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.

...
Read more Read less

Filters

Viewing 41 - 60 of 385 products
Results per page
Description Price 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 Stock No. 889-1390
Mfr. Part No.DX10-10
BrandFlowline
kr 3 132,08
Each
Units
Ultrasonic Level Sensor Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 15 (Nominal) mA 30psi Viton -
RS Stock No. 794-3415
Mfr. Part No.211000A1NA
BrandRosemount
kr 1 603,24
Each
Units
Fork Level Switch Side or Top Mount Direct Load Stainless Steel - - -40°C +150°C - - 500 mA 100bar - -
RS Stock No. 901-0289
Mfr. Part No.FX81.IXETBFHXKMXX
BrandVega
kr 11 420,02
Each
Units
TDR Sensor Cable HART Stainless Steel 75m - -40°C +80°C 253V 48V 20 mA 40bar EPDM Rubber, FFKM, FKM 4 → 20 mA
RS Stock No. 185-9853
Mfr. Part No.S01DB/F68/1
BrandMobrey
kr 4 923,62
Each
Units
Liquid Level Switch Side Mount SPST Aluminium Bronze - - - +210°C - - 2 A dc, 5 A ac 18bar Non Asbestos Sheet -
RS Stock No. 498-7349
Mfr. Part No.VB61.XXAGDRKMX
BrandVega
kr 7 726,23
Each
Units
Vibrating Rod Free Relay Plastic - - -50°C +150°C - - 1 A dc, 3 A ac 16bar - -
RS Stock No. 889-1330
Mfr. Part No.DL10-00
BrandFlowline
kr 3 351,95
Each
Units
Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS Stock No. 889-1362
Mfr. Part No.DL34-00
BrandFlowline
kr 6 044,58
Each
Units
Ultrasonic Level Sensor Vertical 2 Wire Relay Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS Stock No. 377-9816
Mfr. Part No.VC5510PNOP
kr 470,13
Each
Units
Capacitance Switch Chassis Mount PNP ABS/Polycarbonate 1.5m - 0°C +50°C - 30V 100 mA - - -
RS Stock No. 889-1393
Mfr. Part No.DX10-00-8FT
BrandFlowline
kr 3 000,31
Each
Units
Ultrasonic Level Sensor Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 15 (Nominal) mA 30psi Viton -
RS Stock No. 768-2066
Mfr. Part No.MET381.XX
BrandVega
kr 5 258,13
Each
Units
Sensor Rail Mounting, Wall Mount Relay Plastic - - -20°C +60°C - - 20 mA - - -
RS Stock No. 794-3399
Mfr. Part No.LFP1000-G1NMB
BrandSick
kr 8 210,25
Each
Units
Guided Radar Vertical 0-10 V, 4-20 mA Stainless Steel - IO-LINK -20°C +150°C - - 100 mA 16bar PEEK -
RS Stock No. 124-0142
Mfr. Part No.LO10-1305
BrandFlowline
kr 1 699,71
Each
Units
Flowline Detection Switch Vertical NO/NC PP 3m - -40°C +80°C - 36V - 10bar FKM 25 mA
RS Stock No. 768-1993
Mfr. Part No.WELLS51.EE
BrandVega
kr 7 525,34
Each
Units
Sensor Suspension - Stainless Steel - - -40°C +80°C - - 20 mA - - -
RS Stock No. 889-1346
Mfr. Part No.DL10-11
BrandFlowline
kr 2 969,46
Each
Units
Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS Stock No. 407-2368
Mfr. Part No.LA9RM201
kr 635,04
Each
Units
Electrode Cable Suspension - - - - - +100°C - - - - - -
RS Stock No. 616-3028
Mfr. Part No.208995
kr 532,90
Each
Units
Electro Optic Horizontal, Vertical - Polyethersulfone - - -40°C +125°C - - 18 mA 250psi - -
RS Stock No. 780-0305
Mfr. Part No.OLS500D3L
BrandCynergy3
kr 384,34
Each
Units
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -
RS Stock No. 768-2069
Mfr. Part No.SWINGS52.EEA7CV
BrandVega
kr 3 371,15
Each
Units
Level Switch Chassis Mount PNP - - - - +150°C - - - - - -
RS Stock No. 804-3856
Mfr. Part No.7ML5501-0JA70
BrandSiemens
kr 6 278,11
Each
Units
Capacitance Switch Vertical Relay Stainless Steel - - -30°C +100°C - - - 10bar - -
RS Stock No. 869-7659
Mfr. Part No.ILLS-G0750-5-010
BrandCynergy3
kr 3 467,92
Each
Units
Pressure Cable 4-20mA Stainless Steel 10m - -20°C +60°C - 32V 28 mA 50bar - -
Related Products
Professional range of LS-2050 Series level switches from ...
Description:
Professional range of LS-2050 Series level switches from Gems Sensors. These units are designed to solve the problem of point level sensing in tanks with inaccessible tops or bottoms or at intermediate locations in larger tanks. The float pivots with ...
The LFV200 product family of universal vibrating level ...
Description:
The LFV200 product family of universal vibrating level switches precisely detects predefined liquid levels in systems to the millimeter. The switches can emit a signal to prevent overfilling, a switching signal for refilling, or a dry-run signal for pump protection. ...
The Telemecanique float switch is a mechanical alternator ...
Description:
The Telemecanique float switch is a mechanical alternator type open tank float switch used to detect the rising or falling liquid level. Its outer body is made from painted cold rolled steel material. Its operating temperature ranges between -22°F and ...
The Telemecanique float switch is a mechanical alternator ...
Description:
The Telemecanique float switch is a mechanical alternator type closed tank float switch used to detect the rising or falling liquid level. Its outer body is made from painted cold rolled steel material. This switch consists of a switch, rod ...