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. 135-6325
Mfr. Part No.1SVR730850R0100
BrandABB
SGD154.99
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. 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 - - - -
RS Stock No. 135-6333
Mfr. Part No.1SVR740850R0200
BrandABB
SGD171.71
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. 889-1536
Mfr. Part No.LI55-1201
BrandFlowline
SGD1,038.32
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. 135-6331
Mfr. Part No.1SVR740850R0100
BrandABB
SGD165.85
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. 889-1576
Mfr. Part No.LI90-1001
BrandFlowline
SGD1,693.70
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. 201-0776
Mfr. Part No.CLD2EB1BU24
SGD134.93
Each
units
2 DIN-rail 5V 24 V 100000mm - - - - - - - - Analog
RS Stock No. 746-7447
Mfr. Part No.1SVR550851R9500
BrandABB
SGD111.98
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 → 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 884-2451
Mfr. Part No.4411AD1
BrandGIC
SGD56.14
Each
units
- - - 110 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 348-7911
Mfr. Part No.MXL-10.924/RS
SGD177.45
Each
units
2 DIN Rail Mount 12V ac 24 V dc 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 144-0874
Mfr. Part No.K7L-AT50DPB
BrandOmron
SGD562.00
Each
units
1 Plug-In 24V dc 12 → 24 V dc 12.8mm 28.8mm 46mm - -10°C +55°C - - - Voltage
New
RS Stock No. 206-7058
Mfr. Part No.CR - 222 223
BrandVega
SGD750.51
Each
units
1 Wall Mount 27V 100 → 230 V 162mm - - - - - - - - Voltage
RS Stock No. 746-7435
Mfr. Part No.1SVR550855R9500
BrandABB
SGD111.98
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 24 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 884-2464
Mfr. Part No.4431AD1
BrandGIC
SGD78.63
Each
units
- - - 400 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 144-0875
Mfr. Part No.K7L-UDPB
BrandOmron
SGD679.40
Each
units
1 Plug-In 24V dc 12 → 24 V dc 12.8mm 28.8mm 46mm - -10°C +55°C - - - Voltage
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. 124-0114
Mfr. Part No.LI40-1001
BrandFlowline
SGD337.28
Each
units
1 Panel Mount - - 85.5mm 78.6mm 17mm - -20°C +60°C - - IP65 Sensor
RS Stock No. 144-9335
Mfr. Part No.84800056
BrandXylem
SGD1,450.45
Each
units
10 Panel Mounted 10V ac 24 V dc 96mm 96mm 130mm - -10°C +60°C 800 μA - - -
RS Stock No. 889-1532
Mfr. Part No.LI55-1011
BrandFlowline
SGD1,033.91
Each
units
- - - 85 → 265 V ac - - - - -40°C +60°C 3 A - - -
RS Stock No. 135-6323
Mfr. Part No.1SVR730850R2100
BrandABB
SGD154.99
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
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