Watlow Thermocouples Data sheet
W A T L O W
63
Thermocouples
Mineral Insulated
Watlow’s mineral insulated thermocouples are fast-responding,
durable, and capable of handling
high temperatures.
These thermocouples are manufactured with best-in-class
XACTPAK®, Watlow’s trademark for
metal sheathed, mineral insulated
(MI) thermocouple material.
XACTPAK responds fast because the
protective metal outer sheath allows
the use of smaller diameter
thermocouple conductors. The rock
hard compacted MgO insulation
further enhances the sensor’s ability
to “read” temperature by transferring
heat quickly to the measuring
junction.
The XACTPAK protecting sheath and
compacted insulation outperforms
bare wire thermocouples in most
applications.
Performance Capabilities
• Easily handles temperatures up
to 1200°C (2200°F)
• Meets or exceeds initial calibration
tolerances per ASTM E 230
Features and Benefits
Special mineral insulation
• Protects thermocouple from
moisture and thermal shock
• Permits operation in high
temperature, high pressure
environments
Diameters as small as 0.010 in.
(0.25 mm)
• Ideal when physical space or
extremely fast response are
critical
Flexibility of the XACTPAK
material
• Allows you to form and bend the
thermocouple, without risk of
cracking, to meet your design
requirements
Outer sheath
• Protects the wires from oxidation
and hostile environments
Wide range of sheath materials,
diameters, and calibrations
• Meet specific requirements
In-house manufacturing of
XACTPAK material
• Rigid quality control procedures
• Assures high standards are met
• Single source reliability
Custom capabilities
• Include options such as special
lead lengths, lead wires and
terminations
Applications
• Heat treating
• Furnaces/kilns
• Turbines
• Bearing temperature
• Power stations
• Steam generators
• Diesel engines
• Nuclear reactors
• Atomic research
• Jet engines and test cells
• Rocket engines
• Semiconductor manufacturing
• Refineries/oil processing
• Catalytic reformers
• Food processing
Thermocouples
66
Rapid Ship sensors come with standard male thermocouple connector directly attached to sheath,
Type J or K, ungrounded junction, 0.125, 0.188 or 0.250 inch diameter and six or 12 inch sheath length.
Rapid Ship Sensors
3. Sheath O.D. (inch)
D = 0.040 H = 0.188
E = 0.063 J = 0.250
G = 0.125
4. Connector Type
Standard Plugs and Jacks 218°C (425°F)
A = Standard plug
B = Standard jack
C = Standard plug with mating connector
High Temperature Plugs and Jacks 540°C (1000°F)
(0.250 inch maximum O.D.)
L = High temperature plug
M = High temperature jack
N = High temperature plug with mating connector
5. Fittings, Weld Pads
If required, enter order code from pages 39-40.
If none, enter “0’’.
6. Enter “0’’
7. Sheath Material
A = 304 SS Q = Alloy 600 (Type K)
F = 316 SS
C = PFA coated over SS (available on G, H, J diameters)
8-9. Sheath Length “L’’ (whole inches)
04, 06, 12, 18, 24
Available lengths: 01 to 99, over 99 consult factory
Maximum length for PFA coating is 48 inches.
10. Sheath Length “L’’ (fractional inch)
0 = 0 2 = 1⁄4 4 = 1⁄2 6 = 3⁄4
1 = 1⁄8 3 = 3⁄8 5 = 5⁄8 7= 7⁄8
11. Junction
Grounded Ungrounded Exposed
Single GUE
Dual H W (isolated) D (isolated)
12. Calibration
EJKNT
Standard limits E JKN T
Special limits 2 3 4 — 8
13-14. Enter “00’’
15. Special Requirements
0 = None
X = Special requirements, consult factory
Thermocouples
Mineral Insulated
Standard Plug or Jack
Termination
Style AC
L
AC 0 0
123456789101112131415
0
Custom Ordering Information—Items in Bolded Green Type are preferred
with shorter lead times.
Sheath Sheath Length
Sheath Diameter in. (mm)
Calibration Material in. (mm) 6 (152) 12 (305)
0.125 (3.2) ACGA00F060UJ000 ACGA00F120UJ000
J 316 SS 0.188 (4.8) ACHA00F060UJ000 ACHA00F120UJ000
0.250 (6.4) ACJA00F060UJ000 ACJA00F120UJ000
0.125 (3.2) ACGA00Q060UK000 ACGA00Q120UK000
K Alloy 600 0.188 (4.8) ACHA00Q060UK000 ACHA00Q120UK000
0.250 (6.4) ACJA00Q060UK000 ACJA00Q120UK000
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