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7.2
Test Data File Format
The parSYNC® software creates a comma-separated values (CSV) file at the time a connection is
established between the software and the hardware. The software appends a row of data for each
second of measurement while it is in “Start” or “Zero” modes of operation. The data is added to the file
real-time, so if the test is interrupted or the connection is broken, the data up to that point is already
saved to the file. In any other state, such as “Pause” mode, data is not appended to the file.
The test data file contains the following parameters:
Column
Name
Description
Timestamp
Number of seconds elapsed since 12:00:00 AM
Date
Date, MM/DD/YYYY
Time
Time, HH:MM:SS AM/PM
Bag#
Bag number from the Bag control in the GUI
Scattering
(V)
Voltage output from the scattering sensor after correction for zeroing, volts
Ionization
(V)
Voltage output from the ionization sensor after correction for zeroing and a sign change,
volts
Opacity (V)
Voltage output from the opacity sensor after correction for zeroing and a sign change,
volts
PM (µg/m3) Particulate matter mass concentration, µg/m3
PN (#/cm3) Particle number concentration, number/cm3
Cb
Baseline correction for the PSN equation
Cs
Coefficient for the scattering sensor part of the PSN equation
Ci
Coefficient for the ionization sensor part of the PSN equation
Co
Coefficient for the opacity sensor part of the PSN equation
PSN
Particle Synchronization Number, a simplified metric useful for pass/fail testing based on
the level of particle emissions
PSN_limit
User defined PSN limit used to evaluate the pass/fail status
Pass/Fail
Pass or Fail status for a given second based on PSN vs PSN_limit values
NO
2
(V)
Voltage output from the NO
2
sensor after correction for zeroing, volts
NO
2
(ppm)
NO
2
concentration, ppm
NO (V)
Voltage output from the NO sensor after correction for zeroing, volts
NO (ppm)
NO concentration, ppm
CO
2
(V)
Voltage output from the CO
2
sensor after correction for zeroing, volts
CO
2
(%)
CO
2
concentration, %
CO (V)
Voltage output from the CO sensor after correction for zeroing, volts
CO (%)
CO concentration, %
Temperature
(deg C)
Temperature inside the parSYNC® miniPEMS enclosure, in degree Celsius
ErrorCode
Code for data acquisition error. Zero means no error.
Scattering
(Vraw)
Voltage output from the scattering sensor without any correction, volts
Ionization
(Vraw)
Voltage output from the ionization sensor without any correction, volts
Summary of Contents for parSYNC
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