Ametek Thermox 2000 ATEX Series User Manual page 32

3-8 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
Customer-supplied pipe nipple mounting method
If you can't mount the sensor to the process directly because the wall is
curved sharply, covered with insulation, or obstructed with reinforcing
members, you can instead weld the Thermox supplied mounting plate with
attached pipe nipple to a pipe nipple that you supply. To do this, follow
these steps - see Figure 3-4 for help:
1. Weld a short 3 and 1/2" diameter pipe nipple to the duct and extend
through the wall. The shorter you can make the pipe nipple, the better.
2. Insert the Thermox supplied pipe nipple (on the end of the Thermox
supplied mounting plate) into your pipe nipple. If the Thermox sup-
plied pipe nipple extends past the inside of the refractory wall on a
process which has a gas temperature over 650
cut down before installation so it is flush with the inside wall.
3. Weld the Thermox mounting plate to your pipe nipple.
4. Wrap the exposed portion of your pipe nipple with a minimum of 1"
thick weatherproof insulation and heat trace it. This will keep the sample
gas above its dewpoint to prevent sample condensation that can plug
sensor plumbing.
5. Mount the sensor to the process as described in the "Mounting the
Sensor to the Process" section.
o
C, the nipple should be