Key Benefits and Advantages
Unrivaled Enclosure Versatility: The SIPART PS2 offers more housing materials than almost any other positioner on the market, allowing it to be deployed in any environment:
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Polycarbonate: Impact-resistant and economical for general industrial use.
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Aluminum: Rugged protection for chemical and mechanical stress.
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Stainless Steel: Maximum corrosion resistance for food, pharma, and coastal areas.
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Flameproof (Ex d): Available in Aluminum or 316L Stainless Steel for the most volatile hazardous zones.
Low Air Consumption & High Efficiency: The PS2 utilizes a unique piezoelectric pilot valve technology. Unlike traditional spool valves, the piezo-precontrol only consumes air when it is moving. This results in significant energy savings and can often pay for the instrument itself through reduced compressed air costs over its lifetime.
Advanced Predictive Diagnostics: The PS2 does more than just position the valve; it monitors the entire health of the valve assembly. It features integrated functions such as:
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Full Stroke Test (FST): Verifies the valve can move through its full range.
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Partial Stroke Test (PST): Tests safety valves without shutting down the process.
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Leakage Detection: Monitors for pneumatic leaks in the actuator or tubing.
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Valve Performance Trending: Tracks friction and seat wear over time.
Comprehensive Communication: To ensure compatibility with any control system architecture, the PS2 supports all major industrial protocols:
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HART (4 to 20 mA)
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PROFIBUS PA
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FOUNDATION Fieldbus
Simplified Commissioning: Using the local display and three push-buttons, the PS2 can be initialized automatically in minutes. The device self-calibrates by detecting the end stops and automatically calculating the optimal PID control parameters for the specific volume of the actuator.
Technical Properties
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Operation: Digital-to-pneumatic for linear and rotary actuators.
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Actuator Type: Single-acting or Double-acting.
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Input Signal: 4 to 20 mA, HART, PROFIBUS PA, or FF.
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Sensing Technology: High-resolution potentiometer or non-contacting (NCS) sensor for high-vibration applications.
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Protection Class: IP66 / NEMA 4X.
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Safety Integrity: Suitable for use in SIL 2 (and SIL 3 in redundant configurations) safety loops.
Field of Application
The SIPART PS2 is the all-round solution for every major process industry.
Primary Industries and Uses:
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Oil & Gas: Critical control on offshore platforms and in refineries.
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Chemical/Petrochemical: Handling corrosive fluids in hazardous zones.
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Power Generation: Precise modulation of steam and cooling water.
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Water & Wastewater: Reliable operation in humid and outdoor pump stations.
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Food & Beverage: Stainless steel versions for hygienic and wash-down areas.
