NBN / NBG / NBB / NBS / NEP-T / NXT / HEP-TX

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.) Prices Shown in U.S. Dollars

Material	Type	Model No.	Price Ea.
Material	Type	Model No.	Price Ea.
Nylon	NBN	NBN-0 NBN-2 NBN-4	$19 $22 $24
Bakelite Glass Fiber	NBG	NBG-0 NBG-2 NBG-4	$19 $22 $24
Die Cast Aluminum	NBB	NBB-0 NBB-2 NBB-4	$23 $26 $29
NBS Cast Aluminum	NBS	NBS-0 NBS-2 NBS-4	$25 $29 $31
Cast Iron with Aluminum Cap	NEP-T	NEP-T0 NEP-T2 NEP-T4	$75 $77 $79
Aluminum	NXT	NXT-0 NXT-2 NXT-4	$27 $30 $32
Feraloy Iron Alloy	HEP-TX	HEP-TX-0 HEP-TX-2 HEP-TX-4 HEP-TX-70	$40 $43 $45 $45

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.

CONTINUED

Model #	Terminals	Wt. (oz)	Threaded Openings		Features
Model #	Terminals	Wt. (oz)	Protection Tube Entry	Extension Wire Entry	Features
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	15 18 20	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)
HEP-TX-0 HEP-TX-2 HEP-TX-4 HEP-TX-70	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	Price 12" Length	Price Add'l 6" or Fraction
14	XC-14-K-12	$17	$3
20	XC-20-K-12	$16	$2
24	XC-24-K-12	$16	$2
AWG Wire Size	Type E Temp. Range -300 to 2300°F	Price 12" Length	Price Add'l 6" or Fraction
14	XC-14-E-12	$17	$3
20	XC-20-E-12	$16	$2
24	XC-24-E-12	$16	$2
AWG Wire Size	Type J Temp. Range -300 to 2300°F	Price 12" Length	Price Add'l 6" or Fraction
14	XC-14-J-12	$17	$3
20	XC-20-J-12	$16	$2
24	XC-24-J-12	$16	$2