Thin-film heat flux sensor FHF05

monitoringrobust

Overview
The FHF05 series is a range of general-purpose foil heat flux sensors designed for measuring heat flux in a wide variety of applications. Available in five different dimensions and sensitivities, these thin and flexible sensors feature integrated thermal spreaders and a built-in temperature sensor for reliable measurements. Their versatile design makes them suitable for measuring heat transfer by conduction, convection, and radiation.

Key features
• Thin, flexible, and versatile design suitable for a wide range of heat flux measurement applications.
• Available in five sensor sizes and sensitivities to match different measurement requirements. Larger sensor dimensions provide higher sensitivity and average heat flux over a larger area.
• Integrated Type T thermocouple for simultaneous temperature measurement.
• Patented thermal spreaders reduce sensitivity dependence on the thermal conductivity of the mounting surface.
• Measures heat transfer by conduction, convection, and radiation.
• Passive sensor design requiring no power supply.
• Waterproof IP67 construction for demanding environments.
• Robust cable connection block provides moisture protection and strain relief.

Applications
• Building envelope and insulation performance testing.
• Heat loss and thermal efficiency studies.
• Industrial process and equipment monitoring.
• Pipe, tank, and vessel heat transfer measurements.
• Research and development of thermal systems and materials.
• Separation of radiative and convective heat transfer using optional BLK and GLD stickers.

Specifications
• Measurand: heat flux [W/m²] and temperature [°C]
• Temperature sensor: Type T thermocouple, IEC 60584-1 Class 2
• Measurement range: (-91 to +91) × 10³ W/m²
• Sensor thickness: 0.4 × 10⁻³ m
• Thermal resistance: 11 × 10⁻⁴ K/(W/m²)
• Rated bending radius: ≥ 7.5 × 10⁻³ m
• Calibration uncertainty: ±5% (k = 2)
• Asymmetry: < 2%
• Operating temperature range (continuous): -70 °C to +120 °C
• Operating temperature range (short interval): -160 °C to +150 °C
• Outer dimensions (w x b) foil with guard, in 10⁻³ m: (10 x 10), (15 x 30), (50 x 50) , (15 x 85), (85 x 85)

Cable length options
• 2 m
• 5 m
• 10 m