ALTAIR
®
4XR
36
Operation
US
•
If calibration lockout option is NOT selected:
ZERO
screen displays.
(3)
With the device exposed to fresh air, press the
q
button to confirm the
ZERO CAL?
screen. A
sensor refresh and Zero Calibration will occur.
Alternatively press the
button to execute a Fresh Air setup (FAS). See chapter 3.2
"Turning ON and Fresh Air Setup" for more details.
After Zero calibration completes, the device momen-
tarily displays “
ZERO PASS
” or “
ZERO ERR
” along
with the flag of any sensor that failed.
During zero calibration the O
2
sensor is also span calibrated to 20.8% O
2
fresh air,
adjusting the calibration curve as needed. During span calibration, the O
2
sensor's accu-
racy is checked against a known oxygen gas concentration without adjusting the calibra-
tion curve.
Summary of Contents for ALTAIR 4XR
Page 1: ...MSAsafety com Operating Manual ALTAIR 4XR Multigas Detector Order No 10175896 00 ...
Page 52: ...ALTAIR 4XR 52 Appendix US 7 Appendix 7 1 Start Up Sequence Power on ...
Page 53: ...ALTAIR 4XR 53 Appendix US 7 2 Fresh Air Setup FAS ...
Page 55: ...ALTAIR 4XR 55 Appendix US ...
Page 56: ...ALTAIR 4XR 56 Appendix US 7 4 Bump Test ...
Page 57: ...ALTAIR 4XR 57 Appendix US 7 5 Options Setup ...
Page 58: ...ALTAIR 4XR 58 Appendix US 7 6 Sensor Setup ...
Page 59: ...ALTAIR 4XR 59 Appendix US 7 7 Calibrations ...
Page 60: ...ALTAIR 4XR 60 Appendix US ...
Page 61: ...ALTAIR 4XR 61 Appendix US 7 8 Alarm Setup ...
Page 62: ...ALTAIR 4XR 62 Appendix US 7 9 Time and Date Setup ...
Page 63: ...sales norrscope com ALTAIR 4XR 63 Appendix US 7 10 Bluetooth Setup ...