Soiling Measurement Product Guide
The following guide can help you determine which soiling measurement system is best for you. Each system has different advantages with respect to maintenance requirements, data quality, and cost.
Maintenance requirements are dependent on what you choose for your clean reference device. You may select from washing a module, washing a reference cell, or no washing at all.
Data quality is a crucial factor to consider when selecting a system. Non-uniform soiling and rear-side irradiance are the primary factors that affect data quality in these systems.
To learn more about how non-uniform soiling and rear-side irradiance can affect soiling measurement, visit the Related Articles at the bottom of this page.
System Description:
Washing Required?
Measures Non-Uniform Soiling?
RDE300i Soiled
RDE300i Clean
Module-Module: compares soiled module to manually-washed module
Washing Required?
Yes,
Module
Measures Non-Uniform Soiling?
Yes
RDE300i Soiled
Mars Soiled
RC22 Soiled
*Module-Cell + Optical: compares soiled module power to soiling-corrected cell
Washing Required?
No
Measures Non-Uniform Soiling?
Yes
RDE300i Soiled
RC22 Clean
*Module-Cell: compares soiled module to manually-washed cell
Washing Required?
Yes,
Cell
Measures Non-Uniform Soiling?
Yes
Mars Soiled
Optical: measures soiling with optical technique
Washing Required?
No
Measures Non-Uniform Soiling?
No
RC22 Soiled
RC22 Clean
*Cell-Cell: compares soiled cell to manually-washed cell
Washing Required?
Yes,
Cell
Measures Non-Uniform Soiling?
No
*For bifacial modules, add two RC22’s to your system for rear-side irradiance measurement.
