Madison manufactures a variety of liquid level sensors and switches: single point liquid level float, optical level and single point conductivity sensors, multi-point level and multi-point conductivity sensors, radar level and ultrasonic, pressure and continuous read sensors. The MAD4500 and MAD4510 represent Madison's submersible pressure sensors line. The MAD4520, a hydrostatic submersible pressure sensor. is ideal for vessel applications involving viscous material and turbulent conditions.

Automation Products Group manufactures liquid level sensors including switches for single point and multiple point applications, as well as continuous level sensors for continuous reading of liquid levels through an analog output. Continuous level sensor models include self-contained ultrasonic sensors, remote controlled ultrasonic sensors and submersible liquid level transmitters.

RS Hydro is a manufacturer of level sensors and transmitter for various pressure, ultrasonic, open channel, radar and capacitance level measuring applications. Hydrostatic pressure level sensors from RS Hydro are submersible sensors used for measuring the level of liquids (including corrosive liquids) in deep tanks or water in reservoirs. RS Hydro's capacitance level sensors are rugged and contain no moving parts making them easy and simple to use and maintain.

Migatron Corp manufactures ultrasonic sensor products including self-contained sensors, intrinsically safe and explosion proof sensors, high accuracy sensors, remote sensing equipment and close range sensors for detecting measurements withing .5 to 30 inches. A wide range of self contained sensors feature sensors and controllers built into the same unit with sensing ranges up to 80".

Ametek Drexelbrook is a manufacturer of a wide range of level measurement equipment including point level sensors and various continuous level measurement senors. Ametek Drexelbrook's continuous level measurement products come in a variety of configurations with models including smart check well, drop-in-displacer, desalter and RCT RF.

MaxBotix is a manufacturer of a variety of sensor products including the LV-MaxSonar -EX system,  with high power output, noise rejection, auto calibration and long-range narrow detection zone.

Uehling Instrument Co is a manufacturer of liquid level gauges, pressure sensors and liquid presence sensing equipment. Uehling's liquid level gauge products include bubblers, submersible or direct mounted and ultrasonic level sensors and float, pressure and ultrasonic switches.

Innovative Components manufactures a variety of liquid level indicators for industrial applications. Various types of liquid level indicators are offered including electrical float type, mechanical float type, pressure transmitters and ultrasonic transmitters. These sensors give point to point or continuous readings and are ideal when full to empty readings of tanks, drums, or large containers.