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Classification： Accessories
Product Name： The Linear Stem Motion Positioner of Pneumatic Valve
Product Description：
In receipt of direct current signal 4～20mA from the controller or control system, the Linear Stem Motion Positioner is a device to control the valve position by transmitting air to linear stem motion pneumatic actuator.
★ There is no resonance phenomenon from 5Hz to 200Hz.
★ It is convenient to convert downward into backward, and spring return into double acting.
★Small actuator can prevent vibration by narrowing orifice of positioner.
★ Owns small air consumption and good cost-effective.
★The products have no need to replace parts to realize stroke-dividing control within 1 / 2 range.
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Project type |
Spring return |
Double acting |
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Input signal |
4－20mA DC |
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Impedance |
250±15 Ohm |
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Input pressure |
1.4～7kgf/cm3(20～100 psi) |
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Stroke range |
10～150mm |
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Air connection |
PT（NPT）1/4 |
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Pressure gauge connection |
PT（NPT）1/8 |
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Power connection |
PF1/2（G 1/2） |
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Explode-proof level |
Ex dm 11B T5 |
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Protection level |
IP66 |
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Ambient Temp. |
Operating Temp. |
－20℃～70℃(－4～158OF) |
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Explode-proof Temp. |
－20℃～60℃(－4～140OF) |
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Linearity |
±1%F.S |
±2%F.S |
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Lag degree |
1%F.S |
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Sensitivity |
±0.2%F.S |
±0.5%F.S |
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Repeatability |
±0.5%F.S |
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Air consumption |
2LPM(Sup=1.4kgf/cm3,20psi) |
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Flow |
80LPM(Sup=1.4kgf/cm3,20psi) |
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Material |
die-casting aluminum |
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Weight |
2.7kg(6.1 lb) |
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