What is new at Hukseflux and where are upcoming events & conferences? Hukseflux exhibits at the major solar energy related conferences, and meetings related to surface energy flux measurements in climatology.


With the new SR15 digital pyranometer series, the family of next level solar radiation sensors is now complete! SR15-D1 and SR15-A1, with heater, are the only ISO 9060 first class sensors compliant in their standard configurations with the Class B specifications of IEC 61724-1 for PV monitoring systems.

The new SR15-A1 pyranometer, with heater, is the only ISO 9060 first class sensor compliant in its standard configuration with IEC 6174-1 Class B specifications.
The new PMF01 pyranometer mounting fixture fits all Hukseflux pyranometers. Mounting horizontally or tilted (POA), on a mast, crossarm or platform? No problem for PMF01.
More news: find out in our white paper how to prepare for the new ISO 9060:2018 standard.

It's hot! The new, heated FHF02SC is a next-level sensor from the world market leader in heat flux measurement. FHF02SC is a self-calibrating foil heat flux sensor with thermal spreaders and a heater, ideal for high-accuracy and long-term heat flux measurement, calorimetry and thermal conductivity test equipment.

We are hiring! We currently have 2 exciting job opportunities in Research & Development and Assembly at our HQ in Delft, the Netherlands. Please take a look at our Careers page. Job offers are valid until 13 May 2018.

The new all-digital DR30 pyrheliometer is released. It offers the highest accuracy and data availability, featuring on-board tilt and humidity sensors, and heating without offsets! Get DR30 for next level DNI measurement results.
We now have volume deals on calibrations of pyranometers and pyrheliometers, including all major brands. Get a quote.

New, from the market leader in heat flux measurement: FHF02 foil heat flux sensor! FHF02 is our standard model for general-purpose heat flux measurement. It is thin, flexible and stable. FHF02 is very versatile: it has an integrated temperature sensor and thermal spreaders to reduce thermal conductivity dependence.

The excellent performance of SR25 pyranometer, with sapphire outer dome, was confirmed in an independent test by NREL*. Beating pyranometers with quartz domes, it is now adopted as the diffuse radiation reference sensor. SR05 series received Type Certification from the Japanese Meteorological Agency (JMA); the first time for a digital pyranometer of any brand!

Hukseflux introduces a new heat flux sensor for industrial use: IHF01. It measures heat flux and temperature in high-temperature environments, and complies with industry safety standards such as CE and ATEX. IHF01 is waterproof, withstands high pressures and is extremely robust!

The summer of 2017 promises to be great for solar radiation measurement.  Following the release of SR30 in January and the IEC standard for PV monitoring in March, the new ASTM G213-17 standard for evaluating uncertainty is out now. Check out the new SRA20 albedometer too.

We are looking for new colleagues! Please take a look at our Careers page. We currently have 3 exciting job opportunities in Research & Development and Engineering & Testing at our office in Delft, the Netherlands. Job offers are valid until June 1 2017.

Hukseflux introduces a new product range of foil heat flux sensors. The first sensor in this range for general-purpose heat flux measurement is FHF01. It is thin, flexible and versatile, and at the same time robust (IP67 protection class); a unique combination. FHF01 has an integrated temperature sensor and fits flat and curved surfaces.

SR30 is here. The next level secondary standard pyranometer, with new RVHTM technology, offers the highest measurement accuracy and data availability, outperforming all pyranometers with traditional ventilation systems. SR30 is the first pyranometer compliant with Class A requirements of the new IEC 61724-1 standard for PV system performance monitoring.

The new SR30 secondary standard pyranometer is truly next level! Hukseflux will give a preview of the sensor at the Meteorological Technology World Expo 2016 in Madrid, booth 5085. Attendees of Solar Power International 2016, Las Vegas, can preview the feature packed SR30 at Hukseflux booth 642.

Hukseflux keeps on growing! We currently have 2 new exciting job offers for employment at our office in Delft, the Netherlands, valid until May 9th, 2016. Both vacancies can be found here (in Dutch): Product Development Scientist and Product Development Engineer.

