Bürkert Control Head for Decentralised Automation of ELEMENT Process Valves Type 8695

The device key 8695 control head is designed for decentralised automation of ELEMENT Type 21xx pneumatic process valves with smaller nominal diameters. The valve position is registered via contact-free, analogue sensor element which automatically detects and saves the valve end position via the Teach function during start-up. The integrated pilot valve controls single or double-acting actuators. The design of the control head and actuator is specially configured for the requirements of hygienic process environments and enables internal pilot air duct routing without external piping. In addition to the electrical position feedback, the device status is shown directly on the control head itself via coloured LEDs. An optional AS-Interface communication interface can be selected. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing in the food, beverage and pharmaceutical industries. Combined with Bürkert ELEMENT actuators, the pneumatic actuating system enables spring chamber aeration that avoids actuator chamber contamination from the environment.

Body

PPS, stainless steel

Seal

EPDM

Configuration tool

Bürkert Communicator

Setting valve end position

Automatically via teach function or manually (for device version without pilot valve)

Digital

IO-Link, Bürkert system bus (büS) (based on CANopen)

Valve spindle

2.5…32 mm

Multipole version

Circular plug M12

Control medium

Neutral gases, air, quality class according to ISO 8573 - 1

Dust content

Class 7 (< 40 µm particle size)

Particle density

Class 5 (< 10 mg/m3)

Pressure dew point

Class 3 (<- 20 °C)

Oil content

Class X (< 25 mg/m3)

Supply pressure

0…7 bar

Pilot air port

Threaded connection G ⅛, stainless steel

Air capacity

7 lN/min (for aeration and ventilation)

HS Code

8481.80

• Burkert 8695
• Buerkert 8695
• Bürkert 8695
• Type 8695
• Burkert Type 8695