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Heat Flow Sensor Product List

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[New Product] General-purpose Heat Flow Sensor Series L33A M55A S11A

[New Product] General-purpose Heat Flow Sensor Series L33A M55A S11A

Heat flow measurement is possible even with a temperature difference of less than 0.001℃! For evaluating insulation performance and for insulation control associated with heat quantity measurement!

The heat flow sensor is a mechanism that measures the temperature difference occurring on both sides of a plate-shaped thermal resistance placed across the flow of heat. It measures the conductive heat that travels in a direction perpendicular to the surface inside the sensor. In the general-purpose heat flow sensor series, to avoid affecting the original heat flow, a thermopile is constructed by connecting numerous thermocouples in series on both sides of a thin plastic plate, allowing for heat flow measurement even when the temperature difference between the front and back is less than 0.001°C. Using a heat flow sensor enables more accurate measurements compared to traditional methods that determine heat flow values from the thermal conductivity of materials and temperature differences. It can be widely used as a standard sensor for measuring the distribution and total amount of heat transfer in structures such as experimental buildings, residences, and commercial buildings, as well as for the quantitative evaluation of thermal insulation performance in equipment and facilities for heat retention and cooling. For more details, please contact us or download the catalog.

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Heat flow sensor

Heat flow sensor

A thermal flow sensor made of topological materials that can measure heat flow that was previously invisible.

We are developing thermal flow sensors using topological materials. Topological materials possess unique electronic structures that have not been seen in conventional materials, enabling device characteristics that respond quickly and sensitively to heat. Additionally, we are developing demo thermal flux sensors for joint research and development, which can be loaned to companies considering collaborative development. We can also conduct measurement tests in environments provided by companies, supporting the consideration of specific joint development projects. 【Applications】 ■ Fail-safe for batteries, etc. ■ Gas sensors ■ Monitoring in factories/production/insulation ■ Internal temperature measurement *For more details, please download the PDF or feel free to contact us.

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Attacking thermal design! An explanation of thermal flux by Toyota.

Attacking thermal design! An explanation of thermal flux by Toyota.

Current Toyota Motor Corporation engineers respond: What can be done by measuring 'heat flux'? A detailed explanation of case studies and measurement methods for effective thermal countermeasures.

Do you know the uses of "heat flux"? There are various opportunities to measure temperature for different purposes, but if you understand "why the temperature is what it is," you can utilize that knowledge for appropriate thermal countermeasures. Toyota Motor Corporation's heat flow sensor, 'Energy flow,' can conveniently and responsively measure the pathways of heat intrusion, allowing you to identify the "heat flux" that causes the heat. We also provide solutions for measurement methods, instrumentation for products, and data analysis issues, all handled by Toyota's active engineers. Please read the materials first or feel free to contact us. ■Examples of utilization (excerpt) - Measurement of thermal insulation or thermal conductivity - How to dissipate heat from a circuit board without a cooling fan - Methods for dissipating heat, directing airflow, and controlling air conditioning in thermal damage design - Quantification of cost-effectiveness for heat countermeasure items

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Real-time monitoring of machining load with thermal flow sensors! Improving productivity through predictive maintenance.

Real-time monitoring of machining load with thermal flow sensors! Improving productivity through predictive maintenance.

Real-time monitoring of friction heat at the processing point! Detecting the completion of processing faster than temperature. A new method for predictive maintenance of equipment!

