ALTP Heat Flux Sensor Overview
Hudyne heat flux solutions redefine the limits of speed, precision, and durability. Built on our advanced Atomic Layer Thermopile (ALTP) Technology, they deliver response times below 1 microsecond. They capture even the most rapid thermal changes with unmatched accuracy. Each heat flux sensor probe is factory-calibrated ensuring consistent performance. Designed for extreme conditions, their compact form factor, enhanced by an optional active cooling system, ensures reliable performance in demanding environments. Our heat flux sensors can be individually customized to suit your specific needs.
ALTP Heat Flux Solution M5
ALTP Heat Flux Solution M8
Hudyne M5
M5x0.5, 50 bar, 25 mm, SMA Connector, active Cooling
ALTP Heat Flux Solution M8
Size Comparison of our heat flux solutions
At Hudyne, we offer two sensor models — the ALTP M5 and M8. Both deliver the same full performance and differ only in diameter. Their form factors match the dimensions of common commercial pressure sensors enabling simple drop-in replacement in existing setups. In terms of spatial efficiency, the M5 heat flux probe requires roughly 61% less volume than the M8 — while maintaining the identical performance envelope.
Despite their compact footprint, both sensors feature a pressure-tight construction. Optional active cooling is available for increased duty cycle, reduced drift on high load cycles, and performance headroom in demanding applications such as transient thermal events, rapid cycling, or elevated ambient environments.
ALTP specific additional information
We recommend using our sensor modules in combination with our active amplifier systems. These amplifiers are specifically optimized for our technology, offering benchmark performance in frequency response (over 2 MHz Bandwidth) and noise floor.
We are pleased to present our example data page, featuring a range of measurement examples from diverse environments.
Our rental sensor modules come with factory-calibration, which can be further enhanced with optional services. Please don’t hesitate to contact us with any specific requests.
Heat Flux Sensor – FAQ
How do our ALTP 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 ALTP 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 ALTP 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
