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. 348-7911
Mfr. Part No.MXL-10.924/RS
SGD180.10
Each
units
2 DIN Rail Mount 12V ac 24 V dc 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 135-6329
Mfr. Part No.1SVR740850R2100
BrandABB
SGD162.24
Each
units
1 DIN Rail Mount - 110 → 130 V ac, 220 → 240 V ac 113.4mm 22.5mm 113.4mm - -25°C +60°C 20 (110 → 130 V ac) mA, 8.5 (220 → 240 V ac) mA - IP20 (Terminal), IP50 (Housing) Voltage
RS Stock No. 889-1548
Mfr. Part No.LI55-1401
BrandFlowline
SGD1,217.08
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. 465-0621
Mfr. Part No.MK9151N.12 2-450kOHM AC230V 0-20s
BrandDold
SGD239.94
Each
units
1 DIN Rail Mount 10V ac 230 V ac 90mm 22.5mm 98mm - -20°C +60°C - - - -
New
RS Stock No. 206-7060
Mfr. Part No.CR - 222 22E
BrandVega
SGD1,051.52
Each
units
1 Wall Mount 27V 100 → 230 V 200mm - - - - - - - - Voltage
RS Stock No. 804-3945
Mfr. Part No.7ML5050-0AA11-1DA0
BrandSiemens
SGD1,972.92
Each
units
2 Panel Mount - 10 → 32 V dc, 100 → 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -