Hukx

What Hukx does

Hukx (formerly Hukseflux, founded 1993 and rebranded in 2024) manufactures precision instruments for solar radiation and heat flux measurement, anchored by a pyranometer portfolio classified under ISO 9060:2018 across Class A (SR300-D1, SR200-D1), Class B (SR100-D1), and Class C (SR05-D1A3), supplemented by albedometers, pyrheliometers, pyrgeometers, net radiometers, diffusometers, and the FHF05 thin-film heat flux sensor series. The instruments are built on thermopile/Seebeck-effect sensing with proprietary RVH (Recirculating Ventilation and Heating) technology, digital Modbus RS-485 output, built-in tilt and leak diagnostics, and IEC 61724-1:2021 Class A compliance, positioning the SR30 and SR300-D1 as first-mover Class A pyranometers in standard configuration. Core customers are utility-scale and commercial PV operators requiring bankable performance monitoring, national meteorological agencies (IMD, JMA, CMA, DOE ARM, NEON, CEH, NIWE, INAMHI, DGRE), and scientific research institutions.

Hukx distributes exclusively through a direct-sales model via five regional offices (Center Moriches NY for North America, Singapore for Southeast Asia, Tokyo, Gurgaon, and Brazil), with quote-based pricing and no third-party resellers. Revenue derives from hardware sales of sensors and accessories (mounting hardware, surge protection devices, cables), recurring calibration services for pyranometers and heat flux sensors on a two-year cycle, and repair services backed by a 5-year product warranty. Marketing emphasizes technical content (knowledge center, application notes, YouTube explainers, LinkedIn regional pages, WhatsApp Business in Southeast Asia) targeting engineering and scientific buyers rather than broad consumer advertising.

The business model is fundamentally hardware-anchored with an attached recurring services annuity (calibration every two years per IEC 61724-1), supported by a niche-market leadership position in high-accuracy Class A pyranometry. Direct-sales is necessitated by the technical complexity of instrument selection, application engineering, and traceable calibration rather than by choice, creating a high-touch model that limits unit volume but supports premium pricing and durable customer relationships.

Name

Hukx

Legal name

Hukx

Website

https://hukx.com

Company type

Private

Founded year

1993

Operating status

Operating

Short description

Hukx (formerly Hukseflux) manufactures precision pyranometers, albedometers, pyrheliometers, and heat flux sensors used by utility-scale PV operators, national meteorological agencies, and scientific research institutions worldwide, with a global direct-sales footprint across five regional offices and recurring calibration services.

Ownership category

akta.pro rank

Product category

Scientific Measurement Instruments (Solar Radiation and Heat Flux Sensors)

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Laboratory Analytical Instruments (3826), 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

Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity) (IMAGAFAE), Solar Quality, Testing, Certification & Standards (Lab Testing, Inspections, Compliance) (EUAMABAN)

Keywords

• Solar radiation sensors
• Pyranometer manufacturing
• Heat flux measurement
• PV monitoring instruments
• Meteorological sensor calibration

Headquarters

HQ city

Center Moriches

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Solar Radiation Sensor Sales: Sale of pyranometers, albedometers, pyrheliometers, pyrgeometers, net radiometers, and diffusometers to PV monitoring, meteorological networks, and research institutions. Products are sold directly through regional offices with quote-based pricing.
2. Heat Flux Sensor Sales: Sale of heat flux sensors (FHF05 series) and heat flux measuring systems for scientific research, building physics, geotechnics, fire testing, and thermal insulation applications.
3. Calibration Services: Pyranometer and heat flux calibration services offered worldwide through the company's calibration organization. Instruments should be recalibrated every two years per IEC 61724-1 requirements.
4. Repair Services: Repair services for pyranometers, heat flux sensors, and accessories. Factory warranty of 5 years covers defects traceable to production errors.
5. Accessories and Mounting Hardware: Sale of accessories including mounting plates, leveling mounts, cables, and surge protection devices (SPD01).

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Hukx manufactures and sells precision scientific instruments for solar radiation and heat flux measurement. The core portfolio includes ISO 9060-classified pyranometers (Class A/B/C), albedometers, pyrheliometers, pyrgeometers, net radiometers, and diffusometers for solar irradiance measurement, alongside the FHF05 series thin-film heat flux sensors. The company also operates a worldwide calibration organization providing pyranometer and heat flux recalibration and repair services required approximately every two years per IEC 61724-1.

Product overview

Hukx is a market leader in solar radiation and heat flux measurement, offering a comprehensive portfolio of scientific measurement instruments. The product lineup centers on pyranometers (SR300-D1, SR200-D1, SR100-D1, SR05-D1A3, SR30-M2-D1) classified under ISO 9060 for different accuracy requirements, supplemented by albedometers, pyrheliometers, pyrgeometers, net radiometers, and diffusometers for complete solar radiation measurement. Heat flux measurement is addressed through the FHF05 series thin-film sensors and accompanying measuring systems. Supporting products include mounting hardware, surge protection devices, and the Hukx Sensor Manager software for sensor configuration and data acquisition. Services include pyranometer calibration, heat flux calibration, and repairs.

