Albedometer

The Albedometer is used to measures the irradiance values as well as the albedo ration of bifacial panels. Besides the mentioned measurements, it includes also the Internal cell Temperature Sensor. It is supplied along with Mounting Bracket and Cable.

All measured meteorological data are transferred to dataloggers and
receiver units via a 2-wire RS485 bus with Modbus RTU protocol.

The PV Albedometer provides the needed data to calculate the performance ratio and measure the solar albedo when bifacial panels are used.

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Datsaheet

Item Code	3S-ALBEDO
Sensor Type	Silicon Reference Cell (31 x 31 mm)
Measured Data	POA Irradiance, Reflected Irradiance and Solar Albedo
Irradiance Range	0 – 1600 W/m²
Uncertainty	≤1,2% (less than 2%; as per IEC 61724-1 standard Class A)
Resolution	0.1 W/m² (less than 1 W/m²; as per IEC 61724-1 standard Class A)
Response Time	1 s (less than 3 sec; as per IEC 61724-1 standard Class A)
Field of View	170° (Larger than 160° as per IEC 61724-1 standard Class A)
Tilt-Azimuthal Angle	0°- 0° (≤1°; as per IEC 61724-1 standard Class A)
Output Rate	1/s
Data Output	RS485 up to 38400 Baud
Communication Protocol	Modbus RTU
Power Supply	12 to 30 V DC
Power Consumption	20 mA max @24 VDC
Electrical Connection	3 m LIYYC11Y PUR Cable, UV and Weather Resistant
Galvanic Isolation	1000 V between power supply and RS485 bus
Operating Temperature Range	-40°C to + 85°C
Operating Humidity Range	0 to 100 %
Box Dimensions	140 mm x 110 mm x 42 mm (W x L x H)
Weight	0.3 kg
IP Rating	IP54 (Optional IP 65, IP 68)
Sensor Housing Material	Aluminum
Standard	IEC 61724-1:2021 and IEC 60904
Calibration	Each sensor is calibrated under Class AAA Sun Simulator as per IEC 60904-2 and IEC 60904-4 by using a reference cell calibrated by ISFH-Germany
Test	The test is carried under natural sunlight by using a calibrated reference cell from Fraunhofer ISE, Germany