The Masoneilan SVI3 is the third-generation digital valve positioner from Baker Hughes, designed for accurate and responsive control of single-acting pneumatic control valves. The specific configuration SVI3-21121212 belongs to this series and utilizes advanced control algorithms together with non-contact magnetic position sensing technology.
This digital valve controller receives a 4-20 mA setpoint signal and uses a non-contact Hall-effect magnetic sensor to measure valve position. It supports HART 7 communication for remote configuration and diagnostics. Key features include one-button SmartCal setup and calibration, optional local graphical LCD display with push-buttons suitable for hazardous areas, and advanced online valve diagnostics. The design offers reduced steady-state air consumption compared with conventional positioners while maintaining high air delivery capacity. It is suitable for both linear and rotary valves and is built for indoor or outdoor installation in industrial environments.
| Specification | Details |
|---|---|
| Model Series | SVI3 (3rd Generation) |
| Specific Configuration | SVI3-21121212 |
| Type | Digital HART valve positioner / controller |
| Input Signal | 4-20 mA (loop-powered) |
| Communication | HART 7 |
| Position Sensing | Non-contact magnetic (Hall Effect) |
| Linear Travel Capability | 0.25" to 8" (6.4 to 200 mm) |
| Rotary Travel Capability | 118° to 140° |
| Accuracy | ±0.5% full span (typical) |
| Hysteresis + Deadband | ±0.3% full span |
| Repeatability | ±0.3% full span |
| Operating Temperature | -55°C to +85°C (extended option); standard -40°C to +85°C |
| Supply Pressure | 1.4 to 8.3 bar (20 to 120 psi) |
| Air Delivery | 410 SLPM @ 30 psi |
| Pneumatic Action | Single-acting, fail-safe |
| Housing Protection | IP66 / NEMA 4X |
| Housing Material | Copper-free aluminum (optional 316SS) |
| Certifications | SIL3 capable; ATEX, IECEx, US, Canada hazardous area approvals |
Used in oil and gas, chemical processing, power generation, refining, and general process industries for precise positioning of single-acting pneumatic control valves in continuous and demanding service.
Users of older positioners often face lengthy commissioning times, higher air consumption, limited diagnostic insight, or sensor wear. The SVI3 addresses these through SmartCal one-button setup, lower steady-state air usage, non-contact sensing, and advanced online diagnostics with data storage capability.
Serves as a modern upgrade or replacement for earlier Masoneilan SVI series positioners (such as SVI II AP or SVi1000) and other single-acting digital or analog positioners requiring HART communication and enhanced diagnostics.
We supply genuine Masoneilan (Baker Hughes) digital valve controllers and offer practical support for correct configuration selection and process application matching.
Typical production and delivery time is 6-8 weeks.
Please provide details on valve type (linear or rotary), actuator specifications, required diagnostics level, display preference, hazardous area certification needs, and quantity for a customized quotation.
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