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. 303-0414
Mfr. Part No.61FGPN8230AC
BrandOmron
$352.10
Each
units
1 DIN Rail Mount 8V ac 230 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 818-4272
Mfr. Part No.61FGPN2230AC
BrandOmron
$130.27
Each
units
1 DIN Rail Mount 8V ac 230 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -
RS Stock No. 510-9297
Mfr. Part No.61F-GPN-BC 24VDC
BrandOmron
$397.13
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 884-2455
Mfr. Part No.4421AD1
BrandGIC
$83.07
Each
units
- - - 240 V ac - - - 0 → 10s -10°C +60°C - - - -
RS Stock No. 446-2654
Mfr. Part No.EFLC3 230VAC 50/60HZ
$115.84
Each
units
2 DIN Rail Mount 8V ac 230 V ac 85mm 70mm 63.5mm - -20°C +60°C - - - -
RS Stock No. 510-9304
Mfr. Part No.61F-GPN-BT 24VDC
BrandOmron
$292.16
Each
units
- DIN Rail Mount 5V ac 24 V dc 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 818-4276
Mfr. Part No.61FGPN224ACCE
BrandOmron
$123.76
Each
units
1 DIN Rail Mount 8V ac 24 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -
RS Stock No. 348-7911
Mfr. Part No.MXL-10.924/RS
$195.70
Each
units
2 DIN Rail Mount 12V ac 24 V dc 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 240-9005
Mfr. Part No.MK9151.11 2-450kOhm DC24V
BrandDold
$156.50
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
$309.89
Each
units
1 DIN Rail Mount - 12 → 24 V dc 12.8mm 46mm 28.8mm - -10°C +55°C - - - -
RS Stock No. 331-7547
Mfr. Part No.S1384
BrandAssemtech
$46.02
Each
units
1 - - 12 V dc 64mm 58mm 35mm - -10°C +50°C - - - -
RS Stock No. 348-7933
Mfr. Part No.MXL-10.230/RS
$137.57
Each
units
2 DIN Rail Mount 12V ac 24 V ac, 230 V ac 104mm 22.5mm 80mm - -20°C +55°C - - - -
RS Stock No. 892-9390
Mfr. Part No.701PBKKF
BrandRosemount
$468.62
Each
units
1 Panel Mount - 7.2 V - 74mm 52mm - -40°C +85°C - - - Voltage
RS Stock No. 361-1596
Mfr. Part No.45225 230VAC
$158.93
Each
units
1 DIN Rail Mount 17V ac 230 V ac 78mm 45mm 99mm - -20°C +60°C - - - -
RS Stock No. 804-3945
Mfr. Part No.7ML5050-0AA11-1DA0
BrandSiemens
$1,593.18
Each
units
2 Panel Mount - 10 → 32 V dc, 100 → 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -
RS Stock No. 804-3954
Mfr. Part No.7ML5050-0AA21-1DA0
BrandSiemens
$1,473.12
Each
units
2 Panel Mount - 10 → 32 V dc, 100 → 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -
RS Stock No. 621-1571
$158.93
Each
units
2 Panel Mount 17V ac 115 V ac, 230 V ac 75mm 48mm 48mm - -20°C +60°C - - - -
RS Stock No. 361-1603
Mfr. Part No.B8LCR 230VAC
$75.68
Each
units
1 - 17V ac 230 V ac 92mm 40mm 80mm - -20°C +60°C - - - -
RS Stock No. 124-0115
Mfr. Part No.LI99-1001
BrandFlowline
$82.18
Each
units
- Plug-In - - - - - - - - - - - -
RS Stock No. 465-0766
Mfr. Part No.MK9151N.12 2-450kOHM DC24V 0.2-20s
BrandDold
$195.25
Each
units
1 DIN Rail Mount 10V ac 24 V dc 90mm 22.5mm 98mm - -20°C +60°C - - - -
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