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  1. Detection - Measurement
  2. Flow, Pressure and Level Measurements
  3. Thermal flow sensor
  4. OMRON

Thermal flow sensor E8FC series
volumefor liquidsfor cooling systems

Thermal flow sensor - E8FC series - OMRON - volume / for liquids / for cooling systems
Thermal flow sensor - E8FC series - OMRON - volume / for liquids / for cooling systems
Thermal flow sensor - E8FC series - OMRON - volume / for liquids / for cooling systems - image - 2
Thermal flow sensor - E8FC series - OMRON - volume / for liquids / for cooling systems - image - 3
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Characteristics

Technology
thermal
Type
volume
Applications
for liquids, for process monitoring, for cooling systems
Other characteristics
compact, analog output, digital output, smart, with temperature measurement, with IO-Link interface

Description

Overview
  • IoT flow sensors that detect early signs of abnormalities in cooling water, water‑soluble coolant and water‑insoluble oil by simultaneous measurement of flow rate and temperature at the same position.


Key concept
  • Monitor combined flow rate + temperature at a single point to detect cooling performance degradation before defects or unexpected stops occur.
  • Multi-sensing display indicates likely causes by combining Flow+Temperature and Pressure+Temperature information.


Applications — Welding machine
Problems
  • Rising cooling-water temperature reduces cooling of welding tips or transformers, causing overheating, deformation, welding defects and sudden equipment stops.
  • Flow-only monitoring cannot detect a temperature rise.


Solution
  • Simultaneous measurement of flow and temperature enables early detection of signs before welding tip deformation or sudden stops occur.


Applications — Molding machine
Problems
  • Even with adequate flow volume, increased water temperature lowers cooling performance, causing deformation, voids or other molding defects.
  • Flow-only monitoring cannot detect the temperature rise.


Solution
  • Measure flow and temperature at the same position, quantify optimum ranges and detect cooling degradation without relying on operator experience.
  • Multiple sensors with LED indicators allow rapid identification of the affected pipe and anomaly type.


Applications — Carburizing furnace
Problems
  • Stricter part-strength requirements demand stable cooling performance where both flow and temperature must be controlled.
  • Installing separate thermometers increases plumbing costs.


Solution
  • Simultaneous monitoring of cooling-water temperature and flow preserves ideal cooling performance, ensuring consistent finish and part strength.


Main features
  • Multi-sensing technology: thermal flow algorithm computes flow velocity by measuring cooling of a heated element (Ta); flow rate is derived from pipe diameter.
  • Direct temperature measurement: temperature element (Tb) measures fluid temperature.
  • Multi-sensing display (patent pending): evaluates combined values; display colors configurable in 3 patterns (+ off).
  • Relative-value display: shows change rate as a percentage relative to the set flow (Smart Tuning for variable environments and liquids).
  • Unit display: converts and shows physical quantity units.
  • Scaling: adjust detected flow values to reference flow rates.
  • High-luminosity LED for visibility in dark locations and behind equipment.
  • Angle adjustment up to 330° and 180° reverse display for flexible mounting and viewing.
  • Peak/Bottom Hold: captures values at the moment an error occurs for off-site analysis.
  • NPN/PNP selection: switchable output polarity to simplify spare-part inventory.
  • Two-channel analog current output: simultaneous flow/pressure and temperature outputs for systems with only analog inputs.
  • Self-diagnostic outputs: sensor detects and signals connection errors or malfunctions.
  • Batch setting via IO-Link: perform batch configuration from a host to maintain consistent settings across maintenance.
  • Visualization support: data collection and remote monitoring with Visualization Software F-Scape without complex system integration.
  • Compact design for narrow-space mounting; expanded cable and adapter lineup available (sold separately).
  • Removable structure for easy cleaning and periodic inspection.
  • Durable liquid-contact components designed for long service life in liquid environments.


Technical specifications
  • Product family / series: E8FC
  • Product type: IoT Flow Sensor (simultaneous flow and temperature measurement)
  • Measurement method: Thermal flow algorithm (flow velocity from cooling of element Ta; flow rate derived from pipe diameter)
  • Temperature element: Tb (direct fluid temperature measurement)
  • Outputs: IO-Link communication, two-channel analog current outputs (flow/pressure and temperature), selectable NPN/PNP digital output
  • Display: Multi-sensing LED with 3 color patterns (+ off), relative-value (%) display, unit conversion
  • Functions: Smart Tuning, Scaling (reference flow adjustment), Peak/Bottom Hold, Self-diagnostic outputs, Batch setting via IO-Link
  • Mounting: Angle adjustment up to 330°, 180° reverse display, compact for narrow spaces
  • Maintenance: Removable easy-to-clean structure
  • Accessories: Expanded cable and adapter lineup available (sold separately); use a throttle if pulsation/vibration occurs
  • Visualization compatibility: F-Scape visualization software
  • Last update of source content: August 1, 2022

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