DQRID : D160907.10
Start DateStart TimeEnd DateEnd Time
08/24/2016090008/29/20160831
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Subject:
ENA/CPC/C1 - New pump slightly under pressure
DataStreams:enaaoscpcfC1.b1, enaaoscpcfC1.a1, enaaoscpcfC1.00
Description:
Due to a pump failure, a different pump was used on the system.  The orifice pressure was 
lower with this additional pump and the system may have been slightly under the pressure 
required to maintain critical flow on the CPC's critical orifice. Flow rate measurements 
during this time show very little change in the output flow rate.
Suggestions: 
Use data with caution.
Measurements:enaaoscpcfC1.b1:
  • Optics temperature(optics_temp)
  • Flow setpoint(dilution_flow_setpoint)
  • Liquid level(liquid_level)
  • Calibrated aerosol flow as supplied by mentor(aerosol_flow_calibrated)
  • Flow read(dilution_flow_reading)
  • Dilution intercept(dilution_intercept)
  • Dilution flow valve position(dilution_valve_position)
  • Condensation temperature(condensation_temp)
  • OPC laser current(laser_current)
  • Cabinet temperature(cabinet_temp)
  • Nozzle pressure(nozzle_pressure)
  • Dilution slope(dilution_slope)
  • Liquid fraction available(fraction_full)
  • Ambient pressure(ambient_pressure)
  • Saturation temperature(saturation_temp)
  • Dilution correction factor(dilution_correction_factor)
  • Orifice pressure(orifice_pressure)
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enaaoscpcfC1.a1:
  • Aerosol concentration averaged over times to match N_CCN(concentration)
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enaaoscpcfC1.00:
  • (Raw data stream - documentation not supported)
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