Super Systems SuperOX - Manual (Page 10)

Super Systems Inc. Page 10 of 14 SuperOX TM Operations Manual
greater than 1200°F (650°C), but less than 3000°F (1650°C) in a slightly positive pressure
situation to prevent air in-leakage.
The sensor cannot be exposed in an area with excessive turbulence or high gas velocity,
especially when there is particulate in the atmosphere. In order to comply with these
requirements, SSI recommends that, for glass tanks with regenerative heating, the sensor be
installed vertically in the center of the regenerator crown or horizontally on the regenerator
“target” wall. Please note that target wall life will be significantly less when compared with a
vertical, crown installation.
For glass tanks with recuperative heating, SSI recommends installation in a vertical position in
the flue gas collector, behind the branch off, but in front of the gate valve. Please remember
the temperature constraints when looking for this location.
You must drill 2 ¾ to 3 inch (19.05 to 76.2 mm) holes through the refractory brick. This will allow
easy installation and removal of the SuperOX TM Sensor.
Vertical installation
Sensor should be recessed 1 to 2 inches (25.4 to 50.8 mm) into the refractory away from furnace
atmosphere. When installing the probe, it is best to insure this length of insertion. From the hot
face, one will recess the sensor until the readings begin to change. Once a change has been
observed, lower the sensor approximately ½ inch (12.7 mm) and secure the sensor in place.
Horizontal Installation
SSI recommends that the “hot” end of the sensor extend approximately 3 to 5 ½ inches (76.2 to
139.7 mm) beyond the hot face of the refractory. If there is an excessive amount of batch carry-
over, or if the gas stream has a very high velocity, it is recommended that the sensor be
recessed. Batch carry-over and high velocity gas will erode the sensor and significantly reduce
life.
Sensor Preparation before installation
When using the SSI oxygen mounting assembly, place the sensor at the maximum height
possible and lower it toward the furnace 2 to 4 inches (50.8 to 101.6 mm) every five minutes. If
you do not have an SSI Mounting Assembly, note that approximately 2 hours before installing
the sensor, you should lay the sensor on top of the regenerator (for pre-warming), taking care
to protect the sensor head and wiring assembly.
Sensor installation (insertion) rate
WARNING: You must follow operational safety guidelines when drilling, and installing a sensor
in an operating glass furnace. It may be possible to use existing furnace openings. When
repairing a furnace, or planning for new construction, you should consider drilling the holes for
oxygen sensors.
Insertion of the sensor should be no greater than 4 inches (101.6 mm) every 5 minutes.