Cat16 R2

Straight Assemblies - Double Tube -Types B, R, & S - Standard Head, Aluminum

The Richards Double Tube Thermocouple Assemblies are designed for severe service applications and molten glass furnaces. The double tube assemblies with a metal outer tube are for applications where mechanical damage and thermal shock to the thermocouple is a problem. The double tube assemblies, which have a Silicon Carbide outer tube, are for applications where thermal shock and flame contact is a problem. Double ceramic tube assemblies are for extra protection against corrosive atmospheres. We offer many other combinations of double tubes, which we could not list in this catalog due to space limitations. Richards double tube assemblies can be made from any type of metal or ceramic tube, which is available. ! Note: If you would like to order a Type B, or Type R assembly, just substitute the S with a B or R in the part numbers listed on this page. Triple tube assemblies are also available.

Primary Tube (Inner)

Secondary Tube (Outer)

Wire Gauge

Type K

Alumina

Alumina

98.8 Aluminum Oxide Construction: Single tube, O.D. 3/8” (9.5 mm) Cemented.

98.8 Aluminum Oxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting.

1

24

24S5-AP06-AP11F-*-SH

Alumina

Alumina

98.8 Aluminum Oxide Construction: Single tube, O.D. 11/16” (17.5 mm) Cemented.

98.8 Aluminum Oxide Construction: Single tube, O.D. 1” (25.4 mm) 3/4” x 1” NPT steel fitting. Silicon Carbide 90.0% Silicon Carbide, 9% Silicon Dioxide Construction: Single tube, O.D. 1 3/4” (44.5 mm) 2.0” NPT Machined Steel Bushing #7 Seamless Stainless Steel (446) Chromium 23-27%, Manganese 1.5% Silicon 1%, Nitrogen .25%, Carbon 2%, Sulphur .030%, Phosphorous .040%, Iron (Balance) Construction: 3/4” pipe, Extra Heavy, Schedule 80 #9 Seamless Stainless Steel Alloy (600) Nickel 76%, Chromium 15.5%, Iron 8%, Manganese .5%, Silicon .2%, Copper .2%, Carbon .08% Construction: 3/4” pipe, Schedule 40 Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting. Silicon Carbide 90.0% Silicon Carbide, 9% Silicon Dioxide Construction: Single tube, O.D. 1 3/4” (44.5 mm) 2.0” NPT Machined Steel Bushing Silicon Carbide 90.0% Silicon Carbide, 9% Silicon Dioxide Construction: Single tube, O.D. 1 3/4” (44.5 mm) FSC1216 cast iron fitting and 3 stainless steel screws Silicon Carbide 90.0% Silicon Carbide, 9% Silicon Dioxide Construction: Single tube, Isopressed over a 3/4” NPT steel pipe. O.D. 2.0” (50.8 mm)

2

24

24S5-AP11-AP16F-*-SH

Alumina

98.8 Aluminum Oxide Construction: Single tube, O.D. 1” (25.4 mm) 3/4” x 1” NPT steel fitting. Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) Cemented Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting. Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 3/8” (9.5 mm) Cemented Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting. Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting. Mullite Porcelain 63.5% Aluminum Oxide. Balance Silicon Dioxide Construction: Single tube, O.D. 11/16” (17.5 mm) 1/2” x 3/4” NPT steel fitting.

3

24

24S5-AP11F-SCB-*-SH

4

24

24S5-P11F-734XH-*-SH

5

24

24S5-P11F-934-*-SH

6

24

24S5-P06-P11F-*-SH

7

24

24S5-P11F-SCB-*-SH

8

24

24S5-P11F-SCF-*-SH

9

24

24S5-P11F-SCI34-*-SH

* Add required thermocouple length. Multiples of 6” (152.4 mm) starting at 12” are in stock.

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Phone: 617.527.4385 Fax: 617.964.3746 Email: sales@asrichards.com