MIDC/Data Quality Statements
Total Records: 25, displaying 1-25

R#	Site	Serial Number	Measurement	Start Date	Start Time	End Date	End Time	Data Quality Statement
1	BMS		Direct CH1	02/11/2024	06:01:00	02/11/2024	13:27:00	Snow was packed in front of the CHP1-1 window during this time. However data was substituded with the CHP1-2 which was free of snow.
2	BMS		Direct CH1	09/29/2023	12:40:00	09/29/2023	13:55:00	Due to an NREL-wide power outage caused by Xcel Energy, The following BMS instruments were not pointing at the sun during this time: Direct CHP-1, sNIP, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, CM22-2, PIR. CHP1 Data was corrected on 10/5/2023 by subsituting Diffuse with calibrated RSR Diffuse (calibrated by BMS for the 2 hours prior), then re-calculating Direct using BMS Global CMP22 and calibrated RSR Diffuse.
3	BMS		Direct CH1	08/22/2023	13:24:00	08/22/2023	15:46:00	Due to BMS south sci-tec failure, The following BMS instruments were not pointing at the sun during this time: Direct CHP-1, sNIP, MS-57, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, CM22-2, PIR. However automatic substitution was enabled for the CHP1-1, sNIP, 8-48, and CM22-2.
4	BMS		Direct CH1	08/21/2022	05:21:00	08/21/2022	11:15:00	Due to BMS south sci-tec failure, The following BMS instruments were not pointing at the sun during this time: Direct CHP-1, sNIP, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, CM22-2, PIR. Since the middle sci-tec was down (due to collision with south scitec); data was corrected on 9/14/2022 by subsituting Diffuse 8-48 and CM22-2 with RSR Diffuse, then recalating Direct CHP1-1 and sNIP using BMS Global CMP22 and RSR Diffuse.
5	BMS		Direct CH1	08/20/2022	11:56:00	08/20/2022	23:59:00	Due to BMS south sci-tec failure, The following BMS instruments were not pointing at the sun during this time: Direct CHP-1, sNIP, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, CM22-2, PIR. However automatic substitution was enabled for the CHP1-1, 8-48, and CM22-2.
6	BMS		Direct CH1	06/22/2022	16:53:00	06/23/2022	07:17:00	Due to BMS south sci-tec failure, The following BMS instruments were not pointing at the sun during this time: Direct CHP-1, sNIP, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, CM22-2, PIR. However automatic data substitution was enable for the CHP1-1, 8-48, and CM22-2.
7	BMS		Direct CH1	05/18/2020	13:03:00	12/15/2021	19:31:00	DATA CORRECTED on 12/17/2021: Irradiances were increased by 0.675% due to revised BORCAL report for all BMS shortwave radiometers calibrated in 2020 and 2021.
8	BMS	080009	Direct CH1	03/24/2016	00:00:00	03/24/2016	23:59:00	There was an alignment problem on one side of the sci-tec tracker from sunrise to 10:10 MST that caused the CHP1 and Direct TUVR to read low. Data for the CHP1 (primary) was replaced with good data from the CHP1 (secondary) for the entire day.
9	BMS	010256	Direct CH1	12/24/2014	11:20:00	12/27/2014	14:45:00	On 24 Dec, contractors bumped into the side of the Sci-Tec tracker mount which sent the Direct CH1, Direct TUVR, and Direct CUVB2 slightly out of alignment. Data is low and saw tooth shaped during this time due to misalignment. This data was corrected on 31-Dec-2014, by replacing CH1 data with the EKO MS-56.
10	BMS		Direct CH1	12/28/2013	11:55:00	12/28/2013	15:59:00	Due to a scheduled NREL power outage, to upgrade campus electrical infrastructure, The following BMS instruments were not pointing at the sun during this time: Direct CH1, NIP #2, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, PSP, PIR. The South Sci-Tec tracker for these instruments are protected by UPS, however the battery depleted at 11:55 MST (the power outage started at 6:46 MST)
11	BMS		Direct CH1	12/21/2013	10:30:00	12/21/2013	16:22:00	Due to a scheduled NREL power outage, to upgrade campus electrical infrastructure, The following BMS instruments were not pointing at the sun during this time: Direct CH1, NIP #2, CUVA2, CUVB2, TUVR; and the following instruments were un-shaded: Diffuse 8-48, PSP, PIR. The South Sci-Tec tracker for these instruments are protected by UPS, however the battery depleted at 10:30 MST (the power outage started at 7:00 MST). Data for the Direct CH1 was replaced with data from the SRRL Irradiance Inc RSR Direct Normal on 5/14/2014.
