The device realizes measuring the actual physical intensity of the sunshine.
The device realizes measuring the actual physical intensity of the sunshine. The operation is based on the measurement of direct incoming power under a wide spectrum transmission glass dome.
According to the requirements of the global warming, the device has extended measuring range and special compensation methods to take the nonlinearities and other errors (like angle errors, etc.) into count.
The device has its own micro-controller to do the math stuff and to store the calibration data. Because the sensor measures the incoming solar power, it can measure the sun duration, too. To do this, there is a limit value expressed in W/m2 and the device compares the actual solar radiation against this limit; if the power is greater then or equal to the limit, the sensor will increment an internal counter. The final value of this counter has the physical meaning of Sun Duration in seconds. The limit has a default value of 120W/m2 but it is free to change using the appropriate SensorSetup program.
With an adjustable shade the device can be used to measure the indirect sunshine. Additonally, because the device has the standard RS-485 field bus as output, it is easy to connect two BIS-06 together: one measures the direct sunshine, while the other measures the reflected power (pyrradiometer or albedometer).
Pyranometer Sun Duration Measuring RangeO - 2500W/m2 0-PERIOD seconds ResolutionlW/m2 1 second
Accuracy0,7 % FSR 10 second FSR
Setting Time5 seconds 5 seconds
OutputRS-485 System-6 or Modbus protocol Powerl2V/5mA max.