![](pixel.gif)
![Home page button](Assets/BtnHomePageGray.gif)
![](pixel.gif)
![Sponsors button](Assets/BtnSponsorsGray.gif)
![](pixel.gif)
![Site map button](Assets/BtnSiteMapGray.gif)
![](pixel.gif)
![Search button](Assets/BtnSearchGray.gif)
![](pixel.gif)
![Contact us button](Assets/BtnContactUsGray.gif)
![](pixel.gif)
![Solar data button](Assets/BtnSolarDataGray.gif)
![](pixel.gif)
![About our data button](Assets/BtnAboutOurDataGray.gif)
![](pixel.gif)
![Monitoring stations button](Assets/BtnMonitoringStationsGray.gif)
![](pixel.gif)
![Instruments button](Assets/BtnInstrumentsGray.gif)
![](pixel.gif)
![Software tools button](Assets/BtnSoftwareToolsGray.gif)
![](pixel.gif)
![Educational material button](Assets/BtnEducationalMaterialGray.gif)
![](pixel.gif)
![Publications button](Assets/BtnPublicationsGray.gif) |
![](pixel.gif) |
![](pixel.gif)
EKO MS80 pyranometer
![](pixel.gif)
The
EKO MS80 pyranometer is an ISO9060:2018 Class A pyranometer and alternately a
World Meteorological Organization
Secondary Standard Radiometer, designed for the measurement of global horizontal irradiance,
the total solar radiation on a horizontal surface (the sum of direct and diffuse). It has an
isolated thermopile detector under a single dome and a Quartz diffuse. It has a ventilator and
heater to reduce the impact of dust, dew, frost, and snow. The MS80 has an easy to view
level.
![](pixel.gif)
Specifications
![](pixel.gif)
|
Sensitivity: approximately
10 µV/Wm-2. |
|
![](pixel.gif)
Impedance: < 45,000 650 Ohms. |
|
![](pixel.gif)
Temperature Dependence: ±1%
over ambient temperature range -20 to +50°C. |
|
![](pixel.gif)
Thermal Offset is ±2;
Wm-2 |
|
Deviation from linearity: ±0.2%
at 1000 Wm-2 . |
|
![](pixel.gif)
Response time: 0.5 second (1/e
signal). |
|
![](pixel.gif)
Directional Response: <±10% at
1000 Wm-2 . |
![](pixel.gif)
The relative accuracy of calibration
is about ~±2%.
![](pixel.gif)
Field calibration
![](pixel.gif)
Yearly calibrations are useful because
the pyranometer responsivity has been observed to deteriorate over time.
The most accurate way to calibrate a pyranometer is to measure the direct
normal beam irradiation with an Absolute Cavity Radiometer and the diffuse
irradiance with a black and white pyranometer shaded by a disk. The direct
normal data are projected onto the horizontal surface and the diffuse values
are added to obtain the best estimate of the total (global) irradiance on the
horizontal surface. In the field a reference pyranometer calibrated against
an Absolute Cavity Radiometer and diffuse measurements is used.
![](pixel.gif)
![Image map links to top of page and home page](Assets/ImgMapFooter.gif)
![](pixel.gif)
© 2023, UO Solar Radiation Monitoring
Laboratory.
Last
revised: July 31, 2023.
![](pixel.gif)
![](pixel.gif)
Home page: solardata.uoregon.edu |