Installation

 

Fig. 1 shows a suggested installation utilizing a 1” coupling welded to the generator wall.  The hole through the insulation must be at least 1 ¼” in diameter and axially aligned with the coupling to avoid interference with the Bazooka™ well which has an O.D. of 1.050”.  For existing installations with larger fittings, use a bushing to reduce the diameter to the 1” female required by the probe gland.  Provide for about 1 SCFH of reference air, 6-10 SCFH of burnoff air, and 2 – 3 SCFH of sample from the endo manifold or sample from individual retorts.  The probe should be inserted to a depth such that, at equilibrium, the probe temperature is between 1400ºF (760°C) and 1700ºF (926.7°C), preferably at 1550ºF (843.3°C).

 

 

 

IMPORTANT!   Zirconia is thermal shock sensitive. Insert into hot atmosphere no faster than 2” (51mm) per minute (after first 4 inches or 101 millimeters).

 

Temperatures above 1500 °F (815.6°C) will prevent sooting from the sample atmosphere.

 

1550 °F (843.3 °C) is an optimal temperature to ensure that the sheath is not exposed to excessive temperatures, and this temperature will provide optimal life of the sheath and its components.