Wuzhong Instrument Control Valve with Valmet Me-tso Neles ND7000 Series Smart Valve Positioner
Neles ND7000 is an intelligent digital valve positioner designed for both rotary and linear control valves across a wide range of industrial applications. Powered by a 4–20 mA loop signal, the ND7000 delivers precise valve positioning, fast response, and reliable diagnostics to improve process efficiency and minimize variability.
The device supports single-acting and double-acting actuators and features advanced self-diagnostics, contactless position sensing, and robust IP66 protection. Its modular architecture allows easy integration with modern DCS and asset management systems through HART communication.
- Suitable for rotary and linear valves
- Compatible with single and double-acting actuators
- 4–20 mA loop-powered operation with HART communication
- Fast and accurate valve positioning
- Contactless position measurement technology
- IP66 / NEMA 4X rugged enclosure
- SIL 2 certified according to IEC 61508
- Low air consumption and low energy consumption
- Easy local and remote configuration
- Built-in diagnostics and offline testing
- Excellent vibration and temperature resistance
- Supports retrofit installations for existing valve systems
| Parameter | Specification |
|---|---|
| Product Type | Digital Valve Controller |
| Input Signal | 4–20 mA with HART |
| Power Supply | Loop Powered |
| Communication Protocol | HART 6 / HART 7 |
| Valve Type | Rotary & Linear |
| Actuator Type | Single & Double Acting |
| Travel Range (Linear) | 10–120 mm |
| Rotation Range | 45–95° |
| Protection Class | IP66 / NEMA 4X |
| Operating Temperature | -40°C to +85°C |
| Supply Pressure | 1.4–8 bar |
| Pneumatic Connections | G1/4 or 1/4 NPT |
| Position Accuracy | Dead band ≤0.1% |
| Hysteresis | <0.5% |
| Air Consumption | <0.6 Nm³/h |
| Housing Material | Anodized Aluminum Alloy |
| Communication | Local UI + Remote Configuration |
| Certifications | ATEX, IECEx, INMETRO, CCC |
| Weight | 1.8 kg (ND7100), 3.4 kg (ND7200) |
The Neles ND7000 digital valve controller is widely used in:
- Oil & Gas
- Petrochemical Plants
- Chemical Processing
- Power Generation
- Pulp & Paper Industry
- Water Treatment Systems
- Mining Operations
- Industrial Automation Systems
It is especially suitable for critical control loops requiring stable and accurate valve performance.
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What communication protocol does the ND7000 support?
The ND7000 supports HART communication for remote diagnostics, calibration, and configuration.
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Can the ND7000 be used on both rotary and linear valves?
Yes. The controller is designed for both rotary and linear valve applications.
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Is the device suitable for hazardous areas?
Yes. Multiple hazardous area certifications are available, including ATEX, IECEx, INMETRO, and CCC approvals.
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Does the ND7000 require external power?
No. The device is loop-powered through the 4–20 mA control signal.
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What diagnostics functions are included?
The controller includes self-diagnostics, deviation trend monitoring, counters, and offline testing functions.
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