The ULM-139 is an ultrasonic level meter for liquids and solids, especially suited to the economical replacement of mechanical level switches and float switches.
Its measuring range runs from 500 mm to 4,000 mm with an internal resolution below 1 mm, ambient temperature compensation, automatic rejection of secondary echoes and a display showing the current level.
It provides three relay outputs that the user can freely configure to act on the measured level, switching above or below the programmed level with a preset hysteresis.
The sensor runs on a nominal supply of 220 VAC, 50/60 Hz.
