SMP22 Pyranometer

  • ISO 9060 Secondary Standard
  • Most accurate pyranometer currently available 
  • Lowest directional error < 5 W/m²
  • Individual temperature correction from -40°C to +80°C
  • No change of desiccant for 10 years
  • RS-485 Modbus® communication
  • 5 year warranty (*)
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SMP22 Pyranometer

The SMP22 is a secondary standard pyranometer that combines the new smart interface with quartz domes and sensor technology from the CMP22. Which has a proven track record of decades, making it the most accurate and reliable pyranometer in the world. The SMP22 has the widest spectral range, improved directional response, and reduced thermal offsets. Because of the highest optical quality domes the directional error is reduced below 5 W/m2. The SMP22 comes standard with RS-485 Modbus® interface and 5 year warranty.

The SMP22 has internal desiccant that will last for at least 10 years. This minimizes maintenance significantly.

The interval for dome cleaning can be extended, and the quality of measurements maximized, by fitting SMP22 with the CVF4 ventilation unit.

The SMP22 has a digital interface, amplified analogue output, improved response time and individual  temperature corrected measurement data. The SMP22 is supplied with individual measured cosine response data. The wide and low power supply range from 5 to 30 VDC makes integration in meteorological and solar energy stations easy. The SMP22 is extreme robust and comes with 5 years warranty.

Thanks to standardized output and connections of every SMP22, exchanging instruments for recalibration is easy. 

SmartExplorer Windows™ software for data logging, display of data and Modbus® address setting is provided as standard.

(*) This product will need to be registered by the end-user within 6 months of purchase to activate the warranty extension.

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Spectral range (20% point) 190 to 4000 nm
Spectral range (50% points) 200 to 3600 nm
Response time (95%) < 2 s
Zero offset A < 3 W/m²
Zero offset B < 1 W/m²
Directional response (up to 80° with 1000 W/m² beam) < 5 W/m²
Temperature dependence of sensitivity (-20 ºC to +50 ºC) < 0.3 %
Temperature dependence of sensitivity (-40 °C to +70 °C) < 0.3 %
Analogue output (-A / -V version) 4 to 20 mA / 0 to 1 V
Digital output 2-wire RS-485


  • What kind of services do you provide for the SMP22?
    • SMP22-V & SMP22-A SMART Pyranometer (molecular sieve)
      Part number: Description: Extra information:
      0338750 Inspection Full inspection + inspection report.
      0999910-2 Sensitivity calibration Indoor calibration against traceable reference.
      (New calibration certificate will be supplied)
      0999930 Directional error test Measured at four zenith angles and four azimuth angles
      9016381 Sunshield
      0016400 Leveling screw
      0016401 Fixed foot
      0362416 Outer dome kit Mounted on ring and includes fixing screws and o-ring seal.
      2523146 Waterproof 8-pin plug
      0362621 Waterproof 8-pin plug +10m cable
      0362622 Waterproof 8-pin plug +15m cable
      0362623 Waterproof 8-pin plug +25m cable
      0362624 Waterproof 8-pin plug +50m cable
      0362625 Waterproof 8-pin plug +100m cable
      0362775 Replace outer glass dome Factory repair (new dome will be fitted)
      0362772 Replace inner glass dome Factory repair (new dome will be fitted)
      0362752 Replace bubble level Factory repair (new bubble level will be fitted)
      Service Replace 10K thermistor Factory repair (new 10K thermistor will be fitted)
      Service Replace detector Factory repair (new detector will be fitted)
      0374700 Replacement smart interface (Volt) Factory repair (new smart interface will be fitted)
      0374701 Replacement smart interface (Ampere) Factory repair (new smart interface will be fitted)
      0365715 Configuration smart We can apply your required communication parameters
      0999911 Replacement calibration certificate Please provide serial number and instrument type.
      0362100 Large radiometer fixing kit Fixing kit
      0999910-3 Sensitivity calibration ISO17025 Calibration can only be done between april and september.
      0305722 Glare screen kit For downwards facing setup.

      Is your question still unanswered? Contact Support
  • What type of pyranometer can I use for my fixed PV panels farm?
    • For this application the CMP10 and SMP10 are advised as they have an internal drying cartridge that will last for at least 10 years.

      Please note that the pyranometer needs to be mounted in the same angle (POA) as the PV panel. 


      For users that prefer the desiccant visible Kipp & Zonen offers the CMP11 and SMP11 with visible and user changeable desiccant.

      Is your question still unanswered? Contact Support