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Comprehensive Guide to Electric Butterfly Valves: Principles, Applications, and Advantages
Electric butterfly valves play a crucial role in industrial automation, off...
L8A-100 electric valve positioner is a device that receives 4 ~ 20mA DC signal control and precisely adjusts the valve opening through pneumatic actuator.
L8A-100 electric valve positioner is a device that receives 4 ~ 20mA DC signal control and precisely adjusts the valve opening through pneumatic actuator. The positioner is equipped with an air filter pressure reducer to display the opening (percentage) of the valve position and output feedback signal (4 ~ 20mA). The compressed air of the pressure of 5~10kgf/cm² can be directly connected to the "SUP" input interface of the positioner.
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| Note |
For the safety of installation personnel, products and systems, please observe the safety precautions in this manual when installing or commissioning this product. |
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Improper modification or repair of the product may cause damage. Please contact us if you need to repair or modify this product. |
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This product is an accessory of control valve. Please observe the operation precautions of corresponding control valve at the same time during operation. |
●Please handle with care during transportation, installation and use. Excessive vibration and impact may damage the product.
●Do not use beyond the scope of product technical p arameters.
●Do not store products in high temperature and high humidity environment for a long time. When using, it should be covered to prevent rainwater from entering into the product.
The warranty period of the product is subject to the date of manufacture with a warranty period of 1 years.
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Item |
L8A-100L |
L8A-100R |
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Single action |
Dual action |
Single action |
Dual action |
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Input signal |
4~20mA DC |
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Impedance |
250±15Ω (model without feedback) |
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Supply pressure |
1.4~7.0kgf/cm2（20~100psi） |
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Stroke |
10~150mm |
0~90º |
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Air source interface size |
PT(NPT) 1/4 |
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Pressure gauge interface size |
PT(NPT) 1/8 |
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Power supply inerface size |
PF 1/2 (G 1/2) |
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Protection level |
IP66 |
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Ambient temperature |
Working tempereture |
Standard model: -20~70℃ |
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Explosion proof temperature |
-20~60℃ |
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Linearity |
±1.0% F.S |
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Hysteresis |
1.0% F.S |
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Sensitivity |
±0.2% F.S |
±0.5% F.S |
±0.2% F.S |
±0.5% F.S |
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Repeatability |
±0.5% F.S |
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Air consumption |
3LPM (Sup=1.4kgf/cm²,20psi) |
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Flow |
80LPM (Sup=1.4kgf/cm²,20psi) |
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Material |
Die casting aluminum |
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Weight |
2.5Kg |
2.5Kg |
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Model with number display function/feedback function |
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Input signal |
4~20mA DC (two-wire system) |
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Input load voltage |
MAX 15V |
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Feedback signal |
4~20mA DC (two-wire system) |
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Feedback signal power |
DC 24V±15% |
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