PROGRAMMING
4-14
4.3.6. OXY Calibration Type
The QRAE PLUS allows both 2-point and 3-point O
2
sensor
calibrations (99.9% nitrogen or other inert gas).
The 2-point calibration is at 20.9% during “fresh air zero” and
0% in single sensor calibration. The 3-point calibration is at
20.9% during “fresh air zero”, and at both 19.5% and 0% in sub-
menus of the single sensor calibration. The 3-point calibration
gives greater accuracy for oxygen near 19.5%, a common
alarm limit for warning of oxygen depletion.
Only the 19.5% calibration point can be modified, from 19.0% to
20.0% as described in Section 4.3.4.
For more details, see Section 4.3.3 for oxygen calibration and
Section 4.3.4 for span value modification.
When the display shows “OXY Calibration Type?”, answer the
question on the LCD will get the desired calibration type.
1. “OXY Calibration Type?” is the next sub-menu item in the
Calibration /Select Gas submenu.
2. Press the
[Y/+]
key to enter the sub-menu. The display
shows “OXY Cal type = 2-Pt” or “OXY Cal type = 3-Pt”.
3. Press
[N/-]
to toggle between the options,
[MODE]
to skip
to the next menu, or
[Y/+]
to accept the current Cal type.
Содержание QRAE PLUS PGM-2000
Страница 5: ...NOTE THE SYMBOL MEANS CAUTION RISK OF DANGER CONSULT OPERATION AND MAINTENANCE MANUAL ...
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Страница 12: ...GENERAL INFORMATION 1 4 non condensing ...
Страница 33: ...OPERATION 2 20 A new datalog event is created when the datalogging is resumed ...
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Страница 81: ...TROUBLESHOOTING 8 8 ...
Страница 83: ...APPENDIX A A 2 ü Function allowed Password required ...
Страница 87: ...APPENDIX B B 3 Xylene p 2 8 1 1 Lower Explosion Limit of the gas in volume percent ...