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An electrical signal produced by a thin film heat flux sensor is proportional to the total heat rate delivered to the sensor’s surface.
To calculate the heat flux, the recorded heat rate is divided by the sensor’s surface area. The source of the heat flux can vary; in theory, conductive, radiative, and convective heat can all be detected.
Different names for heat flux sensors include heat flux transducers, heat flux gauges, and heat flux plates. Some instruments, such as pyranometers for measuring solar radiation, are essentially single-purpose heat flux sensors.
Thin-film thermopiles, Schmidt-Boelter gauges, Gardon gauges, and circular-foil gauges are further heat flux sensors. The heat rate is expressed in Watts in SI units, while the heat flux is calculated in Watts per square meter.
There are several applications for thin film heat flux sensors. Common uses include investigations into the thermal resistance of building envelopes, investigations into the impact of fire and flames, or measures of laser power.
Applications that are more unusual include measuring the temperature of moving foil material and estimating fouling on boiler surfaces.
A conductive, convective, and radiative component each make up a portion of the overall heat flux. One might choose to measure all three of these numbers or just one, depending on the application.
A heat flux plate built into a wall serves as an illustration of how to quantify conductive heat flux. A pyranometer used to detect solar radiation is an illustration of how to measure the radiative heat flow density.
A Gardon or Schmidt-Boelter gauge, which is used for research on fire and flames, is an example of a sensor sensitive to radiative as well as convective heat flow.
The Schmidt-Boelter gauge’s wire-wound geometry allows it to measure both perpendicular and parallel flows, but the Gardon’s circular-foil construction necessitates that convection be measured perpendicular to the sensor face in order to be correct. In this instance, the sensor is fixed to a body that uses water cooling.
These sensors are employed in fire resistance testing to properly stoke the fire to which samples are exposed. Laser power meters, pyranometers, and other sensors with internal heat flux sensors are a few examples.
The Global Thin film Heat Flux Sensors market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
With its ultra-thin design and 0.5mm thickness, the HF-10S is a great choice for research applications and manufacturing control procedures where the sensor’s heat resistance must be kept to a minimum.
A thermopile is an electronic device that converts thermal energy into an electrical voltage proportionate to the temperature differential across its hot and cold junctions of thermocouples.
This is what a thin film heat flux sensor does. Thin substrate heat-flux sensors are a great option for research and engineering applications as well as manufacturing control and monitoring processes, and EKO Instruments offers a variety of sizes and thicknesses of these sensors.
The thin film heat flux sensor HF-10S is an excellent choice for research applications and manufacturing control procedures since it is extremely thin (just 0.5mm thick), weatherproof, and has a very low thermal resistance.
