Warning; Calibrating The Altair Pro Single Gas Detector - MSA ALTAIR Pro Manual De Operación

Chapter 4,
Calibrating the ALTAIR Pro Single Gas
Detector
Regulators and tubing used for bump testing and calibrating
Cl 2 , ClO 2 , NH 3 , HCN or PH 3 should be labeled by the user
for that specific gas and must only be used for that gas
exclusively in the future.
• The ALTAIR Pro Single Gas detector must be calibrated if it does
not pass a Bump Test or if calibration is required by local
procedures. In addition:
• For oxygen instruments, perform a calibration if:
• there are changes in barometric pressure
(altitude changes)
• there are extreme changes in ambient temperature and
humidity (see TABLE 6-2, "Instrument Specifications").
• the instrument does not pass a bump test.
• Calibration is required at certain intervals by local
procedures.
• Special requirements for ALTAIR PRO O 2 -R Remote
Oxygen Detector:
• Operate this instrument only in ambient
temperatures ranging from 0ºC to 40ºC
(32ºF to 104ºF).
• If the instrument is taken into an environment where
the ambient temperature is 15ºC (59ºF) or more,
higher or lower, than its previous location, do not
use the instrument for a period of 40 minutes to
allow the sensor to adjust to the new conditions.
After this 40-minute period, perform a Fresh Air Set-
up (FAS) to re-zero the sensor. Perform the FAS in
fresh air only.
• Quick changes in barometric pressure result in an
offset in the sensor reading for a few minutes. If this
occurs, do not use the instrument for a period of five
minutes; then, perform a Fresh Air Set-up (FAS) to
re-zero the sensor. Perform the FAS in fresh air only.

" WARNING

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