ABB FAM541 Metal Tapered Variable Area Flowmeter

Product Overview

The ABB FAM541 is an industrial-grade metal tapered variable area flowmeter designed for measuring the flow of liquids, gases, and steam. Using a tapered metal tube and a float, the float position directly indicates the instantaneous flow rate. The flowmeter supports local visual reading or electronic remote output for automation system monitoring. It features a rugged construction suitable for high-pressure and high-temperature industrial processes.

Technical Specifications

• Model: FAM541

• Measurement Principle: Metal cone variable area / float

• Media: Clean liquids, gases, steam

• Flow Range: 0.028–120 m³/h (depending on size and calibration)

• Turndown Ratio: 10:1

• Connection: Flanged (DIN/ASME standard optional)

• Pressure Rating: Up to 100 bar (depending on flange rating)

• Operating Temperature: Up to 400 °C (depending on material and configuration)

• Accuracy Class: Class 1.6 (standard, higher accuracy optional)

• Body Material: Stainless steel (PTFE lining optional)

• Float Material: Stainless steel 316Ti (PTFE lining optional)

• Display: Direct scale reading; optional LCD or electronic 4–20 mA / HART output

• Optional Features: Remote transmission, NAMUR alarm switch output

Advantages and Features

1. Simple and Reliable Design
   Float directly indicates flow, no complex sensors, low maintenance.

2. High Pressure and Temperature Capability
   Metal tube withstands harsh process conditions.

3. Wide Range and High Accuracy
   Turndown ratio up to 10:1 ensures accurate measurements over a wide range.

4. Local and Remote Readout
   Supports direct reading and 4–20 mA/HART output for integration with automation systems.

5. Corrosion Resistant
   Stainless steel construction suitable for most process fluids.

Typical Applications

• Chemical and petrochemical processes

• Pharmaceutical, food, and beverage industries

• Boiler and steam systems

• Gas transportation and industrial gas measurement

• Water treatment and industrial water systems

Precautions

1. Install vertically with sufficient straight pipe above and below.

2. Ensure the fluid is clean; avoid large suspended particles in the measurement area.

3. Select calibration range according to medium properties, temperature, and pressure.

4. Ensure flange standard and pressure rating match the site conditions.

5. Minimize vibration; add support or damping if necessary.

The structure and details of the product：

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