Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
12/01/1993 | 0000 | 02/02/1994 | 2359 | Incorrect |
Subject: | SGP/EBBR/E26 - Winds, SM2 Invalid data 10/10/93 - 2/2/94 |
DataStreams: | sgp30ebbrE26.b1, sgp5ebbrE26.b1, sgp15ebbrE26.b1 |
Description: | Beginning October 10, 1993 the EBBR system at E26, Cement, OK began to have problems with outputs from soil moisture sensor number 2 and the wind direction sensor. This situation also occured in early 1993 and was eliminated by replacing the soil moisture sensor (after replacing the wind direction sensor did not help). This time, replacing the soil moisture sensor did not help, but the problem has not re-occured since the wind direction sensor was replaced on February 2, 1994. During periods of bad data the wind direction output is a constant 135 degrees and soil moisture two is offscale. Invalid data for a constant wind direction of 135 degrees is: 30 minute: res_ws, wind_d, sigma_wd 15 minute: mv_wind_d 5 minute: res_ws, wind_d, sigma_wd. Invalid data for soil moisture 2 offscale is: 30 minute: sm2, c_shf2, cs2, ces2, g2, ave_shf, h, e 15 minute: r_sm2 5 minute: no data affected. Apparent cause of data loss, if known: Apparently an electronic problem in interfacing an intermittently malfunctioning wind direction sensor to the data acquisition system multiplexer, thereby affecting the other sensor (soil moisture 2) on that multiplexer pair. |
Suggestions: | |
Measurements: | sgp5ebbrE26.b1: more
sgp15ebbrE26.b1: more sgp30ebbrE26.b1: more |