China Linear Rotary Actuators Control Valves Neles ND7000 ND9000 Digital Valve Controller with HART Protocol SIL 2 IP66
The Neles ND7000 is an intelligent digital valve controller designed for pneumatic linear and rotary actuators in process industries. Featuring HART 7 or FOUNDATION Fieldbus communication, it offers ±0.5% positioning accuracy with advanced online diagnostics via Neles Valve Manager software. The non-contact magnetic position sensor ensures wear-free operation, while low steady-state air consumption (less than 0.3 Nm³/h) reduces operating costs. With IP66/IP67 enclosure and SIL 2 certification, the ND7000 delivers reliable performance in harsh environments, enabling predictive maintenance and seamless integration into DCS systems for oil & gas, refining, and pulp & paper applications.
- HART 7 / FOUNDATION Fieldbus: Full digital integration and diagnostics.
- Online Valve Signature: Friction, stiction, and performance analysis.
- Non-Contact Sensor: Magnetic feedback for zero wear.
- Auto-Calibration: One-button setup with local interface.
- Low Air Consumption: less than 0.3 Nm³/h steady state.
- SIL 2 Capable: Safety instrumented systems ready.
- IP66/IP67: Dust-tight and submersible protection.
- Local UI: Backlit LCD with push buttons.
| Parameter | Specification |
|---|---|
| Input Signal | 4-20 mA HART 7 / FOUNDATION Fieldbus |
| Positioning Accuracy | ±0.5% of span |
| Air Supply | 1.4–8 bar (20–115 psig) |
| Air Consumption | less than 0.3 Nm³/h (steady), less than 2.0 Nm³/h (dynamic) |
| Temperature Range | -40°C to +85°C |
| Enclosure | IP66/IP67, NEMA 4X |
| Hazardous Area | ATEX, IECEx, FM, CSA (intrinsically safe/explosion-proof) |
| Actuator Compatibility | Linear (IEC 60534-6) and Rotary (VDI/VDE 3845) |
| Diagnostics | Valve Manager (signature, step response, performance) |
| Weight | 2.6 kg (aluminum), 5.0 kg (stainless) |
- Oil & Gas: ESD and pipeline control valves.
- Refining: FCCU and hydrocracker regulation.
- Pulp & Paper: Digester and bleach plant control.
- Chemical Processing: Reactor feed and pH control.
- Power Generation: Boiler feedwater and steam conditioning.
HART 7 and FOUNDATION Fieldbus H1.
Yes, one-button auto-tune via local UI or software.
less than 0.3 Nm³/h in steady state.
Yes, for ESD valve proof testing.
Yes, 316L option for corrosive environments.
For more information about the Neles ND7000, pricing, or to request a demo, contact our team:
- Email: edwardzhao@gbsxj.com
- Phone: +8615000725058
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