Description
Product Overview
The ABB EASYLINE EL3020 is a two-wire, loop-powered, digital pressure transmitter from ABB’s versatile and economical EASYLINE series. It is designed for continuous, precise measurement of gauge pressure (relative to atmospheric pressure) in a wide range of industrial applications. As a core component of ABB’s pressure instrumentation portfolio, the EL3020 transforms the physical pressure of liquids, gases, or steam into a standardized 4-20 mA electrical signal, which is simultaneously superimposed with a HART digital communication signal. This «smart» capability allows for remote configuration, diagnostics, and interrogation without interrupting the 4-20 mA control signal.
The core value of the EASYLINE EL3020 lies in its exceptional balance of accuracy, robustness, simplicity, and cost-effectiveness. It is engineered to deliver reliable performance in standard industrial environments with minimal installation and maintenance effort. Its compact, modular design, extensive range of process connections, and user-friendly local adjustment via the push-button interface (or a HART communicator) make it an ideal choice for a vast array of applications where precise and stable pressure measurement is required, from pump monitoring and filter control to tank level measurement and general process pressure indication. The «EASYLINE» name aptly reflects its design philosophy: making advanced pressure measurement straightforward and accessible.
Technical Specifications
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Parameter Name
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Parameter Value
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Product Model
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ABB EASYLINE EL3020
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Manufacturer
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ABB (ASEA Brown Boveri)
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Product Series
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EASYLINE (Economical, Smart Pressure Transmitter Series)
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Primary Function
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Gauge Pressure Transmitter (Two-wire, 4-20 mA with HART)
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Measurement Performance
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Measured Variable: Gauge pressure (relative to ambient atmospheric pressure).
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Accuracy: Typically ±0.1% of calibrated span (for certain ranges), with options for ±0.2% or ±0.5%, making it suitable for most process applications.
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Reference Accuracy: Up to ±0.075% of URL (Upper Range Limit) for high-performance variants.
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Turndown/Adjustable Range: Wide rangeability, often up to 100:1, allowing significant adjustment of the measurement span within the sensor limits.
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Long-Term Stability: Excellent, typically < ±0.1% of URL per year, reducing the need for frequent recalibration.Process & Electrical Interface
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Process Connection: Available in a wide variety of standard and hygienic connections, including G1/2″, 1/2″ NPT, M20x1.5, as well as flush diaphragms for viscous or clogging media. Materials include 316L stainless steel, Hastelloy, Monel, etc.
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Sensor Technology: Advanced silicon piezoresistive sensor, known for its high stability and resistance to shock and vibration.
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Output Signal: Two-wire, 4-20 mA DC, with HART 5/7 protocol digital communication superimposed. Loop-powered, requiring 10.5 to 45 V DC.
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Display (Optional): Integrated, backlit LCD display for local indication of pressure, percentage, and other variables. Configured via two front-facing pushbuttons.Environmental & Mechanical
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Process Temperature Range: -40 to 120°C (-40 to 248°F), dependent on the seal/diaphragm and flange type.
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Ambient Temperature Range: -40 to 85°C (-40 to 185°F)
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Pressure Limits: High overpressure capability, typically 2x to 4x the full scale. Burst pressure is even higher.
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Electrical Protection: IP66/IP67 ingress protection rating, suitable for outdoor and washdown areas.
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Safety Certifications: Compliant with international standards; options available for SIL 2/3 (IEC 61508) functional safety applications and ATEX/IECEx for hazardous areas (e.g., Ex ia IIC T6 Ga).
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Housing: Robust, compact, and lightweight design with a rotating head for easy viewing angle adjustment.
Key Features and Advantages
Smart Simplicity with HART: The EL3020 combines the simplicity and universality of a 4-20 mA signal with the powerful intelligence of HART. This allows for remote configuration, diagnostics, and verification using any standard HART communicator or host system, enabling predictive maintenance and reducing downtime without breaking the loop.
Exceptional Accuracy and Long-Term Stability: With accuracy as high as ±0.1% and industry-leading long-term stability, the EL3020 provides reliable and consistent measurements. This reduces process variability, improves product quality, and extends calibration intervals, lowering the total cost of ownership.
Robust and Flexible Design: Built to withstand harsh industrial environments (IP66/67), it offers a wide selection of process connections, diaphragm materials, and electrical connections. Its compact size and rotating housing simplify installation in confined spaces. Optional SIL 2/3 certification makes it suitable for safety instrumented systems (SIS).
Intuitive Local Operation: The optional local display and push-button interface allow for quick and easy configuration, zero and span adjustments, and unit changes on-site without any additional tools. The menu-driven interface is straightforward and user-friendly.
Application Areas
The ABB EASYLINE EL3020 is a versatile gauge pressure transmitter suitable for numerous applications across virtually all industries where reliable pressure measurement is needed.
Typical applications include:
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Process Industries (Chemical, Petrochemical, Oil & Gas): Measuring pump discharge pressure, filter differential pressure, pipeline pressure, and vessel pressure.
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Water and Wastewater: Monitoring pump pressure, filter clogging, and tank levels (via hydrostatic level measurement).
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Power Generation: Measuring feedwater pressure, fuel pressure, and general service pressures.
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HVAC and Building Automation: Chilled/heating water pressure, pump, and fan monitoring.
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Food and Beverage/Pharmaceutical (with hygienic connections): Monitoring pressure in tanks, pipes, and CIP (Clean-in-Place) systems.
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General Manufacturing: Hydraulic and pneumatic system pressure monitoring, machine tool pressure sensing.
Related Products
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Differential Pressure Transmitter: The ABB EASYLINE EL3310 for flow, level, and filter monitoring applications.
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Absolute Pressure Transmitter: The ABB EASYLINE EL3120 for measurements referenced to a perfect vacuum.
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Remote Diaphragm Seal Systems: Used with the EL3020 to isolate the transmitter from hot, viscous, corrosive, or clogging media.
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Mounting Bracket/Kits: For convenient installation on pipes or walls.
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HART Communicator/Software: Such as ABB’s Field Information Manager (FIM) or any generic handheld HART communicator for configuration and diagnostics.
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Pressure Gauge/Indicator: For local visual indication, often installed in parallel with the transmitter.
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