001 Front Cover

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Straight Thermocoupfe Assembfies *

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Ceramic Protection Tub€s . Types'Ej ';

Easy to Order-

Example: The part number describes the thermocouple giving the gauge, type of wire, construction, tube length and mounting device, if any. The part num- ber 8K4-P11 F-24-SH signifies an 8 gauge, Type K complete assembly, 11116" O.D. Mullite tube,24" long, a112" x3l4" steel fitting, and a standard weatherproof aluminum head. Other combinations of thermocouples and tubes can be speci- fied depending on your application. I Nore: tf you would tike to order a Type E, J, or Type N asse mbly, iust substitute the K with a E, J, or N in the part numbers listed on this page.

1 - State quantity 2 - Specify the part number (ours or competitive) 3 - Specify the length .

multiples of 6" (152.4 mm) are stocked

4 - Add letters for mounting attachments 5 - For Double Element Assembly add D to the to the part number. (1 4K4D-P11 F-12-SH)

Mullite Porcelain 63.5 % Aluminum Oxide, balance Silicon Dioxide Construction- Single tube, O.D. 3/8" (9.5mm) 3/8" NPT steel hex nipple 1 112" long. With plug and jack Mullite Porcelain 63.5 % Aluminum Oxide, balance Silicon Dioxide Construction- |

14K4.PO6HXPJ.K3.*

14

Mullite

gK4-P11 F-*-SH

8

Mullite has a maximum service temperature of 2900'F (1590'C). lt is considered to be better than Alumina for thermal shock resistance. Mullite tubes should be used with care, since they have poor mechanical shock resistance. Secondary metal tubes can be added for protection from mechanical damage. Mullite tubes are considered gas tight at high temperatures. All tubes which are used in horizontal installations and at elevated temperatures should be supported. Mullite tubes should not be used for primary protection tubes on noble metal (platinum based) thermocouples,

2

Single tube, O.D.11116" (17.Smm) 112" x314" NPT steel fitting.

14K4-P11F-.-SH

14

Mullite Porcelain 63.5 % Aluminum Oxide, balance Silicon Dioxide Construction-

gK4-P11N-*-SH

8

3

Single tube, O.D . 11116) (17.5mm 314' NPT steel nipple 2112" long.

14K4-P11N-*-SH

14

Mullite Porcelain 63.5 % Aluminum Oxide, balance Silicon Dioxide Construction- Single tube, O.D.11116" (17.5mm) with alloy sleeve 314" NPT alloy 600 nipple sleeve Specifu sleeve length (Z) 90.0% Silicon Carbide ,9"/" Silicon Dioxide Construction- ' - Silicon Carbide 90.0% Silicon Carbide ,9"/" Silicon Dioxide Construction- Single tube, lsopressed over a 112" steel pipe. O.D. 2.0" (50.8mm). 90.0% Silicon Carbide ,9"/" Silicon Dioxide Construction- Single tube, lsopressed over a 314" steel pipe. O.D. 2.0" (50.8mm) 90.0% Silicon Carbide , 9"/o Silicon Dioxide Construction- SCP ' v tv Silicon Carbide Silicon Carbide Single tube, O.D. 1 314" (44.5mm) FSC1216 cast iron fitting with stainless steel set screws. nn ijnne for scc type tubes. 8 4 5 Single tube, O.D.1 314" (44.5mm) 2.0" Male NPT machined steel bushing. Silicon Carbide 6 6 7

8K4-P11 Ng-Z-.-SH

B

',14K4-P11 Ng-Z-*-SH

14

I

8K4-SCB-*-SH

14K4-SCB-*-SH

14

Silicon Carbide

8K4-SC112-.-SH

8

14K4-SC|12-.-SH

14

Silicon Carbide has a maximum service temperature of 2730" F (1500"C). lt has excellent resistance to thermal shock and the cutting action of flames. Howevet silicon carbide tubes are porous so they should not be used if a gas tight seal is required for protection of the thermocouple element. Because of their porousity, silicon carbide is usually used as secondary thermocouple protection tube. The SCI type silicon carbide tubes are isopressed around a steel inner protection tube. This creates a gas tight unit, which is then considered a non-porous tube.

8K4-SCl34-*-SH

8

14K4-SCl34r-SH

14

8K4-SCP.*.SH 14K4-SCP-"-SH

8 14

gK4-SCFL-*-SH 14K4-SCFL-.-SH

8 14

SCFC cast iron clamp fitting for SCP type tubes.

8K4-SCFCJ.SH 14K4-SCFC-.-SH

8 14

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* Add the required thermocouple length (.) as the suffix. Multiples of 6" (1€.4m!) are n stock.

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