Casella CEL Microdust Pro real time dust monitor - Manual (Page 22)

MicroDust Pro Aerosol Monitoring System
22 Casella CEL
Buzzer Enable the buzzer to hear a short tone when you press any key.
Setting the serial communications
Connection between the MicroDust Pro instrument and a PC is through a serial
(RS232) communications link.
Figure 12. Setting the serial communications
3.3 Calibration
Before you make any measurements with the MicroDust Pro you should
confirm that it is set correctly for zero and that its span control (sensitivity) is
adjusted correctly.
To gain optimal measurement accuracy you should also perform a user
calibration to correct the instrument for the type of particulates to be measured.