Pneumatic Solenoid Valves Manufacturer - Kao Lu
> Products > Proportional Valve > Pressure proportional > High precision high pressure electro - pneumatic proportional valve > QKL-B3H-1.B3H-2 High precision high pressure electro - pneumatic proportional valve
Product Description
The QKL-B3H series is a complete closed loop servo system consisting of two solenoid valves, internal pressure transducer, and electronic controls mounted to an integrated mechanical regulator.
The output pressure is controlled by activating the solenoid valves, which apply pressure to the pilot of the mechanical regulator. The pressure output is measured by an internal pressure transducer to the QKL-B3H and provides a feedback signal to the electronic controls. Since the working pressure sensing is relative to the pilot side, the hysteresis of the integrated mechanical regulator can be eliminated. By
controlling these two valves to maintain precise pressure.
Input commands are either a differential 0-10 VDC or 4-20 mA. The unit comes standard with an electrical monitor signal for tracking pressure which comes from the internal pressure transducer. The uniqueness of the booster design is that it has no stamped gaskets or special molded diaphragm or seal parts.
All of the parts related to normal maintenance are standard O-rings.
Product Specification
Input Signal DC 0-5V / 0-10V / 4-20 mA
Output range(psi) 0-500
Supply pressure max 1.5 times output pressure
Monitor output 4-20 mA / 0-10 V
Power supply DC 24V (≦ 4W)
Response 10~15 millisecond (nominal)
Medium Clean dry gas (40 micro filter)
Repeatability ±0.5 % F.S.
Hysteresis ±0.35 % F.S.
linearity ±0.2 % F.S.
Flow Rate 3000L min @ 7bar
Temp. Range(Operating) 0 - 80℃
Port size / Electrical connection G 3/8" / M12
Life Cycle Over 1 billion times