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. 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 - - - -
RS Stock No. 746-7431
Mfr. Part No.1SVR550851R9400
BrandABB
SGD112.59
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 → 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
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
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 - 76mm - -40°C - 5 W - IP65 Voltage
RS Stock No. 446-2632
Mfr. Part No.MCU901WX-A
SGD1,344.16
Each
units
2 Wall Mount 230/115Vac selectable 15 → 30 V dc, 198 → 254 V ac, 98 → 132 V ac 185mm 213mm 84mm - -40°C +55°C - - - -
RS Stock No. 386-8556
Mfr. Part No.202995/00-91/000
BrandJumo
SGD377.81
Each
units
3 - - - 66mm - - - -10°C +60°C - - - -
RS Stock No. 135-6324
Mfr. Part No.1SVR730850R2200
BrandABB
SGD160.52
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
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 - 76mm - -40°C - 5 W - IP65 Voltage
New
RS Stock No. 206-7059
Mfr. Part No.CR - 222 22G
BrandVega
SGD1,035.25
Each
units
2 Wall Mount 27V 100 → 230 V 162mm - 76mm - -40°C - 5 W - IP65 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. 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
RS Stock No. 135-6327
Mfr. Part No.1SVR730850R0200
BrandABB
SGD160.52
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. 135-6328
Mfr. Part No.1SVR730850R0300
BrandABB
SGD225.47
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. 135-6330
Mfr. Part No.1SVR740850R2200
BrandABB
SGD171.71
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. 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
RS Stock No. 361-1596
Mfr. Part No.45225 230VAC
SGD100.28
Each
units
1 DIN Rail Mount 17V ac 230 V ac 78mm 45mm 99mm - -20°C +60°C - - - -
RS Stock No. 892-9760
Mfr. Part No.3491L1P7I1
BrandRosemount
SGD1,180.96
Each
units
1 Panel Mount 230/115Vac selectable 115 V ac, 230 V ac 144.8mm 74.7mm 173mm - -40°C +55°C 200 (Fuse) mA, 4 → 20 mA ATEX IP40 Current, Voltage
RS Stock No. 746-7444
Mfr. Part No.1SVR550850R9500
BrandABB
SGD126.28
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 110 → 130 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. 818-4276
Mfr. Part No.61FGPN224ACCE
BrandOmron
SGD122.69
Each
units
1 DIN Rail Mount 8V ac 24 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -