Durex' TDC style mineral insulated thermocouple probes are manufactured with compacted magnesium oxide (MgO) insulation housed in a stainless steel or alloy sheath that protects the thermocouple element from the application's environment. This construction provides an incredibly durable temperature sensor that can be adapted to a wide variety of applications. Operating temperatures up to 2400°F (1315°C).
The TDC3 style thermocouple features a mineral insulated (MgO) element with universal disconnect plug for reliable connections. Plugs are available in standard high-temperature 800ºF (426°C), and ceramic 1200ºF (648°C) materials.
Part Number Configuration - Example: TDC3-JG-4F12F-3
TDC3 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - Terminal Connector
The TDC4 style thermocouple features a mineral insulated (MgO) element with a protective terminal housing and process connector. This style temperature sensor can be manufactured as spring loaded for direct field replacement into existing thermowells.
Part Number Configuration - Example: TDC4-JG-6C060-61A0
TDC4 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - Process Fitting Connectors + Spring Loaded Option + Terminal Heads + Probe Fittings
The TDC5 style thermocouple features a mineral insulated (MgO) element with an open terminal disc design. This temperature sensor design allows greater accessibility in wiring for space restricted areas.
Part Number Configuration - Example: TDC5-JG-4D09D-K
TDC5 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - Terminal Connector
The TDC6 style thermocouple temperature sensor features a mineral insulated (MgO) element that is terminated to an insulated extension lead wire and straight sheath, TDC7 style with a 45° bent sheath, TDC8 style a 90° bent sheath. An optional terminal connector can be added to the thermocouple extension wire.
Part Number Configuration - Example: TDC6-TG-6D08M-024C0M
TDC6 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - "A" Dimension + Leadwire Construction + Terminal Connector + Potting Requirements
Part Number Configuration - Example: TDC7-TG-6D08M-024C0M
TDC7 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - "A" Dimension + Leadwire Construction + Terminal Connector + Potting Requirements
Part Number Configuration - Example: TDC8-TG-6D08M-024C0M
TDC8 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - "A" Dimension + Leadwire Construction + Terminal Connector + Potting Requirements
The TDC9 style thermocouple features a mineral insulated (MgO) element that is terminated to an insulated extension lead wire and encapsulated in a plastic injection molded “mini” transition using insert mold technology and a Liquid Crystal Polymer. The transition can withstand continuous exposure to temperatures up to 562°F (294°C).
Part Number Configuration - Example: TDC9-TG-6T08M-024A0L
TDC9 - TC Type + Junction - Sheath Material + Sheath Diameter + "L" Dimension - "A" Dimension + Leadwire Construction + Terminal Connector
ANSI Letter
Durex Code and Calibration
Calibration Description
Type E Thermocouple
E
Standard Limits 32°F to 1652°F (0°C to 900°C) 1.7°C or 0.5% Tol.
2
Special Limits 32°F to 1652°F (0°C to 900°C) 1.0°C or 0.4% Tol.
Type J Thermocouple
J
Standard Limits 32°F to 1382°F (0°C to 750°C) 2.2°C or 0.75% Tol.
3
Special Limits 32°F to 1382°F (0°C to 750°C) 1.1°C or 0.4% Tol.
Type K Thermocouple
K
Standard Limits 32°F to 2282°F (0°C to 1250°C) 2.2°C or 0.75% Tol.
4
Special Limits 32°F to 2282°F (0°C to 1250°C) 1.1°C or 0.4% Tol.
Type T Thermocouple
T
Standard Limits 32°F to 662°F (0°C to 350°C) 1.0°C or 0.75% Tol.
8
Special Limits 32°F to 662°F (0°C to 350°C) 0.5°C or 0.4% Tol.
Code
Single Junction
Dual Junction
G
Grounded
H
U
Ungrounded
L
Ungrounded Isolated
C
Exposed
V
Ungrounded Common
W
Sheath Material Type
1
310 Stainless Steel
321 Stainless Steel
330 Stainless Steel
304 Stainless Steel
5
446 Stainless Steel
6
316 Stainless Steel
7
347 Stainless Steel
Inconel® 600 (Alloy 600)
A
Alloy 601
O.D. Size
.020” O.D.
Y
.032" or 1/32" O.D.
