VM4 Manual Tester for Turbo Pneumatic Actuators

The VM4 is a tool designed for testing and adjusting pneumatic and electropneumatic actuators, ensuring precision and control during calibration operations.

Dual reading: pressure and vacuum

One of the distinctive features of the VM4 is the presence of a separate pressure gauge and vacuum gauge, which allow clear and precise readings:

• Pressure gauge (blue)
  • range: 0 → 2,5 bar
  • covers automotive, commercial, and industrial applications
• Vacuum gauge (red)
  • range: 0 → -1 bar
  • operating capacity up to about -0,9 bar

This separation allows greater precision compared with traditional systems, which use a combined scale.

Manual operation

The VM4 is a manual tester, designed to give the operator direct control:

• generation of pressure or vacuum through manual actuation
• progressive and controlled adjustment
• maximum sensitivity during calibration operations

Applications

The VM4 allows the adjustment of:

• actuators for variable-geometry turbines
• actuators for turbines with bypass valve (wastegate)
• pneumatic and electropneumatic systems

Integration with VNT Connect

For electropneumatic actuators, the VM4 can be used in combination with VNT Connect:

• VM4 → generates pressure or vacuum
• VNT Connect → manages the electrical signal

Advantage

• complete actuator control
• realistic simulation of operating conditions
• greater precision in adjustment

Superior precision

Unlike traditional testers:

• it does not use a single combined pressure gauge
• it offers dedicated, more readable scales
• it ensures greater resolution in measurements

Result

• more accurate adjustments
• reduction of errors
• greater reliability of the turbo system

In summary

The VM4 is an essential tool for:

• testing and calibration of actuators
• precise work on turbo systems
• integration with our VNT Connect

It offers an ideal balance between operational simplicity and professional precision.