卡式电热管基本构造

内置热电偶说明

注：如需其他类型热电偶，可联系我们。

常见的出线方式

其他参考资料

Centerless Grinding

Centerless grinding can be used to finish precision diameters, therefore, permitting closer heater-to-part fit and higher watt densities.  CT HEATERS’s rule of thumb is if length of heater is ≦ 100 mm, then the tolerance will be +0, -0.03 ~ -0.04 mm, if the length of heater is ＞ 100 mm, then the tolerance will be +0, -0.05 ~ -0.10 mm.

Distributed Wattage available

Distributed wattage varies the watt density along the length of the heater.  This construction technique is used to compensate for heat losses along the edges of heated parts.  To order, please specify distributed wattage and give the length and wattage for each section.

How to order

To order your Cartridge Heater, please specify:

l Volts, Watts, ODΦ of your actual insertion holes (tolerance of insertion holes:  if the overall length of element is ≦100, then the ODΦ of element will be +0, -0.03~0.04mm. if the overall length of element is >100, then the ODΦ of element will be +0, -0.05~0.1mm

l Overall length of element (excluded the lead wires), length of heated zone

l Lead wire length (Standard lengths 300 mm will be supplied if not otherwise specified.) and lead orientation

l Internal thermocouple available upon request

APPLICATIONS

图片说明：90°出导线，外编织保护，heater材质304

PRECAUTIONS

l Cartridge heaters are hygroscopic in nature due to Mgo contents.  If kept unused for longer period, there is moisture deposition on the terminals.  Therefore CT HEATERS recommend you to de-moisture the heaters prior to installation by heating them at 90~120℃ in an oven for at least 2 hours or use controllers with soft start function.  This will help evaporate any moisture present inside.

l When you are using cartridge heating elements, please have at least one or more thermocouple ready and please connect them correctly.  Each cartridge heater should have thermocouple contact with heater, and do not let temperature of heater surface exceed 650℃.

l Adapter area (cold zone) should be kept under 260℃

l Stabilized voltage supply increases the life of the heater as well as increases the wattage output. Grounding connection is must at all the time (green color coded wire).

l Unheated zone once bent should not be re-bent or de-coiled.  This will lead to breakage.  Sharp edges along the lead wire path areas should be protected from combustible gases & liquid to avoid short-circuits.