Overview
M5 Heat Flux Sensor
The M5 module represents Hudyne’s most compact M5 Heat Flux Sensor Solution with ALTP technology. With our operational time constant being below 1us even the fastest process details can be captured. Our small design is especially made for combustion processes and all type of flow applications, where installation space is limited. The active sensor surface (black front side) can be customized depending on the desired sensitivity.
Its stainless steel housing provides a pressure-tight, durable construction, while the optional pressurized air-cooling system ensures enhanced thermal stability under demanding conditions. Specifically designed for extreme environments, the M5 excels under intense heat loads. Dimensionally compatible and easily interchangeable with most commercial pressure sensor formats, the M5 integrates seamlessly into existing setups.
Each module is factory-calibrated, guaranteeing consistent and reliable performance right from the start. An optimized amplification system can be found below under our Amplifier section.
M5 Heat Flux Sensor:
- Sensor thread with M5x0.5 threading. Sensor length 20 mm
- Customizable cooling solutions to match the requirements of your measurement campaign
- Customizable signal connection and amplifier system
- Short pulse temperatures up to 4000 K
- Permanent temperatures up to 250 °C (with cooling)
- Pressure resistant up to 50 bar
| Mechanical: |
M5×0.5 threading Sensor length 20 mm Pressure resistant up to 50 bar |
|---|---|
| Thermal limits: |
Short pulses up to 4000 K With cooling > 250 °C |
| Measurement range: | 10 W/m² up to 40 MW/m² |
| Accuracy: |
Standard 15 % absolute Relative 5 % |
M5 Heat Flux Sensor- System Parts
Amplifier
M5 Heat Flus Sensor – Downloads
View & Download
Mounting Instructions
Publications
Formula Sport Engine Measurements
Find the corresponding Research Article here: Journal of Engines
Example Data
Explore how the M5 redefines compact performance by reviewing our example data and seeing the results firsthand.
Contact
Use our contact form to get directly in contact with us: Get in Contact
Technical drawings and instruction manuals are available upon request. For more details contact info@hudyne.com or fill out our contact form.
Calibration
Hudyne offers both convection- and radiation-based calibration methods to ensure stable, repeatable sensor performance across a wide thermal range. Please visit our calibration page for more insights: Calibration
M5 Heat Flux Sensor – FAQ
How do our Heat Flux Measurement solutions get shipped?
Each sensor comes with a rugged casing and an individual calibration curve. Our specialty signal amplifiers can be shipped together with your sensors in one package on request. This also allows us to deliver a fully calibrated measurement chain — professionally aligned end-to-end in our lab before shipment.
What delivery times can be expected?
For our standard heat flux solutions, an average lead time of 3 weeks can be expected. Please note that custom configurations may be subject to extended lead times.
How do we calibrate our Heat Flux Measurement solutions?
For a standard application, we make use of our radiation calibration approach. It is also applicable for convection and conduction. You can also check out our research article about it: Research. We also offer several specialized calibrations. If you have further questions feel free to ask under info@hudyne.com.
Do I always need to use an amplifier for heat flux measurements?
There’s no universal answer to this. It strongly depends on the expected structural frequencies and the heat flux amplitudes involved.
As a general rule of thumb: the smaller the heat flux or the higher the frequency, the more advisable it is to use a dedicated measurement amplifier.
How long is our M5 heat flux sensor calibration valid?
We recommend a re-calibration every 2 years when the sensor is used.
How do I calculate the actual heat flux value?
With the supplied sensitivity value of the sensor, the output voltage of our sensors can be directly converted into heat flux.
The relation is:
Heat flux Q̇ = Measured Voltage / Sensor Sensitivity
