In a favorable light and on the sunny side, the Pyranometer finds an ideal place. The determination of global radiation is carried out by means of measuring the thermal differences. Numerous high-quality thermo-elements are arranged on a black reception surface. The spherical cap protects the device against cooling by wind and dirtying. A levelling panel and shade collar guarantee optimal use and a homogenous temperature inside the case.

   "Second class" in accordance with WMO
   high-quality materials
   very robust and resistant against environmental influences
   long-lasting, UV-resistant
   analogous signal output
   two pyranometers to quantify the radiation balance
 

Pyranometer
 

To the sun and back…
that is how the highly precise albedometer measures incident solar radiation as well as reflection radiation (short-wave) over many different surfaces. Determination of radiation balance or separate signal output of direct and reflective radiation are possible without difficulties with this albedometer (albedo evaluation). Two thermopiles are especially aligned to the same sensitivity, thus guaranteeing exact results. Measurements are very reliable because the glass dome and white screens protect the measuring elements extremely well against wind and weather.

   radiation protection of the lower glass dome
   dry gel cartridge against fogging of the ground glass dome
   two modes of operation
   analogous signal output
 

Global- and Reflecting Radiation
 

This is a two channel radiometer with a cosine-corrected head that is fully sealed and is suitable for permanent external mounting. It has a common light collecting area for both channels.
This sensor is most frequently ordered with filters for Red and Far Red light (660 and 730 nm). This being a nominal standard around which much research work has been done. However, any two filter wavelengths can be chosen between 400 and 1000nm.

 

660/730 Sensor(Red/Far Red)
 

The PAR Quantum sensor counts quanta falling between 400 and 700nm. Light in this wave band is that used by plants for photosynthesis and such light is often referred to as 'PAR' (Photosynthetically Active Radiation). The sensor is calibrated in units of µmol/m˛/sec. A µmol is the new name for the unit µEinstein, which is one millionth of Avagadro's number of quanta or photons.

 

PAR Quantum Sensor
 

The SKS 1110 Pyranometer sensor is probably the widest selling unit in the Skye Instruments' range of sensors, with units sold all around the globe. It offers a compact sensor for solar energy measurements and compares favourably with thermopile sensors, offering considerable financial savings. It gives much greater output than thermopile instruments, which, with its better temperature stability, makes it easier to use. The sensors are calibrated against precision reference thermopile pyranometers in natural light conditions. Although production checks are made using artificial sources, these sensors are calibrated for use in natural daylight conditions, and should not be used with artificial or filtered light sources

 

SKS 1110 Pyranometer
 

Good times are coming when sunbeams hit the precision-grinded glass sphere and the rays are focused. The stronger the sun shines, the more intensive is the focal point which leaves traces on the recording cards. Absolutely self-sufficient, the sunshine recorder reliably measures year-round the sunniest hours. The robust, non-corrosive, and easy-to-use device is employed in northern as well as in southern latitudes worldwide.

   easy to adjust by built-in box level
   nearly maintenance-free – every now and then use a shammy cloth to dust the glass sphere
 

Sunshine Recorder