Silicon Pyranometer Sensor (H-3791)

WaterLOG Silicon Pyranometer (H-3791)

The Silicon Pyranometer (H-3791) combines ruggedness and reliability, bringing you a unique sensor designed to measure global solar radiation within all types of applications and studies. Its highly stable silicon photovoltaic detector, is mounted within a fully cosine-corrected miniature head ensuring this sensor runs smoothly in everything from freezing cold temperatures to blistering heat. And did we mention it ranks right up there with first class thermopile type payranometers? Simply put, the Silicon Pyranometer is sure to get the job done in a variety of solar radiation applications.

  • Features
  • Specifications

Capable of measuring in all types of solar radiation applications, the Silicon Pyranometer (H-3791) can collect data in extreme temperature environments. In most natural daylight conditions, the error is ±3%.

  • High stability silicon photovoltaic detector
  • No error inducted from orientation
  • Calibrated against an Kipp & Zonen Precision Spectral Pyranometer (CM11) in Wm2 units
  • Extreme reliability and ruggedized for remote operation
  • Operating Temperature -30° to 70° C
Data Input
Calibration Calibrated against an Kipp & Zonen Precision Spectral Pyranometer (CM11) under natural daylight conditions. Typi­cal error under these conditions is ± 3%.
Sensitivity Typically 100 μ V/W/m2
Linearity Maximum deviation of 1% up to 1000Wm2
Stability < ± 2% change over a 1 year period
Cosine Correction Cosine corrected up to 80 degrees angle of incidence
Azimuth < ± 10% error over 60 degrees angle of incidence
Tilt No error induced from orientation
Data Output
Response Time < 500 ns
Detector High stability silicon photovoltaic detector (blue enhanced).
Sensor Housing Weatherproof anodized aluminum case with acrylic diffuser and stain­less steel hardware.
Size 2.13 in. Diameter X 1.34 in. High (54mm X 34mm)
Weight 3.88 oz. (110 g.)
Cable Length 16 ft. (5 m)
General Specifications
Operating Temperature -40 ° to +80 ° C
Temperature Dependence 0.15% per degrees C maximum
Impedance 50 Ω
Relative Humidity 0 to 100% non-condensing
Warranty The WaterLOG® Silicon Pyranometer (H-3791) is warranted against defects in materials and workmanship for twenty-four months from date of shipment.

Options & Accessories


Mounting fixture