Key Benefits and Advantages
Flameproof Protection (Ex d): The TZIDC-220 is housed in a heavy-duty, explosion-proof enclosure. This robust casing is designed to contain any internal electrical spark or explosion, preventing it from igniting the surrounding flammable gases or vapors. It is the go-to solution for refineries, chemical plants, and gas processing facilities that require an “Ex d” rating.
Native FOUNDATION Fieldbus Integration: As a true fieldbus device, the TZIDC-220 supports the “Control in the Field” philosophy. It can host various function blocks (such as Analog Output and PID), allowing the positioner to execute control logic locally. This reduces the processing load on the central DCS and ensures faster, more reliable loop performance.
Automated Commissioning and Self-Optimization: The instrument features a fully automatic determination of control parameters. During initial setup, the “Autostroke” routine scans the mechanical limits of the actuator and valve, automatically adjusting the internal PID settings to account for friction, deadband, and load. This results in an optimal control characteristic and significant time savings during commissioning.
Superior Vibration Resistance: A hallmark of the TZIDC family, the 220 model offers unmatched immunity to mechanical stress, withstanding vibrations of up to 10g at frequencies up to 80 Hz. This guarantees stable digital communication and precise mechanical positioning even when mounted on high-vibration equipment like compressors or large-scale pumps.
Modular and Compact Design: Despite its rugged, flameproof exterior, the TZIDC-220 maintains a compact footprint that fits easily on smaller actuators. Its modular internal construction allows for the addition of optional modules, such as a failsafe shutdown module or digital limit switches, providing a flexible and cost-effective solution for diverse plant needs.
Efficient Pneumatic Performance: The device utilizes a high-gain pneumatic relay with extremely low steady-state air consumption. This high-efficiency design minimizes the continuous demand on the plant’s instrument air system while maintaining the high-flow capacity required for rapid and responsive valve travel.
Technical Properties
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Operation: Digital-to-pneumatic valve positioner.
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Communication: FOUNDATION Fieldbus (H1).
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Protection Class: Flameproof / Explosion-proof (Ex d).
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Vibration Immunity: 10g up to 80 Hz.
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Actuator Compatibility: Linear (sliding-stem) and Rotary (quarter-turn).
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Power Supply: Bus-powered (9 to 32 V DC).
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Housing: IP65 / NEMA 4X (Aluminum standard).
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Operating Temperature: -40 to 85°C.
Field of Application
The TZIDC-220 is the premier choice for large-scale digital plants that require FOUNDATION Fieldbus communication in hazardous zones.
Primary Industries and Uses:
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Oil & Gas Refining: Reliable control for distillation columns and hydrocarbon processing.
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Petrochemical Production: Managing reactor control valves in explosive zones.
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Offshore Platforms: Safe and stable positioning for gas compression and treatment modules.
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Chemical Manufacturing: Accurate flow regulation in areas with flammable chemical vapors.
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Pharmaceutical: Automated and safe valve control in hazardous manufacturing suites.
