This product is no longer available and has been replaced by: SR05-L. Some accessories, replacement parts, or services may still be available.
LP02-L Pyranometer
Services Available
Repair Yes
Calibration Yes
Free Support Yes


The LP02, manufactured by Hukseflux, is an ISO 9060:2018 spectrally flat Class C (second class) pyranometer that monitors solar radiation for the full solar spectrum range. It produces a millivolt signal that is measured directly by a Campbell Scientific data logger. The LP02 can provide solar radiation measurements for a variety of meteorological applications.

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Benefits and Features

  • Compatible with most Campbell Scientific data loggers
  • Measures reflected solar radiation when inverted
  • Provides measurements in direct sunlight, under plant canopies, when the sky is cloudy, and in artificial light
  • Includes bubble level and leveling screws, eliminating the need for a separate leveling base and simplifying installation
  • Acceptable for providing the solar radiation data used in stability estimations
  • Dome protects thermopile and allows water to roll off of it
  • Designed for continuous indoor and outdoor use


Detailed Description

The LP02 measures solar radiation with a high-quality blackened thermopile protected by a dome. The blackened thermopile provides a flat spectral response for the full solar spectrum range, which enables the LP02 to be used under plant canopies or lamps, when the sky is cloudy, and for reflected radiation measurements.

The LP02 includes a bubble level, three adjusting screws, and a cable gland. The bubble level and adjusting screws allow the sensor to be leveled without using a leveling base. The gland facilitates cable replacement.

The LP02 produces a millivolt signal that is measured directly by a Campbell Scientific datalogger.

Two LP02 pyranometers can be mounted back-to-back to make a low-cost albedometer; contact Campbell Scientific for more information.


Sensor Blackened thermopile protected by a dome
Measurement Description Monitors solar radiation for the full solar spectrum range
Spectral Range 285 to 3000 nm
Maximum Irradiance 2000 W/m2
Sensitivity 15 µV/W/m2 (nominal)
Operating Temperature Range -40° to +80°C
Temperature Dependence < 0.15% per °C
ISO Classification ISO 9060:2018 spectrally flat Class C (second class)
Body Diameter 7.8 cm (3.1 in.)
Dome Diameter 3.0 cm (1.2 in.)
Height 5.9 cm (2.3 in.)
Weight 363 g (0.8 lb) with 4.6 m (15 ft) cable


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR1000 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information


The LP02 includes a bubble level and three adjusting leveling screws, which allow the sensor to be leveled without using a leveling base. The CM225 Solar Sensor Mounting Stand is used to attach the sensor to a crossarm. The CM225 consists of a rectangular plate, mounting bracket, U-bolts, washers, lock washers, and nuts. The LP02 should be mounted away from all obstructions and reflective surfaces that might adversely affect the measurement.

If the sensor needs to be mounted at an angle, a CM255 or CM255LS adjustable-angle mount can be used instead.