Bacharach PCA 3 Manual De Propietario
PCA
3 Manual
0024-9472 Rev 2
25
NOTE: The PCA
®
3 performs a zero function during warm-up.
Among other purposes, an auto-zero determines the “zero reading”
of the CO channel in fresh air and provides an offset for the CO
measurement. A manual zero detects background CO during
startup.
of the CO channel in fresh air and provides an offset for the CO
measurement. A manual zero detects background CO during
startup.
Manual Zero:
When the CO channel is set to manual zero, the analyzer does not
zero the CO sensor to ambient conditions during start up. In this
mode, the “fresh air zero” established during manual mode setup
is stored in memory and used for the calculation of CO.
mode, the “fresh air zero” established during manual mode setup
is stored in memory and used for the calculation of CO.
Auto Zero:
Auto Zero determines the zero reading of the CO channel in fresh air and
provides an offset for the CO measurements. Manual zero is used to detect CO
that may be present during start-up. The auto/manual zeroing option allows the
operator to select the start-up mode. It is selectable from the CO Zero Setting of
the Setup Menu.
provides an offset for the CO measurements. Manual zero is used to detect CO
that may be present during start-up. The auto/manual zeroing option allows the
operator to select the start-up mode. It is selectable from the CO Zero Setting of
the Setup Menu.
When the CO channel is set to auto zero, the CO sensor is zeroed
to the ambient CO level during start up. Important: When using
this mode, the analyzer must be turned ON in fresh air; otherwise,
incorrect CO readings will occur.
to the ambient CO level during start up. Important: When using
this mode, the analyzer must be turned ON in fresh air; otherwise,
incorrect CO readings will occur.
NOTE: Both methods take the user through a 60-second count
down to establish a new zero. The manual mode establishes a
fresh air zero and stores it for use during instrument startup.
down to establish a new zero. The manual mode establishes a
fresh air zero and stores it for use during instrument startup.
4.4. Temperature Units Selection
Select to display temperature in either °F or °C as follows.
1. Display the MAIN MENU by pressing the MENU (F2) button. If
necessary, press ESC until MENU appears above F2.
2. Use the
▲▼ buttons to highlight SETUP, and then press ENT to display
the SETUP MENU.
3. Use the
▲▼ buttons to highlight TEMP UNITS, and then press ENT to
display the TEMP UNITS MENU.
4. Use the
▲▼ buttons to highlight the desired temperature units. In the
example shown, Fahrenheit has been selected.
5. Press ENT to save the selection and re-display the SETUP MENU.