Data Quality Report for Order ID: 187478
User ID: zeppetellol1    Date completed: 2017-08-29
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D081022.9 FKB/MET/M1 - Wind Speed data contain offset due to induced voltage fkbmetM1.b1 Suspect
 
DQR ID: D081022.9    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2007-03-01 00:00:00 2008-01-01 23:59:00 Suspect
Subject: FKB/MET/M1 - Wind Speed data contain offset due to induced voltage
Affected Datastreams: fkbmetM1.b1
Description The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s.
Measurements
  • wspd_arith_mean (Wind speed arithmetic mean)
  • wspd_vec_mean (Wind speed vector mean)