0024-9551
Revision 1
52
PCA
®
400 User Manual
10. Reinstall the Analyzer’s Rear Cover
Using a Phillips-head screwdriver, return Battery & Component Doors to the rear of
the analyzer.
11. Allow Replacement Sensor to Stabilize
Allow the sensor which was just installed to stabilize in the circuit before continuing with
this procedure. Stabilization time for all sensors
(except for the NO sensor)
is about 1-hour.
The NO sensor baseline technically requires several days to stabilize, but should be
sufficiently stabilized for use in approximately 4-hours.
12. Turn ON the Analyzer
Turn the analyzer ON, allowing it to cycle through its 60-second warm-up period in fresh air.
5.6 Manual Sensor Calibration
5.6.1 Starting a Calibration
Start any calibration procedure by taking the following steps:
1. Turn ON the Analyzer
Turn the analyzer ON, allowing it to cycle through its 60-second warm-up period in fresh
air. During the warm-up, the analyzer’s operation is checked and sensors are set to the
following ambient conditions:
• O
2
sensor spanned to 20.9%,
• All gas sensors are zeroed,
• The pressure sensor is zeroed.
2. Address Warm-Up Errors
Any errors detected during warm-up will be listed on the display immediately following
warm-up. Correct any errors before proceeding. Refer to Error Codes
(Section 5.7.1)
for a list
of error messages and their meanings.
3. Access Calibration Menu
Access the CALIBRATION MENU and use the analyzer’s touch screen or keypad to enter the
4-digit calibration password.
(The calibration password can be changed and / or disabled using
the optional PCA
®
Reporting Software.)
f
To access the CALIBRATION MENU:
Main Menu
Calibrate
( )
f
PCA
®
400 default calibration password:
1111
