
PCA
3 Manual
0024-9473 Rev 4 69
NOTE: The calibration range is from –6 to –2 inwc (–15 to
-5 mb). An attempt to calibrate outside this range will
cause the message “Applied Value High” (or Low) to
appear at the bottom of the screen.
Figure 6-2. Pressure Sensor Calibration
7. Wait until the measured reading stabilizes, and then press ENT to
calibrate the pressure sensor’s Measured value to that of the applied
value; after which the message “Good Calibration” should briefly appear
followed by the CALIBRATION LIST screen being re-displayed.
8. Remove calibration equipment.
Figure 6-3. Pressure Sensor Calibration Equipment
6.5. T-Stack Calibration
This procedure first zeros and then spans the stack temperature channel to
known temperature values.
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