DQRID : D160707.6
Start DateStart TimeEnd DateEnd Time
06/30/2016123007/13/20161745
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Subject:
SGP/NEPHELOMETER/C1 - Condensation caused incorrect relative humidity
DataStreams:sgpaosnephwet1mC1.b1, sgpaosnephdry1mC1.b1, sgpaosnephwetC1.a1, sgpaosnephdryC1.b1,
sgpaosnephdryC1.a1, sgpaosnephwetC1.b1
Description:
WetNeph inlet RH was incorrect due to problems with condensation. Sensor was removed and 
dried out.
Suggestions: 
Use Vaisala sensor at output of instrument.
Measurements:sgpaosnephdry1mC1.b1:
  • Temperature, reference nephelometer inlet(T_Neph_Inlet_Dry)
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sgpaosnephwet1mC1.b1:
  • Temperature, reference nephelometer inlet(T_Neph_Inlet_Wet)
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sgpaosnephwetC1.b1:
  • Relative humidity at humidified nephelometer inlet(RH_Neph_Inlet_Wet)
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sgpaosnephwetC1.a1:
  • Relative humidity at humidified nephelometer inlet(RH_Neph_Inlet_Wet)
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sgpaosnephdryC1.a1:
  • Nephelometer-specific flags(f2_flags)
  • Aerosol total light scattering coefficient, nominal blue wavelength at dry or
    reference RH(Bs_B_Dry_Neph3W)
  • Impactor setting in terms of aerodynamic diameter cut off(impactor_setting)
  • Relative humidity, inside reference nephelometer(RH_Neph_Vol_Dry)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10um(Bbs_B_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, Ref. Humidograph nephelometer blue
    channel, 1 um particle diameter(Bs_B_Dry_1um_Neph3W_1)
  • Temperature, inside nephelometer(T_Neph_Vol_Dry)
  • Pressure inside reference nephelometer(P_Neph_Dry)
  • Temperature at reference nephelometer inlet(T_NephInlet_Dry)
  • Aerosol total light scattering coefficient, ref. humidograph nephelometer green
    channel, 1 um particle diameter(Bs_G_Dry_1um_Neph3W_1)
  • Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
    at dry or reference RH(Bbs_G_Dry_Neph3W)
  • Aerosol total light scattering coefficient, red channel, 10 um particle size(Bs_R_Dry_10um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, reference
    nephelometer red channel, 1 um particle diameter(Bbs_R_Dry_1um_Neph3W_1)
  • Aerosol backwards-hemispheric light scattering coefficient, red channel, 10um(Bbs_R_Dry_10um_Neph3W_1)
  • Back-scattering coefficient, green wavelength, low RH, 10 um size cut(Bbs_G_Dry_10um_Neph3W_1)
  • Aerosol total light scattering coefficient, reference nephelometer green
    channel, 10 um particle diameter(Bs_G_Dry_10um_Neph3W_1)
  • Temperature, reference nephelometer inlet(T_Neph_Inlet_Dry)
  • Aerosol total light scattering coefficient, nominal green wavelength at dry or
    reference RH(Bs_G_Dry_Neph3W)
  • Relative humidity, reference nephelometer inlet(RH_NephInlet_Dry)
  • Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
  • Aerosol total light scattering coefficient, nominal red wavelength at dry or
    reference RH(Bs_R_Dry_Neph3W)
  • Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
    size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
  • Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
    dry or reference RH(Bbs_R_Dry_Neph3W)
  • Aerosol total light scattering coefficient, blue channel, 10 um size cut,
    reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
  • Relative humidity at reference nephelometer inlet(RH_Neph_Inlet_Dry)
  • Temperature inside reference nephelometer(T_NephVol_Dry)
  • Relative humidity inside reference nephelometer inlet(RH_NephVol_Dry)
  • Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
    at dry or reference RH(Bbs_B_Dry_Neph3W)
  • Aerosol total light scattering coefficient, reference nephelometer red channel,
    1 um particle diameter(Bs_R_Dry_1um_Neph3W_1)
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sgpaosnephdryC1.b1:
  • Relative humidity at reference nephelometer inlet(RH_Neph_Inlet_Dry)
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