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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รายละเอียดสินค้า / Description ราคา / 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
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RS Stock No. 191-9506
Brand :RS PRO
THB1,629.00
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Float Internal - Polyphenylene Sulphide - - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9511
Brand :RS PRO
THB742.00
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Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - - 600 mA
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RS Stock No. 191-9516
Brand :RS PRO
THB7,552.00
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Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
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RS Stock No. 191-9507
Brand :RS PRO
THB1,675.00
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Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9512
Brand :RS PRO
THB4,623.00
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Float External, Horizontal NO/NC 304 Stainless Steel (Stem), 316 Stainless Steel (Float) - - - +120°C 300V 300V 500 mA 5bar - 500 mA
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RS Stock No. 191-9499
Brand :RS PRO
THB619.00
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Float Vertical NO/NC Nylon - - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9469
Brand :RS PRO
THB751.00
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Float Horizontal NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9508
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THB1,868.00
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Float Internal - Polyphenylene Sulphide 1m - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9478
Brand :RS PRO
THB768.00
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Float Threaded NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9500
Brand :RS PRO
THB660.00
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Float Vertical NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9502
Brand :RS PRO
THB748.00
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Float Vertical NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9487
Brand :RS PRO
THB657.00
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Float External NO/NC Polypropylene - - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9467
Brand :RS PRO
THB808.00
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Float External, Vertical NO/NC Polyphenylene Sulphide 1m - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9518
Brand :RS PRO
THB7,136.00
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Float Internal NO/NC Stainless Steel 1m - - +135°C 250V 120V 600 mA 10bar - 600 mA
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RS Stock No. 191-9503
Brand :RS PRO
THB705.00
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Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9486
Brand :RS PRO
THB622.00
Each
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Float External NO/NC Nylon - - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9474
Brand :RS PRO
THB739.00
Each
Units
Float Horizontal NO/NC Polyphenylene Sulphide - - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9476
Brand :RS PRO
THB642.00
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Float Threaded NO/NC Nylon 1m - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
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RS Stock No. 191-9492
Brand :RS PRO
THB1,259.00
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Units
Float External NO HDPE 5m - 0°C +45°C 250V 24V 10 A 10bar - 10 A
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RS Stock No. 191-9489
Brand :RS PRO
THB1,308.00
Each
Units
Float Vertical NO/NC Buna (Float), Nylon (Stem) 1m - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
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