Pressure control
PULSTRONIC
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Unlike SENTRONIC valves, PULSTRONIC valves operate with pulsed pilot valves which
change the pressure in a control chamber. A pressure booster converts the pilot pressure
into an outlet pressure with increased flow. The outlet pressure is measured with
a pressure sensor and fed into the internal control loop. The set-point is established
over the electrical plug-in connector as a standard signal [0 to10 V, 0(4) to 20 mA]..
The PULSTRONIC is particularly suited for pressure control applications with a
constant flow, e.g. flow control over nozzles, turbine speed control, glue and lacquer
dosing, pressure control of welding equipment. |
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OPERATING PRINCIPLE
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| Applying pressure
The pressurisation piston is operated
and the flow from port 1 to port 2 is
released.
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Maintaining pressure
The exhaust piston is in its central
position: the flow between port 2
and port 1 or port 3 is blocked.
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Exhausting pressure
The exhaust piston is lifted and the
flow from port 3 to port 2 is released.
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| TECHNICAL CHARACTERISTICS |
| Fluids : |
Air and gases |
| Pressure range: |
0 to 10 bar |
| Ports : |
M 5 (directly operated)
G 1/8, G 1/4, G 1/2 , various pad mounting versions |
| Construction : |
poppet valve |
| Actuation: |
Pulsed 2/2-way valves |
| Set-point: |
0-10 V, 0-20mA, 4-20 mA
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| Options : |
Internal pressure switch
Feedback output from 0 to 10 V |
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| Advantages : |
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Two options available in case of loss
of voltage:
- Maintenance of pressure
- Exhaust of outlet |
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Minimum hysteresis |
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Quick pressure changes,
low
overshoot
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Standard filtration at 50 µm |
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No constant air consumption |
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Stable pressure control at continuous
flow |
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Proportional technology
Literature