1. Catalogs
  2. Hukx
  3. Self-calibrating heat flux sensorTM HFP01SC

Self-calibrating heat flux sensorTM HFP01SC

Self-calibrating heat flux sensorTM HFP01SC

Self-calibrating heat flux sensorTM HFP01SC

Product catalog summary
Introduction
The HFP01SC is a self-calibrating heat flux sensor designed for soil applications, offering high accuracy and quality assurance. It features an on-line self-test for stable performance verification and self-calibration to compensate for errors due to soil thermal conductivity, sensor stability, and temperature dependence.

Unique Features and Benefits
  • Low thermal resistance and large guard area as per ISO 9869 standard.
  • Low electrical resistance for minimal electrical noise interference.
  • High sensitivity for accurate measurements in low-flux environments.
  • Robust design with strong cables, suitable for permanent installation.
  • IP67 protection for outdoor use.
  • Incorporated film heater for self-testing.

Suggested Use
Ideal for high-accuracy scientific soil heat flux measurements with a high level of data quality assurance.

Measurement and Control Requirements
  • Millivolt measurement for heat flux.
  • Current measurement for heater or voltage over a current sensing resistor.
  • Relay with 12 VDC nominal output for heater current switching.

Calibration
Calibration is traceable to international standards, following ASTM C1130 practices.

Options
  • Longer cable options available in multiples of 5 m, up to 40 m.

Specifications
  • Measurand: Heat flux.
  • On-line functionality: Self-test and self-calibration.
  • Sensing area: 8 x 10-4 m2.
  • Sensor thermal resistance: 81 x 10-4 K/(W/m2).
  • Measurement range: -2000 to 2000 W/m2.
  • Sensitivity: 60 x 10-6 V/(W/m2).
  • Operating temperature range: -30 to +70 °C.
  • IP protection class: IP67.
  • Film heater resistance: 100 Ω ± 10%.
  • Film heater power supply: 9 to 15 VDC.
  • Self-test interval: Every 6 hours, with a 180-second heating duration.
  • Daily average power consumption: 0.02 W.
  • Standard cable length: 2 x 5 m.

About Hukx
Hukx is a leader in solar radiation and heat flux sensor technology, providing high-accuracy measurement solutions. With headquarters in the Netherlands and offices worldwide, Hukx supports customers throughout the sensor lifecycle, from design to recalibration.
See more

Catalog excerpts

Self-calibrating heat flux sensorTM HFP01SC-1

; Sensor Technology Self-calibrating heat flux sensor™ ‘"•Hw'***»*■■■• !S!!if**f***t<

 Open the catalog to page 1
Self-calibrating heat flux sensorTM HFP01SC-2

HFP01SC self-calibrating heat flux sensor™ is a heat flux sensor for use in the soil. It offers the best available accuracy and quality assurance of the measurement. The on-line self-test verifies the stable performance and good thermal contact of sensors that are buried and cannot be visually inspected and taken to the laboratory for recalibration. The self-test also includes selfcalibration which compensates for measurement errors caused by the thermal conductivity of the surrounding soil (which varies with soil moisture content), for sensor non-stability and for temperature dependence. HFP01SC...

 Open the catalog to page 2
Self-calibrating heat flux sensorTM HFP01SC-3

The result is a much improved accuracy & quality assurance of the measurement relative to measurements with conventional sensors such as model HFP01. Soil heat flux sensors are preferably left in the soil for as long as possible, so that the soil properties become representative of the local conditions. Using selftesting, the user no longer needs to take sensors to the laboratory to verify their stable performance. A typical measurement location is equipped with 2 or more sensors for good spatial averaging. Unique features and benefits – low thermal resistance – large guard area (required by...

 Open the catalog to page 3
Self-calibrating heat flux sensorTM HFP01SC-4

– in case a less accurate measurement is sufficient, consider model HFP01 – model FHF05SC for general purpose, curved surface and research applications up to 120 °C – view our complete range of heat flux sensors Figure 3 HFP01SC selfcalibrating heat flux plate: 1. film heater 2. h eat flux sensor plus passive guard, 3. 2 x cable, standard length is 5 m (optionally longer cable). Options – longer cable (both cables), in multiples of 5 m, cable lengths above 20 m in multiples of 10 m Figure 3 Explanation of the self-calibration: on the left, the heat flux sensor (2) measures a soil heat flux Φ....

 Open the catalog to page 4
Self-calibrating heat flux sensorTM HFP01SC-5

HFP01SC specifications General specifications measurand heat flux on-line functionality testing self-test including self-calibration sensing area sensor thermal resistance measurement range sensitivity (nominal) rated operating temperature range film heater resistance film heater rated power supply interval between selftests 6 hr heating interval duration power consumption daily average standard cable length

 Open the catalog to page 5
Self-calibrating heat flux sensorTM HFP01SC-6

About Hukx Hukx is the leading innovator in solar radiation and heat flux sensor technology. We are proud to set the standard in high-accuracy measurement, and to be working at the heart of the energy transition. Customers worldwide rely on our bestselling pyranometers and heat flux sensors. From sensor design and selection to supply and recalibration, we support you across the entire lifecycle. Hukx is headquartered in the Netherlands, with locally owned representative sales offices in the USA, Brazil, India, China, Southeast Asia, and Japan. Let us help you select the best sensor for your application....

 Open the catalog to page 6

All Hukx catalogs and technical brochures

  1. SRA30-M2-D1

    3  Pages

  2. SR30-M2-D1

    7  Pages

Archived catalogs

  1. TRSYS20

    4  Pages

  2. SR25

    4  Pages

  3. SR15 series

    4  Pages

  4. TP08

    2  Pages

  5. TP02

    2  Pages

  6. TP01

    1  Page

  7. TRSYS01

    1  Page

  8. TNS01

    1  Page

  9. THISYS

    3  Pages

  10. WS01

    1  Page

  11. CRC series

    1  Page

  12. GT series

    2  Pages

  13. TPSYS02

    1  Page

  14. THASYS

    2  Pages

  15. IR02-TR

    1  Page

  16. DR01

    2  Pages

  17. ALUSYS

    1  Page

  18. SR11-TR

    1  Page

  19. NF02

    1  Page

  20. HFP01

    1  Page

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.