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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Description Prix 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
N° de stock RS 780-0179
Référence fabricantSSF22X100-M12X1
MarqueCynergy3
63,58 €
Each
Unité
Level Switch Vertical - Stainless Steel 1m - -20°C +120°C - - 500 mA 10bar - -
N° de stock RS 780-0315
Référence fabricantOLS700D3LSH
MarqueCynergy3
38,55 €
Each
Unité
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 7bar - -
N° de stock RS 493-6802
Référence fabricantSG51.XXSGBTPV
MarqueVega
222,01 €
Each
Unité
Tuning Fork Horizontal PNP Stainless Steel - - -40°C +100°C - - 250 mA 64bar - -
N° de stock RS 793-2828
Référence fabricantMHF15-21NG1TSM
MarqueSick
90,50 €
Each
Unité
Optical Sensor Chassis Mount NPN Stainless Steel - - -25°C +55°C - - 100 mA 16bar - -
N° de stock RS 857-7781
Référence fabricantVP02E
125,63 €
Each
Unité
Optical Sensor Cable NPN Polysulfone 2m - -20°C +80°C - - 200 mA 10bar - -
N° de stock RS 613-3522
Référence fabricantSG51.XXSGATPV
MarqueVega
238,15 €
Each
Unité
Tuning Fork Horizontal PNP Stainless Steel - - -40°C +100°C - - 250 mA 64bar - -
N° de stock RS 122-4867
Référence fabricantLVL-A7-AG3A-E5PU-NA
174,00 €
Each
Unité
Limit Switch Flush Mount PNP Stainless Steel 316L 5m - -40°C +70°C - 35V 250 mA 40bar - <15 (DC-PNP) mA
N° de stock RS 354-290
Référence fabricantPS31SUS3041000MM
MarqueOmron
38,12 €
1 Kit
Kit(s)
Electrode Chassis Mount - Phenol Resin, Stainless Steel - - - +70°C - - - - - -
N° de stock RS 780-0387
Référence fabricantCW1
MarqueCynergy3
3,00 €
Each
Unité
Weight - - Polypropylene - - -20°C - - - - 100bar - -
N° de stock RS 889-1346
Référence fabricantDL10-11
MarqueFlowline
297,86 €
Each
Unité
Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
N° de stock RS 889-1393
Référence fabricantDX10-00-8FT
MarqueFlowline
286,62 €
Each
Unité
Ultrasonic Level Sensor Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 15 (Nominal) mA 30psi Viton -
N° de stock RS 780-0305
Référence fabricantOLS500D3L
MarqueCynergy3
38,55 €
Each
Unité
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -
N° de stock RS 906-8042
Référence fabricant01950
MarqueGems Sensors
105,87 €
Each
Unité
Level Switch Vertical SPST NO Stainless Steel 24in - -40°C +149°C - - - 750psi - -
N° de stock RS 794-3415
Référence fabricant211000A1NA
MarqueRosemount
160,82 €
Each
Unité
Fork Level Switch Side or Top Mount Direct Load Stainless Steel - - -40°C +150°C - - 500 mA 100bar - -
N° de stock RS 780-0175
Référence fabricantSSF22X100-18N
MarqueCynergy3
63,58 €
Each
Unité
Level Switch Vertical - Stainless Steel 1m - -20°C +120°C - - 500 mA 10bar - -
N° de stock RS 907-3937
Référence fabricant79999
MarqueGems Sensors
154,54 €
Each
Unité
Level Switch Vertical SPST NO Stainless Steel 600mm - -40°C +249°C - - - 750psi - -
N° de stock RS 740-6446
Référence fabricantLMT110
180,18 €
Each
Unité
Electronic Flush Mount PNP NO/NC FPM, PA12, PEEK, Stainless Steel - - 0°C +60°C - - 50 mA 16bar PEEK -
N° de stock RS 204-6749
Référence fabricant003S2
MarqueMobrey
228,80 €
Each
Unité
Gap Sensor Level Alarm Switch Horizontal, Vertical Relay Polyphenylene Sulfide 3m - -20°C +70°C - - 1 A 5bar - -
N° de stock RS 794-3418
Référence fabricant211001A1NA
MarqueRosemount
160,82 €
Each
Unité
Fork Level Switch Side or Top Mount Direct Load Stainless Steel - - -40°C +150°C - - 500 mA 100bar - -
N° de stock RS 780-0302
Référence fabricantOLS500D3
MarqueCynergy3
38,55 €
Each
Unité
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -