Bump Testing Instruments with Standard Sensors • 32
14. The SDM-E2 will perform a fresh air adjustment on the instrument.
•
If the air adjustment is successful, the SDM-E2 will indicate that all
channels passed with a “P” to the right of the “Z”. The “Z” indicates it is a
fresh air adjustment (zero) result. The SDM-E2 will continue as described
in step 15 below.
•
If one or more of the sensors fails the fresh air adjustment, the SDM-E2 will
abort the bump test and will not apply calibration gas. If this happens, the
BUMP
LED will flash red indicating a failure and the following screen will
appear indicating which channels passed and failed the fresh air
adjustment with a P (pass) or an F (fail) to the right of the “Z”. The “Z”
indicates it is a fresh air adjustment (zero) result. In the following example,
the H
2
S channel failed the zero adjustment.
In this case, continue with step 18.
CH4 0%LEL Z P
OXY 20.9vol% Z P
H2S 0.0ppm Z P
CO 0ppm Z P
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CH4 0%LEL Z P
OXY 20.9vol% Z P
H2S 5.0ppm Z F
CO 0ppm Z P
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