Installation

If your new sensor is to be installed in an existing entry port, be advised that the sensor is 100% interchangeable with your current sensor.

 

For new installations in furnaces, an entry fitting must be provided at the furnace wall to permit the sensor to extend into the furnace chamber. The furnace is prepared by drilling (ideally) a 3” (76.2 mm) diameter hole through the wall and the insulation.  A 1" (25.4 mm) coupling may then be welded to the wall to provide the gas-tight entry.  As the SuperOX^TM has a 1" (25.4 mm) NPT hub; use of conventional 1" (25.4 mm) fittings allows for appropriate installation. A combination of 1" (25.4 mm) nipples and couplings allows for appropriate insertion depth.

 

Your SuperOX^TM Sensor has been shipped with Teflon^TM pipe tape applied to the gland, so you may insert it directly into the furnace. When installing in a hot furnace, insert the first two inches (50.8 mm) directly, then at a rate of no faster than 4" (101.6 mm) per 5 minutes in order to avoid thermal shock fracture. Support the cover end of the sensor during installation.

 

The sensor requires a reference air supply. In addition, the SuperOX^TM Sensor has been designed with an optional cooling port that may require an additional air supply.  SSi provides a custom system, P/N 13017, that supplies both requirements.

 

It is imperative to emphasize that the reference air must be dry, clean, and oil free. Any combustibles in the reference air will cause the sensor to read high in oxygen. Avoid the use of lubricated compressed plant air.  The air connection at the sensor should be made of silicone rubber tubing to avoid problems related to the high temperatures normally encountered at the sensor connection block.  Reference air flow should be in the range of 0.2 to 2 CFH at no more than 2 psi.  Cooling air flow should be in the range of 1 to 10 CFH at no more than 2 psi.

 

Figure 4 and Figure 5 show installations in furnaces and glass tank regenerators.

 

These views show the installation of SuperOX^TM probes in the walls of two different furnaces furnace, utilizing a silicon protection tube which requires a 1 ½” (38.1 mm) coupling (or half coupling) entry. This arrangement is typically used for extremely high temperature applications. The wall is typically 13 ½” (342.9 mm) thick. Correct location of the sensor in the protection tube may be accomplished by inserting a 1” (25.4 mm) coupling and appropriate length 1” (25.4 mm) nipple between the sensor and the protection tube. There are three lengths of protection tubes for use with sensors of 18” (45.72 cm), 27” (68.58 cm) and 36” (91.44 cm) lengths. When using the unprotected sensor, a 1” (25.4 mm) coupling (or half coupling) can be used for direct entry.

 

NOTE: A protection tube is not required for use of the SuperOX^TM Sensor.

 

Standard Installation

Figure 4

 

    

Glass Tank Installation

Figure 5

The standard SuperOX^TM, Ver. 2.0, is provided with a 5 foot long high-temperature cable, as illustrated in Figure 6, so that a plug may be mounted for interconnection with the customer’s measurement and control instrumentation. Alternatively (and preferably), the customer may feed his instrument interconnection cable through the cord connector, and make connections directly to the internal connector.

 

Figure 6

Wire designation:   White (Sensor +) Black (Sensor -) Green (Thermocouple +) Red (Thermocouple - )