Application: 

The total radiation meter is used to measure the total solar radiation in the spectral range of 0.3 to 3μm. It 

can also be used to measure the solar radiation incident on the inclined plane, such as the reflection 

radiation can be measured by induction facing down, such as the scattered radiation can be measured by 

masking the halo. Therefore, it can be widely used in solar energy utilization, meteorology, agriculture, 

building materials aging and air pollution and other departments to do solar radiation energy 

measurement. 

Working principle： 

This solar total radiation meter is based on the principle of thermoelectric effect: the induction element is 

wound electroplated thermoelectric reactor, and its surface is coated with black coating with high 

absorption rate and high emissivity, which can ensure that the deviation between the azimuth response 

and cosine response of the meter is very small. The hot contact is on the induction surface, and the cold 

node is located in the body, and the hot and cold contact produces the thermoelectric potential. And then 

converted to the radiant flux density. 

Selection of windproof glass hemisphere cover: JGS3 quartz glass from the United States is adopted. The 

transmittance of glass is evenly and smoothly maintained above 0.95 in the range of transmittance 

wavelength from 350 to 2600 nanometers. The windproof glass cover is double-layer, and the inner cover 

has isolation function on the infrared band, so that the radiation measurement can be limited to the 

short-wave part, and the inner cover can isolate the infrared radiation of the outer cover. 

The integrated circuit composed of precision devices is placed in the instrument to compensate the 

nonlinearity of the instrument output and reduce the influence of temperature and nonlinearity

Installation and use： 

The table should be installed in the surrounding open, above the induction surface without any obstacles. 

Then adjust the horizontal position of the radiation meter cable plug to the north, and fix it firmly. Then 

connect the output cable of the total radiation meter with the recorder, and you can observe. It is best to 

fix the cable firmly on the mounting frame to reduce breakage or intermittent interruption in windy days. 

Pay attention to: 

1. The total radiation is the most commonly used meteorological offices and stations for radiation 

observation instruments, the first thing to consider is the installation of site condition, to make the upper 

hemisphere cover without obstacles block glass, make whole hemisphere radiation from the open, to 

ensure the obstacle don't keep out the direct solar radiation, therefore in the east and the west instrument 

shall have good observation conditions. 

2. Install the radiation meter horizontally on the observation platform, make the output plug of the meter 

face north, adjust the level and fix it, and then connect the output line of the general meter with the 

recorder. 

3, when the hail should stop observation, buckle the protection cover. In order to ensure the accuracy of 

data, observers should regularly wipe the dust on the glass cover, and if desiccant silica gel particles are 

found to change color, they should be replaced in time.