Level Sensors

Level sensors determine how full or how empty a container is. Level sensors provide an output electrical signal at predetermined levels to communicate when to open or close control valves.

Level Sensor Types

The choice of sensors is usually determined by which substance is being measured, the environment in which the sensor is to used and in which position the sensor needs to be mounted. Some of the most common level sensors are:

Capacitive level switches

  • Capacitive level switches provide a basic full/empty level indication determined by the mounting position of the sensor. This type of switch is non-contact and uses a sensing field to determine liquid levels. Capacitive sensors provide accurate switching even with heavy residue build-up.

Vibrating level probes

  • Vibrating level probes use a rod or a fork that constantly produce high-frequency vibrations. When the vibrating probe comes into contact with the medium, the vibration changes and the vibrating level switch outputs a switching command. Vibrating level switches are used as overfill protection devices or low-level indicators in liquids as well as in granular and powder bulk solids.

Conductive level switches

  • Conductive level switches are sensors that use stainless steel probes with an electrical contact output to measure a specific liquid level. Used in conjunction with a level control relay to set and monitor each probe. Applications include ponds, reservoirs, sumps, pharmaceuticals, closed vessels and open tanks.

Ultrasonic level sensors

  • Ultrasonic level sensors generate ultrasonic sound pulses that are reflected by the surface of a liquid medium. The time travelled by the ultrasonic pulse is calculated by the sensor which then determines the distance of the liquid to give an accurate fill level. The ultrasonic sensors response is influenced by turbulence, pressure, moisture, and temperature.

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Omschrijving Prijs Device Type Mounting Type Switch Output Body Material Cable Length Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating Hazardous Area Certification
RS-stocknr. 780-0302
FabrikantnummerOLS500D3
FabrikantCynergy3
38,55 €
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Aantal stuks
Optical Sensor Chassis Mount Transistor Polysulfone 250mm -25°C +80°C - - 100 mA 20bar - - -
RS-stocknr. 889-1378
FabrikantnummerDS14-01
FabrikantFlowline
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Controller, Ultrasonic Level Switch Vertical - Polycarbonate 1.2m -35°C +60°C 24V 24V - 30psi Viton 1 A -
RS-stocknr. 740-6442
FabrikantnummerLMT100
Fabrikantifm electronic
180,18 €
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Electronic Flush Mount PNP NO/NC FPM, PA12, PEEK, Stainless Steel - 0°C +60°C - - 50 mA 16bar PEEK - -
RS-stocknr. 869-7661
FabrikantnummerILLS-G0100-D-003
FabrikantCynergy3
260,17 €
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Pressure Cable 0.5-4.5V Stainless Steel 3m -20°C +60°C - 32V - 20bar - - -
RS-stocknr. 869-7683
FabrikantnummerILSE-G0250-5
FabrikantCynergy3
212,30 €
Each
Aantal stuks
Pressure Chassis Mount 4-20mA Stainless Steel - - - - 32V 28 mA 20bar - - -
RS-stocknr. 124-0113
FabrikantnummerDL34-01
FabrikantFlowline
608,93 €
Each
Aantal stuks
Ultrasonic Level Sensor Vertical - PC 1.2m -35°C +60°C - 24V 20 mA 2bar FKM 1 A -
RS-stocknr. 768-1984
FabrikantnummerWELLS51.ED
FabrikantVega
630,90 €
Each
Aantal stuks
Pressure Sensor Suspended - Stainless Steel - -40°C +80°C - - 20 mA - - - -
RS-stocknr. 892-9344
Fabrikantnummer2120D1AH1I1AA0000
FabrikantRosemount
568,27 €
Each
Aantal stuks
Fork Level Switch Side or Top Mount - Glass Filled Nylon - -40°C +150°C - - - 100bar Non Asbestos Carbon Fibre - -
RS-stocknr. 794-3392
FabrikantnummerLFP2000-A4NMB
FabrikantSick
378,50 €
Each
Aantal stuks
Guided Radar Vertical 0-10 V, 4-20 mA PBT - -20°C +100°C - - 100 mA 10bar PTFE - -
RS-stocknr. 793-2825
FabrikantnummerMHF15-21NG1HSM
FabrikantSick
90,50 €
Each
Aantal stuks
Optical Sensor Chassis Mount PNP Stainless Steel - -25°C +55°C - - 100 mA 16bar - - -
RS-stocknr. 124-0138
FabrikantnummerLV10-1301
FabrikantFlowline
116,91 €
Each
Aantal stuks
Buoyancy Level Switch Vertical NO/NC PP 3m -40°C +90°C - - - 2bar - 250 mA -
RS-stocknr. 768-2066
FabrikantnummerMET381.XX
FabrikantVega
527,44 €
Each
Aantal stuks
Sensor Rail Mounting, Wall Mount Relay Plastic - -20°C +60°C - - 20 mA - - - -
RS-stocknr. 794-3421
Fabrikantnummer2120D1AT1NAAA0000
FabrikantRosemount
335,09 €
Each
Aantal stuks
Fork Level Switch Side or Top Mount Direct Load Glass Filled Nylon - -40°C +150°C - - 500 mA 100bar Non Asbestos Sheet - -
RS-stocknr. 494-1084
FabrikantnummerLLNE8651721
FabrikantHoneywell
176,18 €
Each
Aantal stuks
Level Switch Exterior Mounting NPN Stainless Steel - -40°C +125°C - - 60 mA 25bar - - -
RS-stocknr. 768-2028
FabrikantnummerVIBS61.EXX2RA
FabrikantVega
495,14 €
Each
Aantal stuks
Sensor Cable Relay - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - - -
RS-stocknr. 794-3434
Fabrikantnummer211010A1NA
FabrikantRosemount
160,82 €
Each
Aantal stuks
Fork Level Switch Side or Top Mount PNP Stainless Steel - -40°C +150°C - - 500 mA 100bar - - -
RS-stocknr. 613-3386
FabrikantnummerSG51.XXTGATPVL
FabrikantVega
290,63 €
Each
Aantal stuks
Tuning Fork Horizontal PNP Stainless Steel - -40°C +150°C - - 20 mA 64bar - - -
RS-stocknr. 185-9869
FabrikantnummerS01DB/F68/4
FabrikantMobrey
514,80 €
Each
Aantal stuks
Liquid Level Switch Side Mount SPST Aluminium Bronze - - +210°C - - 2 A dc, 3 A ac 18bar Non Asbestos Sheet - -
RS-stocknr. 354-335
FabrikantnummerF0301SUS201ELECTRODE
FabrikantOmron
13,49 €
Each
Aantal stuks
Electrode Chassis Mount - Stainless Steel - - +70°C - - - - - - -
RS-stocknr. 869-7680
FabrikantnummerILSE-G0100-5
FabrikantCynergy3
212,30 €
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Aantal stuks
Pressure Chassis Mount 4-20mA Stainless Steel - - - - 32V 28 mA 20bar - - -
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