MIDC/Data Quality Statements
Total Records: 11, displaying 1-11

R#SiteSerial NumberMeasurementStart DateStart TimeEnd DateEnd TimeData Quality Statement
1SRRL BMSDownwelling PIR03/02/201313:06:0003/02/201318:24:00Due to a scheduled NREL power outage, to upgrade campus power capacity, The following BMS instruments were not pointing at the sun during this time: Direct CH1, NIP #2, NIP #1, LI-201, NIP RG780, CUVA2, CUVB2, TWC; and the following instruments were un-shaded: Diffuse 8-48, PSP, CM22, CUV4, PIR, CG4. The Sci-Tec tracker for these insruments are protected by UPS, however the battery depleted at 13:06 MST (the power outage started at 8:06 MST)
2SRRL BMSDownwelling PIR05/07/201105:55:0005/09/201107:58:00There was a planned power outage for SRRL construction activities that started at 5:18 MST. Unfortunately, the backup generator provided to SRRL was providing bad power to the UPS powering the Sci-Tec trackers, therefore the UPS failed at 5:55 MST. Unfortunately, when normal AC power was restored at 11:45 MST, the Sci-Tec trackers had lost all their configuration due to UPS cycling on and off during the outage, therefore were not tracking. The tracker settings were restored on May 9 at 7:58 MST. The following BMS instruments were not pointing at the sun during this time: Direct CH1, NIP #2, NIP #1, LI-201, NIP RG780, CUVA2, CUVB2, TWC; and the following instruments were un-shaded: Diffuse 8-48, PSP, CM22, CUV4, PIR, CG4
3SRRL BMSDownwelling PIR05/27/201018:00:0005/28/201012:15:00Due to improper mounting of the replacement CH1 s/n 080033 the Sci-tec tracker was not tracking properly due to collision with the CH1 against tracker. The following BMS instruments were not pointing at the sun: Direct CH1, NIP2, CUVA2, & CUVB2 and the following instruments were unshaded: 8-48, PSP, PIR.
4SRRL BMSDownwelling PIR12/09/200912:11:0012/09/200914:22:00Due to a power outage at NREL, followed by bad power, the SRRL tracker UPS shutdown. The following BMS instruments were not pointing at the sun: Direct CH1, NIP1, NIP2, NIP-RG780, LI201, TWC500, CUV4; and the following instruments were unshaded: 8-48, CM22, PSP, CUV4, PIR, CG4.
5SRRL BMSDownwelling PIR11/15/200814:02:0011/15/200814:32:00Due to a planned power outage at SRRL, the following BMS instruments were unshaded: Diffuse 8-48, CM22, PSP, CUV4, DW-PIR, DW-CG4.
6SRRL BMS31194F3Downwelling PIR05/25/200610:50:0005/25/200611:10:00Sci-Tec tracker #1 tracker was down due to power shutdown for installation of new SRRL equipment lift. The following instruments were UNSHADED: Diffuse 8-48, Diffuse PSP, and the Downwelling PIR.
7SRRL BMS31194F3Downwelling PIR01/11/200614:16:0001/31/200623:59:00The K0 factor was mistakenly entered as -4.8 (instead of the correct -4.58) in the datalogger program. This creates a very minor 0.22 W/m^2 bias in the irradiance levels.
8SRRL BMS31192F3Downwelling PIR07/23/200510:16:0007/23/200517:22:00Sci-Tec tracker #1 was down due to a scheduled NREL power outage on 7/23/2005 at 5:33 MST. The following instruments were UNSHADED: Diffuse 8-48, Diffuse PSP, and the Downwelling PIR.
9SRRL BMS31192F3Downwelling PIR07/10/200509:30:0007/10/200523:59:00The SRRL BMS Sci-Tec Tracker #1 was hung up on cables during this time. The following instruments were UNSHADED: Diffuse 8-48, Diffuse PSP and the PIR.
10SRRL BMSDownwelling PIR10/30/200304:00:0011/07/200321:00:00A problem with the instrument cable was causing the PIR Case Temperature to read approx. 2°C high, which caused the downwelling infrared to read about 50 W/m² high. The downwelling IR is also used for calculating the following: Net Radiation (Eppley), Net Infrared PIR (atmos), and the Diffuse PSP (vent/thermal corrected).
11SRRL BMSDownwelling PIR01/14/199911:15:0001/20/199910:50:00Downwelling and Upwelling Infrared (PIRs) were not operating correctly during this time frame, this data cannot be fixed.