Hampton Controls
Hampton Controls
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Conventional Cartridge Heaters
Our cartridge heaters exceed the performance and durability of other cartridge heaters. Through refinements in the swaging process, specially designed cores, careful selection of magnesium oxide fill, nickel chromium resistance wire, stainless steel tubing, and carefully controlled production processes, our cartridge heaters routinely outperform other cartridge heaters in difficult applications.

STANDARD FEATURES

1. High temperature lead wires for temperatures up to 450° C.

2. High impact ceramic cap retards contamination and is suitable for high vibration applications. Deep holes in cap prevent fraying of leads when bent.

3. Nickel-chromium resistance wire for maximum heater life, evenly wound for even heat distribution.

4.High purity magnesium oxide fill selected for maximum dielectric strength and thermal conductivity, highly compacted for maximum heat transfer.

5. 304 stainless steel sheath for oxidation resistance in a wide variety of environments. 316 stainless steel and Incoloy are also available. Please consult the application guide in the back for help in determining which material best for your application.

6. TIG welded end disc to prevent contamination and moisture absorption.

STANDARD SPECIFICATIONS
Nominal Diameter
Minimum Diameter
Maximum Diameter
Std. Lead Wire Gauge
Max amps with Std. Lead wire
Max lead wire gauge
Maximum amps
Maximum Volts
1/4"
.244
.249
24
6
22
9
300
6.5mm
.250
.255
24
6
22
9
300
5/16"
.306
.311
24
6
22
9
300
8mm
.309
.314
24
6
22
9
300
3/8"
.369
.374
22
9
18
15
300
10mm
.388
.393
22
9
18
15
300
12mm
.466
.471
22
9
18
15
300
12.5mm
.486
.491
22
9
18
15
480
1/2"
.494
.499
22
9
18
15
480
13mm
.506
.511
22
9
18
15
480
17/32"
.525
.530
22
9
18
15
480
5/8"
.619
.624
18
15
26
26
480
16mm
.624
.629
18
15
26
26
480
17mm
.663
.668
18
15
26
26
480
11/16"
.682
.687
18
15
26
26
480
19mm
.742
.747
18
15
26
26
480
3/4"
.744
.749
18
15
26
26
480
20mm
.782
.787
18
15
26
26
480
1"
.994
.999
18
15
26
26
480

Cartridge Heater Configurations
Lead Arrangements
Type SL
Swaged in Leads
Swaged in leads are ideal for applications where there is a lot of movement or the leads must be bent sharply upon exiting the heater. Please note that for heaters over 3" long there is a short unheated section where the leads connect to the power pins. Also remember that if the heater is inserted completely into the hole, the leads are exposed to the block temperature (maximum temperature for standard leads is 450°C, 850°F).

Type CL
Crimped on Leads
Crimped on leads are generally used where the temperature at the end of the heater exceeds the maximum rated temperature of the lead wire. Since the connection between the leads and power pins is made outside the heater, the unheated length at the lead end of the heater is kept to a minimum. Crimped on leads are not recommended for applications where the leads must be bent sharply near the heater, or in applications where the leads will be subject to a lot of flexing. The high temperature connectors are covered by 1-1/2" of 2500 volt silicone rubber coated fiberglass sleeving.

Type PT
Post Terminals
Post terminals (also called screw terminals or stud terminals) are used in applications where easy lead replacement is desirable. They work great with ring terminals or fork terminals. Post terminals are only available for heater 1/2" diameter and up. Terminals are #6-32 and supplied with 2 stainless steel washers and 2 stainless steel nuts on each stud.

Type RAL
Right Angle Leads
Right angle leads are ideal for applications where space is limited. Leads are covered with a silicon impregnated fiberglass sleeve where they exit the heater. When ordering, please specify the overall length.

Type TS
Teflon Steel
When an effective moisture or oil seal is needed, a swaged in teflon seal with teflon leads provides an effective barrier. Because it is necessary to keep the temperature of the teflon seal below 350°F, a 1" long unheated section is recommended. Standard lead gages apply.

Type SRS
Silicon Rubber Seal
A high temperature silicon rubber seal used with silicon rubber lead wires provides an effective seal up to 400°F (200°C). It is generally the most impervious of the moisture seals. In order to protect the seal, a 1" unheated section is recommended.

