DQRID : D061206.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/04/2006180008/11/20061445Incorrect
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Subject:
NIM/AOS/M1 - Flow controller failure
DataStreams:nimaosccnM1.a1, nimaosauxM1.a1, nimaosM1.a1
Description:
Following a power outage at the site both a PID controller for the main sample flow as 
well as a circuit board on the reference nephelometer were inoperable. The PID controller 
was replaced on 5/18 and the neph circuit board was replaced on 6/22. On a site visit in 
August the mentor found the PID had not been programmed correctly and was reading erroneous 
flows. The actual flow was at 50% of the recorded flow. Because the sample flow is 
diluted by 50% this makes most if not all of the sample flow from 5/18 to 8/11 from the diluter.
Suggestions: 
Measurements:nimaosM1.a1:
  • Bbs_B_Dry_1um_Neph3W_1
  • Bs_R_Dry_10um_Neph3W_1
  • Bbs_R_Dry_10um_Neph3W_1
  • Bs_G_Dry_10um_Neph3W_1
  • P_Neph_Dry
  • Ba_G_Dry_10um_PSAP3W_1
  • T_NephVol_Wet
  • Ba_G_Dry_1um_PSAP3W_1
  • Bbs_R_Wet_1um_Neph3W_2
  • Ba_B_Dry_1um_PSAP3W_1
  • Bbs_G_Wet_10um_Neph3W_2
  • Bbs_B_Dry_10um_Neph3W_1
  • Bs_G_Wet_10um_Neph3W_2
  • Bs_B_Dry_10um_Neph3W_1
  • Ba_B_Dry_10um_PSAP3W_1
  • Bs_R_Wet_10um_Neph3W_2
  • Bbs_B_Wet_10um_Neph3W_2
  • T_NephInlet_Dry
  • RH_NephVol_Wet
  • RH_NephInlet_Dry
  • N_CPC_1
  • T_NephVol_Dry
  • Bbs_G_Dry_1um_Neph3W_1
  • Bbs_B_Wet_1um_Neph3W_2
  • P_Neph_Wet
  • Ba_R_Dry_1um_PSAP3W_1
  • Ba_G_Dry_10um_PSAP1W_1
  • Bbs_R_Dry_1um_Neph3W_1
  • Bs_G_Wet_1um_Neph3W_2
  • Ba_G_Dry_1um_PSAP1W_1
  • Bs_R_Dry_1um_Neph3W_1
  • Bs_B_Wet_1um_Neph3W_2
  • Bs_B_Wet_10um_Neph3W_2
  • Bbs_R_Wet_10um_Neph3W_2
  • Bs_G_Dry_1um_Neph3W_1
  • T_NephInlet_Wet
  • Bbs_G_Dry_10um_Neph3W_1
  • Bs_R_Wet_1um_Neph3W_2
  • RH_NephVol_Dry
  • Bbs_G_Wet_1um_Neph3W_2
  • Bs_B_Dry_1um_Neph3W_1
  • Ba_R_Dry_10um_PSAP3W_1
  • RH_NephInlet_Wet
more
nimaosauxM1.a1:
  • TrB
  • TrG
  • TrR
more
nimaosccnM1.a1:
  • CCN_ss_set
  • CCN_Q_sample
  • CCN_temp_unstable_flag
  • CCN_P_sample
  • CCN_T_sample
  • CCN_T_nafion
  • CCN_T_TEC1
  • CCN_T_TEC2
  • CCN_Temperature_Gradient
  • CCN_T_TEC3
  • CCN_ss_calc
  • CCN_UpperSizeLimit
  • CCN_ProportionalValveVoltage
  • CCN_dT_TEC3_TEC1_StdDev
  • CCN_T_OPC
  • N_CCN_bin_number
  • N_CCN
  • CCN_laser_current
  • CCN_Q_sheath
  • N_CCN_dN
  • CCN_T_inlet
  • CCN_FirstStageMonitorVoltage
more

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