Solar radiation measurement stations

Total TBQ radiation

It is mainly used to measure total solar radiation with a wavelength range of 0.3 to 3 microns.If placed horizontally downward, the reflected radiation can be measured, and the scattered light shielding ring can be measured.

It consists of a double-layer quartz glass cover, induction element, light shielding plate, surface body, desiccant and other parts.The induction element is the core part of the meter, which consists of a fast-responsive wound plating thermopile.The sensing surface is coated with 3M dull black paint, and the sensing surface is a hot node.When sunlight is irradiated, the temperature rises, and it forms a temperature differential electromotive force with the cold node on the other side, which is proportional to the solar radiation intensity.

Test range: 0～2000W/m2

Resolution 1W/㎡

Accuracy ±5%

Sensitivity: 7～14μV/wm-2

Response time: ≤35 seconds (99%)

Internal resistance: about 350Ω

Spectral range: 0.3~3μm.

Annual stability: ±2% internal resistance approximately 350Ω

Cosine response: ≤±7% (at 10° solar altitude angle)

Azimuth response error: ≤5% (at 10° solar altitude angle)

Working ambient temperature: -40℃~+50℃

UV radiation sensor

A photoelectric detector is used to receive ultraviolet light wave electrical signals.This product is a precision instrument used to measure the solar ultraviolet radiation (UVAB wavelength range) in the atmosphere

Measuring range: 0～400mW/m2

Spectral range: 280~400nm

Power supply method: DC 5V/DC12V

Output form: Voltage: 0-2.5V, RS485

Working environment: temperature -50℃~50℃

Fully automatic direct radiation

Measurement of radiation on the vertical surface of the sun (approximately 0.5°) and scattered radiation from a very narrow annular sky around the sun is called direct sun radiation, measured with a direct radiation meter.

1.Sensitivity: 7～14μV∕Wm-2

2.Time constant: ≤15S (99%);

3.Internal resistance: about 80 ohms;

4.Tracking accuracy: <168h±1°;

5.Opening angle: 4°;

6.Annual stability: ±1% (sensitivity change rate);

7.Working environment: -45℃~+45℃;

8.Power supply: DC12V;

9.Measurement range: 0~2000W/m2;

10.Signal output: 0~20mV;

11.Measurement accuracy: Worksheet <5%; Standard table <2%;

12.Power supply polarity: red + DC12V black 0

Scattered radiation

It consists of two parts: the total radiation meter and the halo ring.The function of the halo ring is to ensure that it can continuously block the direct sun radiation from sunrise to sunset.The halo ring consists of a halo ring, a ruler, a screw adjusting spiral, a bracket, and a chassis.The width of the halo ring is 65mm and the diameter is 400mm.It is fixed on the screw adjustment spiral of the ruler, and the latitude scale and declination scale are engraved on the ruler.The ruler and bracket are fixed to the chassis and should be fixed according to the geographical latitude of the shooting location.

Test range: 0～2000W/m2, resolution 1W/m2, accuracy ±5% Sensitivity: 7～14μV/wm-2 Response time: ≤35 seconds (99%) Internal resistance: about 350Ω Spectral range: 0.3～3μm.Annual stability: ±2% Internal resistance: about 350Ω Cosine response: ≤±7% (at 10° solar altitude angle) Azimuth response: ≤5% (at 10° solar altitude angle) Working ambient temperature: -40℃～+50℃

Net radiation

The new net total radiation meter is used to measure the net difference between the amount of radiation projected from the sky and the earth's surface projected upward.The measurement range is 0.3 to 3 microns short-wave radiation and 3 to 50 microns earth radiation.It is mainly used to study the status of the earth's heat revenue and expenditure, and can be used in meteorological research, thermal stress and heat balance research, and highway road condition monitoring.

The working principle of this meter is the thermoelectric effect.The induction part is a thermopile composed of copper plated with copper wire, and the thermopile is coated with 3M matte black paint.The two thermopiles receive solar radiation and earth radiation respectively.Due to the different radiation intensity absorbed by the upper and lower induction surfaces, temperature differences occur at both ends of the thermopile, and its output electromotive force is proportional to the difference in radiation intensity received by the induction surface.

In order to prevent the influence of wind and rain on the output of the radiation meter and protect the sensing surface, the meter is equipped with a hemispherical special polyethylene film cover that can transmit both short-wave radiation (0.3 to 3 microns) and long-wave radiation (3 to 100 microns).

1.Spectral range: 3~50μm (long-wave radiation)

2.0.3～3μm (short wave radiation)

3.Measuring range: -300~+1000W/m2

4.Response time: ≤35 seconds (99%)

5.Internal resistance: about 350Ω

6.Yearly stability: ≤±2%

7.Induction surface consistency: ±15%

8.Temperature characteristics: ±2% (-20℃～+40℃)

9.Site diameter: Φ120mm

10.Length: 307mm

11.Polyethylene film cover: Φ33mm

Sunshine hours sensor

It is used to continuously measure the number of sunshine hours.When the direct radiation irradiated on the instrument is greater than a certain preset threshold, it is automatically recorded by the collector as the number of sunshine hours.The instrument itself has no moving parts and consumes low power, so it can be used for long-term observation in the field.

Statistics the presence or absence of sunshine every minute, and clears it at 0:00 every day.

Measurement range: 0~24h

Resolution: 0.1h

Spectral range: 0.3～3μm

Response time: <5s

Cosine response: <±10% (at 10° solar altitude angle)

Nonlinearity: <±2%

Annual change rate: <±2%

Power supply method: DC5V

Output form: RS485

Working environment: temperature -50℃~85℃, humidity ≤100%RH

Photosynthetic effective radiation meter

Also known as photoquantum number, it is mainly used to measure the photosynthesis effective radiation of natural light in the wavelength range of 400 to 700 nm.It is simple to use and can be directly connected to a digital voltmeter or data collector, and can be used under all weather conditions.

The table uses a silicon photodetector and passes through an optical filter of 400-700nm.When light is irradiated, a voltage signal proportional to the intensity of the incident radiation is generated, and its sensitivity is proportional to the cosine of the direct angle of the incident light

Spectral range: 400~700nm

Range: 0-2000 W/m2

Power supply method: DC 5V

Output form: Voltage: 0～2.5V/RS485

Response time: approximately 1s (99%)

Temperature correlation: maximum 0.05%/℃

Cosine correction: up to 80° incident angle

Operating temperature: -40° to 65°

Relative humidity: 0~100%