Meteorology / surface energy flux measurement

For scientists interested in measurement of surface fluxes Hukseflux offers radiometers (net radiometers, pyranometers and pyrgeometers) as well as heat flux sensors and ultra high accuracy soil temperature profile sensors.
Hukseflux is the market leader in heat flux measurement related to meteorology and Bowen Ratio Systems.

Meteorology and surface energy flux

Hukseflux makes several sensors used in meteorological systems and networks. We are specialised in sensors for measuring:

What we contribute

Hukseflux company started in 1993 making sensors for measurement of heat flux in soils. In the course of the years, we have added many “special purpose” sensors and systems for other parameters of the surface energy balance. Our soil heat flux sensors and 4-component net-radiometers are popular sensors in meteorological networks.
Since 2007 we started making solar radiation sensors and soon after that added longwave radiation sensors.
Our soil temperature profile sensors and soil thermal conductivity sensor are typical research tools, used in high accuracy “research grade” networks.
Sensors made by Hukseflux passed validation and acceptance testing for a large number of national meteorological networks. We supply sensors with the highest accuracy in every class at the most attractive price level.

What is measured

Sensors of our pyranometer product line measure solar or “shortwave” radiation. They essentially measure the radiative energy flux onto or through a surface in [W/m²]. The most common parameters that we measure are:

Sensors of our pyrgeometer product line measure far infra red “longwave” radiation. The most common parameters that we measure are:
These 4 measurements combined are used to calculate the net-radiation.
HFP01 heat flux plate and its self-calibrating equivalent HFP01SC are the de-facto standards for soil heat flux measurement. In high-accuracy flux measurement a typical station is equipped with two or more sensors for good spatial averaging.
STP01 soil temperature profile sensor offers highly accurate temperature gradient measurement, including a reliable fixed distance between five measurement points at 2, 5, 10, 20 and 50 x 10⁻² m below the soil surface.
TP01 is a simple, robust sensor to measure soil thermal conductivity. In combination with STP01 and HFP01SC it offers a redundant measurement and allows users to verify the measurement accuracy of soil heat flux. In addition, TP01’s capability to perform a crude measurement of soil thermal diffusivity offers an independent possibility to verify performance of soil moisture content sensors.

Specifications

Pyranometers, pyrgeometers, net radiation sensors and heat flux sensors manufactured by Hukseflux are optimised for the demands of different applications. Unique features are:

Selecting a set of sensors

We can assist you in selecting a suitable sensor. A typical checklist is:

Advantages

We can assist you in selecting a suitable sensor. A typical checklist is:
Take a look at our selection of suitable sensors:

Application notes

Pyranometer selection guide: how to choose the best sensor for your application

The new ISO 9060:2018 standard. Do your pyranometers comply?

Products

SR30-M2-D1

Digital Class A pyranometer with heating and tilt sensor
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class A pyranometer
IEC 61724-1:2021 compliance meets Class A PV monitoring system requirements

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IR20 & IR20WS

Research grade pyrgeometers
Measurand longwave radiation
Optional measurand sky temperature, surface temperature

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SRA30-M2-D1

Digital Class A (secondary standard) albedometer with heating and tilt sensor
Measurand global solar radiation and reflected solar radiation
Optional measurand albedo or solar reflectance, net solar radiation

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SRA15 series

Spectrally flat Class B albedometers
Measurand global solar radiation and reflected solar radiation
Optional measurand albedo or solar reflectance, net solar radiation

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SR15-D1

Digital first class pyranometer with Modbus over RS-485 output and heater
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class B pyranometer

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IR02

Pyrgeometer with heater
Measurand longwave radiation
Optional measurand sky temperature, surface temperature

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SR15-D2A2

Digital first class pyranometer with Modbus over TTL and 4-20 mA output
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class B pyranometer
IEC 61724-1:2021 compliance Class B

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IR02-TR

Pyrgeometer with heater and 4-20 mA transmitter
Measurand longwave radiation
Optional measurand sky temperature, surface temperature

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SR15-A1

Analogue first class pyranometer with heater
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class B pyranometer

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SRA20-D2

Digital secondary standard albedometer
Measurand global solar radiation and reflected solar radiation
Optional measurand albedo or solar reflectance, net solar radiation

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SR05-D1A3

Digital second class pyranometer with Modbus RS-485 and 0-1 V output
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class C pyranometer
IEC 61724-1:2021 compliance Class B

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TP01

Thermal properties sensor
Measurement range 0.3 to 5 W/(m·K)

