Product Category
Smart Positioner
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"aira” offers an electro-pneumatic SMART valve positioner with a position transmitter (single-acting). General: APP8000 Serial smart valve positioner is designed to operate rotary or linear pneumatic valve actuator. Through the pneumatic actuator, the positioner controls the valve to the required position when collecting a standard electrical current signal or computer signal. This smart valve positioner includes a piezo & pilot valve, inductive position sensor and control CPU, etc. By using the advanced piezo valve and pilot valve of HOERBIGER-ORIGA company as pneumatic driver sets, the response time of the piezo valve is under 2ms while the pilot valve response time bellows 20ms, which could ensure the valve a very high adjusting precise and short response time. As the positioner do not need air itself, when the valve reach the required position, the air consumption could even be overlooked.
Principle The principle is different from the traditional electro-pneumatic valve positioners which use nozzle flapper structure. Advanced PID fuzzy control software in the CPU, auto adapting parameter of PID, it makes the control fast, steady, and exact (Fig.1).32 letter LCD version and four push buttons meet all the requirements of parameters input, zero, and span adjusting or split range. The valve position adjusting could be done without any other instruments at the working place Auto Calibration: The smart valve positioner is combined with the function of a digit valve controller and performance monitor. Features:
- Smart valve positioner uses two-wire lines. It takes a 4-20mA input signal as its power, signal drop voltage is 9.2 equal to load resistance 46017.
- 4-20mA feedback module and limit switch module are optional. Freely set alarm value and output status of limit switch.
- The pressure sensor with an optional measuring diaphragm can run self-diagnoses according to its history record. Self-diagnoses include: pressure air stopped, valve locked, positioner failure, valve posited time, diaphragm or cylinder air leaking, packing abrasion and ventileinheit abrasion, etc.
- 4-12mA and 12-20mA split range.
- Adjustable sensitivity.
- It is available to choose the output characteristics, such as linear, equal percentage, quick open, and user-defined.
- Low power consumption, low air consumption, and running costs. Piezo valve control, the positioner does not consume air itself, when the valve reaches the required position, the air consumption could even be overlooked(it can save more money than a traditional valve positioner).
- High sensitivity, high precision, and short response time.
- 32 letters LCD, clear showing.
- Module designing is compact and reliable.
Specifications:
| Input Signal | 4-20mA(two-wire) |
| Air Supply | 1.4~7.0bar |
| Stroke | Linear: 10-150mm, Rotary: 0-100° |
| Flow Rate(max) | 130L/min(at6.0bar) |
| Impedance | 460ohm |
| Response Time | <20ms |
| Sensitivity | 0.08mA or < ±0. 5% |
| Linearity | 1.00% |
| Hysteresis | 2% |
| Precision | 0.50% |
| Repeatability | 0.50% |
| Air Consumption | 0.0006Nm 3 /h when the positioner is steadying |
| Ambient Temperature | -30°C~+60°C |
| Air Connection | 1/4NPT |
| Conduit | M20xl.5, l/2NPT |
| Weather Proof | IP65 |
| Explosion Proof | ExiaIICT6 |
| Material | Aluminum alloy |
| Weight | 1.8kg |
Assembly
| 1. Output Port | 11. Aluminum Alloy Protecting Cover of PCB |
| 2. Input Port | 12. Inductive Position Sensor |
| 3. Throttle | 13. Driven Gear |
| 4. Signal Input Port | 14. Driving Gear |
| 5. Earth Lug | 15. Feedback Shaft |
| 6. Terminal Trip | 16. Spring for Initializing Inductive Position Sensor |
| 7. Terminal Trip | 17. Body |
| 8. LCD | 18. Cover |
| 9. Button | 19. Exhaust Port |
| 10. Piezo & Pilot Valve | 0.50% |
Dimensions:
