Sensor label BLK – GLD sticke

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BLK – GLD sticker series are black (radiation-absorbing) and gold (radiation-reflecting) stickers for Hukx heat flux sensors that enable separate measurement of convective and radiative heat flux. By applying BLK and GLD stickers to two matched sensors, convective flux (GLD) can be subtracted from combined convective+radiative flux (BLK) to obtain radiative flux.

Key product points

• GLD: gold reflective stickers — measures convective heat flux only.
• BLK: black absorbing stickers — measures convective + radiative heat flux.
• Use case: apply BLK and GLD to two matched heat flux sensors and compute radiative flux as Φradiation = ΦBLK − ΦGLD.
• Compatibility: designed for Hukx FHF05 series (including FHF05(SC)) and HFP01 heat flux sensors; stickers may be applied by the user or pre-applied at the factory.
• Effect on sensor sensitivity: negligible; no additional calibration required in typical use.

Technical specifications

• BLK — measurand: convective + radiative heat flux.
• BLK — spectral range (UV-VIS-NIR-FIR): 250 to > 10,000 × 10⁻⁹ m.
• BLK — absorption over range: > 95%.
• BLK — rated temperature range (continuous use): -40 to +150 °C*
• BLK — rated temperature range (short intervals): -40 to +260 °C*
• GLD — measurand: convective heat flux.
• GLD — spectral range (NIR-FIR): to > 1,000 × 10⁻⁹ m.
• GLD — reflection over NIR-FIR range: > 95%.
• GLD — spectral range (VIS): 400 to 700 × 10⁻⁹ m.
• GLD — reflection over VIS range: > 80%.
• GLD — solar absorption: < 20%.
• GLD — rated temperature range (continuous use): -185 to +150 °C*
• GLD — rated temperature range (short intervals): -185 to +260 °C*
• Effect on sensor sensitivity when applied: negligible.
• Application: user-applied or factory-applied; follow sensor user manual and instruction video for procedure.
• Versions and order codes (selected):
  • GLD for FHF05(SC): GLD-10X10, GLD-15X30, GLD-50X50 (SC), GLD-15X85, GLD-85X85 (SC)
  • BLK for FHF05(SC): BLK-10X10, BLK-15X30, BLK-50X50 (SC), BLK-15X85, BLK-85X85 (SC)
  • GLD for HFP01: GLD-80
  • BLK for HFP01: BLK-80
• * See also the rated temperature ranges of the heat flux sensors in the sensor user manuals.