The Neles ND7000 from Valmet is a robust digital valve controller engineered for reliable operation across all control valve actuators in diverse industrial sectors. It delivers benchmark control performance for both rotary and linear valves, ensuring end-product quality with minimal process variability. As a future-proof investment, it features life-time support, low energy consumption, and seamless retrofitting to existing Neles or third-party installations. Powered by a 4-20 mA loop with HART communication, it includes a Local User Interface (LUI) for on-site configuration and basic diagnostics like deviation trends and counters. Available in standard (ND7100) and flameproof (ND7200) enclosures, it's SIL 2 certified (IEC 61508) by TÜV for safety-critical applications.
| Parameter | Details |
|---|---|
| Travel Range | Linear: 10–120 mm; Rotary: 45–95° (measurement up to 110°) |
| Supply Pressure | 1.4–8 bar (20–115 psi) |
| Air Quality | ISO 8573-1: Solids Class 5, Humidity Class 1, Oil Class 3 |
| Ambient Temperature | -40°C to +85°C (-40°F to +185°F) |
| Enclosure | ND7100: Aluminum/polymer (IP66/NEMA 4X); ND7200: Aluminum/glass (IP66/NEMA 4X) |
| Electronics (HART) | 4–20 mA loop-powered; Min signal 3.6 mA; Load voltage up to 9.7 VDC/20 mA |
| Performance | Dead band ≤0.1%; Hysteresis <0.5% |
| Pneumatic Capacity | 5.5–38 Nm³/h at 4 bar (spool 2–6) |
| Consumption | <0.6–1.0 Nm³/h steady state |
| Influence Factors | Temp: 0.5%/10°K; Supply pressure: <0.1%; Vibration: <1% |
| Position Transmitter (Opt.) | 4–20 mA, 12–30 VDC; Resolution 16-bit; Linearity <0.05% FS |
| Weight | 1.8 kg (ND7100); 3.4 kg (ND7200) |
| Approvals | ATEX, IECEx, INMETRO, cCSAus; Ex ia, Ex d, etc., up to SIL 2 |
Versatile for oil & gas, chemicals, pulp & paper, and water treatment industries. Ideal for throttling and on-off control in harsh conditions, supporting single/double-acting actuators on rotary/linear valves. Enhances process reliability in safety loops and distributed control systems.
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
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