Endress+Hauser FTL31-AA4U3AAWBJ Level Transmitter Guided Wave Radar GWR

The Endress+Hauser FTL31-AA4U3AAWBJ is a high-performance, two-wire guided wave radar (GWR) transmitter for continuous level measurement of liquids. Part of the robust FTL31 series, this specific model excels in demanding industrial applications where reliability, accuracy, and minimal maintenance are critical. It is engineered to deliver precise measurement data even in the presence of foam, turbulence, vapor, or changing product properties.

Core Features & Benefits

Exceptional Reliability: Proven guided wave radar technology ensures stable and dependable measurements, reducing downtime and maintenance costs.

High Accuracy: Delivers precise level data with high resolution, essential for process optimization and inventory management.

Robust in Challenging Conditions: Performs reliably in the presence of foam, buildup, agitators, low dielectric media, and high-pressure/vacuum environments. The AA4U3AAWBJ variant features a 316L stainless steel process connection and probe for excellent corrosion resistance.

Easy Installation & Commissioning: Simple setup via local push buttons or using the Endress+Hauser SmartBlue app. Intuitive menu guidance simplifies configuration.

Versatile Output & Communication: Standard 4…20 mA HART® 7 output allows for easy integration into existing control systems. Offers advanced diagnostics and device information via HART.

Safety & Certifications: Typically holds important international approvals for use in hazardous areas (e.g., ATEX, IECEx) and industrial safety (SIL2/3 according to IEC 61508). Note: Always verify current certifications for the specific device.

Technical Specifications (Key Highlights for AA4U3AAWBJ)

Measurement Principle: Guided Wave Radar (TDR - Time Domain Reflectometry)

Process Connection: Flange DN50 PN16/40 (ANSI 2" 150lb), material 316L stainless steel.

Probe Type: Single-rod probe, 316L stainless steel. Length is model-specific (specified by customer order).

Measuring Range: Up to 6 meters (dependent on probe length).

Process Temperature: -196 to +400 °C (-321 to +752 °F)

Process Pressure: Up to 400 bar (5800 psi) at 20°C.

Accuracy: Typically ± 1 mm.

Electrical Connection: 1/2-14 NPT conduit entry.

Output: Two-wire 4…20 mA with HART® 7.

Display: Integrated, clear LCD for local readout and configuration.

Typical Applications

The FTL31-AA4U3AAWBJ is ideal for continuous level measurement in:

Chemical and Petrochemical Industries

Oil & Gas (including offshore platforms)

Refineries

Pharmaceutical and Biotechnology

Power Generation

Water and Wastewater Treatment

Applications involving aggressive liquids, high pressure/temperature, or requiring hygienic design with its rod probe.

Why Choose Endress+Hauser FTL31?

Endress+Hauser is a global leader in level measurement. The FTL31 series represents over 60 years of radar expertise, offering:

Future-Proof Technology: HART 7 ensures long-term compatibility and advanced digital capabilities.

Global Support: Worldwide service network for calibration, support, and training.

Comprehensive Instrumentation Portfolio: Seamless integration with other Endress+Hauser field devices for a complete process solution.

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