Wiki source code of CNR4_CalculationNotes

Last modified by Michael Sibayan on 2022/05/03 16:48

author	version	line-number	content
		1	\|Sensor Code:\|CNR4
		2	\|Sensor:\|CNR4 from Kipp-Zonen (sold by Campbell Scientific)
		3	\|Measurement:\|Global and reflected radiation intensity
		4
		5	\|Output 1:\|Volts\|\|Range 1:\|0 to 0.015
		6	\|Output 2:\|Volts\|\|Range 2:\|0 to 0.015
		7	\|Output 3:\|Volts\|\|Range 3:\|-0.005 to 0.005
		8	\|Output 4:\|Volts\|\|Range 4:\|-0.005 to 0.005
		9	\|Output 5:\|Resistance\|\|Range 5:\|80 to 130
		10	\|Output 6:\|Incoming shortwave intensity (Watts/m^2) = {{formula fontSize="SMALL"}}\frac{Output1}{ka}*1000000{{/formula}}\|\|Range 6:\|0 to 1000
		11	\|Output 7:\|Outgoing shortwave Intensity (Watts/m^2) = {{formula fontSize="SMALL"}}\frac{Output2}{kb}*1000000{{/formula}}\|\|Range 7:\|0 to 400
		12	\|Output 8:\|Temperature (K) = {{formula fontSize="SMALL"}}\frac{-a+\sqrt{a^2-4b(1-\frac{Output5}{Ro})}}{2b}+273.15{{/formula}}\|\|Range 8:\|220 to 335
		13	\|Output 9:\|Incoming long wave intensity (Watts/m^2) = {{formula fontSize="SMALL"}}\frac{Output3}{kc}1000000 + (5.67 10^{-8} * output8^4){{/formula}} \|\|Range 9:\|-150 to 0
		14	\|Output 10:\|Outgoing long wave intensity (Watts/m^2) = {{formula fontSize="SMALL"}}\frac{Output4}{kc}1000000 + (5.67 10^{-8} * output8^4){{/formula}} \|\|Range 10:\|-25 to 25
		15
		16	ka, kb, kc, and kd are the four calibration coefficients assumed to be in microvolts per W/m^2
		17
		18	Pt-100 RTD has a temperature relation approximated by theCallendar-Van Dusen equation. A =3.908x10^-3; B = -5.801910^-7; C = -4.273510^-12; Ro = 100; for the DIN standard RTD used in the CNR4.
		19	Temperature formula is only valid for T > 272.15 (K)
		20	A numeric approximation is used for T < 272.15 (K)
		21
		22	{{velocity}}
		23	#if ($hasAdmin)
		24	[[go to page>>$doc.getFullName()]]
		25	#end
		26	{{/velocity}}