Rosemount 8800 DF040 Vortex Flowmeter

Product Description
The Rosemount 8800 DF040 Vortex Flowmeter is a high-performance, flanged vortex flowmeter designed for precise measurement of liquids, gases, and steam in industrial applications. This 4-inch (DN100) ASME Class 150 model features a welded, gasket-free meter body that eliminates potential leak paths and reduces maintenance requirements. Equipped with an isolated sensor and advanced signal processing, the 8800 DF040 delivers stable, accurate, and reliable flow measurements even in applications with high vibration. Its HART® 4-20 mA communication interface ensures seamless integration with modern process control systems.

Technical Specifications

General

• Model: Rosemount 8800 DF040

• Meter Type: Flanged Vortex Flowmeter

• Nominal Line Size: 4 in (DN 100)

• Flange Rating: ANSI Class 150

• Flow Medium: Liquids, Gases, or Steam

• Output Signal: 4–20 mA with HART® Protocol

Performance

• Flow Accuracy:

  • ±0.65% of reading for liquids

  • ±1.0% of reading for gas and steam

• Repeatability: ±0.2% of rate

• Turndown Ratio: Up to 38:1

• Response Time: < 1 second

Mechanical Construction

• Body Design: All-welded, gasket-free construction

• Sensor Design: Isolated vortex sensor allows replacement without breaking process seal

• Wetted Materials: Stainless Steel 316/316L (standard); other alloys available on request

• Flange Material: Carbon Steel or Stainless Steel

• Process Connection: Flanged, ASME B16.5

Operating Conditions

• Process Pressure: Up to 285 psi (ANSI 150 rating)

• Process Temperature Range: –200 °C to +427 °C (–330 °F to +800 °F), depending on configuration

• Ambient Temperature Range: –40 °C to +85 °C (–40 °F to +185 °F)

Electrical and Communication

• Output: 4–20 mA analog with digital HART® communication (HART 5 or 7)

• Optional Outputs: Scalable pulse or FOUNDATION™ Fieldbus / Modbus RS-485

• Power Supply: 12–42.4 VDC (nominal 24 VDC)

Measurement and Diagnostics

• Signal Processing: Adaptive Digital Signal Processing (ADSP) for vibration immunity

• Diagnostics: Continuous sensor health monitoring and flow verification diagnostics

• Compensation Options: Multivariable configuration for temperature and/or pressure compensation (mass flow output for steam and gases)

Installation and Maintenance

• Mounting Orientation: Horizontal or vertical pipeline installation

• Maintenance: Sensor can be replaced inline without process shutdown

• Calibration: Factory-calibrated and traceable to international standards

Certifications and Safety

• Ingress Protection: IP66 / IP68

• Hazardous Area Approvals: ATEX, IECEx, CSA, and FM available

• Functional Safety: SIL 3 certified for Safety Instrumented Systems (SIS)

Key Features

• Gasket-free, welded body eliminates leak points and clogging

• High accuracy and repeatability across a wide flow range

• Excellent vibration immunity through advanced signal processing

• HART® digital communication for advanced diagnostics and configuration

• Minimal maintenance and long-term reliability in harsh process conditions

• Suitable for custody transfer and critical control applications