Hukseflux
Hukseflux (operating as Hukx) is a Netherlands-based sensor technology company that designs and manufactures precision pyranometers, heat flux sensors, and related measurement instruments for solar energy, meteorology, scientific research, and building physics applications, selling globally through direct regional sales operations.
- Company typePrivate
- Founded1993
- HeadquartersDelft, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Hukseflux does
Hukseflux, now operating commercially under the brand name Hukx, is a Netherlands-headquartered (Delft) sensor technology company founded in 1993 that designs and manufactures precision instruments for solar radiation and heat flux measurement. The product portfolio spans seven core sensor categories — pyranometers, pyrheliometers, albedometers, pyrgeometers, net radiometers, diffusometers, and heat flux sensors — including flagship products such as the SR300-D1 pyranometer and the FHF05 heat flux sensor series, supported by integrated heat flux measuring systems and accessories. These instruments measure global horizontal irradiance, direct normal irradiance, reflected radiation, albedo, infrared radiation, net radiation balance, diffuse radiation, and heat transfer, and are deployed in PV system performance assessment, solar resource assessment, meteorology, building physics, geotechnics, fire and flammability testing, thermal insulation performance assessment, and thermal CFD simulation. The company holds the second-largest market share (17.3%) in the global thin-film heat flux sensor market, behind OMEGA at 27.3%.
The business operates a sales-led, direct-to-customer model with regional websites and dedicated phone/email contacts for the United States, Brasil, India, Japan, Southeast Asia, and the international market. Revenue is generated through hardware sales of sensor instruments and a complementary professional services layer covering pyranometer calibration, heat flux calibration, and repair services that recurs against the installed base. Pricing is not publicly disclosed and is handled through direct sales engagement, with multi-year contract cadence indicated for some accounts. Founder Eric Hoeksema is listed as owner and Robert Dolce as President, indicating an owner-operated private company with no disclosed parent, private equity, or venture capital backing. Marketing combines thought-leadership technical content (knowledge center, application notes, case studies, downloadable resources) with presence on LinkedIn, YouTube, X, and WhatsApp to reach engineers, researchers, and solar asset operators across primary segments of solar energy and research/engineering.
Hukseflux firmographics
Firmographics- Name
- Hukseflux
- Website
- https://hukseflux.com
- Company type
- Private
- Founded year
- 1993
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Hukseflux (operating as Hukx) is a Netherlands-based sensor technology company that designs and manufactures precision pyranometers, heat flux sensors, and related measurement instruments for solar energy, meteorology, scientific research, and building physics applications, selling globally through direct regional sales operations.
- Ownership category
- akta.pro rank
Hukseflux industry classification
Industry- Product category
- Scientific Measurement Instruments
- NAICS
- Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)
- akta.pro secondary industries
- Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD), Solar Plant Components Supply & Manufacturing (Modules, Cells, Wafers, Mirrors, Heliostats) (EUACAGAK)
Keywords
Where Hukseflux is headquartered
LocationHeadquarters
- HQ city
- Delft
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Hukseflux business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales
Revenue model
- Sensor Hardware Sales: Sale of solar radiation sensors (pyranometers, pyrheliometers, albedometers, pyrgeometers, net radiometers, diffusometers) and heat flux sensors as physical measurement instruments. Products include popular models like SR300-D1 pyranometer and FHF05 series heat flux sensors.
- Calibration Services: Professional calibration services for pyranometers and heat flux sensors, including repair services. These recurring service revenues support the hardware installed base.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Contact sales for pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels7 records
Hukseflux product offering
Product offeringCore offering
Hukseflux (now branded as Hukx) designs and manufactures precision scientific sensors for solar radiation and heat flux measurement. Its product portfolio includes pyranometers, pyrheliometers, albedometers, pyrgeometers, net radiometers, and diffusometers for solar energy applications, along with heat flux sensors and complete measuring systems for scientific research, building physics, geotechnics, and industrial testing. The company complements its hardware with professional calibration and repair services.
