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. 446-2632
Mfr. Part No.MCU901WX-A
BrandMobrey
TWD32,786.00
Each
units
2 Wall Mount 230/115Vac selectable 15 30 V dc, 98 132 V ac, 198 254 V ac 185mm 213mm 84mm - -40°C +55°C - - - -
RS Stock No. 111-3527
Mfr. Part No.K7L-AT50B
BrandOmron
TWD7,814.00
Each
units
1 DIN Rail Mount - 12 24 V dc 12.8mm 46mm 28.8mm - -10°C +55°C - - - -
RS Stock No. 124-0115
Mfr. Part No.LI99-1001
BrandFlowline
TWD1,776.00
Each
units
- Plug-In - - - - - - - - - - - -
RS Stock No. 510-9297
Mfr. Part No.61F-GPN-BC 24VDC
BrandOmron
TWD4,537.00
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 331-7547
Mfr. Part No.S1384
BrandAssemtech
TWD1,215.00
Each
units
1 - - 12 V dc 64mm 58mm 35mm - -10°C +50°C - - - -
RS Stock No. 889-1532
Mfr. Part No.LI55-1011
BrandFlowline
TWD22,858.00
Each
units
- - - 85 265 V ac - - - - -40°C +60°C 3 A - - -
RS Stock No. 804-3945
Mfr. Part No.7ML5050-0AA11-1DA0
BrandSiemens
TWD41,190.00
Each
units
2 Panel Mount - 10 32 V dc, 100 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -
RS Stock No. 124-0114
Mfr. Part No.LI40-1001
BrandFlowline
TWD7,457.00
Each
units
1 Panel Mount - - 85.5mm 78.6mm 17mm - -20°C +60°C - - IP65 Sensor
RS Stock No. 465-0766
Mfr. Part No.MK9151N.12 2-450kOHM DC24V 0.2-20s
BrandDold
TWD5,048.00
Each
units
1 DIN Rail Mount 10V ac 24 V dc 90mm 22.5mm 98mm - -20°C +60°C - - - -
RS Stock No. 135-6333
Mfr. Part No.1SVR740850R0200
BrandABB
TWD4,188.00
Each
units
1 DIN Rail Mount - 24 240 V ac/dc 113.4mm 22.5mm 113.4mm - -25°C +60°C 11 mA - IP20 (Terminal), IP50 (Housing) Voltage
RS Stock No. 240-9011
Mfr. Part No.MK9151.11 2-450kOhm AC220-240V
BrandDold
TWD4,521.00
Each
units
1 DIN Rail Mount 10V ac 220 → 240 V ac 82mm 22.5mm 99mm - -20°C +60°C - - - -
RS Stock No. 892-9766
Mfr. Part No.3491L1P6I1
BrandRosemount
TWD23,749.00
Each
units
1 Wall Mount 230/115Vac selectable 115 V ac, 230 V ac 213mm 185mm 84mm - -40°C +55°C 4 → 20 mA, 200 (Fuse) mA ATEX IP65 Current, Voltage
RS Stock No. 135-6323
Mfr. Part No.1SVR730850R2100
BrandABB
TWD3,780.00
Each
units
1 DIN Rail Mount - 110 130 V ac, 220 240 V ac 113.4mm 22.5mm 113.4mm - -25°C +60°C 8.5 (220 240 V ac) mA, 20 (110 130 V ac) mA - IP20 (Terminal), IP50 (Housing) Voltage
RS Stock No. 135-6329
Mfr. Part No.1SVR740850R2100
BrandABB
TWD4,045.00
Each
units
1 DIN Rail Mount - 110 130 V ac, 220 240 V ac 113.4mm 22.5mm 113.4mm - -25°C +60°C 8.5 (220 240 V ac) mA, 20 (110 130 V ac) mA - IP20 (Terminal), IP50 (Housing) Voltage
RS Stock No. 884-2455
Mfr. Part No.4421AD1
BrandGIC
TWD1,326.00
Each
units
- - - 240 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 892-9340
Mfr. Part No.3493L1P7I1
BrandRosemount
TWD65,631.00
Each
units
1 Panel Mount 230/115Vac selectable 115 V ac, 230 V ac 144.8mm 74.7mm 173mm - -40°C +55°C 4 → 20 mA, 200 (Fuse) mA - IP40 Current, Voltage
RS Stock No. 135-6325
Mfr. Part No.1SVR730850R0100
BrandABB
TWD3,780.00
Each
units
1 DIN Rail Mount - 24 240 V ac/dc 113.4mm 22.5mm 113.4mm - -25°C +60°C 11 mA - IP20 (Terminal), IP50 (Housing) Voltage
RS Stock No. 889-1545
Mfr. Part No.LI55-1211
BrandFlowline
TWD27,472.00
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. 361-1596
Mfr. Part No.45225 230VAC
TWD2,665.00
Each
units
1 DIN Rail Mount 17V ac 230 V ac 78mm 45mm 99mm - -20°C +60°C - - - -
RS Stock No. 144-0875
Mfr. Part No.K7L-UDPB
BrandOmron
TWD16,581.00
Each
units
1 Plug-In 24V dc 12 24 V dc 12.8mm 28.8mm 46mm - -10°C +55°C - - - Voltage