Fluidwell C581 Flow & Energy Computer

The C581 is the latest innovation in the Fluidwell C5-Series of Flow & Energy Computers – a powerful, accurate, and user-friendly solution for single-stream flow applications. Designed for demanding environments, the C581 offers robust performance across a wide range of flow measurement and energy monitoring scenarios, making it an ideal choice for applications involving coolants, water, and saturated or superheated steam.

Key Features

• High-Precision Measurement

  Accurately measures flow, temperature, and pressure with advanced IAPWS-based calculations for density, enthalpy, energy, mass, and volumetric flow.

  • 11-point linearization ensures superior accuracy across the entire flow range.

  • Supports up to 3 stacked differential pressure (dP) sensors to enhance low-flow accuracy.

• Broad Application Range

  Compatible with ISO 5167 flow elements including orifice plates, venturis, and cone meters. Suitable for heat exchangers, boilers, condensers, and cooling systems.

  • Versatile flow inputs: differential pressure, 4–20 mA, with pulse input available in upcoming models.

  • Calculates totalized volume, mass, and energy.

• Rugged Field Enclosure

  Housed in a robust IP66/67, Type 4X aluminum enclosure, the C581 is built to perform in harsh industrial and outdoor environments.

  • Operating temperature: –40°C to +70°C.

  • Ideal for challenging installations where durability is essential.

• User-Friendly Interface

  Features a large, graphical display with customisable line views and an adjustable backlight.

  • Easy navigation with 6 industrial-grade silicone buttons or free configuration software.

  • Designed for fast setup and intuitive operation.

• Extensive Data Logging

  Equipped with an 8GB memory for comprehensive data logging, storing both measured and calculated values for full traceability and analysis.

Technical Highlights

• Two Pt100 / Pt500 inputs for temperature with Callendar–Van Dusen accuracy.

• 4–20 mA inputs for pressure and temperature sensors.

• Outputs: 2 x analog, 2 x digital, 2 x relay.

• Communication: RS485, RS232, USB.

• Optional pulse input via the upcoming C581-P model.

All datasheets below in specification

We’ve got a great new Fluidwell configurator tool to help making your decision that much easier. Why not head over to the Guides and Tools section of the site and take a look now!