Kipp & Zonen CMA Series Instruction Manual

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Kipp & Zonen CMA Series Instruction Manual Manual pdf 33 page image

CMP/CMA series manualPage 32Appendix IV classification According to WMO Guide 1996Characteristics CMP 22 CMP 21 CMP 11CMA 11CMP 6CMA 6HighqualityGoodqualityModeratequalityISO 9060 classification SecondarystandardSecondarystandardSecondarystandard First class Secondarystandard First class SecondclassResponse time (95 percentresponse) 5 s 5 s 5 s 18 s < 15 s < 30 s < 60 sZero offset:(a) Response to 200 W/m2net thermal radiation(ventilated)(b) Response 5 K/h changein ambient temperature± 3 W/m2± 1 W/m2± 7 W/m2± 2 W/m2± 7 W/m2± 2 W/m2± 15 W/m2± 4 W/m2± 7 W/m2± 2 W/m2± 15 W/m2± 4 W/m2± 30 W/m2± 8 W/m2Resolution (smallest detectablechange) ± 1 W/m2 ± 1 W/m2 ± 1 W/m2 ± 1 W/m2 ± 1 W/m2 ± 5 W/m2 ± 10 W/m2Stability (change per year,percentage of full scale) < 0.5 < 0.5 < 0.5 < 1 ± 0.8 ± 1.5 ± 3.0Directional response of beamradiation(The range of errors caused byassuming that the normal incidenceresponsivity is valid for all directionswhen measuring, from any direction,a beam radiation whose normalincidence irradiance is 1000 W/m2 )± 5 W/m2 ± 10 W/m2 ± 10 W/m2 ± 20 W/m2 ± 10 W/m2 ± 20 W/m2 ± 30 W/m2Temperature response (percentageof maximum due to any change ofambient temperature within aninterval of 50 K)± 0.5-20 0C-+50 0C± 1-20 0C-+50 0C± 1-10 0C-+40 0C± 4-10 0C-+40 0C± 2 ± 4 ± 8Non-linearity (percentage deviationfrom the responsivity at 500 W/m2due to any change of irradiancewithin the range 100 to 1000 W/m2 )± 0.2 ± 0.2 ± 0.2 ± 1 ± 0.5 ± 1 ± 3Spectral sensitivity (percentage ofdeviation of the product of spectralabsorptance and spectraltransmittance from the correspondingmean within the range of 0.3 to 3 μm)± 2 ± 5 ± 10Tilt response (percentage deviationfrom the responsivity at 0° tilt,horizontal, due to change in tilt from0° to 90° at 1000 W/m2 irradiance)± 0.2 ± 0.2 ± 0.2 ± 1 ± 0.5 ± 2 ± 5Achievable uncertainty, 95 percentconfidence levelHourly totalsDaily totals 1 % 2 % 2 % 5 %3%2%8%5%20%10%

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