TSI Instruments SMPS 3938 User Manual

Instrument Operation 5-45
Impactor Differential Pressure
The differential pressure sensor has some sensitivity to temperature. The
sensor should therefore be zeroed occasionally. It is also good practice to
zero the pressure sensor before you perform an impactor calibration. To
zero the differential pressure sensor, follow these instructions:
1. Disconnect the DMA and the classifier from any flow sources to ensure
zero flow through the classifier inlet.
2. From the classifier Setup screen > Calibration > User Calibration >
the dP tab. Touch Zero dP. You will see a message telling you that
you have set the dP offset.
Figure 5-30
Electrostatic Classifier User Calibration Screen–dP Tab
(continued on next page)

TSI Instruments SMPS 3938 Specifications

General

Brand	TSI Instruments
Model	SMPS 3938
Category	Laboratory Equipment
Language	English