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QL3 High Resolution Valve Series
Brand: Proportion-Air, IncThe QL3 (high resolution, high flow electro-pneumatic pressure regulator) allows high volumes of air to move quickly and precisely at pressures up to 150 psig using proportional solenoid valves with a unique analog PID circuit.
The QL3 improves and builds on the proven technology of the Proportion-Air QB3 series by using a current driven variable orifice solenoid valve and a unique analog PID circuit.
This variable orifice solenoid avoids the pressure “steps” prevalent in most feed and bleed I/Ps.
The PID integrates error out quickly resulting in superior resolution. The combination of a step-less solenoid valve with a high speed analog PID on a high flow volume booster allows a lot of air to be moved in a hurry, but precisely.
The output is proportional to the electrical input or command signal and an analog monitor output signal is standard.
Specifications
Brand
Pressure Range
- 0 to 5 psi thru 0 to 150, 10.3 bar
Resolution
- ± 0.05 % of Full Scale
Accuracy
- ± 0.4 % of Full Scale
Maximum Flow
- 25 scfm, 708 LPM
Port Size
- 1/4" NPT, BSPP Available
Durability
- Immune to vibration & shock (up to 20 Gs)
Operating Temperature
- 32° to 158° F (0° to 70° C)
Filtration
- 40 micron