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. 510-9297
Mfr. Part No.61F-GPN-BC 24VDC
BrandOmron
MYR673.03
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 240-9005
Mfr. Part No.MK9151.11 2-450kOhm DC24V
BrandDold
MYR670.70
Each
units
1 DIN Rail Mount 10V ac 24 V dc 82mm 22.5mm 99mm - -20°C +60°C - - - -
RS Stock No. 111-3527
Mfr. Part No.K7L-AT50B
BrandOmron
MYR1,156.84
Each
units
1 DIN Rail Mount - 12 → 24 V dc 12.8mm 46mm 28.8mm - -10°C +55°C - - - -
RS Stock No. 510-9304
Mfr. Part No.61F-GPN-BT 24VDC
BrandOmron
MYR673.03
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 303-0414
Mfr. Part No.61FGPN8230AC
BrandOmron
MYR430.57
Each
units
1 DIN Rail Mount 8V ac 230 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 889-1576
Mfr. Part No.LI90-1001
BrandFlowline
MYR5,554.63
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. 331-7547
Mfr. Part No.S1384
BrandAssemtech
MYR180.23
Each
units
1 - - 12 V dc 64mm 58mm 35mm - -10°C +50°C - - - -
RS Stock No. 303-0391
Mfr. Part No.61FGPN8110AC
BrandOmron
MYR312.06
Each
units
1 DIN Rail Mount 8V ac 110 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 124-0115
Mfr. Part No.LI99-1001
BrandFlowline
MYR263.48
Each
units
- Plug-In - - - - - - - - - - - -
RS Stock No. 818-4272
Mfr. Part No.61FGPN2230AC
BrandOmron
MYR448.57
Each
units
1 DIN Rail Mount 8V ac 230 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -
RS Stock No. 361-1603
Mfr. Part No.B8LCR 230VAC
MYR339.38
Each
units
1 - 17V ac 230 V ac 92mm 40mm 80mm - -20°C +60°C - - - -
RS Stock No. 780-0298
Mfr. Part No.SM20
BrandCynergy3
MYR420.56
Each
units
1, 2, 3 DIN Rail Mount - 240 V ac, 415 V ac - - - - 0°C +50°C - - - -
RS Stock No. 858-2686
Mfr. Part No.CLP2EA1C230
MYR1,333.73
Each
units
- - - - - - - - -20°C +50°C - - - -
RS Stock No. 621-1571
MYR393.21
Each
units
2 Panel Mount 17V ac 115 V ac, 230 V ac 75mm 48mm 48mm - -20°C +60°C - - - -
RS Stock No. 892-9340
Mfr. Part No.3493L1P7I1
BrandRosemount
MYR9,735.64
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. 892-9766
Mfr. Part No.3491L1P6I1
BrandRosemount
MYR3,559.91
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. 889-1545
Mfr. Part No.LI55-1211
BrandFlowline
MYR4,117.94
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
MYR1,106.14
Each
units
1 Panel Mount - - 85.5mm 78.6mm 17mm - -20°C +60°C - - IP65 Sensor
RS Stock No. 804-3945
Mfr. Part No.7ML5050-0AA11-1DA0
BrandSiemens
MYR6,109.99
Each
units
2 Panel Mount - 10 → 32 V dc, 100 → 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -
RS Stock No. 135-6327
Mfr. Part No.1SVR730850R0200
BrandABB
MYR580.78
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