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. 446-2632
Mfr. Part No.MCU901WX-A
BrandMobrey
HK$8,202.83
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. 892-9766
Mfr. Part No.3491L1P6I1
BrandRosemount
HK$6,422.44
Each
units
1 Wall Mount 230/115Vac selectable 115 V ac, 230 V ac 213mm 185mm 84mm - -40°C +55°C 4 → 20 mA, 200 (Fuse) mA ATEX IP65 Current, Voltage
RS Stock No. 818-4272
Mfr. Part No.61FGPN2230AC
BrandOmron
HK$725.84
Each
units
1 DIN Rail Mount 8V ac 230 V ac 49.4mm 38mm 80mm - -10°C +55°C - - - -
RS Stock No. 892-9390
Mfr. Part No.701PBKKF
BrandRosemount
HK$2,353.65
Each
units
1 Panel Mount - 7.2 V - 74mm 52mm - -40°C +85°C - - - Voltage
RS Stock No. 892-9760
Mfr. Part No.3491L1P7I1
BrandRosemount
HK$7,064.69
Each
units
1 Panel Mount 230/115Vac selectable 115 V ac, 230 V ac 144.8mm 74.7mm 173mm - -40°C +55°C 4 → 20 mA, 200 (Fuse) mA ATEX IP40 Current, Voltage
RS Stock No. 303-0414
Mfr. Part No.61FGPN8230AC
BrandOmron
HK$661.10
Each
units
1 DIN Rail Mount 8V ac 230 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 331-7547
Mfr. Part No.S1384
BrandAssemtech
HK$310.40
Each
units
1 - - 12 V dc 64mm 58mm 35mm - -10°C +50°C - - - -
RS Stock No. 124-0129
Mfr. Part No.LI55-1411
BrandFlowline
HK$6,354.73
Each
units
1 DIN Rail Mount, Panel Mount - 85 → 265 V ac, 90 → 265 V dc 119mm 62mm 143mm - -40°C +65°C 3 A - IP65 Sensor
RS Stock No. 361-1603
Mfr. Part No.B8LCR 230VAC
HK$510.00
Each
units
1 - 17V ac 230 V ac 92mm 40mm 80mm - -20°C +60°C - - - -
RS Stock No. 111-3527
Mfr. Part No.K7L-AT50B
BrandOmron
HK$1,794.10
Each
units
1 DIN Rail Mount - 12 → 24 V dc 12.8mm 46mm 28.8mm - -10°C +55°C - - - -
RS Stock No. 303-0391
Mfr. Part No.61FGPN8110AC
BrandOmron
HK$661.10
Each
units
1 DIN Rail Mount 8V ac 110 V ac 84mm 38mm 49.4mm - -10°C +55°C - - - -
RS Stock No. 135-6329
Mfr. Part No.1SVR740850R2100
BrandABB
HK$875.56
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. 361-1596
Mfr. Part No.45225 230VAC
HK$519.48
Each
units
1 DIN Rail Mount 17V ac 230 V ac 78mm 45mm 99mm - -20°C +60°C - - - -
RS Stock No. 135-6330
Mfr. Part No.1SVR740850R2200
BrandABB
HK$906.46
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. 889-1536
Mfr. Part No.LI55-1201
BrandFlowline
HK$5,537.84
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
HK$875.56
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. 446-2654
Mfr. Part No.EFLC3 230VAC 50/60HZ
HK$751.86
Each
units
2 DIN Rail Mount 8V ac 230 V ac 85mm 70mm 63.5mm - -20°C +60°C - - - -
RS Stock No. 348-7933
Mfr. Part No.MXL-10.230/RS
HK$802.04
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. 386-8556
Mfr. Part No.202995/00-91/000
BrandJumo
HK$2,118.83
Each
units
3 - - - 66mm - - - -10°C +60°C - - - -
RS Stock No. 804-3954
Mfr. Part No.7ML5050-0AA21-1DA0
BrandSiemens
HK$9,922.24
Each
units
2 Panel Mount - 10 → 32 V dc, 100 → 230 V ac 190mm 144mm 155mm - -20°C +50°C - - - -
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