DQRID : D141208.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/15/2009160008/03/20090000Suspect
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Subject:
SGP/CCN/C1 - CCN signal is low from possible leak and decline in laser power
DataStreams:sgpaosccnavgC1.c1, sgpaosccn100C1.a1, sgpaosccnavgC1.c2, sgpaosccnC1.a1, sgpaosccnC1.00
Description:
CCN was returned with new laser. Signal was unusually low and flow calibration had changed 
substantially. A leak is suspect as well as declining laser power as new laser was 
defective.
Suggestions: 
Signal is low and not trusted. Use with caution.
Measurements:sgpaosccnC1.a1:
  • CCN_FirstStageMonitorVoltage
  • CCN_ProportionalValveVoltage
  • CCN_ss_set
  • CCN_dT_TEC3_TEC1_StdDev
  • CCN_T_sample
  • CCN_P_sample
  • CCN_Q_sample
  • N_CCN_dN
  • CCN_temp_unstable_flag
  • CCN_Temperature_Gradient
  • N_CCN_bin_number
  • CCN_T_TEC1
  • CCN_T_TEC2
  • CCN_T_TEC3
  • N_CCN
  • CCN_ss_calc
  • CCN_T_OPC
  • CCN_laser_current
  • CCN_Q_sheath
  • CCN_T_inlet
  • CCN_UpperSizeLimit
  • CCN_T_nafion
more
sgpaosccnC1.00:
  • Raw data stream - documentation not supported
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sgpaosccn100C1.a1:
  • CCN_T_nafion
  • CCN_temperature_gradient
  • CCN_T_sample
  • CCN_super_saturation_calculated
  • CCN_first_stage_monitor_voltage
  • N_CCN_dN
  • CCN_P_sample
  • N_CCN_bin_number
  • CCN_t_read_TEC3
  • CCN_t_read_TEC2
  • CCN_t_read_TEC1
  • CCN_temp_unstable_flag
  • CCN_T_inlet
  • CCN_ss_set
  • N_CCN
  • CCN_temperature_std
  • CCN_Q_sample
  • CCN_proportional_valve_voltage
  • CCN_Q_sheath
  • CCN_laser_current
  • CCN_T_OPC
more
sgpaosccnavgC1.c2:
  • N_CCN_dN
  • N_CCN
  • N_CCN_std
  • N_CPC
  • supersaturation_calculated
  • column_temperature_gradient_measured_std
  • supersaturation_setpoint
  • droplet_size
  • column_temperature_gradient_setting
  • N_CPC_std
  • column_temperature_gradient_measured
more
sgpaosccnavgC1.c1:
  • N_CPC_std
  • column_temperature_gradient_setting
  • supersaturation_setpoint
  • N_CCN_std
  • column_temperature_gradient_measured_std
  • N_CCN_dN
  • column_temperature_gradient_measured
  • N_CCN
  • supersaturation_calculated
  • N_CPC
  • droplet_size
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