ASCO Solenoid Spool Valves and Masoneilan SVI II AP Svi2 Intelligent Digital Valve Positioner Controller
The Masoneilan SVI II AP (Smart Valve Interface, Advanced Performance) from is a high-performance digital valve positioner designed for precise control of pneumatic actuators in industrial processes. This 32-bit microprocessor-based device operates on a two-wire 4-20 mA loop with HART communication, offering bi-directional interaction for setup and diagnostics. Available in standard and high-flow variants (Cv up to 2.2), it supports single-acting actuators and features non-contact position feedback for enhanced reliability. Compliant with SIL 2 standards, it's field-upgradable and suitable for linear or rotary valves, ensuring optimized performance across various actuator sizes while often eliminating the need for additional boosters.
- High Flow Capacity: Cv 2.2 for rapid actuator response, reducing or eliminating boosters/quick exhausts; air delivery up to 102 scfm at 90 psi.
- Non-Contact Position Sensing: Field-proven sensor with no moving parts, SIL 2 compliant (IEC 61508), and resolution of 0.0015%.
- Advanced Diagnostics: Standard includes 5 pressure sensors, travel/cycle tracking; advanced adds offline signatures via ValVue Suite, online monitoring with Valve Aware.
- User Interface: Explosion-proof external LCD with buttons; setup wizard for quick commissioning; local/remote operation.
- Communication and Integration: HART Revision 6; supports eDDL, DTM, ValVue software; integrates with DCS/asset management systems.
- Rugged Design: Aluminum housing with grey polyurethane paint (ISO 12944-2 C4); IP66/NEMA 4X; -50°C to 85°C operating range.
- Options: Position retransmit (4-20 mA), limit switches, remote-mount sensor (up to 30m), field-upgradable firmware/diagnostics.
| Parameter | Details |
|---|---|
| Input Signal | 4-20 mA, 450 Ω resistance; min 3.2 mA; power from loop (9 VDC at 20 mA) |
| Pneumatics | Single-acting; supply 20-100 psi (1.4-6.9 bar); connections 1/2" NPT |
| Air Delivery (Single-Acting) | 39 scfm (30 psi), 70.6 scfm (60 psi), 102 scfm (90 psi) |
| Air Consumption | 0.28 scfm (30 psi), 0.35 scfm (45 psi) |
| Travel Range | Linear: 0.25-4" (standard), >4" (extended); Rotary: 18-140° |
| Performance | Accuracy ±0.5% FS; Linearity ±1.0% FS; Hysteresis/Deadband ±0.3% FS; Repeatability ±0.3% FS |
| Ambient Conditions | Temp: -50°C to 85°C; Humidity: 10-95% RH; EMC: EN 61000-4 standards |
| Enclosure | Aluminum ASTM 360; IP66/NEMA 4X; Explosion-proof (ATEX, FM, CSA, IEC) |
| Outputs (Optional) | Position: 4-20 mA (10-24 VDC); Switches: 1A, 30 VDC isolated solid-state |
Ideal for oil & gas, chemical, petrochemical, and power industries where precise valve positioning is critical. Used in surge-control, throttling, and safety applications with linear/rotary valves. Supports Masoneilan and non-Masoneilan actuators, enhancing process control in harsh environments with vibration, corrosion, or extreme temperatures.
- How does the high-flow option benefit large actuators? It provides higher air capacity (Cv 2.2), enabling faster response without additional boosters, reducing installation complexity.
- What diagnostics are available? Standard: pressure sensors, travel/cycles; Advanced: offline signatures, online health monitoring via ValVue or DTM.
- Is it compatible with existing systems? Yes, retrofits analog positioners; supports HART for DCS integration; universal mounting for linear/rotary.
- How to commission? Use the setup wizard via LCD/buttons or ValVue software; auto-calibration for position sensor.
- What hazardous area certifications does it have? ATEX, FM, CSA, IEC for intrinsic safety, explosion-proof, flame-proof, and nL.
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
- ValVue Suite: Software for diagnostics and configuration.
- SVI II AP-3: Advanced diagnostics version.
- Masoneilan Globe Valves: Compatible linear control valves.
- Remote Position Sensor Kit: For extended mounting up to 30m.
- Valve Aware: Online diagnostics tool.
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