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Thermocouple and RTD Protection Heads

NB, HEPTX and NXT Series

Thermocouple Heads | Protection Heads |RTD Heads | NB, HEPTX and NXT Series

Thermocouple Heads | Protection Heads |RTD Heads

See All Models Below

  • NB1 - Cast Iron
  • NB2 - Burnished Die Cast Aluminum
  • NB4 - Miniature Aluminum
  • NEPA & NEPB - Explosion Resistant
  • NSA, NSB & NSC - Cast Iron
  • NEP-T - Cast Iron with Aluminum Cap Exposion Resistant
  • HEP-TX - Feraloy Iron Alloy
Thermowells and Head and Well Assemblies - View related products

Description

OMEGA offers a wide range of thermocouple heads from cast iron to Feraloy Iron Alloy.
Material Type Model No. Terminals Wt.
(oz)
Threaded Openings Features
Protection
Tube Entry
Extension
Wire Entry
Cast Iron NB1 NB1-0
NB1-2
NB1-4
0 = no terminal block
2 = single element
4 = duplex element

max. 14 gage wire
22
23
24
1/2" NPT 1/2" NPT * Rugged construction
* Screw cover with inside thread
* Moisture and dust resistant
* Ideal for outdoor use
Burnished
Die Cast
Aluminum
NB2 NB2-0
NB2-2
NB2-4
0 = no terminal block
2 = single element
4 = duplex element

max. 14 gage wire
5
6
6-1/2
1/2" NPT
Standard
1/2" NPT
w/compression
fitting for 1/8" to
1/4"O.D. wire
* Small and Lightweight
* Good corrosion resistance
* Gasketed, weather resistant
* Burnished finish
* Safety chain on cover
Cast
Aluminum
Body and
Cap
NEPA NEPA-0
NEPA-2
NEPA-4
0 = no terminal block
2 = single element
4 = duplex element

max. 14 gage wire
16-1/2
17-3/4
18-1/4
3/4" NPT 3/4" NPT * Explosion resistant head
* Rated for: Class III
 Class I, Group C, D
 Class II, Groups E, F, G
* Screw cover
* Moisture and dust resistant
* Safety Ideal for outdoor use
* Safety Utilizes barrier strip connector (optional)
NEPB NEPB-0
NEPB-2
NEPB-4
0 = no terminal block
2 = single element
4 = duplex element

max. 14 gage wire
21-1/2
22-3/4
23-1/4
1/2" NPT 1/2" NPT
Cast
Iron
NSA NSA-0
NSA-2
NSA-4
0 = no terminal block
2 = single element
4 = duplex element

max. 8 gage wire
42
46
48
1/2" NPT 3/4" NPT * Rugged construction
* Screw cover with inside thread
* Moisture and dust resistant
* Ideal for outdoor use
* Standard
 heavy duty head
* Cover equipped with safety
 chain (readily removed
 without tools)
NSB NSB-0
NSB-2
NSB-4
0 = no terminal block
2 = single element
4 = duplex element

max. 8 gage wire
40
44
46
3/4" NPT 3/4" NPT
NSC NSC-0
NSC-2
NSC-4
0 = no terminal block
2 = single element
4 = duplex element

max. 8 gage wire
36
40
42
1" NPT 3/4" NPT
Cast Iron
with
Aluminum
Cap
NEP-T 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)
Feraloy
with
Iron
Alloy
HEP-TX HEP-TX-0
HEP-TX-2
HEP-TX-4
HEP-TX-70
0 = no terminal block
2 = single element
4 = duplex element
70 = for mounting
TX70 Transmitter
max. 14 gage wire
62
64
64
66
1" NPT
3/4" NPT
1" NPT
3/4" NPT
* Explosion resistant head
for 2-wire transmitter
* Rated for
 Class I,
 Div 1&2, Groups C, D
 Class III
Class II, Div 1
Groups E, F, G, Class III
* Moisture and dust resistant
* Ideal for outdoor use
* Utilizes barrier strip
 connector (optional)

Note: NEMA 4X rated Heads Available. Please consult our Technical Quotations Department.
(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Qty
Description
Cast Iron
  
NB1-0
TWD1,446
Availability: 5 weeks
 
No terminal block, protection tube entry 1/2" NPT, extension wire entry 1/2" NPT
NB1-2
NB1-2
TWD1,637
Availability: 1 week
 
Single element, protection tube entry 1/2" NPT, extension wire entry 1/2" NPT
  
NB1-4
Consult Sales  
Availability: 
 
 
Duplex element, protection tube entry 1/2" NPT, extension wire entry 1/2" NPT
Brunished Die-Cast Aluminum
  
NB2-0
TWD1,450
Availability: 5 weeks
 
No terminal block, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
NB2-2
NB2-2
TWD1,637
Availability: 5 weeks
 
Single element, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
NB2-4
NB2-4
TWD1,765
Availability: 5 weeks
 
Duplex element, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
Aluminum
  
NB3-0
TWD1,577
Availability: 5 weeks
 
No terminal block, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
NB3-2
NB3-2
Consult Sales  
Availability: 
 
 
Single element, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
  
NB3-4
Consult Sales  
Availability: 
 
 
Duplex element, protection tube entry 1/2" NPT standard, extension wire entry 1/2" NPT
Aluminum - miniature head
  
NB4
TWD1,670
Availability: 5 weeks
 
Duplex element, protection tube entry M10x1 (works with 1/8" NPT), extension wire entry M15x0.75 with compression fitting
Cast Aluminum Body and Cap
  
NEPA-0
TWD5,255
Availability: 5 weeks
 
No terminal block, protection tube entry 3/4" NPT, extension wire entry 3/4" NPT
  
NEPA-2
TWD5,425
Availability: 5 weeks
 
Single element, protection tube entry 3/4" NPT , extension wire entry 3/4" NPT
  
NEPA-4
TWD5,590
Availability: 6 weeks
 
Duplex element, protection tube entry 3/4" NPT, extension wire entry 3/4" NPT
Rugged Cast Iron with Chain
  
NSB-0
TWD3,150
Availability: 5 weeks
 
No terminal block, protection tube entry 3/4" NPT, extension wire entry 3/4" NPT
  
NSB-2
TWD3,325
Availability: 5 weeks
 
Single element, protection tube entry 3/4" NPT, extension wire entry 3/4" NPT
  
NSB-4
TWD3,630
Availability: 5 weeks
 
Duplex element, protection tube entry 3/4" NPT, extension wire entry 3/4" NPT
Glass Reinforced Nylon
  
NB9-2
Consult Sales  
Availability: 
 
 
Single element, protection tube entry 1/2" NPT, extension wire entry 1/2" NPT
All prices on this site are shown in Taiwan Dollars.
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. Check transmitter dimensions identified by individual product specifications as well as the internal dimensions for the head.
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