Irradiance Inc. RSP v2 Instrument Descriptions and Histories


Model
Measurement
Notes (below)
Units
Install
Date
Removal
Date
Current
SN
Current
CF
LI-200 Global Horizontal W/m2 06/19/2007 - PY37627 10.35 W/m2/mV
Measured using a LICOR LI-200 Pyranometer.
LI-200 Diffuse Horizontal W/m2 06/19/2007 - PY37627 10.35 W/m2/mV
Measured using the above LI-200, when band rotates every 30-seconds and blocks the sun.
(calc) Direct Normal W/m2 06/19/2007 - - FD = 1.0
Calculated using Global and Diffuse measurement.
CSI-107 Temperature oC 06/19/2007 - 10755-153 -
Outside air temperature
(calc) Est. Pressure mBar 06/19/2007 - - -
Estimated Station Pressure.
(calc) Zenith Angle o 06/19/2007 - - -
Solar zenith angle calculated by RSP datalogger program.
(calc) Azimuth Angle o 06/19/2007 - - -
Solar azimuth angle calculated by RSP datalogger program.
(calc) Airmass - 06/19/2007 - - -
Airmass (optical) and airmass (pressure corrected) calculated by RSP datalogger program.
- RSP Battery Voltage V 06/19/2007 - - -
The RSP Battery powers the datalogger and the shadowband, it is charged by a PV panel.
- CR800 Temperature oC 06/19/2007 - - -
Temperature of CR800 datalogger panel.
- Error Flag counts 07/09/2007 - - -
A non-zero value indicates a problem with the RSP and counter is reset prior to each scan. Error codes (which are additive) are as follows:
Error ConditionCode
Batt_Volt < 11.51
Batt_Volt > 14.752
Rot_Count > 28804
Panel_Temp_C > +508
Panel_Temp_C < -2016
No_Well_count > 20032
(calc) Direct Normal (Bird Estimated) W/m2 07/24/2007 - - -
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 Mountain Standard Time (MST) after datacollection.
  • The Irradiance RSP cleaning maintenance history is available.
  • Known instrument problems can be found in the Data Quality Statements (DQS) database.

[NREL] [MIDC] [SRRL Irrad. RSP2]