TSI Instruments SIZER 3321 - Page 82

C-18 Model 3321 Aerodynamic Particle Sizer
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Spectrometer
RPI—Read Inlet Pressure
Reads the current absolute inlet pressure in millibars.
Example Response
RPB 1013.3
RPS—Read Sheath Delta P
Reads the change in pressure across the sheath flow orifice in Pascals.
Example Response
RPS 117.29
RPT—Read Total Delta P
Reads the change in pressure across the nozzle flow orifice in Pascals.
Example Response
RPT 130.72
RQA—Read Aerosol Sample Flow
Reads the aerosol sample flow rate in liters per minute (L/min). This is total
flow rate minus sheath flow rate.
Example Response
RQA 1.04
RQS—Read Sheath Flow
Reads the sheath flow rate in liters per minute (L/min).
Example Response
RQS 3.96
RQT—Read Total Flow
Reads the total flow rate in liters per minute (L/min).
Example Response
RQT 5.02