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 1 - 20 of 432 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
New
RS Stock No. 191-9503
BrandRS PRO
PHP997.64
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9504
BrandRS PRO
PHP2,370.36
Each
units
Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9509
BrandRS PRO
PHP854.45
Each
units
Float Horizontal NO/NC Polypropylene 1m - -20°C +100°C 240V 120V 600 mA - - 600 mA
New
RS Stock No. 191-9480
BrandRS PRO
PHP894.14
Each
units
Float Threaded NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9505
BrandRS PRO
PHP2,370.36
Each
units
Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9510
BrandRS PRO
PHP1,018.65
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - - 600 mA
New
RS Stock No. 191-9511
BrandRS PRO
PHP1,050.55
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - - 600 mA
New
RS Stock No. 191-9514
BrandRS PRO
PHP10,096.21
Each
units
Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
New
RS Stock No. 191-9490
BrandRS PRO
PHP6,876.07
Each
units
Float External NO High Density Polyethylene 5m - 0°C +55°C 250V 110V 10 A 10bar - 10 A
New
RS Stock No. 191-9487
BrandRS PRO
PHP929.93
Each
units
Float External NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9481
BrandRS PRO
PHP1,022.54
Each
units
Float Threaded NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9475
BrandRS PRO
PHP1,334.59
Each
units
Float Internal NO/NC Polypropylene 1m - -20°C +100°C 240V 120V 600 mA - - 600 mA
New
RS Stock No. 191-9482
BrandRS PRO
PHP947.83
Each
units
Float External NO/NC Nylon 1m - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9506
BrandRS PRO
PHP2,304.99
Each
units
Float Internal - Polyphenylene Sulphide - - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9483
BrandRS PRO
PHP963.40
Each
units
Float External NO/NC Nylon 1m - -20°C +75°C 240V 120V 600 mA - Silicone 600 mA
New
RS Stock No. 191-9515
BrandRS PRO
PHP10,096.21
Each
units
Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
New
RS Stock No. 191-9473
BrandRS PRO
PHP1,114.37
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9465
BrandRS PRO
PHP2,427.95
Each
units
Float Vertical NO/NC Buna (Float), Polyphenylene Sulphide (Stem) 1m - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9488
BrandRS PRO
PHP1,066.12
Each
units
Float External NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9508
BrandRS PRO
PHP2,642.73
Each
units
Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
Related Products
Fill level monitoring by means of guided microwavesUpdated ...
Description:
Fill level monitoring by means of guided microwavesUpdated display of the current fill levelProgrammable hysteresis and window functionSimple operation via the user menuThe length of the sensor probe can be shortened as desiredAvailable probes 228 mm (RS order no. 488-047) ...
Comprehensive range of accessories for Flowline's successful EchoPulse ...
Description:
Comprehensive range of accessories for Flowline's successful EchoPulse series. Accessories include a variety Reducer bushings covering a range of Thread forms & diameters, ANSI flanges, indicators, enclosures & controllers. Thanks to the wide array of accessories on offer the EchoPulse ...
Robust & reliable 26GHz pulse radar level transmitter ...
Description:
Robust & reliable 26GHz pulse radar level transmitter from Flowline provides the user with continuous level measurement up to 10m. EchoPulse LR15 series is designed for use within a comprehensive range of applications, including corrosive and agitation media. IP67 rated ...
Single probe holder with black vinyl coverStainless steel ...
Description:
Single probe holder with black vinyl coverStainless steel probe (to EN 10088//3) includedMaximum operating temperature; 70°CConnection via M3 screw terminal or crimp (supplied)Side vents incorporated in coverDimensions; L100 x Dia.20 (max.).