Richards Thermocouple Cat17 Brn

Ceramic Protection Tubes - Sialon

Sialon thermocouple protection tubes are used with thermocouples to continuously monitor the temperature in molten non-ferrous metals such as Zinc, Aluminum, Copper, and Gold. These tubes are most commonly used in the Aluminum casting industry. Sialon thermocouple tubes have excellent thermal shock resistance and therefore can be directly immersed into molten Aluminum . This material is also chemically inert and non-wetting in Aluminum which helps to prevent dross buildup at the melt line. The high performance qualities of these tubes make them the perfect choice for temperature monitoring and control in Aluminum melting and holding furnaces. Sialon Thermocouple protection tubes can be ordered as a plain tube with or without a groove on the open end. Tubes can also be ordered with a 1" NPT Steel female coupling for mounting to straight or angle industrial thermocouple assemblies. Material Specifications • Excellent Thermal Shock and Corrosion Resistance • Non-Wetting in Molten Metals Such as Aluminum and Zinc • Thin Tube Walls For Fast Temperature Response • Tubes Will Not Contaminate The Melt (Chemically Inert) • Higher Strength and Density Than Conventional Ceramics • Gas Tight Thermocouple Tube • Long Service Life

Plain End

Grooved End

Inches

Millimeters

Tolerances

Plain

Grooved

Mounting

O.D. and Length

O.D.

I.D.

O.D.

I.D.

SIAP125065-* SIAP160090-* SIAP220160-* SIAP280160-*

SIAG125065-* SIAG160090-* SIAG220160-* SIAG280160-*

.4724 .6299 .8661 1.1024

.2559 .3543 .6299 .6299

12 16 22 28

6.5 9.0

O.D. ± 5% or .025”

1

None

16 16

Length ± .063”

Tubes Open Both Ends ( OBE )

2

Tubes may be ordered with Both Ends Open by adding “ OBE ” to the part number before the length. Normally stock closed end lengths of multiples of 6 inches starting at 12 inches are cut off making the tube slightly shorter, which in most applications is not a problem (there is a cutting charge). Common cuts are approximately: 12mm OD = 13mm 16mm = 13mm 22mm = 19mm 1” = 25mm

For example a SIAP220160-12 would be cut to SIAP220160-OBE-11 1/2. However, an actual 12 inch OBE can be made by cutting down the next standard longer length (18 inches) but it would add additional material cost (5 1/2 inches) for the 1/2 inch lost.

* Specify length in inches or millimeters (add “mm” after length), up to 59,05 inches or 1500mm. Minimum two digits (e.g. 6” = 06)

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