Differentiator

Problem solved

Functional benefit

Products and services

• SR300-D1 Industrial-Grade Pyranometer Industrial-grade spectrally flat Class A pyranometer with heating, tilt sensor, and RVH dew/frost mitigation for IEC 61724-1 Class A PV system performance monitoring. Features Modbus RS-485 digital output and remote diagnostics.
• SR200-D1 Pyranometer Spectrally flat Class A pyranometer for high-accuracy meteorological networks and diffuse radiation reference applications.
• SR100-D1 Pyranometer Spectrally flat Class B pyranometer suitable for agro-meteorological networks and PV monitoring applications.
• SR05-D1A3 Pyranometer Spectrally flat Class C pyranometer for basic solar radiation measurement applications.
• SR30-M2-D1 Digital Class A Pyranometer Digital Class A pyranometer with heating and tilt sensor featuring RVH technology for dew and frost mitigation. Previously the market standard, now succeeded by SR300-D1.
• FHF05 Series Heat Flux Sensors Thin-film heat flux sensors for measuring heat transfer in scientific research, building physics, geotechnics, and fire testing applications.
• Albedometers Sensors combining two pyranometers for measuring reflected solar radiation and calculating albedo.
• Pyrheliometers Instruments for measuring direct normal irradiance (DNI) on a solar tracker.
• Pyrgeometers Instruments for measuring longwave radiation balance.
• Net Radiometers Instruments for measuring net radiation balance combining multiple radiation sensors.
• Diffusometers Instruments for measuring diffuse solar radiation using the shaded pyranometer technique.
• Heat Flux Measuring Systems Complete systems for heat flux measurement including sensors and data acquisition components.
• Hukx Sensor Manager Software User interface software for communication between PC and Hukx digital pyranometers and pyrheliometers with a Modbus interface; allows sensor configuration, testing, and simple measurements.
• Pyranometer Calibration Services Worldwide pyranometer calibration services offered through the Hukx calibration organization. Instruments should be recalibrated approximately every two years per IEC 61724-1 requirements.
• Heat Flux Calibration Services Calibration services for FHF05 heat flux sensors offered worldwide through the Hukx calibration organization.
• Repair Services Repair services for pyranometers, heat flux sensors, and accessories. A 5-year factory warranty covers defects traceable to production errors.

Quantifiable outcome

• Dew/frost mitigation at <3W power consumption vs. 10W for traditional ventilation systems
• +6 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Middleton Solar: Australian manufacturer of high-accuracy pyranometers and pyrheliometers sold under the SP and EQ series. Competes with Hukx in the research-grade Class A solar radiation niche, particularly in the Asia-Pacific and academic markets.
• Kipp & Zonen (OTT HydroMet): Dutch manufacturer of pyranometers, pyrheliometers, and net radiometers — historically the most direct global competitor to Hukx in high-accuracy solar radiation instrumentation. Now part of OTT HydroMet, giving it broader meteorological systems reach.
• LI-COR Biosciences: US-based maker of the LI-200R and LI-190 quantum/pyranometer sensors widely deployed in agricultural and ecological research. Overlaps with Hukx in spectrally flat radiometry for research and agro-meteorology applications.
• Apogee Instruments: US manufacturer of silicon-cell and thermopile pyranometers (SP-series, SI-series) and quantum sensors. Competes with Hukx in PV monitoring and agricultural/environmental research, typically at lower price points.
• Eppley Laboratory: Long-established US manufacturer of pyrheliometers and pyranometers, including the Eppley PSP and NIP instruments used in many national meteorological networks. Closest American heritage competitor to Hukx in high-accuracy solar radiometry.
• EKO Instruments: Japanese maker of spectrally flat Class A/B/C pyranometers, pyrheliometers, and albedo/net radiometers under the MS-series brand. Competes head-to-head with Hukx in PV monitoring and meteorological networks, particularly in APAC.

Broad incumbents

• Campbell Scientific: US incumbent in environmental measurement systems offering data loggers, weather stations, and bundled solar radiation sensors. Competes by selling integrated systems rather than best-in-class pyranometers alone, but its own-brand and OEM sensors overlap with Hukx.

Emerging players

• Delta-T Devices: UK-based maker of environmental sensors including the BF3 sunshine pyranometer and soil heat flux plates. Overlaps with Hukx in agro-meteorology and heat flux segments, though with a smaller installed base in high-accuracy radiometry.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/hukx__
• YouTubeyoutube.com/@HukxSensorTechnology
• LinkedInlinkedin.com/company/huksefluxusa

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hukx