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Sensors precisely record the deviations between the possible and the actual power production and provide important key figures in regard to the quality of the entire plant. An error message is generated when a deviation is detected. The irradiation sensor is the most important element of the Sensor Box Professional and Professional Plus. It provides a reference value for the amount of solar irradiation that can be used to to evaluate the potential power production. Power reductions are easier to analyze with the internal cell temperature sensor. The sensor evaluation provides indications of the cause of the fault. Up to nine Sensor Boxes Professional and Professional Plus can be connected. It is possible to use the Sensor Boxes with their own RS485 inverters on the same bus the Solar-Log™. The Sensor Box Professional Plus also has the option to connect an ambient temperature sensor and window sensor.
Technical data | Sensor Box Professional | Sensor Box Professional Plus |
---|---|---|
Solar cell, laminated inside glass | Mono crystalline silicon (5 cm x 3.3 cm) | |
Dimensions (w x h x d) in mm, weight | 155 x 85 x 40; approx. 360 g | |
Housing | Powder-coated aluminum | |
protection mode | IP65 | |
operating temperature | -35 °C to +80 °C | -35 °C to +80 °C |
Power supply | Via RS485-data cable from Solar-Log™, no additional power supply required | |
Supply Current | Typical 80 mA | Typical 80 mA |
Communication Port | RS485 | RS485 |
Protocol | Solar-Log™, 9600 Baud, 8N1 | Solar-Log™, 9600 Baud, 8N1 |
Measurement uncertainty | Radiation strength: 5 W/m2 ± 2.5 % of the measured value (0 W/m2 bis 1400 W/m2) cell-temperature: ± 1K (-40 °C to +85 °C) | |
Installation | Same orientation and pitch as the PV generator | |
Connection cable | 4-pole, 3 m, weather and UV resistant (LiYC11Y(4 x 0.14) prolongable up to 50 m (0.14 mm2) | |
Conformity | CE in accordiance with DIN EN-61000-6-1:2007 and DIN EN-61000-6-3:2007 | |
Wind sensor | - | |
Ambient temperature sensor | - | |
Compatibility | Solar-Log 250, 300, 1200, 1900 and 2000 | Solar-Log 250, 300, 1200, 1900 and 2000 |
Warranty | 2 years | 2 years |
The ambient temperature sensor (PT1000) provides additional information on power generation. One problem that could arise and contribute to decreased yields is that the combination of cold temperatures and sunshine causes a buildup of ice. Such problems are easily detected when a sensor is being used. In addition to this, wind speeds can be tracked with a wind sensor and identified much better as possible causes for breakdowns, power reductions or power losses.
The Weather Station with integrated CMP3 pyranometer provides information on air pressure, wind direction, wind strength, humidity and the local solar irradiation. The local measured values give information on how weather influences the PV plant’s output. This data is available in the Solar-Log WEB Enerest™ XL portal.
Measurement | Measuring Range | Measuring Method |
---|---|---|
Pyranometer | 1400 W/m2; spectral range (50 %): 300 – 2800 mm | Kipp & Zonen CMP3 |
Ambient temperature | -50 °C – +60 °C | NTC |
Humidity, Air pressure | 0 – 100 %, 300 – 1200 hPa | Capacitive, MEMS capacitive |
Wind direction, Wind speed | 0 – 359,9 °, 0 – 75 m/s | Ultrasound, Ultrasound |
Technical data | |
---|---|
Power supply | 24 Vdc +/- 10 % |
Power consumption | 20 VA at 24 V |
Connection, Protection class | RS485, IP66 |
Dimensions in mm | Diameter: 150, Height: 332, Weight: 1.5 kg |
Compatible pyranometer types | WS 301 UMB, WS 501 UMB |
Compatibility | Solar-Log 300, 1200, 1900 and 2000 |
Warranty | 2 years |
Article number | on request |