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240-SP Silicon-Cell Pyranometers

240-SP Silicon-Cell Pyranometers
240-SP Silicon-Cell Pyranometers
The 240-SP Silicon-Cell Pyranometers are calibrated to measure total shortwave radiation. Amplified versions are available in 2.5 volt, 5 volt, and 4-20 mA outputs.
Product Details

The 240-SP Silicon-Cell Pyranometers are calibrated to measure total shortwave radiation. Amplified versions are available in 2.5 volt, 5 volt, and 4-20 mA outputs.

The 240-SP series pyranometers compare favorably with second class standard pyranometers, but at a fraction of the cost. They have been used successfully for over 15 years in many different field measurement situations, including agricultural, meteorological, and solar energy applications.

Featuring a fast response time of less than one second, they are cosine-corrected to get accurate readings even if the sun is at a low zenith level, have a self-cleaning head, and are designed to be rugged for continuous outdoor use in all climates.

The 240-SP-230 All Season Heated Pyranometer has a 0.2 watt heater to keep water (liquid and frozen) off the sensor and minimize errors caused by dew, frost, rain, or snow blocking the optical path.

The new 240-SP-420 Smart Pyranometer can be connected directly to a computer for taking spot measurements or graphing and datalogging real-time shortwave radiation using the included software. The sensor can also act as a stand-alone shortwave radiation datalogger by simply connecting it to any standard 5 V DC USB power plug. Internal memory within the sensor head is capable of storing 10,000 user-specified periodic measurements that can be downloaded as a CSV file to a computer for analysis. Consult NovaLynx for more information.

The pyranometers can be secured to the 240-AL-100 Leveling Plate by means of a threaded insert in the bottom of the sensor. Three bolts assist in leveling the plate.

Specifications

  • Cosine Response:
    • 45° zenith angle: ± 1%
    • 75° zenith angle: ± 5%
  • Absolute Accuracy: ± 5%
  • Repeatability: ± 1%
  • Uniformity: ± 3%
  • Long-Term Drift: Less than 3% per year
  • Operating Environment
    • -25 to 55 °C
    • 0 to 100% relative humidity
    • Designed for continuous outdoor use
    • Can be submerged in water
  • Materials: Anodized aluminum with cast acrylic lens
  • Mass: 70 g (with 5 m lead wire)
  • Cable
    • 5 meters of twisted-pair wire
    • Foil shield
    • Santoprene jacket
    • Ending in pigtail leads
    • Additional cable is available in multiples of 5 meters
  • Warranty: 1 year against defects in materials and workmanship

240-SP-110

  • Input Power: None, self powered
  • Output: 0 to 0.20 mV (220 mV = full sunlight 1100 W m-2)
  • Linear Range: 0-350 mV (0-1750 W m-2); 1.75 full sun

240-SP-212, 240-SP-214, 240-SP-215

  • Current Draw: 285 µA
  • 2.5 V Option
    • Output: 0 to 2.5 V (2.2 V = full sunlight 1100 W m-2)
    • Input Power: 2.5 to 5.5 Vdc
    • Sensitivity: Custom calibrated to exactly 0.5 W m-2 per mV
  • 5.0 V Option
    • Output: 0 to 5 V (4.4 V = full sunlight 1100 W m-2)
    • Input Power: 5 to 5.5 Vdc
    • Sensitivity: Custom calibrated to exactly 0.25 W m-2 per mV
  • 4-20 mA Option
    • Output: 4-20 mA (20 mA = full sunlight 1250 W m2)
    • Input Power: 5 to 36 Vdc
    • Sensitivity: Custom calibrated to 78 W m2 per mA with 4 mA offset

240-SP-230 All Season Heated Pyranometer

  • Power for Heater: 12 Vdc @ 15.4 mA
  • Includes 240-SP-110, self powered
  • Output: 0 to 0.20 mV (220 mV = full sunlight 1100 W m-2)
  • Linear Range: 0-350 mV (0-1750 W m-2); 1.75 full sun

240-SP-420 Smart Pyranometer with USB Output to PC or Stand-Alone Data Logger

  • Consult NovaLynx for more information
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