Description
The PV Albedometer is designed to measure both plane of array (POA) irradiance and reflected irradiance, providing accurate solar albedo ratio data for bifacial PV systems. It also includes an internal cell temperature sensor, and each unit comes with a mounting bracket and cable for easy installation.
All measured data are transmitted to dataloggers and receivers via a 3-wire RS485 bus using the Modbus RTU protocol.
Technical Specifications:
-
Sensor Type: Silicon Reference Cell (31 × 31 mm)
-
Measured Data:
-
POA Irradiance
-
Reflected Irradiance
-
Solar Albedo
-
2x Cell Temperature
-
(for 3S-ALBEDO-2T) 2x PT1000 Module Temperature Sensors
-
-
Irradiance Range: 0 – 1600 W/m²
-
Albedo Range: 0 – 1
-
Uncertainty: ≤1% (less than 2%); Class A per IEC 61724-1
-
Resolution: 0.1 W/m²; Class A
-
Response Time: 1 sec (less than 3 sec); Class A
-
Field of View: 170° (greater than 160°); Class A
-
Tilt-Azimuth Angle: <1°; Class A
-
Output Rate: 1 per second
-
Data Output: RS485 up to 38400 Baud
-
Communication Protocol: Modbus RTU
-
Power Supply: 12 … 30 V DC
-
Power Consumption:
-
20 mA max @ 24 V DC (3S-ALBEDO)
-
22 mA max @ 24 V DC (3S-ALBEDO-2T)
-
-
Cable: 3 m, 3x2x0.22 mm², UV and weather resistant
-
Galvanic Isolation: 1000 V between power supply and RS485 bus
-
Temperature Sensor Type: PT1000 Class A (EN 60751:2022)
-
Operating Temperature Range: -40°C … +85°C
-
Dimensions: 138 × 112 × 39 mm (L × W × H)
-
Weight:
-
0.52 kg (3S-ALBEDO)
-
0.53 kg (3S-ALBEDO-2T)
-
-
IP Rating: IP54 (optional IP65 or IP68)
-
Housing Material: Aluminium
-
Standards: IEC 61724-1:2021 and IEC 60904
-
Calibration: Each unit is calibrated under a Class AAA Sun Simulator according to IEC 60904-2 and IEC 60904-4, using a reference cell calibrated by ISFH-Germany
-
Origin: Türkiye
