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. 191-9518
BrandRS PRO
MYR874.49
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
MYR96.52
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9486
BrandRS PRO
MYR76.16
Each
units
Float External NO/NC Nylon - - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9480
BrandRS PRO
MYR77.44
Each
units
Float Threaded NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9488
BrandRS PRO
MYR92.34
Each
units
Float External NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9511
BrandRS PRO
MYR91.00
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
MYR874.49
Each
units
Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
New
RS Stock No. 191-9484
BrandRS PRO
MYR86.48
Each
units
Float External NO/NC Polypropylene 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9479
BrandRS PRO
MYR72.93
Each
units
Float Threaded NO/NC Nylon - - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9474
BrandRS PRO
MYR90.52
Each
units
Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9512
BrandRS PRO
MYR566.53
Each
units
Float External, Horizontal NO/NC 304 Stainless Steel (Stem), 316 Stainless Steel (Float) - - - +120°C 300V 300V 500 mA 5bar - 500 mA
New
RS Stock No. 191-9483
BrandRS PRO
MYR83.45
Each
units
Float External NO/NC Nylon 1m - -20°C +75°C 240V 120V 600 mA - Silicone 600 mA
New
RS Stock No. 191-9498
BrandRS PRO
MYR82.64
Each
units
Float External, Vertical NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9485
BrandRS PRO
MYR88.10
Each
units
Float External NO/NC Polypropylene 1m - -20°C +100°C 240V 120V 600 mA - Silicone 600 mA
New
RS Stock No. 191-9515
BrandRS PRO
MYR874.49
Each
units
Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
New
RS Stock No. 191-9471
BrandRS PRO
MYR97.20
Each
units
Float Vertical NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9502
BrandRS PRO
MYR91.67
Each
units
Float Vertical NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9499
BrandRS PRO
MYR75.90
Each
units
Float Vertical NO/NC Nylon - - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9491
BrandRS PRO
MYR595.58
Each
units
Float External NC High Density Polyethylene 5m - 0°C +55°C 250V 110V 10 A 10bar - 10 A
New
RS Stock No. 191-9505
BrandRS PRO
MYR205.31
Each
units
Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
Related Products
Dwyer Instruments FSW2 series free-floating cable level switch ...
Description:
Dwyer Instruments FSW2 series free-floating cable level switch is a mercury-free counter-weighted floating switch. Designed for the automation of pumps, filling and draining of tanks, wells, and reservoirs. The FSW2 body is free of any irregularities making it ideal for ...
General purpose buoyancy level switch provides the user ...
Description:
General purpose buoyancy level switch provides the user with a robust & reliable option for a clean water and chemical solution applications. Dry contact closure ensures that reliable switching is made interface via remote interface devices such as PLCs. Turbulence ...
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. Its operating temperature ranges between -22°F and ...