Aerosol Photometer
Aerosol Photometer - 2i 34
The instrument saves the last reagent selected in memory
even after a power cycle.
Step 6 Choosing a Setup Method
a Set 100% to Upstream Concentration
The instrument will attempt to establish its
reference baseline to the aerosol introduced in
the upstream aerosol port. If it is successful, an
estimate of the aerosol concentration and
stability will be communicated to the user.
b Set Internal Reference
The instrument will set its reference baseline
and internal gain based upon settings stored
during factory calibration.
c Use Previous 100% Settings
The instrument will reset its reference and
internal gain setup to the prior settings.
After successfully setting up the 100% reference, the
instrument will automatically display the running mode
screen and set the sampling valve to the downstream
aerosol port.
Step 7 Performing Leak Testing
The unit is now ready to perform leak testing or
aerosol monitoring. To return to the main menu select
the Home Menu key and press the Enter button (see
“CHAPTER 6 Software Reference” page 41 for a full
software description).
i
Note
If there is a concern that the zero baseline may have
drifted, the operator may re-zero the instrument at any
time by accessing the option in the main menu.
Reporting Modes
Summary Mode
The summary reporting mode was implemented with
certifiers doing in-situ validation of high efficiency
filtration systems (HEPA & ULPA) in mind. It provides
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