Specifications

GB
MSA OPERATION
ALTAIR PRO - Operating Manual 33
(7) If calibration fails, check:
 whether the correct test gas was used,
 whether the test gas cylinder is empty or the date has expired,
 whether the test gas hose was connected to the sensor,
 whether the flow governor is set to 0.25 l/min.
(8) If necessary, repeat steps (1) to (7).
 "OK" is displayed. Otherwise ("
ERR"), the instrument must be taken out
of use.
(9) Conduct a self-test to confirm the calibration.
 If the self-test is successful, a "" is displayed.
Factory Set Default Calibration / Bump Test Values
INSTRUMENT TYPE BUMP TEST GAS CALIBRATION GAS
CO 60 ppm 60 ppm
H
2
S 40 ppm 40 ppm
O
2
and O
2
-R <19% * 20.8%
SO
2
10 ppm 10 ppm
NO
2
10 ppm 10 ppm
NH
3
25 ppm 25 ppm
PH
3
0.5 ppm 0.5 ppm
HCN 10 ppm 10 ppm
Cl
2
10 ppm 10 ppm
ClO
2
2 ppm Cl
2
0.8 ppm ClO
2
**
* The O
2
bump test can also be performed by exhaling on the sensor inlet for approximately three to
five seconds.
** MSA recommends calibration of the ClO
2
ALTAIR PRO Detector using a ClO
2
generator for most
accurate calibration. This instrument has a cross-sensitivity factor to Cl
2
of:
2 ppm Cl
2
equals approximately 0.8 ppm ClO
2
.