Industrial Thermocouples
Protection Head Design
Available as
U Sheath Materials:
304SS, 310SS, 316SS,
321SS, Inconel® or
Super OMEGACLAD® XL
U Probe Length 300
mm (12"), 600 mm
(24")
Custom Lengths
Available, Consult Sales
Probe length
includes
approximately
12.5 mm (1⁄2")
allowance for
threads.
76 mm (3.0")
83 mm
92 mm
(3.63")
(3.25")
NB1, Cast Iron NB2, Aluminum
104 mm (4.1")
48 mm (1.9")
57 mm (2.25")
Note: All industrial
heads shown are
available for
purchase
separately. Please
visit omega.com
Available!
Probes with
Built-In Transmitters!
Please visit
omega.com
Length
1
⁄2 NPT
mounting
threads
(3.3")
83 mm
25 mm
(1")
NB3, Aluminum
with Snap-Lock
53 mm
(2.1")
15 mm
(0.6")
NB4, Sub-Miniature
Aluminum
260S Series
For a complete selection of thermowells in both Standard
and Metric dimensions, please visit omega.com
Complete your application
with OMEGA’s extension wire.
Please visit omega.com
260HL Series
A-131
New and Improved
Protection Heads
Industrial Thermocouple Probes
C
Available!
H
Domed
Top
1
⁄2 NPT
mounting
threads.
Probes with
Built-in Transmitters!
Please visit omega.com
Cast Iron
Material: Cast iron
Weight: 1.6 kg (3.5 lb)
Dimensions:
H=95 mm (3.8")
C=86 mm (3.4")
NB5
Available as
A
Probe length
includes approx
1
⁄2" allowance
for threads.
Ordering Example:
NB8-ICSS-18U-12,
a 300 mm (12")
ungrounded ICSS
Type J stainless
steel thermocouple,
3 mm (1⁄8") sheath
diameter probe
with an NB8 protection
head.
Deep Base
NB6
Material: Alloy-Aluminum
Weight: 250 g (8.8 oz)
Dimensions:
H=82 mm (3.2")
C=82 mm (3.2")
NB8
Material:
Alloy-Aluminum
Weight:
230 g (8 oz)
Dimensions:
H=86 mm (3.4")
C=70 mm (2.8")
Flip Top
NB7
Material: Alloy-Aluminum
Weight: 250 g (8.8 oz)
Dimensions:
H=93 mm (3.7")
C=76 mm (3")
A-132
Industrial Thermocouple
Protection Head Probe Assemblies
Available as
Miniature
Bakelite
NB10
Material: Bakelite
Weight: 82 g (2.9 oz)
Dimensions:
H=68 mm (2.7")
C=61.5 mm (2.4")
O-Ring Seal
Low Profile
NB12
Material:
Alloy-Aluminum
Weight: 274 g (9.7 oz)
Dimensions:
H=87 mm (3.4")
C=82 mm (3.2")
IP67 Approval
H
Nylon and
Glass Fiber.
C
NB9
Material: Nylon
& Glass Fiber
Weight:
144 g (5 oz)
Dimensions:
H=87 mm (3.4")
C=82 mm (3.2")
Available!
Probes with
Built-In Transmitters!
Please visit
omega.com
Miniature
Aluminum
NB11
Material: Alloy-Aluminum
Weight: 140 g (4.9 oz)
Dimensions:
H=67 mm (2.6")
C=62 mm (2.4")
IP67 Approval
To Order:
Insert the style
number into the part
numbers shown in
the “How To Order”
table. See ordering
examples below and
on next page.
Ordering Example:
NB9-CASS-18G-12,
a 300 mm (12")
grounded CASS
Type K stainless
steel thermocouple,
3 mm (1⁄8") sheath
diameter probe with
an NB9 protection
head.
