Soiling sensor for photovoltaic applications Manual Soiling Sensor with HMI-PLC Monitoring

for solar PV modulesopticalmanual cleaning

Product Overview
SEVEN Soiling Sensor is designed to quantify energy production loss caused by environmental soiling on photovoltaic modules. Suitable for commercial, utility-scale, industrial and rooftop PV projects, the sensor reports production loss as a soiling ratio: a reading of 10% corresponds to approximately 10% energy loss at the site.

Operation
The SEVEN Manual Soiling Sensor determines soiling by comparing irradiance values from two sensors: a dirty sensor exposed to contamination like the modules, and a clean sensor that the operator wipes manually with a wet cloth. Measured data are available for local monitoring and can be read and integrated via PLC (RS485).

Technical specifications (table extracted)
Item Code — 3S-SMS-HMI-M
Soiling Ratio — 0% – 100%
Resolution — 0.1%
Uncertainty — ≤1%
Irradiance — 0…1600 W/m²
Followed Standard — IEC61724-1 (Annex C)
Display Device — HMI Display (55 mm x 96 mm)
Operating Temperature Range — -40°C to +85°C
Operating Humidity Range — 0 to 100%
Power Supply — 12 to 30 V DC
Power Consumption — 15 mA @ 24 V DC
Electrical Connection — 3 m LIYYC11Y PUR cable, UV- and weather-resistant
Galvanic Isolation — 1000 V between power supply and RS485 bus
IP Rating — IP65
Dimensions — 244 mm x 108 mm x 42 mm (W x L x H)
Weight — 500 g
Calibration — Each sensor calibrated and normalized under Class AAA sun simulator per IEC 60904-2 using a reference cell calibrated by ISFH (Germany)
Test — Each sensor tested under natural sunlight using a calibrated reference cell from Fraunhofer ISE (Germany).

Features / Technical specifications

• Item Code: 3S-SMS-HMI-M
• Soiling Ratio: 0% – 100%
• Resolution: 0.1%
• Uncertainty: ≤1%
• Irradiance: 0…1600 W/m²
• Standard: IEC61724-1 (Annex C)
• Display: HMI Display (55 mm x 96 mm)
• Operating temperature: -40°C to +85°C
• Operating humidity: 0 to 100%
• Power supply: 12 to 30 V DC
• Power consumption: 15 mA @ 24 V DC
• Electrical connection: 3 m LIYYC11Y PUR cable, UV- and weather-resistant
• Galvanic isolation: 1000 V between power supply and RS485 bus
• IP rating: IP65
• Dimensions: 244 mm x 108 mm x 42 mm (W x L x H)
• Weight: 500 g
• Calibration: Calibrated and normalized under Class AAA sun simulator (IEC 60904-2) using reference cell by ISFH, Germany
• Test: Tested under natural sunlight using a calibrated reference cell from Fraunhofer ISE, Germany