Cartridge heater often considered as component heater a cartridge is dependent on hole clearance. The larger has a heating coil wound on a ceramic core and are the hole clearance the lower the recommended wattcylindrical-shaped, heavy-duty Joule heating element. density. For temperature sensing, a thermocouple Electricity flows through coil when a two or three-phase should be positioned in the heater but its life is reducedvoltage is applied. The electricity heats the coil and, by slow "onoff" cycling of power controllers. So PID autosubsequently, the cartridge sheath. The watt density (in tuning controllers with solid state relay or thyristor output Wattinch2) depends on the number of spirals or turns are suggested. per inch. The sheath comes in contact with the surfacebeing heated. Insulation in the cartridge heater ensures that the heating wire never comes in contact with the sheath and protects the sheath from melting in case of any mishap. The leads that come out of the heater terminal have metal conduit, or silicon sleeves to protect from high temperature. Lead wires are often fiberglass or silicon rubber.
Abhishek (Tempsens Instruments (I) Pvt Ltd)
B-188 A, Road No.5 , MIA Udaipur, Transport Nagar, Rajasthan - 313003, India
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