Specifications

PCA
®
3
16
Selects a highlighted item. In addition, if changes were
made to one of the analyzer’s operating parameters (e.g.,
date, time, O
2
reference, etc.), pressing this button confi rms
those changes and saves them in memory.
Starts and stops a combustion test when the Combustion
Test screen is displayed. Pressing this button in any other
screen returns the analyzer to the Combustion Test HOLD
screen. Pressing this button during the 5 second turn-off-
delay period will abort the turn-off process and also return
the analyzer to the Combustion Test HOLD screen.
Displays a previously viewed screen. In addition, if changes
were made to one of the analyzer’s operating parameters
(e.g., date, time, O
2
reference, etc.), pressing this button
aborts those changes, restores the old values, and then
displays the previously viewed screen.
Turns the analyzer ON and OFF, and is also used to turn
the keypad LEDs ON and OFF.
NOTE: When the analyzer is turned OFF, there is a 5 second
delay, during which time an operator can keep the analyzer
turned ON by pressing the RUN / HOLD button. Also
note that if the measured emission levels are above prede-
termined limits at the time the instrument is turned OFF,
the pump is automatically started and purges the sensor
compartment with fresh air until the gas levels inside the
analyzer are reduced. If desired, the purging process can be
aborted by again pressing the I/O button, though it is not
recommended.