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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.
| Item Code | 3S-ALBEDO |
| Sensor Type | Silicon Reference Cell (31 x 31 mm) |
| Measured Data | Global Irradiance, Reflected Irradiance and Solar Albedo |
| Irradiance Range | 0 – 1600 W/m² |
| Uncertainty | ≤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 85 mm (L x W x H) |
| Weight | 0.67 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 |
The capacitance between the probe and the vessel wall changes as the level of the material changes. When the material level is below the probe, the capacitance is relatively low. As the material level rises and comes into contact with the probe, the capacitance increases due to the change in dielectric constant between the material and the air.
Capacitance Level Sensors are suitable for measuring the level of both liquid and solid materials, including grains, powders, and granular substances. They can be used in various types of storage vessels, such as silos, tanks, hoppers, and bins.
These sensors offer benefits such as continuous level measurement, high accuracy, and reliability. They are capable of detecting both high and low-level conditions and can provide real-time monitoring and control of the material inventory.
Capacitance Level Sensors can be configured with different probe designs, lengths, and materials to suit the specific requirements of the application. Some sensors offer additional features such as temperature compensation, built-in diagnostics, and advanced signal processing algorithms to enhance performance and reduce false readings caused by factors like material buildup or coating on the probe.
It’s important to consider the material properties, vessel geometry, and environmental conditions when selecting and installing Capacitance Level Sensors to ensure accurate and reliable level measurement. Additionally, proper calibration and regular maintenance are necessary to maintain optimal sensor performance over time.