3M 3MTM 用户手册

Overview of running measurements

 Quick Help List: typical gas, particulates,or air quality measuring overview

1. Turn the EVM on and check the battery power. 

2. Reset/Clear memory, if necessary (Start\File System menu).

•  This will clear out data history before your logging begins to ensure you

have sufficient memory space.

3.  Set-up your session parameters either in 3M

TM

 Detection Management Software (DMS)

     or via the instrument’s Setup screen.

4.  Verify the time and date is set correctly (Setup\Time-Date menu). 

5. Calibrate each sensor/parameter via the Calibration screen.

6. Place the EVM in a specific location for area monitoring.

7. Press the         key to Start logging. 

8. When you are ready to end your logging, press         key.

9. Review your results either on the instrument (via the File System screen) or 

    download to DMS for further analysis (graphs/charts, saving and printing).

Particulate Measurements

1.  To change particulate settings select: Setup\Particulate.

2. Particulate screen appears and includes the following adjustable fields:

•  Particulate field (enable/disable pump collection), Profile field (applying a

correction factor), and Gravimetric mass/volume fields (displays accumulated mass

and air volume. These fields are reset when performing gravimetric sampling.)

 

To adjust the impactor, turn the turret until one of the following is selected:  PM2.5, PM4, 

PM10, or PM (all dust ranging from 0 μm-100 μm).

• The example  below illustrates the impactor set to PM 2.5.  

Align to impactor arrow

PM 2.5