Readjustment With Test Gas - Bosch BEA 150 Repair Instructions

4.12.5 Readjustment with test gas

! Do not yet open the gas bottle!
The BEA performs zero calibration.
Allow calibrating gas to flow through the
BEA in line with the instructions on
screen.
Open the calibrating-gas bottle sufficient-
ly to allow some calibrating gas to continu-
ally flow out through the rotameter, even
with the pump running (pressure-less ca-
libration).
i The NO measuring sensor is very
sluggish. An "advance flow" through
the NO measuring sensor is therefore
necessary.
After this flow, confirm with E or by
clicking OK.
The remaining flow time is displayed.
Once recalibration has successfully been
completed, close the calibrating-gas bott-
le.
End recalibration by pressing E or by
clicking OK.
! If you have recalibrated the NO
measuring sensor because you have
just installed a new one, you must
also proceed according to the
instructions in Section 4.12.4,
Calibration of a new NO measuring
sensor.
29