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 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庫存編號 869-7716
製造零件編號ILTS-G0500-007
BrandCynergy3
TWD22,383.00
單位
Pressure Cable - Stainless Steel 7m - -20°C +60°C - 32V 28 mA 50bar - -
RS庫存編號 907-3868
製造零件編號43760
TWD8,211.00
單位
Level Switch Vertical SPST NC Stainless Steel 1.8m - -40°C +60°C - - - - - -
全新
RS庫存編號 208-5501
製造零件編號SOLIBAMS
BrandATMI
TWD4,619.00
單位
Level Detector Panel Mount SPST NO/NC ABS - - - - - - - - - -
RS庫存編號 193-6744
製造零件編號LLC510D3
TWD1,312.00
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Liquid Level Switch Threaded Mount Transistor Polysulfone - - -40°C +125°C - 15.4V 2.5 mA 20bar - 2.5 mA
RS庫存編號 804-3850
製造零件編號7ML5501-0EA70
BrandSiemens
TWD22,751.00
單位
Capacitance Switch Vertical Relay Stainless Steel - - -30°C +100°C - - - 10bar - -
RS庫存編號 768-1974
製造零件編號SONS62.EXXA
BrandVega
TWD35,419.00
單位
Vibrating Rod Chassis Mount - ABS - - -40°C +80°C - - 20 mA - - -
RS庫存編號 768-2028
製造零件編號VIBS61.EXX2RA
BrandVega
TWD17,567.00
單位
Sensor Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
RS庫存編號 889-1208
製造零件編號LU27-40
BrandFlowline
TWD23,481.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
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製造零件編號LLG710D3L24-003
TWD4,297.00
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Liquid Level Switch Threaded Mount NPN Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 100bar - 7.5 mA
RS庫存編號 493-6852
製造零件編號PS61.XXAGPHKMXX
BrandVega
TWD69,599.00
單位
Radar Vertical - Plastic - - -40°C +80°C - - 20 mA 2bar - -
RS庫存編號 901-0292
製造零件編號FX82.IXXTBFHXKMXX
BrandVega
TWD56,950.00
單位
TDR Sensor Cable HART Stainless Steel 75m - -40°C +80°C 253V 48V 20 mA 40bar EPDM Rubber, FFKM, FKM 4 → 20 mA
RS庫存編號 124-0111
製造零件編號DL14-01
BrandFlowline
TWD14,584.00
單位
Ultrasonic Level Transmitter Vertical - ABS, PC 1.2m - -35°C +60°C - 24V 20 mA 2bar FKM 1 A
RS庫存編號 187-1813
製造零件編號LBFS-03421.0
BrandBaumer
TWD7,195.00
單位
Level Switch Bottom Mount, Side Mount, Top Mount PNP Stainless Steel - - -40°C +85°C - 30V 20 mA 100bar - 20 mA
RS庫存編號 193-6795
製造零件編號LLG810D324-003-D
TWD7,914.00
單位
Liquid Level Switch Threaded Mount NPN Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 600bar - 7.5 mA
全新
RS庫存編號 213-3291
製造零件編號LFV200-XXSGBTPV
BrandSick
TWD8,391.00
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Vibrating Level Switch G3/4 Thread, Vertical/Horizontal PNP NO/NC PEI, Stainless Steel - - -40°C +100°C - 35V 250 mA 64bar - 250 mA
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RS庫存編號 210-3156
製造零件編號226544
TWD2,138.00
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Electro-Optic 1/2?- 20UNF-2B* Direct Load Housing = Polysulfone (Contact Gems for alternative material types)Prism = PolysulfoneO-Ring = Fluorocarbon (1/4? MNPT - None)Electronics = Over-molded TPE 119.8mm - - - - - - - - -
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RS庫存編號 210-7475
製造零件編號7ML5725-1ZC11-1AD0
BrandSiemens
TWD18,596.00
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Level Switch Side or Top Mount - Stainless Steel - - - - - - - - - -
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製造零件編號POS287412
TWD9,218.00
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Liquid Level Switch Threaded Mount NPN Stainless Steel 304 - - -25°C +140°C - 30V 25 mA 80bar - 25 mA
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TWD5,863.00
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Electro Optic Vertical/Horizontal NO Brass 6in - -40°C +110°C - 5V - 17bar - 4 mA
RS庫存編號 794-3399
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BrandSick
TWD42,000.00
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