Manufacturer of research instruments for radiation and environmental measurement: pyranometers, weather and road weather sensors including accredited calibration services.
Kipp & Zonen B.V. (OTT HydroMet)
Delft (NL) · Fellbach (DE) · Sterling, VA (US) · Singapore (SG) · France (FR)New on Amplifa
About Kipp & Zonen
Kipp & Zonen is a measurement instruments company specialized in environmental and radiation measurement, headquartered in Delft (Netherlands) with origins dating back to 1830. The portfolio comprises pyranometers, pyrgeometers, pyrheliometers, UV radiometers, albedometers, net radiometers, sunshine duration sensors as well as all-in-one weather sensors (WS J-series, continuing the Lufft platform), wind, precipitation, visibility and road weather sensors, scintillometers, ceilometers, sun trackers, reference cells and soiling instruments for PV monitoring. Since 2018, Kipp & Zonen has been part of the OTT HydroMet group, which also includes Lufft (founded 1881 in Stuttgart) and MeteoStar; in 2025, Atonometrics was acquired for solar and soiling monitoring. In addition to instrument manufacturing, the company offers installation and maintenance in accordance with IEC 61724, ISO/IEC 17025-accredited calibrations for pyranometers of all brands and classes (including Hukseflux and EKO), repair, technical support and extended warranty programs. Service locations exist in Delft, Fellbach (Meteorology Division), Sterling (USA), Singapore and France; sales are handled worldwide.
- Site
- XH Delft, Netherlands
- Processes
- Installation & Maintenance (solar and weather stations), Calibration according to ISO/IEC 17025 (pyranometers, all brands/classes), Mixed-brand pyranometer calibration (Class A, Kipp & Zonen, Hukseflux, EKO), Repair/servicing of radiometers and measuring instruments, Installation & maintenance (IEC 61724-compliant, SCADA integration), Calibration & repair (ISO/IEC 17025-accredited), Mixed-brand pyranometer calibration (Kipp & Zonen, Hukseflux, EKO), Technical support
- Materials
- SRA / RMA Service, ISO/IEC 17025 Calibration, Mixed-Brand Calibration, IEC 61724 Installation & Maintenance
- Certificates
- ISO/IEC 17025 (accredited calibration)
- Founded
- 1830
- Industries
- Solar energy / PV monitoring, Meteorology & climatology, Road weather & traffic, Environmental monitoring, Research, Hydrology (OTT HydroMet)
- 01
Instrument development and manufacturing (radiation and weather sensors)
- 02
Installation & commissioning (IEC 61724-compliant, SCADA integration)
- 03
Calibration (ISO/IEC 17025-accredited)
- 04
Repair & service
- 05
Technical support & warranty programs
Measurement Principles & Methods
SRA / RMA Service
Calibration and repair handling via locations in Delft, Fellbach and North America.
ISO/IEC 17025 Calibration
Accredited, traceable calibration of pyranometers of all brands and classes.
Mixed-Brand Calibration
One coordinated calibration cycle for Class-A pyranometers from Kipp & Zonen, Hukseflux and EKO.
IEC 61724 Installation & Maintenance
Standards-compliant installation and preventive maintenance of solar and weather stations including SCADA integration.
Locations
Delft
NLHeadquarters, sales (solar), manufacturing, calibration & repair
- ISO/IEC 17025-accredited calibration laboratory
- Automated calibration process (developed centrally)
Fellbach
DEMeteorology Division (OTT HydroMet Fellbach GmbH), calibration & repair
Sterling, VA
USUS Sales Office, calibration & repair
Singapore
SGRepair & service
France
FRBranch office, repair & service
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Installation & Maintenance (solar and weather stations)Testing | – | – | – | – | – |
| Calibration according to ISO/IEC 17025 (pyranometers, all brands/classes)Testing | – | – | – | – | – |
| Mixed-brand pyranometer calibration (Class A, Kipp & Zonen, Hukseflux, EKO)Testing | – | – | – | – | – |
| Repair/servicing of radiometers and measuring instrumentsTesting | – | – | – | – | – |
Additional services
Quality & Accreditation
Kipp & Zonen offers ISO/IEC 17025-accredited, traceable calibrations for pyranometers of all brands and classes as well as installation and maintenance in accordance with IEC 61724. The standard warranty is generally two years; extended or premium warranty options (up to 5 years) are available.
| Evidence | Delft |
|---|---|
| ISO/IEC 17025 (accredited calibration) |
History
- 1830
Petrus Jacobus Kipp purchases a pharmacy in Delft and begins selling scientific instruments.
- 1844
Kipp publishes designs of a gas generator widely used in laboratories.
- 1881
Gotthilf Lufft founds the Mech. Werkstatt G. Lufft in Stuttgart.
- 1924
Kipp & Zonen develops the first pyranometer.
- 1927
Expansion of thermopile and radiometric instrument manufacturing.
- 1986
Lufft switches from mechanical barometers to digital instrumentation.
- 1987
MeteoStar develops weather data processing and visualization systems.
- 2018
Kipp & Zonen is integrated into OTT HydroMet alongside Lufft and MeteoStar.
- 2025
Acquisition of Atonometrics (solar and soiling monitoring).