10
IM 11M12A01-01E-A
the induction flow is reduced, ensure that the eductor inducts air when the process
pressure fluctuates.
When the process pressure is positive, close the needle valve for the sample gas outlet
b.
to reduce exhaust gas flow. Refer to section 5.1 for piping instructions.
When the probe adapter is surrounded by a heat insulator, remove the insulation. Ensure
c.
that the temperature of the probe adapter does not fall below the dew point of the gas in
winter conditions.
To prevent temperature rises due to radiant heat, insert a heat insulator between the
d.
process wall and the probe adapter.
To prevent temperature rises from thermal conduction, place the mounting flange as far
e.
from the process wall as possible (4” min).
(2) When the surface temperature is less than 200ºC (392ºF):
When the process pressure is negative, raise the eductor air pressure to increase
a.
induction flow of the measurement gas. Refer to section 6.1 of this manual for setting of
induction flow. Excessive dust may accumulate, and the eductor may clog if induction
flow increases.
When the process pressure is positive, open the needle valve for the sample gas outlet
b.
to increase the gas flow.
Warm the probe adapter. Refer to Appendix A for instructions relating to the /HT Heated
c.
Air Eductor Option. Ensure that the temperature does not drop below freezing point.
When the surface is still less than 200ºC (392ºF) or below the dew point of the measured
d.
gas regardless if the above measure have been taken, warm the adapter with an
external; heat source such as steam.
Summary of Contents for ZR22P
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Page 18: ...18 IM 11M12A01 01E A Chart 7 1 Blowback Timing Sequence...
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Page 23: ...23 IM 11M12A01 01E A APPENDIX A Dimensional Drawings...
Page 27: ...27 IM 11M12A01 01E A APPENDIX B Wiring Diagrams...
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