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 sensor’s 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 Communication Protocol Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating
RS-stocknr. 493-6802
FabrikantnummerSG51.XXSGBTPV
FabrikantVega
241,39 €
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Tuning Fork Horizontal PNP Stainless Steel - - -40°C +100°C - - 250 mA 64bar - -
RS-stocknr. 613-3522
FabrikantnummerSG51.XXSGATPV
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Tuning Fork Horizontal PNP Stainless Steel - - -40°C +100°C - - 250 mA 64bar - -
RS-stocknr. 468-3463
FabrikantnummerSN61XXAGHKMX
FabrikantVega
1.183,53 €
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Ultrasonic - - Plastic - - -40°C +80°C - - 20 mA 2bar - -
RS-stocknr. 768-2066
FabrikantnummerMET381.XX
FabrikantVega
554,03 €
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Sensor Rail Mounting, Wall Mount Relay Plastic - - -20°C +60°C - - 20 mA - - -
RS-stocknr. 613-3386
FabrikantnummerSG51.XXTGATPVL
FabrikantVega
305,28 €
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Tuning Fork Horizontal PNP Stainless Steel - - -40°C +150°C - - 20 mA 64bar - -
RS-stocknr. 768-2028
FabrikantnummerVIBS61.EXX2RA
FabrikantVega
509,99 €
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Aantal stuks
Sensor Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS-stocknr. 768-2000
FabrikantnummerWAVES61.EEJ2RA
FabrikantVega
503,68 €
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Aantal stuks
Vibrating Level Switch Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS-stocknr. 768-1974
FabrikantnummerSONS62.EXXA
FabrikantVega
963,51 €
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Vibrating Rod Chassis Mount - ABS - - -40°C +80°C - - 20 mA - - -
RS-stocknr. 768-2019
FabrikantnummerWAVES61.EEJ2RC
FabrikantVega
623,79 €
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Vibrating Level Switch Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS-stocknr. 498-7349
FabrikantnummerVB61.XXAGDRKMX
FabrikantVega
814,07 €
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Vibrating Rod Free Relay Plastic - - -50°C +150°C - - 1 A dc, 3 A ac 16bar - -
RS-stocknr. 613-3409
FabrikantnummerSN62.CXAGHKMX
FabrikantVega
1.650,56 €
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Aantal stuks
Ultrasonic - - Plastic - - -40°C +80°C - - 20 mA 2bar - -
RS-stocknr. 768-1980
FabrikantnummerWELLS51.EC
FabrikantVega
676,67 €
Each
Aantal stuks
Sensor Suspension - Stainless Steel - - -40°C +80°C - - 20 mA - - -
RS-stocknr. 468-3457
FabrikantnummerSN62XXAGVDMA
FabrikantVega
1.807,17 €
Each
Aantal stuks
Ultrasonic - - Aluminium - - -40°C +80°C - - 20 mA 2bar - -
RS-stocknr. 468-3479
FabrikantnummerSN61XXAGHKMA
FabrikantVega
1.372,33 €
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Ultrasonic - - Plastic - - -40°C +80°C - - 20 mA 2bar - -
RS-stocknr. 768-1956
FabrikantnummerSONS61.EXXX
FabrikantVega
749,69 €
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Vibrating Rod - Relay - - - - - - - 20 mA - - -
RS-stocknr. 768-2069
FabrikantnummerSWINGS52.EEA7CV
FabrikantVega
348,30 €
Each
Aantal stuks
Level Switch Chassis Mount PNP - - - - +150°C - - - - - -
RS-stocknr. 768-2006
FabrikantnummerWAVES61.EXX2RD
FabrikantVega
486,39 €
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Aantal stuks
Vibrating Level Switch Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS-stocknr. 768-2072
FabrikantnummerTRENN149AEX.X
FabrikantVega
262,87 €
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Sensor DIN Rail - - - - - - - - 20 mA - - -
RS-stocknr. 901-0299
FabrikantnummerPS61.XXBXXHKMXX
FabrikantVega
2.058,01 €
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Radar Sensor Panel Mount HART Polypropylene - - -40°C +80°C 253V 48V 20 mA 3bar FPM 4 → 20 mA
RS-stocknr. 206-7072
FabrikantnummerRA - 222 226
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457,65 €
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Ultrasonic/Radar 1.5" G/BSP Thread 4-20mA PVDF 5m - -40°C 80°C - 35V 20 mA 3bar FKM -