Heat flow (process) is a leading indicator of temperature (result). By measuring the flow of frictional heat energy generated at the machining point during machining, it is possible to monitor the condition of equipment and cutting tools and to expedite abnormal detection (predictive maintenance). <Examples of Utilizing the Heat Flow Sensor "Energy Flow"> ▼Overview: Measuring the heat flow and temperature caused by frictional heat when machining a torque converter. ▼Background: Until now, monitoring the machining state has relied on temperature sensors and vibration sensors. However, there are limitations in accurately detecting the timing of machining completion and the occurrence of abnormalities in real-time. To prevent unexpected equipment downtime due to cutting tool breakage, it is common to perform maintenance early based on past performance, experience, and the number of processes. ▼Evaluation Results: By installing the heat flow sensor and thermocouple close to the cutting tool, we measured the waveform of the heat flow transmitted to the arm from the frictional heat during machining. It was confirmed that the heat flow sensor could detect "machining completion" faster than the thermocouple. As a means of real-time monitoring of the machining state, the use of a highly sensitive heat flow sensor has been fundamentally validated as effective. *For more details, please download the PDF document or contact us.

  • 加工負荷02.jpg
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[Technical Documentation] Techniques for Temperature Measurement Using Thermocouples and Heat Flow Sensors

[Technical Documentation] Techniques for Temperature Measurement Using Thermocouples and Heat Flow Sensors

The idea of designing heat based on heat flow rather than temperature. Towards the development of an efficient thermal management system with heat flow sensors!

Are you aware that the temperature measured can deviate from reality depending on how the thermocouple is installed? This is a challenge that troubles many engineers dealing with heat. In thermal design of circuits, accurately understanding heat generation and dissipation is a technical trend. A heat flow sensor that can measure thermal energy with high precision can solve this issue. This technical document explains the challenges of thermocouple measurement and the advantages of heat flow sensors. [Examples of recommended fields] - Heat dissipation from engine surfaces - Thermal balance, heat loss, and thermal efficiency of heat exchangers and heat pumps - Evaluation of cooling capacity - Understanding the heat generation of each component in circuit thermal design

  • 電力計測に代わる発熱量の計測.jpg
  • 熱流センサによる発熱量計測.jpg
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[Explanatory Material] Understand in 5 Questions! Diagnosis of the "Heat Management Level" at Your Site

[Explanatory Material] Understand in 5 Questions! Diagnosis of the "Heat Management Level" at Your Site

With a diagnostic chart flow! An explanation of key points to focus on according to the diagnostic results.

The importance of thermal management is increasing due to the rising risks of high temperatures from the miniaturization and high performance of electronic devices and systems, the impact on the human body from the generalization and common use of electronic devices, and the growing demand for heat stress countermeasures (heatstroke prevention) due to rising average temperatures. This document allows you to diagnose the "level of heat management" at your site using a flowchart, and based on the diagnosis results, it provides hints for efficient countermeasures that address the causes of heat. Additionally, we have included examples of the use of thermal flow sensors, so please make use of them for your heat management efforts. [Contents (excerpt)] ■ Increasing importance of thermal management ■ Diagnosis chart flow ■ For those with a diagnosis result of "Basic Level" ■ For those with a diagnosis result of "Practical Level" ■ For those with a diagnosis result of "Advanced Level" *For more details, please download the PDF or feel free to contact us.

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Thermal flow sensor that visualizes the amount and direction of thermal energy.

Thermal flow sensor that visualizes the amount and direction of thermal energy.

Thermal design starts with the measurement of thermal energy! Toyota Motor's thermal flow sensor 'Energy flow'

The heat flow sensor is a device that can easily measure heat flux, which is essential for elucidating the mechanisms of temperature change. By converting the electromotive force generated according to the temperature difference between the front and back of the sensor into heat flow, this sensor can measure the "amount" and "direction" of thermal energy passing through its surface with high precision and rapid response. You can download documents summarizing each lineup and detailed specifications from the link below. For product specifications, pricing, and delivery times, please feel free to contact us through our official website. 【Features of Toyota Motor's heat flow sensor "Energy flow"】 ▼ Highly sensitive and responsive, capturing even slight heat flows (±10W/m2 and above) ▼ Thin at 0.25mm with low thermal resistance, flexible, and excellent in compressive load resistance ▼ No power supply or amplifier is needed; just measuring voltage is sufficient.

