENT 50 mm actuators. The unit transmits the valve end positions, The unit has G 1/8 inch female threaded ports to connect the air lines and an M16 x 1.5 cable gland for electrical connection. This unit contains an internal pilot valve to control the airflow, so an external pneumatic control valve is not required. This unit is IECEx certified.
Pros:
- Compact and durable design
- IECEx certified
- Optical position indicator with LED
- Easy to clean and high IP65/67 protection make it suitable for food, beverage and pharmaceutics
Cons:
- Requires additional control valve since it doesn`t have an integrated air pilot valve
Series
Burkert type 8697 is a pneumatic position feedback and control unit, designed for decentralized automation of ELEMENT and CLASSIC process valves. It registers the valve position via mechanical or inductive limit switches. External tubing is not needed, because the device has internal control air routing. LEDs show the status of the device along with the electrical position feedback directly on the unit itself. It is suitable for food, beverage and pharmaceutical industries thanks to the easy to clean housing, proven IP protection and chemically resistant materials.
Specifications
Function : Position feedback sensor
Connection size : 1/8 inch
Connection type : Inner thread cylindrical BSPP-G
Mounting type : ELEMENT drive
Actuator size : 50 mm
Feedback voltage type : DC
Manual actuation : No
Feedback type : Inductive proximity switch NAMUR
Temperature environment min (°C) : 0
Temperature environment max (°C) : 55
Approval : IECEx Zone 1,IECEx Zone 21,IECEx Zone 2,IECEx Zone 22
Electrical connection sort : Screw terminal with cable feed-through
Pneumatic function 1 double acting : No
Pneumatic function 1 single acting : No
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