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FAQs - Solar Radiation & Photonic Sensors

Pyranometers

Added value of using a shaded pyranometer

Added value of using a shaded pyranometer

For PV application, what will be the added value of using a shaded pyranometer in comparison to direct and global horizontal measurements?  For direct solar radiation measurements ...

Advantages of Pyranometers versus Reference cell

Advantages of Pyranometers versus Reference cell

What will be the advantages of using a pyranometer over a reference cell? Reference cells are widely used to measure the irradiance in absolute units (W/m2) in monitoring applications ...

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

Frequency of dome cleaning?

Frequency of dome cleaning?

How often should a pyranometer dome be cleaned? Measuring solar radiation with pyranometers, soiling has a potential effect on the pyranometers output (irradiance). However due ...

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Characteristics of Pyranometers

Characteristics of Pyranometers

What are the characteristics of Pyranometers in ISO? Characteristics of pyranometers are stated under ISO9060 and categorized into three classifications: Secondary Standard, First ...

Pyrheliometer

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

Added value of using a shaded pyranometer

Added value of using a shaded pyranometer

For PV application, what will be the added value of using a shaded pyranometer in comparison to direct and global horizontal measurements?  For direct solar radiation measurements ...

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Spectroradiometers

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Small sensors

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

UV Radiometers

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Pyrgeometers / Four-Component Radiometer

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Sunshine Duration Sensors

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...

Sun Trackers

Function of the sun sensor

Function of the sun sensor

What is the function of the sun sensor on the STR-sun trackers? The sun sensor is a crucial component needed for accurate sun tracking. Since the STR sun tracker follows the sun ...

STR sun tracker used as positioner

STR sun tracker used as positioner

Can the STR sun tracker be used as positioner? The STR sun trackers can either be used for sun tracking as positioning applications. Due to the simple control command protocol ...

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

STR Sun Tracking Principle

STR Sun Tracking Principle

How can STR- Sun Tracker track the Sun?   From sun rise to sun set the compact EKO Sun-Trackers guarantee accurate sun tracking and pointing of the attached solar sensors. The ...

Solar Monitoring Stations

Added value of using a shaded pyranometer

Added value of using a shaded pyranometer

For PV application, what will be the added value of using a shaded pyranometer in comparison to direct and global horizontal measurements?  For direct solar radiation measurements ...

Characteristics of Pyranometers

Characteristics of Pyranometers

What are the characteristics of Pyranometers in ISO? Characteristics of pyranometers are stated under ISO9060 and categorized into three classifications: Secondary Standard, First ...

Frequency of dome cleaning?

Frequency of dome cleaning?

How often should a pyranometer dome be cleaned? Measuring solar radiation with pyranometers, soiling has a potential effect on the pyranometers output (irradiance). However due ...

Soiling effect versus measured irradiance

Soiling effect versus measured irradiance

What is the effect of soling versus the measured irradiance? Measuring solar radiation with pyranometers, pyrheliometers or spectroradiometer, soiling has will have an effect ...

STR Sun Tracking Principle

STR Sun Tracking Principle

How can STR- Sun Tracker track the Sun?   From sun rise to sun set the compact EKO Sun-Trackers guarantee accurate sun tracking and pointing of the attached solar sensors. The ...

Re-calibration interval of solar sensors

Re-calibration interval of solar sensors

The sensitivity of the solar sensor will slightly deviate with time when it is exposed to solar radiation. Therefore it is advised to re-calibrate the sensor every two years. For calibration ...