18 / 204
Easy to Order -
1 - State quantity
2 - Specify the part number
(ours or competitive)
3 - Specify the length * Multiples of 6” (152.4 mm)
starting at 12” are stocked.
4 - Add letters for mounting attachments
5 - For Double Element Assembly add “D” to the
part number (
14K4D-P11F-12
)
Example:
The part number describes the thermocouple giving the gauge,
type of wire, construction, tube length and mounting device, if any. The part number
8K4-P11F-24-SH
signifies an 8 gauge, Type K complete assembly, 11/16” OD Mul-
lite tube, 24” long, a 1/2” x 3/4” steel fitting, and a Standard Head (
SH
). Other combina-
tions of thermocouples and tubes can be specified depending on your application.
!
Note:
If you would like to order a Type E, J, or N assembly, just substitute the K
with an E, J, or N in the part numbers listed on this page.
Typical
Application
Protection
Tube
Wire
Gauge
Type K
Mullite
63.5% Aluminum Oxide,
balance Silicon Dioxide
Mullite has a maximum service temperature of
2900°F (1590°C). It 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 tempera-
tures. 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
Mullite Porcelain
Single tube, O.D. 11/16” (17.5 mm)
1/2” x 3/4” NPT steel fitting
8
14
8K4-P11F-*-SH
14K4-P11F-*-SH
Mullite Porcelain
Single tube, O.D. 11/16” (17.5 mm)
3/4” NPT steel nipple 2 1/2” long.
8
14
8K4-P11N-*-SH
14K4-P11N-*-SH
Mullite Porcelain
Single tube, O.D. 11/16” (17.5 mm)
3/4” NPT alloy 600 nipple sleeve
Specify sleeve length (
Z
)
8
14
8K4-P11N9-Z-*-SH
14K4-P11N9-Z-*-SH
Silicon carbide
Single tube, O.D. 1 3/4” (44.5 mm)
2.0” NPT Machined Steel Bushing
8
14
8K4-SCB-*-SH
14K4-SCB-*-SH
Silicon Carbide
90.0% Silicon Carbide, 9% Silicon Dioxide
Silicon Carbide has a maximum service temper-
ature of 2730°F (1500°C). It has excellent
resistance to thermal shock and the cutting
action of flames. However, 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 porosity,
silicon carbide is usually used a the 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.
Silicon carbide
Single tube, Isopressed over a 1/2” steel pipe
O.D. 2.0” (50.8 mm)
8
14
8K4-SCI12-*-SH
14K4-SCI12-*-SH
Silicon carbide
Single tube, Isopressed over a 3/4” steel pipe
O.D. 2.0” (50.8 mm)
8
14
8K4-SCI34-*-SH
14K4-SCI34-*-SH
Silicon carbide
Single tube, O.D. 1 3/4” (44.5 mm)
FSC2412
cast iron fitting, 3 stainless steel screws.
8
14
8K4-SCF-*-SH
14K4-SCF-*-SH
Silicon carbide
Single tube, O.D. 1 3/4” (44.5 mm)
SCFL
cast iron mounting flange for SCC type
tube..
8
14
8K4-SCFL-*-SH
14K4-SCFL-*-SH
Silicon carbide
Single tube, O.D. 1 3/4” (44.5 mm)
SCFC
cast iron clamp fitting for SCC type tube.
8
14
8K4-SCFC-*-SH
14K4-SCFC-*-SH
* Add required thermocouple length. Multiples of 6” (152.4 mm) starting at 12” are in stock.
1
2
3
4
5
5
6
7
8
Page 18
Phone: 617.527.4385 Fax: 617.964.3746 Email:
sales@asrichards.comStraight Assemblies - Ceramic - Types E, J, K & N - Standard Head, Aluminum