< Difference of TSK Honeycomb block heater and sheathed heater >

TSK Honeycomb block heater is incorporated the heater element to the honeycomb ceramic that there are very few pressure losses. And, this is the structure that the gas passes evenly to inside and the outside of the heater element.
To this, the sheathed heater is input the heating element to the metal sheath pipe and the insulator (Magnesia) is filled up.
　

	TSK Honeycomb block heater (PAT.) made in our company	Sheathed heater made in other company
Thermal efficiency	Heat of the heater element is converted to the  hot-air by 100% of efficiency because the  heated gas can pass the outside and inside of  the heater element that was wound up into the  coil form.	Thermal efficiency is bad for second heating  (Rise in temp. is slow). At the high temp., the  heat efficiency of passage gas falls off by the  transformation of the sheath pipe (Pitch  between the heater is fluctuated by hanging).
Life	The heater is not snapped regardless of temp.  and can be used semipermanent because the  watt density can be set low.	The heater is easy to be snapped the watt  density can be set high. And, this can be used  at the high temp. level.
Safety	This can be used semipermanent because the  insulation distance and space distance are  secured sufficiently.	Heating element and the metal sheath short-  circuit by the insulation of the magnesia  becomes bad.
Operation	Cooling operation is not necessary.	Cooling operation is necessary without fail  when the operation is stopped.