Length
A-133
U NB1 Cast-Iron Protection
Head with Internal
Terminal Block
U NB2 Miniature Aluminum
Head with Internal
Terminal Block
U NB3 Aluminum Head
Features Convenient
Snap-Lock Design with
Internal Terminal Block
U NB4 Subminiature
Aluminum Head with
Internal Terminal Block
1
⁄2 NPT Mounting Thread
U
U 12" Length Standard
†
Standard Dimensions
The industrial-style assemblies
offer a variety of protection heads
to meet the environmental and size
requirements of most applications.
They are available in J, K T, E,
or N calibrations, with 304 SS,
310 SS, 316 SS, 321 SS, Super
OMEGACLAD® XL, or Inconel®
sheathing. Standard lengths are
12", including 1⁄2" for the pipe thread,
with other lengths available. Both
the thread on the probe and the
extension-wire opening are 1⁄2
NPT. The NB2 and NB4 include a
compression fitting nut and rubber
ferrule for 1⁄8 to 1⁄4" OD wires or
tubing. The internal terminal block
is standard on all models.
PFA Coating
Available.
Consult Sales
To Order 12" Lengths Visit omega.com/nb1-icin_indust_tc for Pricing and Details
Alloy/ANSI Sheath Dia. Grounded Ungrounded Exposed
Color Code (inch) Junction Junction Junction
Iron-
Constantan
Inconel
®
Sheath
Iron Constantan
304 SS
Sheath
®
CHROMEGA
ALOMEGA
Inconel
- **
®
®
Sheath
®
CHROMEGA
ALOMEGA
- **
®
304 SS
Sheath
®
CHROMEGA
Constantan
Inconel
-
®
Sheath
®
CHROMEGA
-
Constantan
304 SS
Sheath
Copper-
Constantan
Incone
®
Sheath
Copper-
Constantan
304 SS
Sheath
®
OMEGAALLOY
-
NICROSIL-NISIL
Inconel
Sheath
Note: PFA coating is available, 400°F (204°C) max. † Other lengths available, consult Sales Department.
Insert the number “1” through “12” for NB1, NB2, NB3, NB4, NB5, NB6, NB7, NB8, NB9, NB10, NB11 or NB12 heads, respectively.
*
For highest temperature and stability rating, change “SS” or “IN” to “XL” for additional cost.
**
To order probes with lengths other than 12", change the last 2 digits of the model number from “12” to the desired length in inches, and add the
appropriate price per additional foot from the last column.
To order with 310, 316 or 321 SS sheath, change “SS” in model number to “310SS”, “316SS” or “321SS”, respectively, no additional charge.
Consult Sales for lengths between 2 and 12", or for lengths over 24".
Ordering Examples: NB1-CASS-14G-12, 12" grounded 304 SS probe, Type K,
