
A heat flux sensor is a thermopile, an electronic device that translates thermal energy into an electrical voltage proportional to the temperature gradient across its thermocouples’ hot and cold junctions.
EKO Instruments offers a selection of thin substrate heat-flux sensors in a range of different sizes and thicknesses, an ideal option for research and engineering applications as well as manufacturing control and monitoring processes.
The HF-30S is a thin foil extra-large heat-flow sensor covering 30 x 30 cm². Its size ensures properly averaged thermal conductivity results on adequate, flat surfaces without the potential risk of local hot spot effects or thermal bridges.
Key Features:
ISO 9060:2018 | Class C |
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Response time 95% | < 18 Sec |
Zero offset A – Thermal Radiation (200W/m²) | ± 12 W/m² |
Zero offset B – Temperature change (5K/hr) | ± 5W/m² |
Zero offset C – Total zero off-set | ± 17 W/m² |
Non-stability (change/year) | ± 1.5 % |
Non-linearity (100 to 1000W/m²) | ± 1 % |
Directional Response (at 1000W/m² | 0 to 80°) | ± 20 W/m² |
Spectral Error | ± 0.2 % (Spectral selectivity ± 3%) |
Temperature response (-20°C to 50°C) | ± 3 % |
Tilt Response (0-90° | 1000W/m²) | ± 1 % |
Additional Signal Processing Error | N/A |
Technical Features : | |
Wavelength Range | 285 to 3000 nm |
Irradiance range (W/m²) | 0 to 2000 W/m² |
Signal Output | N/A |
Sensor Diagnostic | N/A |
Operating temperature | -40 to 80 °C |
Supply voltage | – |
Power Consumption | – |
Ingress protection | IP67 |
Calibration traceability / uncertainty | ISO 17025 / WRR / < 0.7% (k = 1.96) |
Standard Cable Length | 10m (Optional lengths 20m, 30m, 50m) |
IEC 61724-1:2021 | IEC Class C |