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SOLRMAP Utah State Energy Program Cedar City Instrument Descriptions and Histories


Model Measurement
Notes (below)		 Units Install
Date		 Removal
Date		 Current
SN		 Current
CF
LI-200 Global Horizontal W/m2 07/13/2010 - PY65956 -10.99 W/m2/µA
Measured using a LICOR LI-200 Pyranometer mounted on an Irradiance Inc. Rotating Shadowband Radiometer (RSR). The RSR is mounted on a roof and the LI-200 sensor height is approx. 7 feet above roof level. The uncorrected value is for testing and troubleshooting purposes only. Voltage is measured across a 100 Ohm precision resistor in parallel to sensor output.
LI-200 Diffuse Horizontal W/m2 07/13/2010 - PY65956 -10.99 W/m2/µA
Measured using the above LI-200, when RSR band rotates every 30-seconds and blocks the sun. The uncorrected value is for testing and troubleshooting purposes only. Voltage is measured across a 100 Ohm precision resistor in parallel to sensor output.
(calc) Direct Normal W/m2 07/13/2010 - - FD = 1
Calculated using Global and Diffuse measurement. The uncorrected value is for testing and troubleshooting purposes only.
LI-200 Global Horizontal (secondary) W/m2 07/13/2010 - PY65958 -10.73 W/m2/µA
Measured using a LICOR LI-200 Pyranometer mounted next to the primary LI-200, but outside of the rotating shading band. Voltage is measured across a 100 Ohm precision resistor in parallel to sensor output.
CS215 Dry Bulb Temperature and Relative Humidity oC
%		 07/13/2010 - - N/A
Outside air temperature and relative humidity inside in a naturally aspirated radiation shield mounted on RSR pole below LICOR sensors.
034B Wind Speed and Wind Direction m/s
degrees		 07/13/2010 - - 0.799 m/s/Hz+0.2811m/s
712 o/mV-111 o
Measured by a MetOne 3-cup anemometer and vane mounted on a 3 meter pole on the top of a roof. Peak Wind Speed is also recorded, which is the maximum 3-sec anemometer reading during the 1-minute interval.
CS106 Station Pressure mBar 07/13/2010 - - 0.24 mBar/mV+500mBar
The station pressure is measured by a Vaisala sensor mounted inside weatherproof housing. This sensor is only measured every 15-minutes to conserve battery power.
(calc) Zenith Angle o 07/13/2010 - - -
Solar zenith angle calculated by RSR datalogger program.
(calc) Azimuth Angle o 07/13/2010 - - -
Solar azimuth angle calculated by RSR datalogger program.
- RSR Battery Voltage V 07/13/2010 - - -
The RSR Battery powers the datalogger and the shadowband, it is charged by a PV panel.
- CR800 Temperature oC 07/13/2010 - - -
Temperature of CR800 datalogger panel. Logger is mounted inside weatherproof enclosure.
Notes:
  • Data Sample rate is every 3 seconds with 1-minute average output.
  • The CR800 is a table based operating system, data is converted from table to array format after data collection, also any non-numeric values are converted to -99999.
  • The datalogger program runs using Greenwich Mean Time (GMT), data is converted to Mountain Standard Time (MST) after data collection.

[NREL] [MIDC] [USEP Cedar City]