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EOC offers heat flux sensors that are small, have a high sensitivity, can be easily integrated into the application setups, measure heat flux going into and out of the setup and have a quick response time (under one second). Furthermore, they can determine heat transfer coefficients.

Energy Harvesters – Fast and precise thermal measurements

The gSKIN® Heat Flux Sensor (Product Summary,  Selector) helps increase energy efficiency, improve material quality, or add decisive functionalities to your product. Heat flux sensing helps you better understand the thermal characteristics of your materials and processes.  The gSKIN® Heat Flux Sensor is applied in thermal measurement and control systems where precision and speed are of high importance.

Advantages of the gSKIN® Heat Flux Sensor:

  • Fast Response Time
  • Minimal Invasiveness
  • Easy to use
  • Customizable design
  • Robustness
  • High Sensitivity

The gSKIN® sensors are used in many applications including:

Core Body Temperature Measurement

The CORE System is a “Disruptive Technology:” 

  • Ideal for COVID-19 related symptoms monitoring
  • Easy to use & Reliable
  • CORE enables 24/7 Elevated Body Temperature monitoring
  • Highest accuracy on the market and in changing ambient conditions

gSKIN® Heat Flux sensors, small sensors with high sensitivity, are easily integrated into a variety of core body measurement applications. The gSKIN® Heat Flux sensors are non-invasive and provide a fast measurement of the core body temperature. Core body applications include monitoring athletic performance, medical applications and people exposed to high temperature environment (firefighters, etc.).

CORE 2 2005

General Heat Flux Measurement

Understanding the thermal environment is of great importance. For example, gSKIN® sensors can support you with understanding the thermal influences affecting the setup (e.g. heat deforming sample holders), or reviewing the thermal output of processes (e.g. heat output from a chemical reaction). Although in many applications temperature sensors are sufficient in establishing an accurate understanding of the thermal environment, in some cases a deeper insight into the thermal processes is required. Heat flux measurements can provide the needed data.

gSKIN® Application Notes:

Value Measurements with greenTEG’s U-Value Kit

Why Temperature Feels Different Depending on the Material

gO Measurement System

The gO Measurement-System is a cloud-based, wireless system for U-value, R-value, surface temperature, and humidity measurements. It allows for simultaneous measurements with up to 16 sensors and real-time remote monitoring. It is the only system on the market which gives you hard data about the insulation quality of building elements. The gO Measurement-System is especially designed for applications in building physics.


  • Easy to set-up and use
  • Real-time and remote monitoring via cloud
  • Simultaneous measurements with up to 16 sensor nodes

gO Measurement System for Robust and Weather-proof Cloud-based Measurement

gO Application Notes:

gO Measurement System

gO Measurement System U-Value Calculator

U-value Measurement/ Building Physics

In the field of building physics, U-value is the term used to describe the heat transfer coefficient of a building element (e.g. of a wall). The U-Value describes the insulation quality of a building. The unit is W/(m²K). The smaller the U-Value, the better the insulation quality of the building element. greenTEG’s measurement-approach uses a Heat Flux Sensor and two temperature sensors. This approach is standardized in ISO 9869, ASTM C1046 and ASTM C1155. This is the only method which delivers reliable quantitative in-situ information about a building envelope. Please find more details on greenTEG’s U-value website.

Battery calorimetry

Batteries produce heat during the charging and discharging phases. Knowing the amount of this heat is of great importance for battery safety, research, and control. That is why calorimetric measurements on batteries are common. However, standard battery calorimeters are expensive and the experiments are time consuming. With greenTEG’s Heat Flux Sensors, calorimetric measurements become affordable and feasible for any system and application.

Phase-Change-Materials (PCM)

Heat flux is important to measure for the understanding and optimization of PCMs and other thermal storage materials. Nowadays, PCMs are efficiently characterized through the powerful method of Differential Scanning Calorimetry (DSC). However, the characteristics of the PCM itself in the specific application can be different. For optimal integration, in the application the characteristics need to be known. With greenTEG’s Heat Flux Sensors, calorimetric measurements directly at the application become feasible.

Other Application areas

Other application areas are: Textile, Core Body Temperature, Precise Instrumentation, Solar Measurement, Calorimetry, Mass Flow, Fouling Detection.

gSKIN Heat Flux Sensors Literature Overview

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