タイトル
http://www.meder.com/nbr-floats-en.html?&tx_jppageteaser_pi1[backId]=317
説明
Some important characteristic of liquid level sensors are it’s sensing points, stable buoyancy, specific gravity, and resistance to heat, oil, fuels and various other chemicals. These apply to both the magnetic float and stem. Many floats constructed of brass or various types of plastic have failed to fulfill the fundamental characteristics necessary in a liquid level sensor.