DQRID : D170421.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/13/2017204604/14/20171558Incorrect
04/15/2017165904/17/20171602Incorrect
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Subject:
ASI/CPC/M1 - Temperature difference causing high particle number concentrations
DataStreams:asiaoscpcuM1.b1, asiaoscpcuM1.00, asiaoscpcuM1.a1
Description:
The thermistor that maintains the setpoint condenser temperature malfunctioned giving 
erroneous readings.  The condenser was colder than the readout.  The increased temperature 
difference between the condenser and the saturator caused homogeneous nucleation of butanol 
vapor, evidenced by very high particle number concentrations.
Suggestions: 
Do not use data from this period
Measurements:asiaoscpcuM1.b1:
  • condensation_temp
  • concentration
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asiaoscpcuM1.a1:
  • condensation_temp
  • concentration
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asiaoscpcuM1.00:
  • Raw data stream - documentation not supported
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