HONEYWELL 0571-A-0302 Product Introduction
1. Product Overview
The HONEYWELL 0571-A-0302 is a high-precision industrial pressure transmitter engineered for reliable pressure measurement in process automation. As a key model in Honeywell’s 0571 Series of pressure sensors, it specializes in converting fluid or gas pressure into stable, industry-standard electrical signals—critical for monitoring and controlling processes in oil & gas, chemical processing, food & beverage, and pharmaceutical industries.
Designed to handle a wide range of pressure conditions (from low vacuum to moderate positive pressure), this transmitter ensures accurate data for applications like pipeline pressure monitoring, reactor pressure control, and tank level measurement (via hydrostatic pressure). It integrates advanced sensor technology, temperature compensation, and robust housing to deliver consistent performance in harsh industrial environments—including temperature fluctuations, vibration, and exposure to corrosive media. Its compliance with global process standards (e.g., IEC 61508) and safety certifications makes it suitable for both general and safety-related applications.
2. Technical Parameters (Table)
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Category
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Specification
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Device Type
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Industrial pressure transmitter (gauge, absolute, or differential pressure options)
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Pressure Range
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Gauge pressure: 0–300 psi (0–20.68 bar); Absolute pressure: 0–350 psi (0–24.13 bar); Differential pressure: 0–100 psi (0–6.89 bar)
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Measurement Accuracy
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±0.075% of full scale (FS) at 25°C (77°F); ±0.15% FS over operating temperature range
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Output Signals
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Analog: 4–20 mA DC (2-wire); Digital: HART 7.0 (for configuration & diagnostics)
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Temperature Range
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Operating temperature: -40°C to +85°C (-40°F to +185°F); Media temperature: -50°C to +125°C (-58°F to +257°F)
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Process Connection
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Standard: 1/2 NPT male (stainless steel 316L); Optional: M20×1.5, G 1/2 (customizable)
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Electrical Connection
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Standard: Terminal block (IP65); Optional: M12 connector, cable gland
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Power Supply
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12–42 V DC (2-wire loop power); Power consumption: ≤20 mA (max at 24 V DC)
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Environmental Ratings
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Protection class: IP65 (housing), NEMA 4X; Humidity: 5%–95% (non-condensing); Vibration resistance: 10 g (10–2000 Hz, IEC 60068-2-6); Shock resistance: 50 g (11 ms, IEC 60068-2-27)
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Certifications
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CE; UL 61010-1; ATEX Zone 2 (Ex nA IIC T4 Ga); IECEx; SIL 2 (IEC 61508); FDA 21 CFR Part 11 (for pharmaceutical/food apps)
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3. Product Specifications & Features
3.1 Core Specifications
The HONEYWELL 0571-A-0302 is built to deliver precise and stable pressure measurement for diverse industrial processes. Its flexible pressure range options—gauge (0–300 psi), absolute (0–350 psi), and differential (0–100 psi)—make it adaptable to scenarios like monitoring pipeline gauge pressure, tracking absolute pressure in closed reactors, or measuring differential pressure across filters. The ±0.075% FS accuracy at ambient temperature ensures minimal measurement error, while the ±0.15% FS accuracy over the full operating temperature range (-40°C to +85°C) eliminates drift caused by environmental temperature changes—critical for outdoor or high-temperature process applications.
In terms of signal compatibility, the 4–20 mA analog output integrates seamlessly with legacy DCS and PLC systems, while the HART 7.0 digital interface enables remote configuration (e.g., setting pressure units, calibration) and diagnostics (e.g., sensor health, temperature drift alerts). The stainless steel 316L process connection resists corrosion from aggressive media (e.g., chemicals, saltwater), making it suitable for oil & gas offshore platforms and chemical refineries. The IP65/NEMA 4X housing protects internal electronics from dust, water jets, and harsh weather, ensuring reliability in outdoor substations or washdown environments (e.g., food processing plants).
3.2 Key Features
- High Accuracy & Stability: Advanced piezoresistive sensor technology with temperature compensation ensures long-term stability (≤0.1% FS per year) and minimal drift, reducing the need for frequent recalibration. This accuracy is critical for processes requiring tight pressure control—such as pharmaceutical batch production, where pressure deviations can affect product quality.
- Dual Signal Output: The combination of 4–20 mA analog (for real-time process control) and HART 7.0 digital (for remote management) signals offers flexibility: analog ensures compatibility with older systems, while digital enables smart diagnostics and configuration without on-site visits—saving maintenance time and costs.
- Corrosion & Weather Resistance: Stainless steel 316L process connection and IP65/NEMA 4X housing withstand exposure to corrosive media (e.g., acids, seawater) and harsh weather (rain, dust, extreme temperatures). This durability extends the transmitter’s lifespan in demanding environments, reducing replacement frequency.
- Safety & Compliance: SIL 2 certification (IEC 61508) makes it suitable for safety-related applications (e.g., pressure monitoring in hazardous chemical reactors), while FDA 21 CFR Part 11 compliance ensures traceability and data integrity for pharmaceutical and food & beverage processes—critical for regulatory audits.
- Easy Installation & Maintenance: The compact design and standardized process/electrical connections simplify installation, while HART-based remote calibration eliminates the need to shut down processes for maintenance. The transmitter’s self-diagnostic function also flags potential issues (e.g., sensor degradation) early, enabling predictive maintenance and minimizing unplanned downtime.
4. Other HONEYWELL Pressure & Process Transmitters
Honeywell offers a range of complementary pressure transmitters and process measurement devices to the 0571-A-0302, covering diverse industrial needs:
- HONEYWELL 0571-B-0500: A higher-pressure variant of the 0571 Series, supporting gauge pressure up to 500 psi (34.47 bar) for heavy-duty oil & gas pipeline applications.
- HONEYWELL STG770: A smart pressure transmitter with multi-variable measurement (pressure + temperature), ideal for complex processes requiring simultaneous monitoring of multiple parameters (e.g., refinery distillation columns).
- HONEYWELL PX2 Series: A compact, low-cost pressure sensor for light-industry applications (e.g., HVAC, small pumps), offering basic 0–10 V DC output and IP67 protection.
- HONEYWELL DP8000: A differential pressure transmitter optimized for flow measurement (via orifice plates) and filter clog detection, with a wide differential range (0–5000 psi) and advanced diagnostics.
- HONEYWELL Safety Manager Pressure Transmitters (e.g., 0571-S-0200): SIL 3-certified variants of the 0571 Series, designed for safety instrumented systems (SIS) in high-risk applications (e.g., offshore oil well pressure control).
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