HOENYWELL SDW-550-EC

Description

Product Description

The Honeywell SDW-550-EC is a highly reliable and robust differential pressure transmitter from Honeywell’s industrial measurement portfolio. Designed for demanding process applications, this transmitter accurately measures differential pressure, which can be used to infer critical process variables such as flow, level, and filter condition. The transmitter features a welded, all-stainless steel sensor body and electronics housing, making the SDW-550-EC suitable for harsh environments, including those with corrosive media or requiring frequent washdowns. As a core sensing component, the Honeywell SDW-550-EC provides essential feedback for process control, safety interlocking, and efficiency monitoring in continuous industrial operations.

Technical Parameters

• Device Type: Differential Pressure (DP) Transmitter.
• Manufacturer: Honeywell.
• Product Series: Part of the SmartLine or ST 3000 portfolio (specific legacy series).
• Measurement Range: Available in various spans, typically from a low range (e.g., 0-5 inH2O) to high ranges (e.g., 0-1000 psi).
• Output Signal: Standard 4-20 mA DC analog output, superimposed with HART® digital communication protocol.
• Accuracy: High accuracy, typically ±0.075% to ±0.1% of calibrated span.
• Sensor Technology: Based on proven capacitive sensing technology for stability and reliability.
• Process Connections: 1/4″ NPT or 1/2″ NPT female, or flanged connections. Materials include 316L stainless steel.
• Electrical Connection: 1/2″ NPT conduit connection with a terminal block for wiring.
• Display: Optional local indicator (LCD) for on-site readout of pressure, percentage, and diagnostic messages.
• Environmental Rating: High ingress protection (e.g., NEMA 4X / IP66), suitable for outdoor installation.
• Compliance: Compliant with major international standards for safety and EMC.

Advantages and Features

• Proven Durability and Reliability: The welded stainless steel construction of the SDW-550-EC ensures exceptional resistance to corrosion, vibration, and moisture, leading to long service life and reduced maintenance costs.
• High Accuracy and Stability: Leveraging Honeywell’s advanced capacitive sensor technology, this transmitter provides precise and repeatable measurements with minimal drift over time, essential for tight control and accurate billing.
• Smart Diagnostics with HART: The integrated HART protocol allows for remote configuration, calibration, and access to extensive diagnostic information from the Honeywell SDW-550-EC, facilitating predictive maintenance and reducing downtime.
• Easy Installation and Commissioning: A wide range of mounting options, clear process connections, and user-friendly configuration via a HART communicator or control system software simplify setup.
• Versatile Application Fit: Designed to handle a broad spectrum of liquids, gases, and steam, making the SDW-550-EC a versatile choice for flow, level, and DP applications across multiple industries.

Application Cases in Various Fields

• Oil & Gas Production: Flow measurement of natural gas, crude oil, or produced water using orifice plates.
• Chemical Processing: Level measurement in pressurized or closed tanks, reactor pressure drop monitoring.
• Power Generation: Feedwater flow measurement, filter differential pressure monitoring across air intake filters or oil filters.
• Water & Wastewater Treatment: Pump protection, level measurement in wet wells, and flow measurement in treatment streams.
• Pharmaceutical & Food & Beverage: Hygienic flow and level applications where cleanability and material compatibility are critical.

Comparison with Competing Products

Compared to differential pressure transmitters from competitors like Emerson (Rosemount), Yokogawa, or Endress+Hauser, the Honeywell SDW-550-EC holds its ground with:

• Robustness Focus: Its all-welded, stainless steel design is often highlighted for superior physical robustness in very harsh or corrosive environments compared to some modular designs.
• Legacy System Integration: For plants with existing Honeywell control systems (Experion, TDC), the SDW-550-EC offers seamless integration and familiar configuration tools.
• Value Proposition: It often represents a strong balance between high-end performance (accuracy, stability) and competitive pricing, especially in standard process applications.

Selection Suggestions and Precautions

1. Define Process Conditions Precisely: Select the appropriate range, process connection material, and seal type based on the media (corrosive, viscous, clean), operating pressure, and temperature.
2. Consider the Process Environment: The SDW-550-EC is well-suited for harsh locations, but ensure its environmental rating (IP66/NEMA 4X) meets the specific area classification for moisture, dust, and hazardous gases.
3. Proper Impulse Line Installation: For flow or level applications, correct installation of impulse lines (sloping, venting, filling) is critical. Avoid trapping gas in liquid lines or liquid in gas lines to prevent measurement errors.
4. Utilize HART Capabilities: Plan for HART communication for easier commissioning, loop verification, and remote diagnostics. Ensure your maintenance team has HART communicators or software access.
5. Implement Overpressure Protection: Ensure the transmitter’s maximum working pressure rating is not exceeded. Use isolator valves or seal pots where necessary to protect the Honeywell SDW-550-EC sensor from process overpressure or water hammer events.

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