NB2-ICSS-14U-12, 12" ungrounded 304 SS, Type J,
1
⁄16 NB(*)-ICIN-116G-12 NB(*)-ICIN-116U-12 NB(*)-ICIN-116E-12
1
⁄8 NB(*)-ICIN-18G-12 NB(*)-ICIN-18U-12 NB(*)-ICIN-18E-12
3
⁄16 NB(*)-ICIN-316G-12 NB(*)-ICIN-316U-12 NB(*)-ICIN-316E-12
1
⁄4 NB(*)-ICIN-14G-12 NB(*)-ICIN-14U-12 NB(*)-ICIN-14E-12
1
⁄16 NB(*)-ICSS-116G-12 NB(*)-ICSS-116U-12 NB(*)-ICSS-116E-12
1
⁄8 NB(*)-ICSS-18G-12 NB(*)-ICSS-18U-12 NB(*)-ICSS-18E-12
3
⁄16 NB(*)-ICSS-316G-12 NB(*)-ICSS-316U-12 NB(*)-ICSS-316E-12
1
⁄4 NB(*)-ICSS-14G-12 NB(*)-ICSS-14U-12 NB(*)-ICSS-14E-12
1
⁄16 NB(*)-CAIN-116G-12 NB(*)-CAIN-116U-12 NB(*)-CAIN-116E-12
1
⁄8 NB(*)-CAIN-18G-12 NB(*)-CAIN-18U-12 NB(*)-CAIN-18E-12
3
⁄16 NB(*)-CAIN-316G-12 NB(*)-CAIN-316U-12 NB(*)-CAIN-316E-12
1
⁄4 NB(*)-CAIN-14G-12 NB(*)-CAIN-14U-12 NB(*)-CAIN-14E-12
1
⁄16 NB(*)-CASS-116G-12 NB(*)-CASS-116U-12 NB(*)-CASS-116E-12
1
⁄8 NB(*)-CASS-18G-12 NB(*)-CASS-18U-12 NB(*)-CASS-18E-12
3
⁄16 NB(*)-CASS-316G-12 NB(*)-CASS-316U-12 NB(*)-CASS-316E-12
1
⁄4 NB(*)-CASS-14G-12 NB(*)-CASS-14U-12 NB(*)-CASS-14E-12
1
⁄16 NB(*)-CXIN-116G-12 NB(*)-CXIN-116U-12 NB(*)-CXIN-116E-12
1
⁄8 NB(*)-CXIN-18G-12 NB(*)-CXIN-18U-12 NB(*)-CXIN-18E-12
3
⁄16 NB(*)-CXIN-316G-12 NB(*)-CXIN-316U-12 NB(*)-CXIN-316E-12
1
⁄4 NB(*)-CXIN-14G-12 NB(*)-CXIN-14U-12 NB(*)-CXIN-14E-12
1
⁄16 NB(*)-CXSS-116G-12 NB(*)-CXSS-116U-12 NB(*)-CXSS-116E-12
1
⁄8 NB(*)-CXSS-18G-12 NB(*)-CXSS-18U-12 NB(*)-CXSS-18E-12
3
⁄16 NB(*)-CXSS-316G-12 NB(*)-CXSS-316U-12 NB(*)-CXSS-316E-12
1
⁄4 NB(*)-CXSS-14G-12 NB(*)-CXSS-14U-12 NB(*)-CXSS-14E-12
1
⁄16 NB(*)-CPIN-116G-12 NB(*)-CPIN-116U-12 NB(*)-CPIN-116E-12
1
⁄8 NB(*)-CPIN-18G-12 NB(*)-CPIN-18U-12 NB(*)-CPIN-18E-12
3
⁄16 NB(*)-CPIN-316G-12 NB(*)-CPIN-316U-12 NB(*)-CPIN-316E-12
1
⁄4 NB(*)-CPIN-14G-12 NB(*)-CPIN-14U-12 NB(*)-CPIN-14E-12
1
⁄16 NB(*)-CPSS-116G-12 NB(*)-CPSS-116U-12 NB(*)-CPSS-116E-12
1
⁄8 NB(*)-CPSS-18G-12 NB(*)-CPSS-18U-12 NB(*)-CPSS-18E-12
3
⁄16 NB(*)-CPSS-316G-12 NB(*)-CPSS-316U-12 NB(*)-CPSS-316E-12
1
⁄4 NB(*)-CPSS-14G-12 NB(*)-CPSS-14U-12 NB(*)-CPSS-14E-12
1
⁄16 NB(*)-NNIN-116G-12 NB(*)-NNIN-116U-12 NB(*)-NNIN-116E-12
1
⁄8 NB(*)-NNIN-18G-12 NB(*)-NNIN-18U-12 NB(*)-NNIN-18E-12
3
⁄16 NB(*)-NNIN-316G-12 NB(*)-NNIN-316U-12 NB(*)-NNIN-316E-12
1
⁄4 NB(*)-NNIN-14G-12 NB(*)-NNIN-14U-12 NB(*)-NNIN-14E-12
1
1
⁄4" sheath diameter.
⁄4" sheath diameter.
