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. 331-7547
Mfr. Part No.S1384
BrandAssemtech
$62.57
Each
units
1 - - 12 V dc 64mm 58mm 35mm - -10°C +50°C - - - -
RS Stock No. 746-7444
Mfr. Part No.1SVR550850R9500
BrandABB
$143.79
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 110 → 130 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 446-2632
Mfr. Part No.MCU901WX-A
$1,688.50
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. 884-2451
Mfr. Part No.4411AD1
BrandGIC
$78.53
Each
units
- - - 110 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 303-0414
Mfr. Part No.61FGPN8230AC
BrandOmron
$464.91
Each
units
1 DIN Rail Mount 8V ac 230 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 446-2654
Mfr. Part No.EFLC3 230VAC 50/60HZ
$212.33
Each
units
2 DIN Rail Mount 8V ac 230 V ac 85mm 70mm 63.5mm - -20°C +60°C - - - -
RS Stock No. 768-2075
Mfr. Part No.MET381.CX
BrandVega
$1,246.40
Each
units
1 Panel Mount - - - - - - -20°C +60°C - ATEX - Current
RS Stock No. 818-4272
Mfr. Part No.61FGPN2230AC
BrandOmron
$269.55
Each
units
1 DIN Rail Mount 8V ac 230 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -
RS Stock No. 363-4117
Mfr. Part No.B8LCR 110VAC
$125.96
Each
units
1 DIN Rail Mount 17V ac 110 V ac 92mm 40mm 80mm - -20°C +60°C - - - -
RS Stock No. 135-6323
Mfr. Part No.1SVR730850R2100
BrandABB
$194.69
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. 135-6331
Mfr. Part No.1SVR740850R0100
BrandABB
$214.59
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. 135-6324
Mfr. Part No.1SVR730850R2200
BrandABB
$201.64
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
New
RS Stock No. 206-7058
Mfr. Part No.CR - 222 223
BrandVega
$854.56
Each
units
1 Wall Mount 27V 100 → 230 V 162mm - 76mm - -40°C - 5 W - IP65 Voltage
RS Stock No. 144-9334
Mfr. Part No.84800054
BrandXylem
$2,114.42
Each
units
10 Panel Mounted 10V ac 240 V ac 96mm 96mm 130mm - -10°C +60°C 800 μA - - -
RS Stock No. 746-7447
Mfr. Part No.1SVR550851R9500
BrandABB
$151.07
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 → 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 348-7927
Mfr. Part No.MXL-10.115/RS
$210.46
Each
units
2 DIN Rail Mount 12V ac 24 V ac, 115 V ac 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 135-6325
Mfr. Part No.1SVR730850R0100
BrandABB
$194.69
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. 510-9304
Mfr. Part No.61F-GPN-BT 24VDC
BrandOmron
$252.86
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
New
RS Stock No. 214-6708
Mfr. Part No.61F-GP-N8H 230VAC
BrandOmron
$152.50
Each
units
3 - 8V 230 V 84mm - - - - - - - - -
RS Stock No. 201-0776
Mfr. Part No.CLD2EB1BU24
$162.40
Each
units
2 DIN-rail 5V 24 V 100000mm - - - - - - - - Analog