Using the spring-loaded levelling base, the pyranometer can be attached to (near) horizontal tubing and surfaces. When mounted securely in position, the base allows for fine adjustment of the pyranometer levelling.The SR15 pyranometer is the First-class brother of the SR30. First class refers to the instrument class; pyranometers are classified as second class, first class or secondary standard, where the latter provides highest measurement accuracy. In addition, SR30 provides high data availbility through its internal ventilation & heating system, preventing dew and frost on the domes. SR15 provides good measurement accuracy and is typically used for meteorological observations.
For more information, check out the SR15 product page at Hukseflux Thermal Sensors.