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. 363-4117
Mfr. Part No.B8LCR 110VAC
$115.68
Each
units
1 DIN Rail Mount 17V ac 110 V ac 92mm 40mm 80mm - -20°C +60°C - - - -
RS Stock No. 240-9005
Mfr. Part No.MK9151.11 2-450kOhm DC24V
BrandDold
$231.04
Each
units
1 DIN Rail Mount 10V ac 24 V dc 82mm 22.5mm 99mm - -20°C +60°C - - - -
RS Stock No. 780-0298
Mfr. Part No.SM20
BrandCynergy3
$144.87
Each
units
1, 2, 3 DIN Rail Mount - 240 V ac, 415 V ac - - - - 0°C +50°C - - - -
RS Stock No. 135-6325
Mfr. Part No.1SVR730850R0100
BrandABB
$193.16
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. 135-6331
Mfr. Part No.1SVR740850R0100
BrandABB
$206.70
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
$281.01
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. 892-9766
Mfr. Part No.3491L1P6I1
BrandRosemount
$1,273.73
Each
units
1 Wall Mount 230/115Vac selectable 115 V ac, 230 V ac 213mm 185mm 84mm - -40°C +55°C 200 (Fuse) mA, 4 → 20 mA ATEX IP65 Current, Voltage
RS Stock No. 144-0875
Mfr. Part No.K7L-UDPB
BrandOmron
$833.14
Each
units
1 Plug-In 24V dc 12 24 V dc 12.8mm 28.8mm 46mm - -10°C +55°C - - - Voltage
RS Stock No. 804-3945
Mfr. Part No.7ML5050-0AA11-1DA0
BrandSiemens
$2,104.69
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
$108.89
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 746-7435
Mfr. Part No.1SVR550855R9500
BrandABB
$142.67
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 24 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 348-7911
Mfr. Part No.MXL-10.924/RS
$221.57
Each
units
2 DIN Rail Mount 12V ac 24 V dc 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 892-9340
Mfr. Part No.3493L1P7I1
BrandRosemount
$3,353.61
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 - IP40 Current, Voltage
RS Stock No. 884-2464
Mfr. Part No.4431AD1
BrandGIC
$97.34
Each
units
- - - 400 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 746-7491
Mfr. Part No.1SVR450052R0100
BrandABB
$342.22
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 380 415 V ac 109.5mm 45mm 78mm - - - - - - -
RS Stock No. 240-9011
Mfr. Part No.MK9151.11 2-450kOhm AC220-240V
BrandDold
$232.90
Each
units
1 DIN Rail Mount 10V ac 220 240 V ac 82mm 22.5mm 99mm - -20°C +60°C - - - -
RS Stock No. 135-6324
Mfr. Part No.1SVR730850R2200
BrandABB
$200.06
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. 348-7927
Mfr. Part No.MXL-10.115/RS
$208.81
Each
units
2 DIN Rail Mount 12V ac 115 V ac, 24 V ac 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 746-7447
Mfr. Part No.1SVR550851R9500
BrandABB
$142.67
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 768-2075
Mfr. Part No.MET381.CX
BrandVega
$1,189.07
Each
units
- - - - - - - - -20°C +60°C - ATEX - -
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