Table 3-1. Factory Set Default Calibration/Bump Test Values
INSTRUMENT TYPE BUMP TEST GAS CALIBRATION GAS
CO 60 ppm 60 ppm
O
2
<19%* 20.8%
PH
3 0.5 ppm 0.5 ppm
HCN 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
.
3-3
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