Level Controllers

Level controllers are automated units for measuring the level of fluid in a contained area. They're used in systems that prevent liquid levels becoming excessively high or low.  


How do level controllers work?

Firstly, a sensor detects the fluid level in either a container or a natural setting, such as a lake. It then sends a signal – normally either pneumatic or electrical – to a control valve, solenoid, or other external control device. If the fluid level needs to be adjusted, the control valve will open or close according to the information it has received.


Types of level controllers

The two main types of level controllers are pneumatic and electric. Your choice of controller will depend on factors such as the type and density of fluid being measured, as well as the pressure of the container.

  • Pneumatic level controllers are preferred when the material is hazardous, or electricity is unavailable. 
  • Electric level controllers are useful in pressurised tanks and are generally very accurate and reliable. 

Level controllers measure either exact volumes or when fluid drops above or below a fixed point.



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Description Price Number of Inputs Mounting Style Probe Voltage Supply Voltage Overall Length Overall Width Overall Depth Response Time Minimum Operating Temperature Maximum Operating Temperature Current Rating Hazardous Area Certification IP Rating Input Type
RS Stock No. 124-0115
Mfr. Part No.LI99-1001
BrandFlowline
kr 485,57
Each
Units
- Plug-In - - - - - - - - - - - -
RS Stock No. 889-1545
Mfr. Part No.LI55-1211
BrandFlowline
kr 7 473,12
Each
Units
1 DIN Rail Mount, Panel Mount - 85 → 265 V ac 119mm 62mm 136mm - -40°C +65°C 3 A - IP65 Sensor
RS Stock No. 124-0114
Mfr. Part No.LI40-1001
BrandFlowline
kr 2 039,70
Each
Units
1 Panel Mount - - 85.5mm 78.6mm 17mm - -20°C +60°C - - IP65 Sensor
RS Stock No. 889-1576
Mfr. Part No.LI90-1001
BrandFlowline
kr 10 935,08
Each
Units
4 DIN Rail Mount, Panel Mount - 10 → 30 V dc 96mm 96mm - - 0°C +50°C 3 A - IP65 Sensor
RS Stock No. 889-1548
Mfr. Part No.LI55-1401
BrandFlowline
kr 7 308,35
Each
Units
1 DIN Rail Mount, Panel Mount - 85 → 265 V ac 119mm 62mm 136mm - -40°C +65°C 3 A - IP65 Sensor
RS Stock No. 889-1536
Mfr. Part No.LI55-1201
BrandFlowline
kr 6 264,15
Each
Units
1 DIN Rail Mount, Panel Mount - 85 → 265 V ac 119mm 62mm 136mm - -40°C +65°C 3 A - IP65 Sensor
RS Stock No. 889-1532
Mfr. Part No.LI55-1011
BrandFlowline
kr 6 714,02
Each
Units
- - - 85 → 265 V ac - - - - -40°C +60°C 3 A - - -