PTC self-
controlled heater |
PTC heater, the temperature can be controlled itself |
Long life, temperature controller and protector are needless |
Temperature rising is slower, temperature can not be adjusted |
Used in small ones |
PTC heater, with a controlled circuit |
PTC with higher temperature, but control the temperature lower by a circuit |
Long life,
temperature protecting can be neglected |
Temperature control is needed, temperature rising is slower |
Used in small ones or big ones |
Ceramic heating plate |
Coating a heating layer and an insulating layer on ceramic plate |
Temperature rising is faster, simple to be assembled |
Temperature control and protect are needed, higher cost |
Used in big ones |