Indoor Thermopile Pyranometer Calibration Services

Thermopile pyranometer calibration

Introducing secondary standard, first class, and second class pyranometer calibration services from Apogee Instruments.

Our new indoor thermopile pyranometer calibration service complies with the ISO 9847 type llc calibration procedure and includes a calibration certificate showing the procedure, traceability, and calibration factor. View example calibration certificate >.

While most manufacturers recommend pyranometers be recalibrated every two years, you may wish to wait longer depending on your particular requirements. For a simple method to check if recalibration of your pyranometer is necessary, visit the Apogee Clear Sky Calculator >.

Models We Calibrate

-Kipp and Zonen models: CM 11, 21 and CMP 10, 11, 21
-Hukseflux models: SR 05, SR 20, SR 11, LP02
-Apogee SP-510 (basic or ISO Calibration available)
-Ask about additional models

Complies with ISO 9847

Calibration method is performed by our highly trained technicians and complies with type IIC of the international standard ISO 9847.

Quick Turnaround

Most calibrations completed within three days of arrival.

Competitive Pricing

ISO 9847 Type llc Calibration and Maintenance     $195 + shipping
Repair cost estimated after evaluation

Repairs and Maintenance

Apogee can complete other repairs and maintenance including cleaning, basic cable repair, and desiccant replacement in some models. Call for details.


For questions, please call Apogee Tech Support at (435) 792-4700 M-F 8:00 AM – 5:00 PM MDT.

To send your sensor in for recalibration, please fill out the form below and one of our technicians will contact you with further instructions and a detailed quote. If the form does not show below, you can click here to view the RMA form >.

Fill out my online form.

If you have questions or need additional support for any of our products, please contact Apogee tech support by email at

One of our support specialists will respond as soon as possible during business hours which are M-F 8AM - 5PM MST.