Level sensors are used to detect liquid or powder levels, or interfaces between liquids. There are two basic level-measurement types: continuous and point or multi-point

Ultrasonic transducers send and receive waves for many types of sensing. Examples include distance, proximity, level, nondestructive evaluation, web break detection, counting, and security applications

Ultrasonic instruments use beams of high frequency, short wave signals to inspect, monitor, and measure materials and components

Liquid level switches are used to detect specific liquid levels or interfaces between liquids. These level measurements are indicated via an electrical switching action

Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids. 

Ultrasonic cleaners use high frequency sound waves to create bubbles for loosening and removing dirt, scale, and other impurities from parts. 

Level gauges are industrial meters used to determined the level of a liquid in a fixed storage or process tank

Level switches, all types, is a generic search form for devices that are used to detect liquid or powder levels, or interfaces between liquids. These level measurements are indicated via an electrical switching action

Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement

Level transmitters or level transducers are used to measure the level of a liquid or bulk solid material (as well as slurries) within a specified space. For each measurement, they provide an electrical output that is proportional to the input level

Levels are mechanical or electronic tools that measure the inclination of a surface relative to the earth's surface

Ultrasonic proximity sensors use reflected or transmitted ultrasonic waves to detect the presence or absence of a target component

Dry material (powders) level sensing devices are used to measure levels of solid, dry materials in either continuous or point values represented with various output options

Dry material (powders) level switches are used to measure levels of dry, solid materials via an electrical switching action

Ultrasonic flow meters use sound frequencies to determine flow rates. They do not work well with liquids with suspended solids or air gaps