Watlow XACTPAK 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
72
3. Sheath O.D. (inch)
J = 0.250
4. Connection Head
C = Polypropylene (
1
2 inch NPT thermocouple
opening only)
D = Small cast iron
E = Small aluminum
H = Explosion proof (1⁄2 inch NPT and 3⁄4 inch NPT
thermocouple opening only)
5. Cold End Configuration
1 = Type 1, six inch nipple-union-nipple
2 = Type 2, four inch nipple-union 3 = Type 3, three inch nipple 4 = Type 4, no extensions Note: Steel nipple and unions are standard.
6. Enter “0”
7. Sheath Material
A = 304 SS
F = 316 SS Q = Alloy 600 (Type K)
8-9. Sheath Length “L” (whole inch)
Available lengths: 01 to 99, over 99 consult factory
10. Sheath Length “L” (fractional inch)
0 = Not required, complete assembly 1=
1
8 3=3⁄8 5=5⁄8 7=7⁄8
2=1⁄4 4=1⁄2 6=3⁄4
11. Junction
Grounded Ungrounded Single GU Dual, isolated W
12. Calibration
EJKNT Standard limits E JKNT Special limits 2 3 4 8
13. Enter “0”
14. Spring-Loading
Y = Yes
N=No
15. Special Requirements
0 = None
X = Special requirements, consult factory
AT 00
123456789101112131415
Thermocouples
Mineral Insulated
For Use With Thermowells Style AT
Note: For a complete sensor, add thermowell
part number to the 15-digit AT part number. For sheath length use “AR” (as required) and factory will determine correct length. See thermowell section, pages 144 to 146.
See the hardware section, pages 156 to 157, for a complete description of Watlow connection heads.
Custom Ordering InformationItems in Bolded Green Type are preferred
with shorter lead times.
J
6 inch N-U-N Typical (2 each 1⁄2 x 3 inch steel pipe nipples and 1 each malleable union)
4 inch N-U typical (1 each
1
2 x 3 inch steel pipe
nipple and 1 each malleable union)
3
/4
in. (19 mm) NPT
Nom. 4 in. (152.4 mm)
L
1
2 X 3 inch long steel pipe nipple typical
3
/4
in. (19 mm)
NPT
Nom. 2 in. (50.8 mm)
L
3
/4
in. (19 mm)
NPT
L
3
/4
in. (19 mm) NPT
Nom. 6 in.
(152.4 mm)
L
Type 1
Type 2
Type 3
Type 4
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