AAV144-S50 | Yokogawa | HART Analog Input Pressure Transmitter Module

Product Overview

The Yokogawa AAV144-S50 integrates precision pressure sensing with advanced HART communication protocols to deliver critical process data in demanding industrial environments. This 2-wire transmitter converts mechanical pressure into a stable 4-20mA signal, allowing operators to monitor system integrity in real-time. We provide this unit as a 100% Brand New and Original factory-sealed product, guaranteeing compliance with strict engineering standards.

Part Number Breakdown: AAV144-S50

The Yokogawa AAV144 series follows a specific configuration logic to match specialized field requirements:

Technical Specifications

The AAV144-S50 utilizes high-grade metallurgy and electronics to maintain signal fidelity:

• Measuring Range: Selectable from 0-0.5 MPa up to 0-50 MPa

• Output Signal: 4-20mA + HART (2-wire loop powered)

• Accuracy: ±0.1% FS (includes linearity, hysteresis, and repeatability)

• Wetted Materials: Hastelloy C276 Diaphragm / SUS316L Body

• Process Connection: 1/2" NPT male or DIN 16288 flange

• Operating Voltage: 10.5 to 42V DC

• Protection Rating: IP67 / NEMA 4X

• Temperature Limits: Process: -40°C to 120°C | Ambient: -30°C to 80°C

Engineering Advantages

The AAV144-S50 solves common site-specific challenges through robust hardware design:

• Corrosion Resistance: The Hastelloy C276 diaphragm resists aggressive chemical media and sour gas environments, preventing diaphragm rupture and premature sensor failure in volatile process loops.

• Environmental Sealing: The IP67-rated housing protects internal electronics from high-pressure water jets and dust ingress. This ensures long-term deployment in outdoor installations or wash-down areas without signal drift.

• HART Intelligence: The digital HART overlay allows engineers to perform remote calibration and diagnostics. This feature eliminates the need for technicians to access hazardous or cramped locations for routine maintenance.

• Wide Thermal Range: The module operates consistently up to 120°C process temperature. This capability handles steam or high-heat fluid applications without requiring external cooling siphons in many configurations.

FAQs

• Can the AAV144-S50 operate in hazardous areas?

  The IP67/NEMA 4X rating provides excellent environmental protection. However, you must verify the specific explosion-proof (Ex) or intrinsically safe (IS) certifications on the nameplate if installing in Class I, Div 1 zones.

• How do I adjust the measuring range?

  You can re-range the device via a HART communicator or Yokogawa’s FieldMate software. The internal electronics allow you to scale the 0-0.5MPa to 0-50MPa span to fit your specific process window.

• What is the advantage of the 2-wire loop-powered design?

  This design simplifies installation by carrying both power and the 4-20mA signal over a single pair of wires. It reduces wiring costs and minimizes the complexity of the cable infrastructure.

• Does the ±0.1% accuracy include long-term drift?

  The ±0.1% FS specification covers linearity and hysteresis at the time of calibration. While the AAV144 series exhibits excellent stability, we recommend annual verification to account for extreme process-induced drift.