The Neles ND9000 Intelligent Valve Positioner is a high-performance intelligent valve controller designed for precise control of rotary and linear control valves in demanding industrial applications. Developed for pneumatic actuators, the ND9000 series supports HART, Foundation Fieldbus, and Profibus PA communication protocols, delivering advanced diagnostics, reliable operation, and excellent control accuracy.
The positioner features a rugged modular design with IP66/NEMA 4X protection, making it suitable for harsh process environments such as oil & gas, chemical processing, power generation, pulp & paper, and petrochemical industries. Its advanced self-diagnostics and online valve signature functions help improve plant reliability and predictive maintenance efficiency.
| Parameter | Specification |
|---|---|
| Product Type | Intelligent Valve Positioner |
| Model Series | ND9000H / ND9000F / ND9000P |
| Communication | HART, Foundation Fieldbus, Profibus PA |
| Input Signal | 4–20 mA |
| Supply Pressure | 1.4–8 bar (20–115 psi) |
| Operating Temperature | -40°C to +85°C |
| Low Temp Option | -53°C to +85°C |
| Protection Class | IP66 / NEMA 4X |
| Housing Material | Aluminum Alloy / Stainless Steel |
| Position Feedback | Contactless Sensor |
| Air Medium | Instrument Air or Nitrogen |
| Mounting Standard | VDI/VDE 3845, IEC 60534-6 |
| Valve Type | Rotary and Linear |
| Power Supply | Loop Powered or Bus Powered |
| Control Action | Single or Double Acting |
| Communication Diagnostics | Supported |
| Certification | ATEX, IECEx, CSA, SIL2 |
| Humidity Range | 0–100% RH |
| Weight | 1.8–8.6 kg depending on model |
The Neles ND9000 intelligent valve positioner is widely used in:
Its advanced diagnostics and accurate positioning make it ideal for critical control loops requiring high reliability and stable performance.
What communication protocols does the ND9000 support?
The ND9000 supports HART, Foundation Fieldbus, and Profibus PA communication protocols.
Can the ND9000 be used with both rotary and linear valves?
Yes. The positioner is compatible with both rotary and linear pneumatic actuators.
Is the ND9000 suitable for hazardous areas?
Yes. The product is available with ATEX, IECEx, CSA, and other hazardous area certifications.
Does the ND9000 support predictive maintenance?
Yes. It includes advanced diagnostics, online valve signature analysis, and performance monitoring features.
What is the enclosure protection rating?
The standard enclosure protection is IP66 and NEMA 4X.
What air supply media can be used?
Clean instrument air or nitrogen can be used as the supply media.
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