TSI Instruments EVM SERIES, Руководство пользователя

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Setting up Parameters via the Keypad
Setting Profiles (Particulate Correction Factors)
EVM Series User Manual
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Setting Profiles (Particulate Correction Factors)
The EVM supports eight different particulate matter (PM) profiles with customized name settings and
user correction factor settings. When the profile field is selected from the particulate menu, you are able
to edit this field by pressing the Edit soft key. Once opened, you can change the profile name and
correction factor setting. (
NOTE: Each profile stores up to four calibration verifies.)
1. Profile Name: You can change profile name and assign up to eight characters.
2. Factors: A user will have different correction factors based on the type of dust you are measuring.
How Particulate Factors are Adjusted and Calculated
All particulate profiles are factors are calibrated to Arizona Road Dust (ARD) with its particle size and
composition. Other dust compositions can be measured accurately by adjusting a profile’s correction
factor.

NOTE : For best measurement results, it is recommended to enter in the dust correction factor prior
to your particulate study. (This may require a gravimetric sampling.)
To calculate a correction factor , follow the guidelines below:
1. Run the instrument in the applicable environment for a set period of time/volume (i.e., 6–8 hours).

Accumulators:
 The gravimetric mass accumulator will display the amount of dust accumulated based on
the active profile.
 The gravimetric volume accumulator will display the amount of volume passed through the
gravimetric filter.
2. After the run, check the gravimetric mass accumulator, compare to what was actually measured
from the lab, and enter in a correction factor.

For example, before measuring ensure the gravimetric accumulators are reset and the
gravimetric filter is replaced. Next, you measure for four hours and the gravimetric
accumulator is displayed as 10 mg. Then, you measure the dust in the gravimetric filter (or
cassettes) and determine the actual weight. If the actual weight is 20 mg, you would change
the correction factor from 1 to 2.
Dust Correction Factors (Profiles)
When setting up the particulate parameters, it is good to keep in mind that the user defined profiles (or
correction factors) are a submenu of the particulate menu. Because of this layout, the following section
explains how to change the profiles/correction factors and apply a new profile.
 Setting dust correction factors (profiles)
1. From the Start screen, select the Setup menu by pressing ▲ / ▼ Arrows and press Enter .
2. Press ▲ / ▼ Arrows repeatedly until Particulate is selected and press Enter . (The particulate
setup screen will appear.)
3. Ensure Particulate is set to Enabled . (If not, press
▲
/
▼
Arrows to enable and press Enter
to return to the first column.)