Product overview
Hukseflux (now Hukx) is a sensor technology company specializing in solar radiation and heat flux measurement equipment. The product portfolio consists of two main sensor categories: Solar Radiation Sensors (including Pyranometers like the SR300-D1, Albedometers, Pyrheliometers, Pyrgeometers, Net radiometers, and Diffusometers) and Heat Flux Sensors (including the FHF05 series and complete measuring systems). The company also offers calibration services for both pyranometers and heat flux sensors, along with repair services. The products are used in applications ranging from PV system performance assessment and solar energy research to building physics, geotechnics, fire testing, and scientific research.
Differentiator
Problem solved
Functional benefit
Products and services
- Pyranometers Solar radiation sensors that measure global horizontal irradiance, used for PV system performance monitoring, meteorology, and solar energy resource assessment.
- Albedometers Solar radiation sensors that measure both incoming and reflected solar radiation to determine surface albedo for meteorological and solar energy applications.
- Pyrheliometers Solar radiation sensors designed to measure direct normal irradiance from the sun for solar resource assessment and PV system monitoring.
- Pyrgeometers Sensors that measure infrared radiation for atmospheric radiation studies and meteorology applications.
- Net radiometers Sensors that measure the net radiation balance between incoming and outgoing radiation for environmental and energy balance studies.
- Diffusometers Sensors designed to measure diffuse solar radiation for meteorological and solar resource assessment applications.
- SR300-D1 pyranometer A pyranometer sensor designed for solar radiation measurement, used in PV system performance assessment and solar energy research applications.
- Heat Flux Sensors Sensors for measuring heat flux in various applications including scientific research, building physics, geotechnics, fire testing, and thermal insulation performance assessment.
- FHF05 series heat flux sensors A series of heat flux sensors for measuring heat transfer in scientific research, building physics, geotechnics, and thermal insulation applications.
- Heat flux measuring systems Complete measuring systems for heat flux monitoring and analysis across research and industrial applications.
- Pyranometer calibration service Professional calibration service for pyranometer sensors to ensure measurement accuracy and compliance with industry standards.
- Heat flux calibration service Professional calibration service for heat flux sensors to maintain measurement precision over the instrument lifetime.
- Repairs service Repair services for solar radiation sensors, heat flux sensors, and measuring equipment.
Quantifiable outcome
- 17.3% market share in global thin-film heat flux sensor market
- +1 more outcomes
Companies that use Hukseflux
Customer profileSegments2 records
Ideal customer profiles2 records
Hukseflux technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Hukseflux partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights4 records
Hukseflux competitors and assessment
Company assessmentMarket position
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Hukseflux social profiles
Digital presenceHukseflux financial estimates
Financial estimateRevenue estimate
Valuation estimate
Hukseflux leadership team
Management profileNumber of profiles
Profiles2 records
Hukseflux funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Hukseflux M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Hukseflux
What does Hukseflux do?
Hukseflux (now branded as Hukx) designs and manufactures precision scientific sensors for solar radiation and heat flux measurement. Its product portfolio includes pyranometers, pyrheliometers, albedometers, pyrgeometers, net radiometers, and diffusometers for solar energy applications, along with heat flux sensors and complete measuring systems for scientific research, building physics, geotechnics, and industrial testing. The company complements its hardware with professional calibration and repair services.
Is Hukseflux a public or private company?
Hukseflux is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Hukseflux founded?
Hukseflux was founded in 1993. It employs 11 to 50 people.
Where is Hukseflux based?
Hukseflux is headquartered in Delft, Netherlands, in the Europe region.
How does Hukseflux make money?
Two revenue lines are on record. Sensor Hardware Sales are the primary driver. The others are calibration Services.
Does Hukseflux have an API?
No public API is recorded for Hukseflux.
What industry is Hukseflux in?
Hukseflux's product category is Scientific Measurement Instruments. Its primary akta.pro industry code is IMAGAFAC, Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches), with a secondary code of HDAHALAD, Environmental Sensors (Temperature/Humidity/Gas/Air Quality). Its NAICS code is 334519 and its SIC code is 3823.