Analysis of mesh screens for outdoor i-v curve measurements of pv modules at several irradiance levels

•The mesh calibration achieved the required precision with minimal sample size.•The transmissivity of mesh screens was measured with <1 % error with 5–7 samples.•Layer arrangement in mesh screens affected their transmissivity by up to 0.3%.•The dependence between layers influenced mesh screen transmissivity by up to 1%.•Interlayer dependence and arrangement must be considered to achieve <2 % error.