Masoneilan SVI™ II AP Advanced Performance Digital Valve Positioner (HART)

Product Designation

Masoneilan SVI™ II AP Advanced Performance Digital Valve Controller (Electro-Pneumatic Positioner)

Core Communication Protocol

HART 7 (FSK over 4-20mA two-wire loop)

Input Control Signal

4–20 mA DC, two-wire loop-powered; configurable split-range operation

Input Resistance

300 Ω typical at 20 mA DC

Output Signal

Pneumatic output to actuator; HART digital communication over 4-20mA loop

Applicable Actuators

Masoneilan pneumatic single-acting & double-acting, linear and rotary motion actuators; compliant with IEC 534 / VDI/VDE 3845 standards

Positioning Accuracy

±0.25% of Full Scale (F.S.)

Repeatability

±0.1% of Full Scale (F.S.)

Hysteresis

≤0.1% of Full Scale (F.S.)

Configurable Flow Characteristics

Linear, Equal Percentage (EQ%), Quick Opening, 20-point custom user-defined characteristics

Supply Air Pressure Range

140 kPa to 700 kPa (1.4 bar to 7 bar / 20 psi to 100 psi)

Steady-State Air Consumption

≤0.15 Nm³/h (9 scfh) at 140 kPa supply pressure

Maximum Air Delivery Flowrate

110 L/min (N) max at 140 kPa for single-acting actuators; 250 L/min (N) max at 400 kPa for double-acting actuators

Air Connections

1/4 NPT internal thread (standard); optional Rc1/4

Electrical Connections

1/2 NPT internal thread (standard); optional M20×1.5, G1/2

Enclosure Protection Rating

IP66 / IP67, NEMA Type 4X

Ambient Temperature Range

Standard: -40 °C to +85 °C; Optional low-temperature: -55 °C to +85 °C

Ambient Humidity Range

5% to 95% RH (non-condensing)

Explosion Protection Rating

Standard: Intrinsic Safety (Ex ia IIC T4/T5/T6 Ga); Optional: Flameproof (Ex d IIC T4/T5/T6 Gb), Non-incendive (Ex nA IIC T4/T5/T6 Gc)

Core Control & Diagnostic Functions

Auto-calibration, adaptive control parameter self-tuning, advanced valve health diagnostics, local backlit LCD operation panel, bidirectional position measurement, selectable fail-safe (open/close) / fail-freeze function, gearless non-contact sensor activation for high shock & vibration immunity, Partial Stroke Test (PST) capability, valve signature analysis, cycle counting, travel histogram, stick-slip detection

Configuration Tools

HART Communicator (Model 375/475), Masoneilan ValveSight™ Software

Key Global Approvals & Certifications

CE, ATEX, IECEx, FM, CSA, CCC, CRN, HART Certified

Typical Applications

General industrial process control, water & wastewater treatment, thermal power plants, standard chemical processes, oil & gas midstream/downstream, food & beverage, pharmaceutical industry, high-precision process control applications