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Emerson Rosemount 628 Quick Start Manual page 27

628 universal gas sensor

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May 2023
9. Select OK when the zero measurement reading stabilizes.
Note
Negative measurement readings may occur and are normal
during zeroing.
10. Wait while the Field Communicator performs zero adjustment.
11. Select OK to accept the new zero measurement.
Quick Start Guide
in response time from the sensor while the clean air
travels the length of the calibration tubing.
e) Complete
Step 9
f) Turn off the clean air (or percent oxygen specified
calibration gas) when the sensor is correctly zeroed.
through Step 12.
Quick Start Guide
27

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