Hi-Density Miniature Cartridge Heaters

Standard Termination for Hi-Density Miniature Cartridge Heaters. A moisture resistant Teflon® seal that is swaged in during the manufacturing process with Teflon® insulated lead wire.

Flexible stranded lead wires have fiberglass insulation and are connected to 1-1/4″ (32 mm) long solid conductors. Silicone rubber coated fiberglass sleeving insulates the pin/lead wire connection.

The fiberglass lead wires are internally connected to the terminal pins. This lead termination provides flexibility, permitting the lead wires to be sharply bent as they exit the heater.

Stainless steel braid over fiberglass leads offers sharp bending not possible with armor cable, as well as abrasion protection.

Armor cable provides the maximum in protection for abrasive, jagged environments. The coupling between the cartridge and the armor cable is mechanically fastened.

If your filter selections do not return your desired results from our standard configurations, please continue to Refine Results for your specifications. When you are finished, save your selections with the Save Results for Quote button (at the right of this page) and choose Request for Quote for further assistance.

The thermocouple junction is grounded to the sheath at the disc end and packed with MgO. The concave end disc is filled with silver solder and ground flat. When inserted into a flat end blind hole, it will provide fast responsive temperature readings. Widely used in Hot Runner mold probes.

The thermocouple junction is ungrounded, located at the end of the heater section, 1/8″ behind the end disc and packed with MgO. Only provides reference temperature reading of the part being heated – slower response.

The thermocouple junction is ungrounded and is located in the center of the length and diameter of the cartridge heater. It provides internal temperature readings of the heater core. Generally used for research applications and is not recommended for controlling process temperatures.

The thermocouple junction is grounded to the sheath in a 1/2″ unheated section located in the center of the cartridge length unless otherwise specified. It provides good temperature readings with quick response.

The thermocouple junction is grounded to the sheath at the lead end. A minimum of 3/8″ of cold section is required. It provides good temperature readings with quick response.

Tempco has the ability to custom design cartridge heaters with built-in temperature sensors such as thermistors and RTDs. For specific applications that have a limited or single set point range, thermistors or RTDs in conjunction with simple electronic controllers can be an economical choice. NOTE: For thermocouples see page 2-58.

Tempco has the ability to custom design cartridge heaters with built-in temperature sensors such as thermistors and RTDs. For specific applications that have a limited or single set point range, thermistors or RTDs in conjunction with simple electronic controllers can be an economical choice. NOTE: For thermocouples see page 2-58.

Standard Electrical Tests and Optional Test Reports 1. Resistance test — measures ohms at room temperature. 2. IR (insulation resistance) test — measures the insulation resistance to the flow of current. Standard test is done at 500VDC. 3. Hipot (high potential) test — a high voltage is applied between a product’s current carrying conductors and its metallic enclosure to verify that the insulation is sufficient to protect the operator from electrical shock. 4. Leakage current test — measures the current that flows from any conductive part to ground. 5. Heaters can be serialized and test reports can be sent with each shipment if required. Contact Tempco with your requirements.

This non-destructive testing can detect imperfections in weld joints. For critical applications, each individual heater’s weld joints by end cap and fittings can be tested. Certified test reports will be sent with each shipment. Consult Tempco for details.

Cartridge heaters with attached pipe fittings can be pressure tested to your specifications at Tempco. Our in-house testing capabilities can ensure that your products meet your exact specifications. Contact Tempco with your requirements.