PCA
3 Manual
74
0024-9473 Rev 3
6.7.2. Procedure
1. If not already done, turn ON the analyzer and display the
CALIBRATION LIST screen (refer to Calibration on page 66).
2. Use the ▲▼ buttons to highlight CO-LO, and then press
ENT
to display
the CALIBRATE CO screen.
NOTE:
“Measured” is the current CO reading, while
“Applied” is a known CO level that will be applied for
calibration purposes.
3. Attach a 500 ppm CO cylinder to the regulator of the calibration fixture
shown in Figure 6-12 on page 80.
4. Use the ▲▼ and
◄►
buttons to enter an applied value that exactly
equals the concentration stamped on the CO cylinder.
NOTE:
The calibration range is 9 to 1,500
ppm. An attempt
to calibrate outside this range causes the message “Applied
Value High” (or Low) to appear at the bottom of the screen.
Figure 6-7. CO
LOW
Sensor Calibration
5. Adjust the regulator for a flow meter indication of approximately 2 SCFH.
Wait until the measured reading stabilizes (approximately 3 minutes),
and then press
ENT
to calibrate the CO Measured value to that of the
applied value. The message “Good Calibration” should briefly appear
followed by the TEST GAS CO/H
2
screen.
NOTE:
If the sensor’s output is low, but still usable, then
the message “Good Calibration WARNING Low Sensor”
will appear. The sensor will now be marked as being Low
in the DIAGNOSTICS screen.
NOTE:
If the sensor’s output is too low to be usable, then
the message “Bad Calibration Sensor End of Life, Entry
Not Saved” will appear. The sensor will now be marked as
being BAD in the DIAGNOSTICS screen.
Summary of Contents for PCA3
Page 23: ...PCA 3 Manual 0024 9473 Rev 3 23 Figure 3 2 Connecting the Probe to the Analyzer...
Page 64: ...PCA 3 Manual 64 0024 9473 Rev 3 Figure 5 23 Printer Alignment and Sample Printout...
Page 84: ...PCA 3 Manual 84 0024 9473 Rev 3 Figure 7 2 Inside View with Rear Case Removed...
Page 86: ...PCA 3 Manual 86 0024 9473 Rev 3 Figure 7 5 Wire Routing Connectors and Solder Connections...
Page 101: ...PCA 3 Manual 0024 9473 Rev 3 101...
Page 102: ...PCA 3 Manual 102 0024 9473 Rev 3...
Page 103: ...PCA 3 Manual 0024 9473 Rev 3 103...
