ifm electronic - Level sensors
- High reliability due to the elimination of mechanical components.
- Easy ”teach in” via pushbutton.
- Analogue and switching outputs.
- The integrated LED display provides direct read-out of the current level.
- Suitable for measurements in aggressive media.
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Advantages of electronic sensors
Level measurement distinguishes between direct measurement in the medium and the indirect detection from the outside (for example through the tank wall by means of capacitive sensors). Deposits and wear and tear often lead to failures in particular if mechanical switches are in contact with the medium. The electronic ifm sensors however can do without any mechanical component. This makes the sensors especially robust and reliable. The suitable electronic sensors work without any problem even in aggressive media, such as lubricants and coolants. Another advantage of electronic sensors is the local indication of the level or the easy setting of the switching threshold simply by pressing a button as offered for some types. There are two basic types of level detection in tanks: continuous measurement and the detection of defined limits.
Continuous level measurement
For continuous level measurement the level is detected continuously, converted into an electrical signal and indicated. The units have freely programmable switching outputs or an analogue output for further processing. Continuous level sensors from ifm electronic use two physical measuring principles. For the capacitive measurement the tank and the material form an electrical capacitor. The capacity changes analogously to the level and is converted into a measure for the level by means of a microprocessor. For hydrostatic level measurement a ceramic measuring cell detects the hydrostatic pressure of the material. Here the pressure change is a measure for the level.
Point level measurement
For limit detection a defined level reached is detected and converted into an electrical switching signal. Thanks to the microprocessor technology the user can adjust the sensors to the medium by pressing buttons. The integrated electronics ensure an exact repeatability of the set switch points.
ifm electronic
ifm electronic gmbh is one of the leading manufacturers of automation technology world-wide. More than 3,000 employees in more than 70 countries develop solutions for 80,000 customers in the manufacturing industries. By optimising technical processes in the automotive, chemical and cosmetics industries or in environmental technology and automation of buildings ifm electronic has consistently set new standards and thus ensures tomorrow's production processes.
The family-run company with headquarters in Essen started with the invention of inductive proximity sensors in 1969. The German production in Tettnang on Lake Constance has ensured brand quality right from the start. Today "efector" stands for position and fluid sensors, object recognition, diagnostic and identification systems. The brand "ecomat" is synonymous with networking and control systems. In 2007 ifm made a turnover of more than € 410 million with above-average product quality, exceptional innovations and consistent close contact to the customer.
