Brooks Instrument QMBM - Manual (Page 38)

Section 3 Operation
3-2
Installation and Operation Manual
X-CM-QmB-eng
Part Number: 541B029AAG
June, 2011
QmB Series IP40, IP66, IP66XP
3-2 Zero Adjustment
After the Brooks Quantim has been fully installed, you must perform the
zeroing procedure. This procedure ensures that the instrument responds
properly to zero flow condition and sets a baseline for flow. To perform the
zeroing operation on the meter/controller, use the ZERO button, which is located
on top right hand side (outlet side) of the instrument. Zero button must be pressed
for at least 3 seconds to initiate zeroing procedure. The status LED will flash red
on and off during the zeroing procedure. (See Figure 3-2).
Figure 3-2 Location of the Zero Button.