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Standard type (can only measure heat flow)

Standard type (can only measure heat flow)

Essential for aggressive thermal design! Toyota's in-house thermal flow sensor "Energy flow"

This is a heat flux sensor used by Toyota Motor Corporation in the field of car development. It can easily measure the "heat flux" necessary to elucidate the mechanisms of temperature change.

  • Thermometer
  • Sensors
  • Thermo-fluid analysis

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Technical Data: Product Specifications for the Thermal Flow Sensor "Energy Flow"

Technical Data: Product Specifications for the Thermal Flow Sensor "Energy Flow"

Not missing even the faintest fluctuations in heat! The secret of Toyota's highly sensitive thermal flow sensor "Energy flow" with low thermal resistance.

This document introduces the highly sensitive heat flow sensor "Energy flow," which is an essential item for the development of new thermal energy management systems. We will explain what heat flux is, the measurement principles and manufacturing technologies of Energy flow, and the strengths characterized by the product specifications. Measurement examples are also included, making it a recommended read for those facing challenges in areas such as wall penetration thermal evaluation in low-temperature environmental testing rooms and thermal performance evaluation of power ICs. [Contents] ■ What is heat flux? ■ Structure, measurement principles, and manufacturing methods of Toyota's heat flow sensor "Energy flow" ■ Product specifications and performance ■ Measurement application examples *For more details, please download the PDF or feel free to contact us.

  • 半導体式の感度.jpg
  • Energyflow製品概要.jpg
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Quantify the performance of insulation and heat shielding with thermal flow sensors to differentiate from competitors!

Quantify the performance of insulation and heat shielding with thermal flow sensors to differentiate from competitors!

Can you promote that insulation performance with numbers? The key to comfort and energy savings is understanding heat flow!

The heat flow sensor provided by Toyota Motor Corporation cannot solely convey the thermal insulation performance of buildings and energy-saving items through temperature alone. The heat flow sensor enables the measurement of slight heat flows that are difficult to measure with conventional methods, contributing to more efficient thermal design. It is an ideal product for solving challenges in architecture, construction, and building materials that require data-driven improvements, such as evaluating the performance of insulation and heat shielding materials and identifying thermal losses in buildings. 【Usage Scenarios】 - Performance evaluation of insulation materials: Accurately assess the performance of existing insulation materials and newly developed insulation materials. - Investigation of building heat loss: Identify areas of heat loss in buildings and assist in renovation plans for energy conservation. - Design of new buildings: Conduct heat flow simulations during the design phase to achieve optimal insulation design. - Renovation of existing buildings: Evaluate the insulation performance after renovation and verify its effectiveness. 【Benefits of Implementation】 - Quantitative evaluation of insulation performance: Enables data-driven assessments, resulting in highly reliable outcomes. - Contribution to energy conservation: Identifying and reducing heat loss leads to a decrease in energy costs. - Efficiency in design and construction: Allows for design and construction based on accurate data.

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[Proposal by Toyota Motor Corporation] Heatstroke prevention measures for factories and offices against extreme heat!

[Proposal by Toyota Motor Corporation] Heatstroke prevention measures for factories and offices against extreme heat!

Would you like to create a simulation that predicts the cost-effectiveness of heat countermeasure items using heat flow sensors?

On June 1, 2025, with the revision of the Labor Safety and Health Regulations, measures against heat stroke in the workplace became mandatory. A cool and comfortable work environment not only prevents heat stroke but also directly contributes to increased productivity. While there are many heat-related and energy-saving items available, it can be difficult to determine which items to implement and how effective they will be. At Toyota Motor Corporation, we are developing a simulator that utilizes heat flow sensors to predict the cost-effectiveness of heat countermeasure items, working towards the establishment of a comfortable working environment. For specifications of the heat flow sensor "Energy flow," please download the catalog or feel free to contact us. We also welcome inquiries regarding details of heat countermeasure simulations.

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