PFCI Instrument Descriptions and Histories


Model
Measurement
Notes (below)
Units
Install
Date
Removal
Date
Current
SN
Current
CF
LI-200 Global Horizontal (RSP) W/m2 02/15/2006 - PY17942 130.81 W/m2/mV
Measured using a LICOR LI-200 Pyranometer mounted on a Rotating Shadowband Pyranometer (RSP).
LI-200 Diffuse Horizontal (RSP) W/m2 09/29/2006 - PY17942 130.81 W/m2/mV
Measured using the above LI-200, when shadowband rotates every minute and blocks the sun.
(calc) Direct Normal (RSP) W/m2 09/29/2006 - - -
Calculated using the RSP's Global and Diffuse measurement.
LI-200 Global Horizontal (collector plane) W/m2 02/01/2006 - ? 200.0 W/m2/mV
Measured using a LICOR LI-200 Pyranometer mounted on the plane of tracking collector.
(calc) Direct Normal (Erbs') W/m2 02/01/2006 - - -
Calculated using Erbs' Correlation using the RSP's Global measurement.
- Temperature oC 02/01/2006 - - -
Outside air temperature.
- Relative Humidity oC 02/01/2006 - - -
Outside relative humidity.
- Wind Speed m/s 02/01/2006 - - 0.75 m/s/mV + 0.2 m/s
The average and peak wind speeds recorded by anemometer.
- Wind Direction o from N 02/01/2006 - - 0.142 o/mV
The average wind direction, standard deviation, and the direction at the recorded peak wind speed.
- CR10X Battery Voltage VDC 02/01/2006 - - -
CR10X data logger battery voltage.
Notes:
  • Data Sample rate is 3-seconds for RSP (in Table 2) and 30-seconds for others (in Table 1), with 1-min average outputs.
  • Data prior to February 1, 2006 is 10-minute average outputs.
  • Data prior to July 10, 2007 were collected with the incorrect latitude of 33.43oN and longitude of 112.02oW programmed in the RSP logger program. This discrepancy may create a small error in the calculated Direct Normal.

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