detector

検知器、探知機

煙や金属などの存在を見つけ、警報を出すこともある装置。

やさしい英語で： A device that finds or notices something, such as smoke or metal, and may give a warning.

• The smoke detector started beeping.
• He found a coin with his metal detector.
• Have you checked the batteries in the detector?

類義語： sensor

よく使う表現： smoke detector, metal detector, gas detector

放射線検出器

放射線や、光・電波などの波を測る装置。

やさしい英語で： A device that measures radiation or waves such as light and radio signals.

• The detector measured the radiation.
• An infrared detector picked up the signal.
• Scientists placed several detectors around the experiment.

類義語： sensor

よく使う表現： radiation detector, infrared detector, particle detector

水位計

ボイラー内の水の量を示す装置。

やさしい英語で： A device that shows how much water is in a boiler.

• The detector showed a low water level.
• The engineer checked the boiler detector.
• This detector indicates the depth of water in the boiler.

類義語： water-level gauge

よく使う表現： boiler detector, water level detector, a detector

検流計

電流がどちら向きに流れているかを示す小型の測定器。

やさしい英語で： A small electrical measuring device that shows which way a current is flowing.

• The detector showed the current direction.
• He connected a portable detector to the circuit.
• The detector needle moved when we reversed the current.

類義語： galvanometer

よく使う表現： portable detector, galvanometer detector, a detector