Emerson Rosemount 928 Reference Manual page 57

Reference Manual
00809-0100-4928
3. On the Warning screen, select Next.
4. When calibrating for H
Rosemount 928
S, and CO, expose the sensor to clean air, to zero the
2
reading. When calibrating for O
calibration gas to be used as the "zero" calibration value. If the ambient air may
contain trace amounts of target gas or other gases (for example, carbon monoxide
from engine exhaust) that may interfere with zeroing the device, do the following:
a) Obtain a cylinder of verified clean air (H
concentration calibration gas (O
tubing, 3/16-in. ID, 5/16-in. OD).
, expose the sensor to 0% oxygen concentration
2
S and CO) or a cylinder of 0% oxygen
2
) and a length of calibration tubing (PVC
2
Configuration
February 2023
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