1. Homepage
  2. Level sensors overview

Level sensors

Level measurement and its evaluation play an important role in process automation. What if a tank of liquid overflows or runs dry?

Level applications can be solved by a variety of technologies. Find the one that is best for your application.

The optimum solution for every requirement.
  Technology Applications Sensor type Max. measuring range [cm] Analogue output Switching output Approvals More information
Impedance spectroscopy
in contact with the medium
Alternative
to vibrating forks
Suppression of residues
and foam
LMT, LMC - - + EHEDG, 3A, FDA,
EC1935, WHG*, ATEX, DNV/GL, FCM
Point level applications
 
Capacitive
in contact with the medium
For overflow prevention
and leakage monitoring
LI - - + WHG*
Capacitive
without contact
For the detection
through non-metallic
tank walls
KG, KI, KQ 25 - +  
Capacitive
in contact with the medium
For applications
on hydraulic and
coolant tanks
LK, LT 73 + + WHG* Continuous level applications
Guided wave radar
in contact with the medium
For industrial and
hygienic applications
LR 200 + + EHEDG, 3A, FDA, EC1935, WHG*
Hydrostatic
in contact with the medium
For industrial and
hygienic applications on
tanks and in free-flowing
waterways
PG, PI,
PA, PS, PN,
PE, PM
- + + EHEDG, 3A, FDA, EC1935, ATEX, DNV/GL, FCM
Ultrasonic
without contact
For long distances and
difficult surfaces
UGT, UIT 800 + +  
Photoelectric
without contact
For long distances
Angle independent
measurement with
focused light spot
O1D 980 + +  
Photoelectric 3D
without contact
For bulk materials
For completeness
monitoring
O3D 800 + +  
*German Federal Water Act