Ametek CEM/Humox, User Manual

Page: 104 / 136

7-2 | Thermox CEM/Humox Analyzer
Warnings!
Observe these cautions when working on the sensor:
•
Disconnect the power from the sensor and control unit.
•
The outside of the sensor cover and all sensor assembly components are ex-
tremely hot (up to 500
o
F, 260
o
C inside the cover), even after a considerable
period from shutdown.
•
Use caution and wear appropriate gloves when handling components!
•
Be extremely careful when performing maintenance on the sensor while the
process is running, especially if the process is under significant positive pres -
sure. Removing any part of the sensor plumbing can allow process gases and
gases of high temperature to escape into the sensor.
•
Always use a backup wrench when working on sensor plumbing. This helps to
prevent damaging welds and distorting sensor plumbing.
•
Never use pipe dope or any other contaminant that gives off combustible vapor
on any joints of the sample tubing. Combustible vapor in the sample tubing can
lead to erroneous readings.