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. 746-7491
Mfr. Part No.1SVR450052R0100
BrandABB
$266.06
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 380 → 415 V ac 109.5mm 45mm 78mm - - - - - - -
RS Stock No. 746-7435
Mfr. Part No.1SVR550855R9500
BrandABB
$110.26
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 24 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 746-7447
Mfr. Part No.1SVR550851R9500
BrandABB
$99.26
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 220 → 240 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 746-7444
Mfr. Part No.1SVR550850R9500
BrandABB
$99.26
Each
units
- DIN Rail Mount, Screw Mount, Snap-On 30V ac 110 → 130 V ac 88.5mm 22.5mm 78mm - - - - - - -
RS Stock No. 135-6323
Mfr. Part No.1SVR730850R2100
BrandABB
$158.72
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. 135-6327
Mfr. Part No.1SVR730850R0200
BrandABB
$161.59
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
$164.36
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. 135-6330
Mfr. Part No.1SVR740850R2200
BrandABB
$175.83
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. 135-6329
Mfr. Part No.1SVR740850R2100
BrandABB
$169.81
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. 135-6328
Mfr. Part No.1SVR730850R0300
BrandABB
$219.35
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. 746-7431
Mfr. Part No.1SVR550851R9400
BrandABB
$109.99
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
$175.81
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
$185.50
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. 135-6334
Mfr. Part No.1SVR740850R0300
BrandABB
$247.01
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. 135-6325
Mfr. Part No.1SVR730850R0100
BrandABB
$164.71
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