.040" O.D.
.062” or 1/16” O.D.
B
.125” or 1/8” O.D.
.156” or 5/32” O.D.
.188” or 3/16” O.D.
D
.250” or 1/4” O.D.
.313” or 5/16” O.D.
F
.375” or 3/8” O.D.
.500” or 1/2” O.D.
Sheath Code
Sheath Diameter
.020"
.032"
.040"
.062"
.125"
.156"
.188"
.250"
.313"
.375"
.500"
Wire Gauge
38
34
33
30
24
22
20
18
16
15
11
Maximum Length
100'
150'
200'
400'
250'
175'
55'
40'
30'
“L” Dimensions & “U” Dimensions
“A” Dimensions
Fractional Dimension Letter Code
“L” and “U” dimensions are specified in whole inches
and use a letter Code for the fraction.
(Enter 0 when there is no fraction)
Enter the three digit code per examples below:
“A” dimensions are specified
in whole inches only.
Enter the three digit code as follows:
1/16"
11/16"
1/8"
3/4"
M
3/16"
13/16"
N
1/4"
7/8"
P
5/16"
15/16"
R
3"
030
10 5/8"
10K
3/8"
1"
S
4 1/2"
04H
12"
120
9"
009
7/16"
0
No
6 1/4"
06D
15 3/8"
15F
012
1/2"
7 7/8"
07P
17 3/4"
17M
36"
036
9/16"
9 5/8"
09K
22 1/8"
22B
144"
144
5/8"
Termination Style
Thermocouple Style
Split Leads, 2” Length Standard
TDC6, TDC7, TDC8, TDC9
#6 Spade Lugs
Standard Molded Plug
TDC3, TDC6, TDC7, TDC8, TDC9
Standard Molded Jack
Standard Plug with Brazing Adapter
TDC3
Standard Plug with Tube Adapter
High Temperature Plug with Crimp Adapter
9
Ceramic Plug with Tube Adapter
Mini Molded Plug
Circular Terminal Block, Ceramic
TDC5
Circular Terminal Block, Glass Cloth
Mini Plug with Crimp Adapter
TDC3, TDC6, TDC7, TDC8
Mini Jack
TDC6, TDC7, TDC8
X
Special, Specify
TDC3, TDC5, TDC6, TDC7, TDC8, TDC9
Process Size
No Process Connection
½” NPT Stainless Steel Hex Nipple
¾” NPT Stainless Steel Hex Nipple
½" NPT Brass Hex Bushing
½" NPT Stainless Steel Hex Bushing
Screw Cover Head Materials
1/2 ” NPT Conduit, Aluminum Head
3/4” NPT Conduit, Aluminum Head
1/2” NPT Conduit, Cast Iron Head
3/4” NPT Conduit, Cast Iron Head
1/4” NPT Conduit Connection, Miniature Plastic Head
1/2” NPT Conduit, Grey Delrin Head
3/4" NPT Conduit, Grey Delrin Head
1/2” NPT Conduit, White Polypropylene Head
3/4" NPT Conduit, White Polypropylene Head
Z
1/2” NPT Conduit, Explosion Proof Aluminum Head
3/4” NPT Conduit, Explosion Proof Aluminum Head
Insulation Type
Conductor Type
Standard
Stainless Steel Overbraid
Stainless Steel Armor
Fiberglass
Solid
Teflon
Stranded
Kapton
Q
PVC
Probe Tip Style
Fixed Fitting
Spring Loaded Fitting
Fitting Options - Probe
1/8" NPT Compression Fitting Brass
1/8" NPT Compression Fitting Stainless Steel
1/4" NPT Compression Fitting Brass
1/4" NPT Compression Fitting Stainless Steel
3/8" NPT Compression Fitting Brass
3/8" NPT Compression Fitting Stainless Steel
1/2" NPT Compression Fitting Stainless Steel
Maximum Temperatures
500°F
1000°F
Spec Sheets - Mineral Insulated Thermocouples 0115-300KB Industrial Thermocouples Catalog 0115-1MB Thermocouples Catalog 0115-2MB Temperature Sensors Catalog 0115-4MB Temperature Sensor Element Selection Guide 200KB Technical Data - Thermocouple Wire Code Standards 0115-250KB