A
A-134
Available as
U NB1 Cast-Iron Protection
Head with Internal
Terminal Block
U NB2 Miniature Aluminum
Head with Internal
Terminal Block
U NB3 Aluminum Head
Features Convenient
Snap-Lock Design with
Internal Terminal Block
U NB4 Subminiature
Aluminum Head with
Internal Terminal Block
1
U
⁄2" BSPT Mounting Thread
U 300 mm Length Standard
Metric Dimensions
The industrial-style assemblies offer
a variety of protection heads to
meet the environmental and size
requirements of most applications.
They are available in J, K T, E,
or N calibrations, with 304 SS,
310 SS, 316 SS, 321 SS, Super
OMEGACLAD® XL, or Inconel®
sheathing. Standard lengths are 300
mm, including 12 mm for the pipe
thread, with other lengths available.
Both the thread on the probe and
the extension-wire opening are 1⁄2"
BSPT. The NB2 and NB4 include a
compression fitting nut and rubber
ferrule for 3.2 to 6.3 mm OD wires
or tubing. The internal terminal block
†
is standard on all models.
To Order 300 mm Lengths Visit omega.com/nb1-icin_indust_tc for Pricing and Details
Alloy/ANSI Sheath Grounded Ungrounded Exposed
Color Code Dia. (mm) Junction Junction Junction
Iron-
Constantan
Inconel
Sheath
Iron-
Constantan
304 SS
Sheath
CHROMEGA®- **
ALOMEGA
Inconel®
Sheath
CHROMEGA
ALOMEGA
304 SS
Sheath
CHROMEGA
Constantan
Inconel
Sheath
CHROMEGA
Constantan
304 SS
Sheath
Copper Constantan
Inconel
Sheath
Copper Constantan
304 SS
Sheath
OMEGAALLOY
NICROSIL-NISIL
Inconel
Sheath
Note: PFA coating is available, 204°C (400°F) max. † Other lengths available, consult Sales Department.
Insert the number “1” through “12” for NB1, NB2, NB3, NB4, NB5, NB6, NB7, NB8, NB9, NB10, NB11 or NB12 heads, respectively.
*
For highest temperature and stability rating, change “SS” or “IN” to “XL” for additional cost.
**
To order probes with lengths other than 300 mm, change the last 3 digits of the model number from “300” to the desired length in mm, and add the
appropriate price per additional 300 mm from the last column. To order with 310 SS, 316 SS or 321 SS sheath, change “SS” in model number to
“310SS”, “316SS” or “321SS”, respectively, no additional charge. Consult Sales for lengths between 50 and 300 mm or for lengths over 600 mm.
Ordering Examples: NB1-ICSS-M60G-300, 300 mm grounded 304 SS probe, Type J, 6.0 mm sheath diameter.
NB2-CASS-M60U-300, 300 mm ungrounded 304 SS, Type K, 6 mm sheath diameter.
