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240-140 & 240-150 Silicon Cell Pyranometer

240-140 & 240-150 Silicon Cell Pyranometer
The 240-140 Silicon Cell Pyranometer measures global solar radiation. The 240-150 (shown in photo) includes a mounting and leveling plate. When used with the 240-152 Shadow Band, it will measure diffuse radiation.
Product Details

The 240-140 Silicon Cell Pyranometer measures global solar radiation. When used with the 240-152 Shadow Band, it will measure diffuse radiation. This pyranometer is low cost, lightweight, and easy to install. The 240-150 (shown in photo) includes a mounting and leveling plate.

The sensor is a silicon photovoltaic cell which absorbs radiation from 0.35 to 1.15 microns. The silicon cell converts this light energy into electrical energy, and the output voltage (approximately 80 mV/1000 Wm²) is essentially linear with light intensity. Full scale response time is less than 1 millisecond due to the fact that the instrument is light sensitive, not heat sensitive. If the output is integrated over a daily period, the accuracy of the value is within ±3%. Accuracy of instantaneous values is ±5%. Temperature compensation is provided from 4° to 60°C.

Specifications

  • Sensor: Silicon photovoltaic cell
  • Spectral response: 0.35 to 1.15 microns
  • Sensitivity: Approx 80 mV/1000 Wm²
  • Full scale response time: < 1 millisecond
  • Impedance: 1 ohm
  • Accuracy: ± 5%
  • Temperature compensation: +4° to +60°C
  • Windshield: Pyrex glass dome
  • Leveling: Circular level and 3 threaded feet
  • Size: 5" Dia x 2" H
  • Weight/shipping: 1 lb/2 lbs

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