The Masoneilan SVI II AP (SVI2) is an advanced electro-pneumatic digital valve positioner that uses a two-wire 4-20 mA signal with HART communication. It features non-contact position sensing and a 32-bit microprocessor for precise, reliable control of both single- and double-acting pneumatic actuators on rotary and linear valves.
| Specification | Value |
|---|---|
| Communication | HART 5 or 7 over 4-20 mA |
| Action | Single or double acting, fail-safe |
| Supply Pressure | Single-acting 20–100 psi (1.4–6.9 bar); Double-acting 20–150 psi (1.4–10.3 bar) |
| Operating Temperature | -50°C to +85°C (-58°F to +185°F) |
| Housing | Copper-free aluminum (optional 316 stainless steel) |
| Enclosure Protection | NEMA 4X / IP66 |
| Travel Range | Linear 0.25" to 6" (standard); Rotary 18° to 140° |
| Certifications | ATEX, IECEx, FM, CSA for Explosion Proof, Intrinsically Safe, Flameproof |
| Diagnostics | Standard and advanced options with up to five pressure sensors |
Ideal for control valves in oil & gas, refining, petrochemical, power generation, and other process industries requiring accurate positioning, real-time diagnostics, and reliable performance in harsh environments.
Q: Does it support both linear and rotary valves?
A: Yes, it has a universal design for both linear and rotary actuators.
Q: What communication protocol does it use?
A: HART 5 or 7 over a standard 4-20 mA signal.
Q: Is it suitable for hazardous areas?
A: Yes, with multiple global certifications for explosion-proof and intrinsically safe installations.
Q: Can calibration be done locally?
A: Yes, with the optional local LCD and pushbuttons.
Q: What is the temperature range?
A: -50°C to +85°C, suitable for extreme conditions.
Consider the Masoneilan SVI3 for the latest generation or the 4700E series for simpler positioning needs.
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