®
®
®
- **
®
®
-
®
®
-
®
®
-
1.5 NB(*)-ICIN-M15G-300 NB(*)-ICIN-M15U-300 NB(*)-ICIN-M15E-300
3.0 NB(*)-ICIN-M30G-300 NB(*)-ICIN-M30U-300 NB(*)-ICIN-M30E-300
4.5 NB(*)-ICIN-M45G-300 NB(*)-ICIN-M45U-300 NB(*)-ICIN-M45E-300
6.0 NB(*)-ICIN-M60G-300 NB(*)-ICIN-M60U-300 NB(*)-ICIN-M60E-300
1.5 NB(*)-ICSS-M15G-300 NB(*)-ICSS-M15U-300 NB(*)-ICSS-M15E-300
3.0 NB(*)-ICSS-M30G-300 NB(*)-ICSS-M30U-300 NB(*)-ICSS-M30E-300
4.5 NB(*)-ICSS-M45G-300 NB(*)-ICSS-M45U-300 NB(*)-ICSS-M45E-300
6.0 NB(*)-ICSS-M60G-300 NB(*)-ICSS-M60U-300 NB(*)-ICSS-M60E-300
1.5 NB(*)-CAIN-M15G-300 NB(*)-CAIN-M15U-300 NB(*)-CAIN-M15E-300
3.0 NB(*)-CAIN-M30G-300 NB(*)-CAIN-M30U-300 NB(*)-CAIN-M30E-300
4.5 NB(*)-CAIN-M45G-300 NB(*)-CAIN-M45U-300 NB(*)-CAIN-M45E-300
6.0 NB(*)-CAIN-M60G-300 NB(*)-CAIN-M60U-300 NB(*)-CAIN-M60E-300
1.5 NB(*)-CASS-M15G-300 NB(*)-CASS-M15U-300 NB(*)-CASS-M15E-300
3.0 NB(*)-CASS-M30G-300 NB(*)-CASS-M30U-300 NB(*)-CASS-M30E-300
4.5 NB(*)-CASS-M45G-300 NB(*)-CASS-M45U-300 NB(*)-CASS-M45E-300
6.0 NB(*)-CASS-M60G-300 NB(*)-CASS-M60U-300 NB(*)-CASS-M60E-300
1.5 NB(*)-CXIN-M15G-300 NB(*)-CXIN-M15U-300 NB(*)-CXIN-M15E-300
3.0 NB(*)-CXIN-M30G-300 NB(*)-CXIN-M30U-300 NB(*)-CXIN-M30E-300
4.5 NB(*)-CXIN-M45G-300 NB(*)-CXIN-M45U-300 NB(*)-CXIN-M45E-300
6.0 NB(*)-CXIN-M60G-300 NB(*)-CXIN-M60U-300 NB(*)-CXIN-M60E-300
1.5 NB(*)-CXSS-M15G-300 NB(*)-CXSS-M15U-300 NB(*)-CXSS-M15E-300
3.0 NB(*)-CXSS-M30G-300 NB(*)-CXSS-M30U-300 NB(*)-CXSS-M30E-300
4.5 NB(*)-CXSS-M45G-300 NB(*)-CXSS-M45U-300 NB(*)-CXSS-M45E-300
6.0 NB(*)-CXSS-M60G-300 NB(*)-CXSS-M60U-300 NB(*)-CXSS-M60E-300
1.5 NB(*)-CPIN-M15G-300 NB(*)-CPIN-M15U-300 NB(*)-CPIN-M15E-300
3.0 NB(*)-CPIN-M30G-300 NB(*)-CPIN-M30U-300 NB(*)-CPIN-M30E-300
4.5 NB(*)-CPIN-M45G-300 NB(*)-CPIN-M45U-300 NB(*)-CPIN-M45E-300
6.0 NB(*)-CPIN-M60G-300 NB(*)-CPIN-M60U-300 NB(*)-CPIN-M60E-300
1.5 NB(*)-CPSS-M15G-300 NB(*)-CPSS-M15U-300 NB(*)-CPSS-M15E-300
3.0 NB(*)-CPSS-M30G-300 NB(*)-CPSS-M30U-300 NB(*)-CPSS-M30E-300
4.5 NB(*)-CPSS-M45G-300 NB(*)-CPSS-M45U-300 NB(*)-CPSS-M45E-300
6.0 NB(*)-CPSS-M60G-300 NB(*)-CPSS-M60U-300 NB(*)-CPSS-M60E-300
1.5 NB(*)-NNIN-M15G-300 NB(*)-NNIN-M15U-300 NB(*)-NNIN-M15E-300
3.0 NB(*)-NNIN-M30G-300 NB(*)-NNIN-M30U-300 NB(*)-NNIN-M30E-300
4.5 NB(*)-NNIN-M45G-300 NB(*)-NNIN-M45U-300 NB(*)-NNIN-M45E-300
6.0 NB(*)-NNIN-M60G-300 NB(*)-NNIN-M60U-300 NB(*)-NNIN-M60E-300
A-135
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