Installation and Start Up
| 3-7
necessary to stand the analyzer off the process pipe by more than 12
inches, use a steam jacketed spool piece. If nozzle length is less than
six inches, a heat trace is not necessary. If the nozzle is six to 12 inches,
it should be heat-traced at a minimum of 150 °C. Weld necks greater
than 12 inches in length are not recommended.
Never place the analyzer at such a standoff distance that a sample
probe length greater than five feet is required.
3. The sample tap valve handle should be installed so that the handle
must be turned down (toward the pipe) to open the valve. If it is
installed in such a way that the handle must be turned up (toward the
analyzer) to open the valve, the analyzer enclosure may interfere with
its being able to fully open.
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