Hukseflux launches SR05! The new digital second class pyranometer offers significant benefits for use in networks and systems:
- industry standard digital outputs: easy implementation and servicing;
- easy mounting and levelling, in particular with SR05’s unique ball levelling option;
- pricing: ISO second class pyranometers finally affordable for large networks.

Hukseflux develops and grows! We currently have 4 new job offers for employment at our office in Delft, the Netherlands. The job offers are valid until December 1st, 2015. An overview of the vacancies can be found here (in Dutch).

The new SR20-D2 and SR22 pyranometer are here! SR20-D2 is an upgrade of the successful SR20-D1 secondary standard pyranometer. SR20-D2 is made for the solar PV industry, offering two types of commonly used irradiance outputs: digital via Modbus RTU over RS-485 and analogue 4-20 mA (current loop). The new SR22 has high-quality quartz domes, resulting in an extended spectral range covering the full solar spectrum.

The new SR25 pyranometer takes solar radiation measurement to the next level! Using a sapphire outer dome, it has negligble zero offsets. When heating SR25, data availability and measurement accuracy are higher than when ventilating traditional pyranometers. Our secondary standard top model is available with analogue and digital output. See also The making of SR25.

Hukseflux is ISO 9001:2008 certified and has a worldwide support organisation to offer you local support and calibration services. New are the Hukseflux representations in India and Brazil! Please choose the "select your region" tab to visit the website of our local offices.

Get to know SR20-D1. It is the most accurate digital secondary standard pyranometer available. SR20-D1 outputs irradiance digitally and uses the industry standard Modbus communication protocol over RS-485, ideally suited for the solar PV industry.

Interested why pyranometers are the standard for outdoor PV system performance monitoring? Our new white paper explains the advantages of a pyranometer over reference cells.

Hukseflux introduces the high-quality VU01 ventilation unit. It is designed for use with the successful SR20 pyranometer and IR20 pyrgeometer. VU01 ventilation unit has the smallest footprint and enables users in need of a ventilated instrument to attain the highest measurement accuracy, even in extreme climates.

Research institute C-WET chooses Hukseflux instruments for solar mapping India. This largest project to date involves a vast solar resource assessment network of 120 measurement stations equipped with Hukseflux pyranometers, pyrheliometers and pyrgeometers.

We are pleased to announce that, as a result of constant growth and development, Hukseflux relocates to a brand new office with state-of-the-art production facilities. Take a look at an impression of the new Hukseflux building by cepezed architects. As of 10 June 2013, our new address is Delftechpark 31 in Delft, The Netherlands.

Hukseflux Thermal Sensors introduces the new IR20 & IR20WS pyrgeometers. As a result of Hukseflux' technological innovation, IR20 is research grade and priced significantly lower than competing models of the same performance level. See IR20's specs and benefits or take a look at "IR20: The making of" (PDF).

The new SR20 secondary standard pyranometer is now available. This Hukseflux solar radiation sensor is of the highest category in the ISO 9060 classification system: secondary standard.
Our pyranometer selection guide assists you in choosing the right instrument for your application. See "SR20: The making of" and view SR20's unique features and specifications.

Hukseflux now offers the best calibration uncertainty. Together with PMOD Davos, expanded calibration uncertainty of Hukseflux' first class instruments has been improved from 3 % to 1.8 % (k = 2).
Results of benchmarking Hukseflux solar sensors by independent research are excellent as well. See the pyranometer & pyrheliometer comparison (PDF).

The ASTM workgroup G03.09 studies on uncertainty evaluation of measurements according to GUM with pyranometers and pyrheliometers.
Hukseflux has recently issued a spreadsheet to the workgroup for further review.
Interested in uncertainty analysis of your measurement? Get a free copy.
ASTM is still looking for volunteers. See the workgroup's webpage.

What instrument to use for the measurement of solar radiation in a PV plant? A thermopile pyranometer or a reference cell? This paper explains why thermopile pyranometers are the de-facto standard sensors for the measurement of solar radiation.

Upcoming events & conferences

Upcoming events & conferences

Meteorological Technology World Expo

October 9 - 11

Amsterdam, the Netherlands


October 2018