Thermocouple
Heads
NBN / NBG / NBB / NBS / NEP-T / NXT /
HEP-TX
NBN
Nylon
|
NBS
Cast Aluminum
|
NBG
Bakelite Glass Fiber
 |
NXT
Aluminum
|
NBB
Die Cast Aluminum
 |
HEPTX
Feraloy Iron Alloy
|
NEP-T
Cast Iron with Aluminum Cap Explosion Resistant
|
| Dimensions
Shown in mm (in) |
To Order (Specify
Model No.)
| Material |
Type |
Model
No. |
|
Nylon
|
NBN
|
NBN-0
NBN-2
NBN-4
|
|
Bakelite
Glass Fiber
|
NBG
|
NBG-0
NBG-2
NBG-4
|
|
Die
Cast Aluminum
|
NBB
|
NBB-0
NBB-2
NBB-4
|
|
NBS
Cast Aluminum
|
NBS
|
NBS-0
NBS-2
NBS-4
|
|
Cast
Iron with Aluminum Cap
|
NEP-T
|
NEP-T0
NEP-T2
NEP-T4
|
|
Aluminum
|
NXT
|
NXT-0
NXT-2
NXT-4
|
|
Feraloy
Iron Alloy
|
HEP-TX
|
HEP-TX-0
HEP-TX-2
HEP-TX-4
HEP-TX-70
|
Note:
Barrier strips are utilized when more than four connections
are required. e.g.: dual element 3-wire RTD. Transmitter may
be mounted in most heads. Transmitter may not be mounted in
NB4 and only the smallest transmitters can fit the NB2 head
by special order.
*Note:
The use of explosion resistant heads does not imply that
a complete assembly is either explosion proof or intrinsically
safe. It is the user’s responsibility to determine suitability
of materials for an installation.
| Model
# |
Terminals |
Wt.
(oz) |
Threaded
Openings |
Features |
| Protection
Tube Entry |
Extension
Wire Entry
|
|
NBN-0
NBN-2
NBN-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
3
4
5
|
1/2"
NPT
|
Supplied
with nylon bushing for plastic covered extension wire
to . .240" -.400" O.D.
|
•
Easy acccessibility to terminal block
• Suitable for use in ambient temperatures to121°C (250°)°F
• Moisture and dust-resistant
• Ideal for chemical plant use
• Excellent corrosion resistance
• Very light weight |
|
NBG-0
NBG-2
NBG-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
6
7
8
|
1/2"
NPT
|
1/2"
NPT
|
•
Noncombustible
• Heat proof
• Acid resistant
• Alkali resistant |
|
NBB-0
NBB-2
NBB-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
6
7
8
|
1/2"
NPT
|
1/2"
NPT
|
•
Good corrosion resistance
• Lightweight
• Bayonet cover readily removed without tools
• Easy accessiblity to terminal block
• Moisture and dust-resistant
|
|
NBS-0
NBS-2
NBS-4
|
0=no
terminal block
2=single element
4=duplex element
max. 8 gage wire
|
|
1/2"
NPT
|
1/2"
NPT
|
•
Good corrosion resistance
• Lightweight
• Cover, equipped with safety chain, readily removed
without tools
• Moisture and dust-resistant |
|
NEP-T0
NEP-T2
NEP-T4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
75
76
76
|
1/2"
NPT
|
1/2"
NPT
|
•
Explosion resistant head
• Rated for Class I, Group C, D Class II, Groups E,
F, G Class III
• Screw cover with inside thread
• Moisture and dust resistant
• Ideal for outdoor use
• Utilizes barrier strip connector (optional) |
|
NXT-0
NXT-2
NXT-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
11
12 1/4
12 3/4
|
1/2"
NPT
|
1/2"
NPT
|
•
Hinge top
• Tall cover
• Ideal for big transmitters
• Utilizes barrier strip connector (optional) |
|
HEP-TX-0
HEP-TX-2
HEP-TX-4
HEP-TX-70
|
0=no
terminal block
2=single element
4=duplex element
|
62
64
64
|
1"
NPT
|
1"
NPT
|
•
Explosion resistant head for 2-wire transmitter
• Rated for: Class I, Div 1&2, Groups C, D Class II,
Div 1 Groups E, F, G, Class III
• Moisture/dust-resistant
• Utilizes barrier strip connector (optional) |
|
70=for mounting TX70 Transmitter
max. 14 gage wire
|
66
|
3/4" NPT
|
3/4" NPT
|
Bi-Metal
Thermometers for Head & Well Assemblies
Model J (Shown)
| Features |
 |
Head Can Be Tilt-Adjusted Through a Full 90° Angle
|
|
All
Stainless Steel Welded Construction
|
|
External
Recalibration |
|
Rust
and Corrosion Proof, Leakproof, Hermetically Sealed |
|
Sensitive
Bi-Metal Element Silicone |
|
Dampened
for Minimum Pointer Vibration and Maximum Heat Transfer
|
|
Accuracy
– 1% of Range |
|
Use
of Thermowell Is Recommended for Pressure Applications |
|
Overrange
Protection – 50% Up to 500°F |
|
|
Ceramic Fiber Insulated Thermocouple
Elements for Head & Well Assemblies
| Features |
|
Standard 12" Long Thermocouple Elements |
|
Insulation
Temperature Rating Up to 2200°F |
|
Available
In Type K, E and J Calibrations |
| AWG
Wire Size |
Type
K Temp. Range -300 to 2300°F |
|
14
|
XC-14-K-12
|
|
20
|
XC-20-K-12
|
|
24
|
XC-24-K-12
|
| AWG
Wire Size |
Type
E Temp. Range -300 to 2300°F |
|
14
|
XC-14-E-12
|
|
20
|
XC-20-E-12
|
|
24
|
XC-24-E-12
|
| AWG
Wire Size |
Type
J Temp. Range -300 to 2300°F |
|
14
|
XC-14-J-12
|
|
20
|
XC-20-J-12
|
|
24
|
XC-24-J-12
|
|
|
|
|
|
† All dollar amounts on this site are shown in US currency.
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Part Number Builder |
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Option Descriptions
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(1)
|
Head Type
|
| |
Select
NBN for nylon
NBG for bakelite glass fiber
NBB for die-cast aluminum
NBS for cast aluminum
NEP for cast iron with aluminum cap
NXT for tall cover hinge top aluminum
HEP-TX for Feraloy Iron Alloy
|
(2)
|
Terminal Block Type
|
| |
Select
-0 for no terminal block
-T0 for NEP only, no terminal block
-2 for single element
-T2 for NEP only, single element
-4 for dual element
-T4 for NEP only, dual element
70 for HEP-TX only, for mounting TX70 transmitter
|
| NOTE: All combinations may not be valid, check spec sheet for valid part numbers. |
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Keywords:Thermocouple Heads, models NB1, NB4, NB2, NSA, NSB, NSC, NB3, NEPA and NEPB
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