Bacharach Portable Combustion Analyzer Spécifications télécharger pdf (Page 70)

PCA



3 Manual

70 0024-9472 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 62).

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 le

vel 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 76.

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 from 9 to 1,500 ppm. 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 6-7. 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

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.

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Bacharach Portable Combustion Analyzer Spécifications Page 70