12	BMS	010256	Direct CH1	05/23/2013	08:21:00	07/29/2013	10:00:00	During this time the CH1 data was substituted with the BMS NIP S/N 31137E6 (by patching the signal cable to the logger), because the CH1 was removed from service so that it could be sent to Kipp & Zonen Delft for repair. Factory repair included repainting the black surface of the element, installing a body connector, sealing, and calibration. The instrument was then calibrated in NREL/BORCAL 2013-03. Note: From the period of 9-10 MST (completely overcast) on 7/29/2013, no data is present due to phantom troubleshooting.
13	BMS		Direct CH1	03/02/2013	13:06:00	03/02/2013	18:24:00	Due 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 instruments are protected by UPS, however the battery depleted at 13:06 MST (the power outage started at 8:06 MST). Data for the 8-48 was reconstructed on March 5, using the direct measurement from the SRRL RSR2, which uses a LICOR LI-200 s/n PY69225.
14	BMS	010256	Direct CH1	11/07/2011	11:30:00	11/07/2011	15:39:00	The CH1 signal became a tad noisy around 8:00 am, then got worse around 11:30 am and was causing a large positive bias. The noise was again due to the signal cable where it enters the body of the instrument. The strain relief was loosened and the cable was allowed to slide out a tad and then the strain relief was tightened which seemed to fix the noise and bias problem.
15	BMS		Direct CH1	05/07/2011	05:55:00	05/09/2011	07:58:00	There 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 SRRL BMS Direct CH1 was not pointing at the sun during this time, however data for the CH1 was reconstructed on May 16, using the CH1 instrument (s/n 060461; calibrated on 2010-05-23) installed at the NREL Outdoor Test Facility (OTF/RMIS).
16	BMS		Direct CH1	04/15/2011	06:43:00	04/15/2011	06:50:00	There was a planned power outage for SRRL construction activities that started at 6:11 MST. Unfortunately, the UPS powering the Sci-Tec trackers failed due to bad/old batteries at 6:43 MST. The following BMS instruments were not point at the sun for this brief period of time: CH1, NIP #2, NIP #1, LI-201, NIP RG780.
17	BMS	010256	Direct CH1	09/20/2010	17:00:00	03/31/2011	12:46:00	The original SRRL BMS CH1 S/N 010256 was returned to service on 8/2/2010. Instrument was resealed and calibrated in BORCAL 2010-02. However the instrument now exhibits a very occasional spiking problem. It only happens at night (or when there is zero irradiance). The source of the noise was later found to be at the base of the instrument where the cables enters the body. The strain relief was tightened which seemed to fix the noise problem.
18	BMS	080033	Direct CH1	05/27/2010	18:00:00	05/28/2010	12:15:00	Due 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. Therefore the CH1 was not pointing at the sun during this time. The data was later corrected on June 30, 2011, by replacing the CH1 data with the BMS NIP#1 during this time.
19	BMS	010256	Direct CH1	05/24/2010	11:00:00	05/27/2010	10:33:00	There is some moisture inside the CH1. If there is sudden environmental change, such as a temperature drop, condensation may form inside the dome (and then dissipate after a short time). This causes reduced irradiance readings, as observed on May 24 from 11:15 to 12:45 MST. After opening the desciant chamber a large amount of water flowed out. The unit was removed from service and replaced with a spare (s/n 080033) on May 27 @ 10:08 MST. Calibration factor was updated in logger program at 10:32 MST on May 27.
20	BMS	010256	Direct CH1	12/09/2009	12:11:00	12/09/2009	14:22:00	Due 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.
21	BMS	010256	Direct CH1	11/15/2008	14:02:00	11/15/2008	14:32:00	Due to a planned power outage at SRRL, the following BMS instruments were not pointing at the sun: Direct CH1, NIP1, NIP2, LI201, TWC500, CUV4.
22	BMS	010256	Direct CH1	07/07/2007	00:00:00	07/09/2007	07:00:00	The SRRL BMS Sci-Tec Tracker #1 shading arm was bent out of position. The CH1 was not pointing at the sun properly during this time.
23	BMS	010256	Direct CH1	05/25/2006	10:50:00	05/25/2006	11:10:00	Sci-Tec tracker #1 tracker was down due to power shutdown for installation of new SRRL equipment lift. The following instruments were NOT pointing at the SUN: NIP #2, CH1, TUVR.
24	BMS	010256	Direct CH1	07/23/2005	10:16:00	07/23/2005	17:22:00	Sci-Tec tracker #1 was down due to a scheduled NREL power outage on 7/23/2005 at 5:33 MST. The following instruments were NOT pointing at the SUN: NIP #2 and CH1.
25	BMS	010256	Direct CH1	07/10/2005	09:30:00	07/11/2005	07:19:00	The SRRL BMS Sci-Tec Tracker #1 was hung up on cables and the tracker arm was bent out of position. The CH1 was not pointing at the SUN during this time.