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DR20-A1

Analogue spectrally flat Class A pyrheliometer, with heating
Measurand direct solar radiation

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DR15-A1

Analogue spectrally flat Class B pyrheliometer, with heating
Measurand direct solar radiation

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NR01

4-component net radiometer
Measurand downward longwave radiation*, global solar radiation, net radiation, reflected solar radiation, upward longwave radiation*
Optional measurand albedo or solar reflectance, sky temperature*, solar duration, surface temperature*

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SR05-D2A2

Digital second class pyranometer with Modbus over TTL and 4-20 mA output
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class C pyranometer
IEC 61724-1:2021 compliance Class B

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FHF06

High temperature foil heat flux sensor for use up to 250 °C; patented technology, flexible, with temperature sensor and thermal spreaders
Measurand heat flux, temperature
Measurement range (-20 to +20) x 10³ W/m²

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SR05-A1

Analogue second class pyranometer
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class C pyranometer
IEC 61724-1:2021 compliance Class B

STP01

Soil temperature profile sensor with self-test
Measurand temperature at 5 depths from 0 to 0.5 m
Measurement range -30 to +70 °C

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SR05-LI19

Pyranometer with handheld read-out unit / datalogger
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class C pyranometer
IEC 61724-1:2021 compliance Class B

HFP01

Heat flux plate
Measurand heat flux
Measurement range -2000 to +2000 W/m²
Sensitivity (nominal) 60 x 10⁻⁶ V/(W/m²)

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FHF05 series

Foil heat flux sensors with thermal spreaders, flexible, different dimensions, with temperature sensor
Measurand heat flux, temperature
Measurand range (-10 to +10) x 10³ W/m²

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HFP01SC

Self-calibrating heat flux sensor
Measurand heat flux
Measurement range -2000 to +2000 W/m²
Sensitivity (nominal) 60 x 10⁻⁶ V/(W/m²)

HFP03

Ultra sensitive heat flux plate
Measurand heat flux
Measurand range -2000 to +2000 W/m²
Sensitivity (nominal) 500 x 10⁻⁶ V/(W/m²)

RA01

2-component radiometer
Measurand downward longwave radiation*, global solar radiation
Optional measurand sky temperature*, solar duration

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SRA01

Second class albedometer
Measurand global solar radiation and reflected solar radiation
Optional measurand albedo or solar reflectance, net solar radiation

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FHF05SC series

FHF05SC series heat flux sensors
Measurand heat flux, temperature
Measurand range (-10 to +10) x 10³ W/m²

SR25

Spectrally flat Class A pyranometer with sapphire outer dome
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class A pyranometer
IEC 61724-1:2021 compliance meets Class A PV monitoring system requirements

SR22

Secondary standard pyranometer with quartz domes – extended spectral range
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class A pyranometer
IEC 61724-1:2021 compliance Class A (when used with VU01)

SR20-D2

Digital Class A pyranometer with Modbus RTU and 4-20 mA output
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class A pyranometer
IEC 61724-1:2021 compliance Class A (when used with VU01)

SR20

Analogue Class A pyranometer
Measurand hemispherical solar radiation
ISO 9060:2018 classification spectrally flat Class A pyranometer
IEC 61724-1:2021 compliance meets Class A PV monitoring system requirements

VU01

Ventilation unit for SR20, SR20-D2, SR22, IR20 & IR20WS

DP01

Dome Protector for SR15 and SR30 pyranometers, set of 5 pieces

AMF03

Albedometer mounting kit for 2 x SR30 / SR15 pyranometers

AMF02

Albedometer mounting kit for 2 x SR20 / SR11 pyranometers

SHR02

Shadow ring for pyranometers, combined with a pyranometer forming a diffusometer

PMF01

Pyranometer mounting fixture, for all Hukseflux pyranometer models, for 1 x pyranometer, horizontal or tilted

ALF01

Albedometer levelling fixture for AMF02, AMF03 and SRA series albedometers

PMF02

Dual pyranometer mounting fixture, for all Hukseflux pyranometer models, for 1 x horizontal and 1 x tilted pyranometer

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VMA01

Ventilation mounting adapter for PMF01, for 1 x VU01 ventilated pyranometer, horizontal or tilted

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Sensor Manager

Software for digital Hukseflux solar radiation sensors with a Modbus interface

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CMF01

Crossarm mounting fixture for pyranometers, albedometers and net radiometers

Pyranometer App

Turn your iPhone into a ‘pyranometer’ with our solar radiation / Pyranometer App

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