Pyranometer Solar Radiation Sensor for Weather Instruments

VT9 is a solar radiation sensor that can be applied for most common solar radiation observations. The scientific name of this instrument is pyranometer. VT9 pyranometer complies with the ISO 9060 second class specifications and the WMO guide. VT19 is a high accuracy hand-held read-out unit / datalogger. The portable VT9 - VT19 combination is well suited for mobile measurements and short term datalogging. VT9 measures the solar radiation received by a plane surface from a 180o field of view angle. This quantity, expressed in W/m2 , is called “hemispherical” solar radiation. VT9 pyranometer can be employed outdoors under the sun, as well as indoors with lamp-based solar simulators. Its orientation depends on the application and may be horizontal, tilted (for plane of array radiation) or inverted (for reflected radiation). VT19 is used to display the measured radiation and for datalogging. Once programmed with the sensitivity of VT9, the display will read the actual value of the solar radiation in W/m2. Programming VT19 is done through its PC interface. The system is delivered in a practical transport case, for easy transport and protection during field measurement campaigns. The case also includes the necessary software, AA-type batteries and a USB cable. Batteries allow for approximately 50 days of operation. VT19 may also be used with other pyranometers and heat flux sensors.

Operation:

Operation of VT9-VT19 is easy

As VT19 has already been programmed at the factory, read-out of VT9 can be done by switching on the VT19.

Logging options should be set by connecting the VT19 to a PC.

Delivery:

VT9 / VT19 / 2 spare batteries (AA) / USB cable / software / transport case

Suggested US:

Short-term field measurement of solar radiation

Amplification of pyranometer signals

Education in solar energy

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