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PQ1
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描述:
The pneumatic proportional valve produces outlet pressure in
proportion to an electrical command input signal. It comprises
a complete closed loop servo system consisting of valves,
manifold, housing and electronic controls.
Single_loop:
Pressure is controlled by two solenoid valves. One valve
functions as inlet control, the other as exhaust. The pressure
outlet is measured by an internal pressure transducer which
provides a feedback signal to the electronic controls. This
feedback signal is compared with the command input signal.
Any difference between the two signals causes one of the two
solenoid valves to open, allowing flow into or out of the system.
Accurate pressure is maintained by these two valves.
Accuracy:
Linearity / Hysteresis = ± 0.15 % FS
Response sensitivity = < 0.1% FS
Repeatability = ± 0.02% v.E
Total accuracy = ± 0.2 % V.E.
Supply_voltage: 15...24 V DC, residual ripple < 10%, with reverse voltage protection
Command signal: 0-10V, 4-20mA as an option
