52 • Chapter 5: User Mode and Calibration HS-04 Operator’s Manual
10. The table below describes the 2 calibration outcomes.
Calibration Passed Calibration Failed
1. The instrument indicates that the
calibration passed.
2. The instrument shows the current
gas reading.
3. If MAX.SPAN is set to ON
(default is OFF, see page 95), the
response reading’s maximum
adjustment is displayed. A
maximum span of 100 ppm
indicates that the reading could
have been adjusted up to 100 ppm.
If the maximum span value is close
to the calibration gas value, the
sensor should be replaced soon.
The maximum adjustment is either
twice the calibration value or full
scale, whichever is lower.
4. Close the regulator.
5. Remove the calibration cup.
6. Press and release POWER MODE
to enter Measuring Mode.
1. The instrument indicates that the
calibration failed.
2. Close the regulator.
3. Unscrew the regulator.
4. Remove the calibration cup.
5. Press and release POWER MODE
to return to the E-CAL screen in
the E-CAL menu.
6. See “Troubleshooting” on page 70.
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