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 804-4140
Référence fabricant7ML1106-2BA200A
MarqueSiemens
535,24 €
Each
Unité
Ultrasonic - - - 10m - -20°C +65°C - - - - - -
N° de stock RS 493-7186
Référence fabricant7ML5221-1BB11
MarqueSiemens
973,80 €
Each
Unité
Ultrasonic - - PBT - - -40°C +85°C - - 20 mA - - -
N° de stock RS 804-4112
Référence fabricant7ML1201-1FE00
MarqueSiemens
1.008,00 €
Each
Unité
Ultrasonic Vertical Relay - - - -40°C +60°C - - - - - -
N° de stock RS 804-4130
Référence fabricant7ML1115-0CA30
MarqueSiemens
541,80 €
Each
Unité
Ultrasonic - - - - - -20°C +95°C - - - - - -
N° de stock RS 804-3856
Référence fabricant7ML5501-0JA70
MarqueSiemens
398,81 €
Each
Unité
Capacitance Switch Vertical Relay Stainless Steel - - -30°C +100°C - - - 10bar - -
N° de stock RS 804-4137
Référence fabricant7ML1115-3CA30
MarqueSiemens
541,80 €
Each
Unité
Ultrasonic - - - - - -20°C +95°C - - - - - -
N° de stock RS 392-7841
Référence fabricant3UG3207-3A
MarqueSiemens
100,80 €
Each
Unité
Electrode Horizontal - - 2m - - +90°C - - - 10bar PTFE -
N° de stock RS 144-2585
Référence fabricant6DR4004-8J
MarqueSiemens
567,00 €
Each
Unité
Position - - - - - -30°C +80°C 35V 35V 20.5 mA - - 3.6 → 20.5 mA
N° de stock RS 804-3850
Référence fabricant7ML5501-0EA70
MarqueSiemens
302,00 €
Each
Unité
Capacitance Switch Vertical Relay Stainless Steel - - -30°C +100°C - - - 10bar - -
N° de stock RS 804-3866
Référence fabricant7ML5650-1BA00-0HB0
MarqueSiemens
837,00 €
Each
Unité
Capacitance Switch Vertical Relay Stainless Steel - - -40°C +400°C - - - 35bar - -
N° de stock RS 804-4159
Référence fabricant7ML1106-1BA200A
MarqueSiemens
520,95 €
Each
Unité
Ultrasonic - - - - - -20°C +65°C - - - - - -
N° de stock RS 513-2427
Référence fabricant7ML5610-0BD20
MarqueSiemens
212,40 €
Each
Unité
Capacitance - Relay Polyphenylene Sulfide - - -40°C +85°C - - 20 mA 10bar - -
N° de stock RS 144-2576
Référence fabricant7ML5202-0FA0
MarqueSiemens
1.623,33 €
Each
Unité
Ultrasonic Clamp Mount - PBT - - -40°C +60°C - 30V - - - 25 mA
N° de stock RS 113-711
Référence fabricant7ML5501-0EA10
MarqueSiemens
239,00 €
Each
Unité
Capacitance Vertical - Stainless Steel 1m - -30°C +100°C - - 82 mA 10bar - -
N° de stock RS 804-3963
Référence fabricant7ML5746-1BA00-1AA0
MarqueSiemens
557,10 €
Each
Unité
Vibrating Level Switch Vertical Relay Stainless Steel - - -50°C +250°C - - 400 mA 64bar - -
N° de stock RS 113-705
Référence fabricant7ML5430-2BA10
MarqueSiemens
1.388,00 €
Each
Unité
Radar Vertical - PBT - - -40°C +80°C - - 20 mA 30bar - -
N° de stock RS 804-3976
Référence fabricant7ML5731-7AA11-1DA0
MarqueSiemens
604,44 €
Each
Unité
Vibrating Level Switch Vertical PNP Stainless Steel - - -40°C +150°C - - 5 A 10bar - -
N° de stock RS 493-7192
Référence fabricant7ML5221-1DB11
MarqueSiemens
1.150,20 €
Each
Unité
Ultrasonic - - PBT - - -40°C +85°C - - 20 mA - - -
N° de stock RS 804-4146
Référence fabricant7ML1123-0CA50
MarqueSiemens
1.215,90 €
Each
Unité
Ultrasonic - - - - - -40°C +95°C - - - - - -
N° de stock RS 513-2449
Référence fabricant7ML5430-2BE10
MarqueSiemens
1.188,68 €
Each
Unité
Radar - - PBT - - -40°C +80°C - - 20 mA 3bar - -