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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
signifies an 8 gauge, Type K complete assembly, 11/16” OD Mullite
tube, 24” long, a 1/2” x 3/4” steel fitting, and a screw cover head. Other combinations
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 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.
Mullite Porcelain
Single tube, O.D. 3/8” (9.5 mm)
3/8” NPT steel hex nipple 1 1/2” long -
Plug & Jack
14
14K4-P06HXPJ-K3-*
Mullite Porcelain
Single tube, O.D. 11/16” (17.5 mm)
1/2” x 3/4” NPT steel fitting
8
14
8K4-P11F-*
14K4-P11F-**
Mullite Porcelain
Single tube, O.D. 11/16” (17.5 mm)
3/4” NPT steel nipple 2 1/2” long.
8
14
8K4-P11N-*
14K4-P11N-*
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-*
14K4-P11N9-Z-*
Silicon Carbide
90.0% Silicon Carbide, 9% Silicon Dioxide
Silicon Carbide has a maximum service
temperature 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, O.D. 1 3/4” (44.5 mm)
2.0” NPT Machined Steel Bushing
8
14
8K4-SCB-*
14K4-SCB-*
Silicon carbide
Single tube, Isopressed over a 1/2” steel pipe
O.D. 2.0” (50.8 mm)
8
14
8K4-SCI12-*
14K4-SCI12-*
Silicon carbide
Single tube, Isopressed over a 3/4” steel pipe
O.D. 2.0” (50.8 mm)
8
14
8K4-SCI34-*
14K4-SCI34-*
Silicon carbide
Single tube, O.D. 1 3/4” (44.5 mm)
FSC2412 cast iron fitting,
3 stainless steel screws.
8
14
8K4-SCF-*
14K4-SCF-*
* Add required thermocouple length. Multiples of 6” (152.4 mm) starting at 12” are in stock.
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Straight Assemblies - Ceramic Tubes - Types E, J, K & N - Screw Cover Heads
Page 16
Phone: 617.527.4385 Fax: 617.964.3746 Email:
sales@asrichards.com