3DATX parSYNC, User Manual

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The sampling will auto stop when the system has run up to the number of seconds set in step 2. When
the sampling is stopped, automatically or by user, the average voltage values for gases and PM sensors
are copied to the Zeroing Voltage cell in the “Calibration Settings” tab under the “Config” tab. Note that
values for all sensors are copied and thus, the zero air must be zero for all measured pollutants.
Zeroing state values are recorded at 1 hz in the test data file with the bag number column marked with
“Zeroing”.
After the system has been zeroed, you can proceed with recording test data. Remember to connect the
sampling line to the tail pipe or location of exhaust flow sampling point!
Please note – sudden significant change in values or when opacity zero value drops below 5 VDC
are indicative of cartridge reaching end of service life.
Zero air data recording (when warming up the parSYNC) should be reviewed regularly.
If the system was used to measure non-zero or polluted air before zeroing is attempted, it is
advised that the system be purged with zero air before conducting the zeroing steps outlined
above. The purge can be done by running clean air through the system for 10 seconds BEFORE you
hit “Zero Start”.