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 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. 857-3360
FabrikantnummerVNY3
FabrikantCarlo Gavazzi
€ 187,45
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Conductive Chassis Mount Relay Nylon 6 2m 0°C +90°C - - - 10bar - - -
RS-stocknr. 513-2427
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RS-stocknr. 907-3868
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Level Switch Vertical SPST NC Stainless Steel 1.8m -40°C +60°C - - - - - - -
RS-stocknr. 780-0179
FabrikantnummerSSF22X100-M12X1
FabrikantCynergy3
€ 61,73
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Level Switch Vertical - Stainless Steel 1m -20°C +120°C - - 500 mA 10bar - - -
RS-stocknr. 185-9881
FabrikantnummerS01DB/F21/1
FabrikantMobrey
€ 560,86
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Liquid Level Switch Top Mount SPST Aluminium Bronze - - +210°C - - 2 A dc, 5 A ac 18bar Non Asbestos Sheet - -
RS-stocknr. 857-3168
FabrikantnummerCLD2EA1CM24
FabrikantCarlo Gavazzi
€ 230,85
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Conductive DIN Rail DPDT Relay ABS 100m -20°C +50°C - - 8 A - - - -
RS-stocknr. 616-2996
Fabrikantnummer208997
FabrikantGems Sensors
€ 50,75
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Electro Optic Horizontal, Vertical - Polyethersulfone 150mm -40°C +125°C - - 18 mA 250psi - - -
RS-stocknr. 901-0299
FabrikantnummerPS61.XXBXXHKMXX
FabrikantVega
€ 1.998,07
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Radar Sensor Panel Mount HART Polypropylene - -40°C +80°C 253V 48V 20 mA 3bar FPM 4 → 20 mA -
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FabrikantnummerDL10-11
FabrikantFlowline
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Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m -35°C +60°C - 24V 20 mA 30psi Viton - -
RS-stocknr. 613-3415
FabrikantnummerSN61.CXAGHKMX
FabrikantVega
€ 1.434,30
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Ultrasonic Vertical - Plastic - -40°C +80°C - - 20 mA 2bar EPDM Rubber - ATEX
RS-stocknr. 793-2812
FabrikantnummerMHF15-21NG1PSM
FabrikantSick
€ 87,00
Each
Aantal stuks
Optical Sensor Chassis Mount PNP Stainless Steel - -25°C +55°C - - 100 mA 16bar - - -
RS-stocknr. 869-7699
FabrikantnummerILSE-G1000-5
FabrikantCynergy3
€ 206,12
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Pressure Chassis Mount 4-20mA Stainless Steel - - - - 32V 28 mA 50bar - - -
RS-stocknr. 776-1604
Fabrikantnummer072.11
FabrikantFinder
€ 17,08
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Sensor Surface Mount Relay Stainless Steel 200m 0°C +100°C - - 30 A - - - -
RS-stocknr. 901-0289
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FabrikantVega
€ 1.145,53
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TDR Sensor Cable HART Stainless Steel 75m -40°C +80°C 253V 48V 20 mA 40bar EPDM Rubber, FFKM, FKM 4 → 20 mA -
RS-stocknr. 780-0330
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FabrikantCynergy3
€ 99,03
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Optical Sensor Chassis Mount Transistor Polysulfone 250mm -40°C +125°C - - 1 A 7bar - - -
RS-stocknr. 122-4867
FabrikantnummerLVL-A7-AG3A-E5PU-NA
FabrikantPepperl + Fuchs
€ 165,00
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Limit Switch Flush Mount PNP Stainless Steel 316L 5m -40°C +70°C - 35V 250 mA 40bar - <15 (DC-PNP) mA -
RS-stocknr. 613-3522
FabrikantnummerSG51.XXSGATPV
FabrikantVega
€ 238,15
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Tuning Fork Horizontal PNP Stainless Steel - -40°C +100°C - - 250 mA 64bar - - -
RS-stocknr. 869-7643
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FabrikantCynergy3
€ 252,59
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Pressure Cable 4-20mA Stainless Steel 3m -20°C +60°C - 32V 28 mA 20bar - - -
RS-stocknr. 776-1597
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RS-stocknr. 793-2816
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