MSA ALTAIR 4 Manual De Instrucciones página 478

OPERATION
3.9.1 Zero Calibration
To skip the ZERO procedure and move directly to the calibration
span procedure, push the [
30 seconds, the instrument prompts user to perform a SPAN
calibration before returning to the Normal Operation mode.
(1) Press and hold the [
Operation mode for three seconds
(2) If calibration lockout option is selected, enter password.
• ZERO screen is then displayed.
If calibration lockout option is NOT
selected:
• ZERO screen displays.
(3) With the instrument exposed to fresh air,
press the [
ZERO screen.
• The hourglass will flash during the
10 second sensor zero adjustment.
After ZERO calibration completes, the
instrument momentarily displays "
" or "
PASS
flag of any sensor that failed.
38
] button in Normal
YES
Password
Correct?
] button to confirm the
" along with the
ZERO ERR
ALTAIR 4 - Operating Manual 10088160/00 Y-HLR
] button. If no button is pushed for
NO
COMB/EX O2
CO
H2S
COMB/EX O2
CO H2S
ZERO
MSA
COMB/EX
O2
CO
H2S
CO
GB