PV Soiling Sensor

Cleaning decisions are shifting from empiricism to data-driven approaches. Online measurement of the sludge buildup ratio (SR), defined by the IEC 61724-1:2021 international standard, differentiates the impact of frost, snow, rain, dust storms, smog, and anthropogenic pollution sources, allowing maintenance personnel to determine "when is the most cost-effective time to clean." Three models cover different levels of accuracy and budget: the ZTD-6/6S identifies uniform sludge buildup, while the ZTD-9/12 further identifies icing, condensation, and snowfall, supporting non-uniform sludge detection, with up to three probes available. A single device can optimize cleaning frequency, saving money on fewer cleanings and maximizing electricity savings on more frequent cleanings.

Technical Parameters

• This series of light scattering principle devices includes models ZTD-6/6S/9/12. Functionally, the ZTD-6/6S detects the dust accumulation/contamination ratio, while the ZTD-9/12 adds icing/dew and snowfall detection. Probe configurations are, in order: single probe (ZTD-6/6S), dual probe (ZTD-9), and triple probe (ZTD-12). The ZTD-6 only detects uniform dust accumulation, while the ZTD-9/12 supports non-uniform dust accumulation. The measurement range is 100%~50%, with a contamination ratio measurement accuracy of 1% in the 90%~100% range (2% in 80%~90%, and 4% in 50%~80%). The devices are IP67 protected, adaptable to -40℃~+85℃ and 0~100%RH environments, with a stability of 1%/year and a response time of <1s. They support Modbus 485 RTU and optional 4G communication, and the housing is made of aluminum alloy (natural anodized). Dimensions: 252mm×137mm×35mm (customized for ZTD-12), power consumption: <2W, <4W, <5W respectively.

Order by 2PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.

There is €4.99 charge for delivery under €50 Orders. Additional charges will be imposed by our couriers for delivery to remote area, a surcharge may be levied to cover carriage to these areas.

Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.