다음 중 열처리로의 안전장치에 해당되지 않은 것은？① 시간제어

다음 중 열처리로의 안전장치에 해당되지 않은 것은？
① 시간제어 장치
② 상한 및 하한 온도계
③ 연소 감시 장치
④ 각종 압력 이상에 대비한 압력 스위치

Results (English) 1:

Which of the following heat treatment did not correspond to the safety device of the?① time control device② the upper and lower thermometer③ combustion monitoring devices④ various pressure for pressure switch

Results (English) 2:

It does not apply to the safety of heat treatment of the following?
① time control
② upper and lower bounds thermometer
③ combustion monitoring system
④ at least one pressure switch against various pressure

Results (English) 3:

the safety device of the heat treatment furnace is not equivalent to it.① time control devicethe upper limit and the lower limit ②③ combustion monitoring device④. in case of pressure pressure switch