Dedicated catalogues Proportional technology

Pressure control / flow control
SERVOTRONIC
Greater versatility in automated production processes: due to electronics, the new generation of SERVOTRONIC products increases the range of application and performance of pneumatic components. The two SERVOTRONIC versions directly respond to all pressure and flow control needs and indirectly meet the performance in the control of physical variables, such as position, velocity, acceleration, force, mass etc..The combination of innovative pneumatic technology, high-precision mechanics and modern electronics allows for quick control of flow or pressure in a pneumatic actuating system in relation to a signal received from the controlling electronics. The SERVOTRONIC valve is used for flow control (proportional flow) and is provided with a precision-lapped spool and sleeve with hardened and tempered surface allowing for very high pulse frequencies at extremely short response times. The SERVOTRONIC valve has a constant air consumption
OPERATING PRINCIPLE
Flow control

The SERVOTRONIC flow control version consists of a spool and sleeve servo-valve with three ports, a position sensor and control electronics to define the spool position in proportion to a given set-point. If the loss of pressure at the SERVOTRONIC valve is greater than half of the supply pressure, the flow is proportional to the set-point.

 Pressure control

The SERVOTRONIC pressure control version consists of a spool and sleeve servo-valve with three ports and control electronics to define the pressure in proportion to a given set-point. The spool position can be changed continually to maintain a constant outlet pressure in relation to a given set-point signal.
TECHNICAL CHARACTERISTICS
Fluids : Air and neutral gases
Pressure range: 0 to 10 bar
Ports: G 1/4
Flow: 0 to 1400 l/min</td>
Construction : Spool and sleeve valve
Actuation : Proportional solenoid
Set-point: 0-10 V, 0-20mA,
4-20 mA
Cut-off frequency: 150 Hz
Two "failsafe" positions are available when current cut off :
- Pressure released (open center)
- Pressure held (closed center)
Advantages : Minimal hysteresis
Extremely short response times
Excellent flow characteristics
Compact monobloc construction with integrated electronics and sensor
High reliability and long service life due to precision mechanics combined with simple control technology
Different set-point signals (voltage and current) for the pressure control version
Electrical connection with plug-in connector
Two versions:
one for flow and one for pressure control
Literature
Flow control or pressure control - general
Servovalve G 1/4 for flow-rate control
Servovalve G 1/4 for pressure control
Accessories
Pressure/Flow regulation applications
Non-animated

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