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Miniature Thermocouple Assemblies have a maximum service temperature of 1300° F (700°C) depending on the type and guage of the
thermocouple wire used. They have limited use at higher temperatures due to the types of insulation used in theri construction. Miniature
thermocouples are more felexible than MGO (Swaged) types. 1/8”, 3/16” and 1/4” O.D. tube assemblies are made with silicon impregnated
fiberglass elements.
!
Note:
If you would like to order a Type E, J, N, or Type T assembly, just substitute the “
K
“ with a “
E
“, “
J
“, “
N
“, or “
T
” in the part numbers
listed on this page. Double element assemblies are also available. Add a ”
D
” to the part number.
Example:
20K4DM-9M4-48-SH.
Probes can
also be made with Types: B, R, and S, phone for details. Sheaths can be made of other materials and sizes - see page on “Miniature Tubes”.
Application
Wire
Gauge
Outside Diameter
Inches mm
Type K
1
Miniature, Hex Fitting
Miniature Thermocouple Assemblies with a hex fitting (
HX
) are used where a
stainless steel 1/2” x 1/2” NPT fitting is desirable for mounting to the process and
connection head. The hex fittings are welded to the tube for strength and proper
sealing. A grounded junction is standard to help prevent the element from pulling
out of the tube. The elements in hex fitting assemblies are made with silicon im-
pregnated fiberglass insulated wire.
16
20
20
24
1/4 1/4
3/16
1/8
6.4
6.4
4.8
3.3
16K4M-G-9M4-HX-*
20K4M-G-9M4-HX-*
20K4M-G-9M3-HX-*
20K4M-G-9M2-HX-*
2
Miniature, Hex, Standard Head (SH) - Aluminum
A floating junction, stainless steel 1/2” x 1/2” NPT hex fitting, and (
SH
)
style
aluminum weather resistant head are all standard.
16
20
20
24
1/4 1/4
3/16
1/8
6.4
6.4
4.8
3.3
16K4M-G-9M4-HX-*-SH
20K4M-G-9M4-HX-*-SH
20K4M-G-9M3-HX-*-SH
20K4M-G-9M2-HX-*-SH
3
Miniature, Standard Head (SH) - Aluminum
A floating junction, stainless steel compression fitting (
CF
)
, bushing, and (
SH
)
style aluminum weather resistant head are all standard.
16
20
20
24
1/4
1/4
3/16
1/8
6.4
6.4
4.8
3.3
16K4M-G-9M4-*-SH
20K4M-G-9M4-*-SH
20K4M-G-9M3-*-SH
20K4M-G-9M2-*-SH
4
Miniature, Hex, Nylon Head (NH)
A floating junction, stainless steel 1/2” x 1/2” NPT hex fitting, and (
NH
)
style
aluminum weather resistant head are all standard.
16
20
20
24
1/4
1/4
3/16
1/8
6.4
6.4
4.8
3.3
16K4M-G-9M4-*-NH
20K4M-G-9M4-*-NH
20K4M-G-9M3-*-NH
24K4M-G-9M2-*-NH
5
Miniature, Open Terminal (OTH)
Miniature Open Terminal (
OTH
) Assemblies are used in clean environment
applications where the terminals can be exposed for easy access or low profile
situations. 3/26” diameter tubes and floating junction are standard. The elements
are made from silicon impregnated fiberglass insulated wire.
20
20
24
1/4
3/16
1/8
6.4
4.8
3.3
20K4M-G-9M4-*-OTH4
20K4M-G-9M3-*-OTH3
20K4M-G-9M2-*-OTH2
6
Miniature, Molded Handle (MH)
Molded Handle (
MH
) assemblies are made with a plastic grip. The leads are
covered with stainless steel overbraid for protection and the standard termination
is a flat pin male mini connector. Floating junction is standard.
16
20
20
24
30
1/4 1/4
3/16
1/8
1/16
6.4
6.4
4.8
3.3
1.6
16K4M-G-9M4-MH-Y-Z
20K4M-G-9M4-MH-Y-Z
20K4M-G-9M3-MH-Y-Z
24K4M-G-9M2-MH-Y-Z
30K4M-G-9M1-MH-Y-Z
* Add required thermocouple length. Multiples of 6” (152.4 mm) starting at 12” are in stock. Note: * = Probe length in figures shown.
Thermocouples - Miniature Assemblies with Hex Fittings and Heads
Page 36
Phone: 617.527.4385 Fax: 617.964.3746 Email:
sales@asrichards.com