Dry Material (Powders) Level Sensors Information
Image Credit: Carlton-Bates Company | First Sensor AG | CARLO GAVAZZI Automtation Components
Dry material level sensors are used to measure levels of solid, dry materials (powders). These level measurements can be either continuous or point values represented with various output options. Continuous level sensors are devices that measure level within a specified range and give output of a continuous reading of level. Point level sensors devices mark a specific level, generally used as high alarm or switch. Multiple point sensors can be integrated together to give a stepped version of continuous level.
Considerations for Dry Materials Level Sensors
The measuring range is probably the most important specification to examine when choosing dry material level sensors and powder level sensors. Field adjustability is a nice feature to have for tuning the instrument after installation.
Dry material level sensors and powder level sensors can be either plain sensors with some sort of electrical output or else can be more sophisticated instruments that have displays and sometimes computer output options.
Depending on the needs of the application, level sensors can be mounted a few different ways. These devices can be mounted on the top, bottom or side of the container holding the substance to be measured.
Among the technologies for measuring level are air bubbler technology, capacitive or RF admittance, differential pressure, electrical conductivity or resistivity, mechanical or magnetic floats, optical units, pressure membrane, radar or microwave, radio frequency, rotation paddle, ultrasonic or sonic and vibration or tuning fork technology.
Analog outputs from dry material level sensing devices and powder level sensing devices can be current or voltage signals. Also possible is a pulse or frequency. Another option is to have an alarm output or a change in state of switches. Computer signal outputs that are possible are usually serial or parallel.
Dry material level sensors and powder level sensors can have displays that are analog, digital or video displays.
Control for the devices can be analog with switches, dials and potentiometers; digital with menus, keypads and buttons; or controlled by a computer.
Some features that can make dry material level sensing devices and powder level sensing devices more desirable are being programmable, having controller, recorder or totalizer functions and a built-in alarm indicator, whether audible or visible. Also important for some applications are sanitary ratings and the ability to handle slurries with suspended solids, such as wastewater or sewage.
Related Products & Services
Dry Material (Powders) Level Switches
Dry material (powders) level switches are used to measure levels of dry, solid materials via an electrical switching action.
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.
Level switches is a generic search term 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.
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.
Liquid Level Sensors
Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids.
Liquid Level Switches
Liquid level switches are used to detect specific liquid levels or interfaces between liquids. These level measurements are indicated via an electrical switching action.