Water Level Instrument Using Impulse Transmitter 1910

  • With the advent of the public telephone system many ingenious ideas were developed for sending water-level information from one place to another.
  • The superintendent of a water-pumping station wanted to know the level of the source, perhaps a river or lake, and the level of the reservoir to which he was pumping.
  • A float on the water surface is connected to an impulse transmitter which sends an electrical impulse for a defined change in water level, up or down, to a remote indicator.