SMP21 Pyranometer

  • ISO 9060 Secondary Standard
  • 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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SMP21 Pyranometer

The SMP21 is a secondary standard pyranometer that combines the sensor technology from the CMP21, has the RS-485 Modbus® interface, analogue output, low maintenance and 5 year warranty (*).

The SMP21 has an 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 SMP21 with the CVF4 ventilation unit.

The SMP21 has Modbus® RTU interface, amplified analogue output, improved response time and individual temperature corrected measurement data. The SMP21 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 SMP21 is protected against over voltage, reversed polarity and short circuiting.

Thanks to standardized output and connections of every SMP21, 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. Back to productcategory

Specifications

Spectral range (20% point) 280 to 3000 nm
Spectral range (50% points) 285 to 2800 nm
Response time (63%) < 0.7 s
Response time (95%) < 2 s
Zero offset A < 7 W/m²
Zero offset B < 2 W/m²
Temperature dependence of sensitivity (-20 ºC to +50 ºC) < 0.5 %
Temperature dependence of sensitivity (-40 °C to +70 °C) < 1 %
Analogue output (-A / -V version) 4 to 20 mA / 0 to 1 V
Digital output 2-wire RS-485

FAQ

  • 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

Accessories

Accessory Description
CMF Mounting Fixtures CMF Mounting Fixtures
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CMF1 and CMF4 mounting fixtures for all CMP series pyranometers Add To Basket
Glare Screen Kit Glare Screen Kit
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Sun protection screen for downward facing radiometers mounted on an albedo/net radiation mounting plate Add To Basket
CM121B/C Shadow Ring CM121B/C Shadow Ring
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To be used with Kipp & Zonen pyranometers, smart pyranometers, pyrgeometers and UV radiometers to shield the instrument from direct radiation. Add To Basket
METEON Data Logger METEON Data Logger
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METEON is a hand-held read-out device that displays real-time radiation values and has an integrated data logging function to store up to 3500 samples. Add To Basket
LOGBOX SD Data Logger LOGBOX SD Data Logger
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The LOGBOX SD is a weatherproof data logger specifically designed for use with Kipp & Zonen solar radiation instruments. It allows the connection of multiple radiometers and their temperature sensors. It has a large storage capacity, thanks to the internal memory and a SD memory card. LOGBOX SD can work unattended in remote locations for up to 6 months. Add To Basket
Adjustable Tilt Radiometer Mounting Kit Adjustable Tilt Radiometer Mounting Kit
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Mount a radiometer at a desired solar zenith angle between 0° and 90° to measure tilted global or diffuse radiation. Add To Basket
CVF4 Ventilation Unit CVF4 Ventilation Unit
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Ventilating radiometers improves the reliability and accuracy of measurements and reduces maintenance. CVF4 is a high quality ventilation unit designed to be used with the higher performance Kipp & Zonen solar instruments. Add To Basket