MIDC: Oak Ridge National Laboratory RSR2 Instrumentation

Oak Ridge National Laboratory Instrument Descriptions and Histories

Model	Measurement Notes (below)	Units	Install Date	Removal Date	Current SN	Current CF
LI-200	Global Horizontal	W/m²	09/12/2007	-	PY56911	10.2 W/m²/mV
	Measured using a LICOR LI-200 Pyranometer mounted on an Irradiance Inc. Rotating Shadowband Radiometer (RSR). RSR mounted on the roof of a two story building (approx 33 feet tall); LI-200 sensor height is approx. 39.5 feet above ground level.
LI-200	Diffuse Horizontal	W/m²	09/12/2007	-	PY56911	10.2 W/m²/mV
	Measured using the above LI-200, when RSR band rotates every 30-seconds and blocks the sun.
(calc)	Direct Normal	W/m²	09/12/2007	-	-	FD = 1.0
	Calculated using Global and Diffuse measurement.
CS215	Dry Bulb Temperature and Relative Humidity	^oC	09/12/2007	-	-	N/A
	Outside air temperature and relative humidity inside in a naturally aspirated radiation shield mounted approx. 37.5 feet above ground level on roof.
03001	Wind Speed and Wind Direction	m/s	09/12/2007	-	-	0.75 m/s/Hz+0.2m/s 355 ^o/mV
	Measured by an RM Young 3-cup anemometer and vane is mounted approx 42 feet above ground level on roof. Peak Wind Speed is also recorded, which is the maximum 5-sec anemometer reading during the 1-minute interval.
TB4	Precipitation Gauge (tipping bucket)	mm	10/22/2007	-	-	0.254 mm/count
	The Hydrological Services TES525 tipping bucket precipitation gauge is mounted approx. 38.5 feet above ground level on the roof. The accumulated daily precipitation is also recorded.
(calc)	Est. Pressure	mBar	09/12/2007	-	-	-
	The station pressure is calculated by the RSR datalogger program. This estimation is based on the site elevation and air temperature.
-	RSR Battery Voltage	V	09/12/2007	-	-	-
	The RSR Battery powers the datalogger and the shadowband, it is charged by a PV panel.
-	CR800 Temperature	^oC	09/12/2007	-	-	-
	Temperature of CR800 datalogger panel.
(calc)	Direct Normal (Bird Estimated)	W/m²	09/12/2007	-	-	-
	Estimated Direct Normal using the Bird Clear Sky Model
Notes: Data Sample rate is every 5 seconds with 1-minute average output. The CR800 is a table based operating system, data is converted from table to array format after datacollection, also any non-numeric values are converted to -99999. The datalogger program runs using greenwich mean time (GMT), data is converted to Eastern Standard Time (EST) after datacollection.

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