Type ES
Epoxy Seal
Epoxy potting forms a good moisture seal with more mechanical strength than a silicone rubber seal. Regular epoxy is rated at 350°F (177°C) and epoxylite is rated at 600°F (316°C). In order to protect the seal, a 1" unheated section is recommended.

Type SB
Swaged in Braid
Swaged in stainless steel braid provides excellent abrasion protection while allowing the leads to be bent in a tight radius. Because the braid is swaged in, it is extremely to pulling out of the heater.

Type RASSB
Right Angle Stainless Steel Braid
Right angle stainless steel braid offers the same advantages as swaged in stainless steel braid but allows use in tight spaces. When ordering, please specify the overall length.

Type SSFC
Stainless Steel Flexible Conduit
Flexible conduit provides maximum lead protection from abrasion but can not be sent as sharply as stainless steel braid. Flexible conduit is swaged into the heater for maximum protection. (Flexible conduit is also known as armor or hose)

Type CC/SSFC
Copper Coupler and Stainless Steel Flexible Conduit
Flexible conduit can also be attached to the sheath with a copper coupler. This method can also be used to attach flexible conduit to stock heaters.

Type RASSC
Right Angle Stainless Steel Conduit
Right angle stainless steel conduit offers the same advantages as swaged in stainless steel conduit but allows use in tight spaces. When ordering, please specify the overall length.

Type CE/SSFC
Copper Elbow and Stainless Steel Flexible Conduit
Right angle flexible conduit can also be attached to the sheath with a copper elbow. This method can also be used to attach right angle flexible conduit to stock heaters.

Type HHPF
Hex Head Pipe Fittings
Fittings are available in brass or stainless steel. Brass fittings are brazed on and stainless steel fittings can be either brazed or welded on. Please specify overall heater length and fitting material when ordering. Please consult the sheath suitability chart when ordering heaters for immersion applications.

Type DET-NTP-F
Double Ended Threaded NPT Fittings
Double ended fittings are normally used when it is desirable to mount a box on an immersion heater. Fittings are available in stainless steel and brass. Please specify overall heater length when ordering.

Type M
Flanges
Small flanges can be welded on the lead end of the heater. Flanges can be used to hold a heater in place to prevent backing out during operation. Flanges also assist in heater removal. Flanges are 1/16" thick.

Type LR
Locating Ring
Locating rings are used to position the heater and keep it from entering too far into the hole. Unless otherwise specified, the ring will be located 1/4" from the end of the heater.

Type T
Thermocouples
Type "J" and "K" thermocouples can be installed to monitor part temperatures. A thermocouple mounted against the heater sheath in the center of the heater gives a good approximation of block temperature, especially when there is a good fit between the heater and the block. A thermocouple mounted in the tip is useful for monitoring liquid temperatures, or material flowing past the end of the heater. Unless otherwise specified thermocouples leads will be the same length as the heater leads. Standard thermocouple wire insulation is teflon, other types are available on request. Please specify thermocouple type when ordering.

Type DW
Distributed Wattage
Distributed wattage cartridge heaters (with a higher watt density on the ends than the rest of the heater) can be used to compensate for end losses in blocks. Distributed wattage cartridge heaters are available in all diameters

Type BCH
Bent Cartridge Heater
Cartridge heaters can bend at any angle from 10° to 120°. Heaters must be bent in an unheated section, and can be constructed with most of the other options shown on this page.

Type SJOC
SJO Cord
2 conductor or 3 conductor SJO cord is available as a lead option for heaters 3/8" diameter and larger. On 3/8" and 1/2" dia heaters, the cord directly exits the heater. On 5/8" and larger diameters the cord is surrounded by epoxy where it exits the heater. Remember to allow 1" unheated at the end of the heater to keep from overheating the cord.

Type DEH
Double Ended Heater
Cartridge heaters are also available with an electrical termination on each end. Heaters can be made with lead wires, straight pins, or screw terminals.




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Hampton Controls, Inc.
Wendel Road • P.O. Box 187
Wendel, PA 15691
Phone: (724) 861-0150 • Fax: (724) 861-0160
sales@hamptoncontrols.com • www.hamptoncontrols.com

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