ASCO Solenoid Spool Valves Me-tso Valmet Neles ND7000 Series Control Valve Positioner Smart Digital Valve Controller

Valmet's Neles ND7000 is a microcontroller-based digital valve controller for precise pneumatic actuator positioning via 4-20 mA HART signals. It measures input signal, position (contactless), pressures (supply/actuator/spool), and temperature for optimal control. SIL 2 certified, it supports rotary/linear valves with low air consumption and IP66 protection, making it suitable for demanding environments. Firmware enables basic diagnostics like trends and counters, with easy upgrades for advanced features.

• Control Mechanism: 32-bit μC with LUI for automatic/manual calibration; 1-point for minimal disruption.
• Pneumatics: Spool valves (2/3/6) for capacities 5.5-38 Nm³/h; consumption <1.0 Nm³/h steady-state.
• Diagnostics: Self-checks, deviation trends; off-line tests for valve integrity.
• Safety Compliance: IEC 61508 SIL 2; fail-safe open/close; explosion-proof options.
• Integration: HART for DTM/EDD; multilingual LUI; remote mounting with external sensors.
• Environmental Robustness: -40°C to +85°C; vibration <1% effect; humidity-resistant.
• Options: Position transmitter (4-20 mA); arctic version (-53°C); filter regulators.

Optimized for process industries requiring high reliability, such as petrochemicals and power generation. Used in throttling/on-off services for flow regulation in dirty air or extreme temperatures.

• What supply pressure is required? 1.4–8 bar; minimal effect on position.
• How to calibrate? Automatic via LUI; manual linearization or 1-point for quick mounting.
• What approvals for Ex areas? ATEX Ex ia IIC T4 Ga; IECEx Ex tb IIIC T90°C Db.
• Air consumption in steady state? <0.6 Nm³/h for spool 2/3.
• Compatible with fieldbus? HART only; for FF/Profibus, see ND9000.

Phone/WeChat/WhatsApp: +8613916209596

Email: svetama@gbsxj.com

• Neles ND7100/7200: Enclosure variants.
• Remote Sensors: For separated mounting (RR01/RR02).
• Cable Assemblies: For remote (RC01-RC03).
• Driver Sets: For rotary actuators (DS01-DS04).
• Conduit Nipples: For hazardous areas (CE07-CE09).