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 468-3441
製造零件編號SN62XXAGHKMA
BrandVega
TWD52,319.00
單位
Ultrasonic - - Plastic - - -40°C +80°C - - 20 mA 2bar - -
RS庫存編號 869-7725
製造零件編號ILTS-G1000-015
BrandCynergy3
TWD23,780.00
單位
Pressure Cable - Stainless Steel 15m - -20°C +60°C - 32V 28 mA 50bar - -
RS庫存編號 776-1604
製造零件編號072.11
BrandFinder
TWD690.00
單位
Sensor Surface Mount Relay Stainless Steel 200m - 0°C +100°C - - 30 A - - -
全新
RS庫存編號 210-7470
製造零件編號7MF1572-1DA10
BrandSiemens
TWD20,119.00
單位
Hydrostatic Level Transmitter Cable 2 Wire Stainless Steel - - - - - - - - - -
RS庫存編號 869-7671
製造零件編號ILLS-G1000-D-015
BrandCynergy3
TWD13,457.00
單位
Pressure Cable 0.5-4.5V Stainless Steel 15m - -20°C +60°C - 32V - 50bar - -
RS庫存編號 193-6743
製造零件編號LLC500D3
TWD1,131.00
單位
Liquid Level Switch Threaded Mount Transistor Polysulfone - - -25°C +80°C - 15.4V 2.5 mA 20bar - 2.5 mA
RS庫存編號 193-6776
製造零件編號LLG710D324-003
TWD4,297.00
單位
Liquid Level Switch Threaded Mount NPN Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 100bar - 7.5 mA
全新
RS庫存編號 210-3155
製造零件編號226543
TWD2,138.00
單位
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 - - - - - - - - -
RS庫存編號 188-5255
製造零件編號CD34CNFLFPOT5
TWD4,054.00
單位
Conductive Plug PNP Plastic 300mm - -25°C +80°C - 30V ≤13 mA - - ≤100 mA
RS庫存編號 193-6784
製造零件編號LLG710D324-004-D
TWD7,420.00
單位
Liquid Level Switch Threaded Mount PNP Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 100bar - 7.5 mA
RS庫存編號 869-7661
製造零件編號ILLS-G0100-D-003
BrandCynergy3
TWD8,527.00
單位
Pressure Cable 0.5-4.5V Stainless Steel 3m - -20°C +60°C - 32V - 20bar - -
RS庫存編號 869-7652
製造零件編號ILLS-G0250-5-005
BrandCynergy3
TWD9,349.00
單位
Pressure Cable 4-20mA Stainless Steel 5m - -20°C +60°C - 32V 28 mA 20bar - -
RS庫存編號 768-2003
製造零件編號WAVES61.EXX2RC
BrandVega
TWD17,701.00
單位
Vibrating Level Switch Cable Relay - - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - -
全新
RS庫存編號 210-0692
製造零件編號LFFS-024.0
BrandBaumer
TWD18,301.00
單位
Level Switch Threaded PNP Stainless Steel - - - - - - - - - -
RS庫存編號 869-7677
製造零件編號ILLS-G0750-D-010
BrandCynergy3
TWD11,403.00
單位
Pressure Cable 0.5-4.5V Stainless Steel 10m - -20°C +60°C - 32V - 50bar - -
RS庫存編號 889-1346
製造零件編號DL10-11
BrandFlowline
TWD12,791.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 768-1971
製造零件編號SONS62.EXXX
BrandVega
TWD30,294.00
單位
Vibrating Rod Chassis Mount - ABS - - -40°C +80°C - - 20 mA - - -
RS庫存編號 124-0110
製造零件編號DL10-01
BrandFlowline
TWD13,126.00
單位
Ultrasonic Level Transmitter Vertical - ABS, PC 1.2m - -35°C +60°C - 24V 20 mA 2bar FKM -
RS庫存編號 187-1812
製造零件編號LBFS-01421.0
BrandBaumer
TWD7,070.00
單位
Level Switch Bottom Mount, Side Mount, Top Mount PNP Stainless Steel - - -40°C +85°C - 30V 20 mA 10bar - 20 mA
RS庫存編號 804-4121
製造零件編號7ML1100-1BA30
BrandSiemens
TWD38,993.00
單位
Vibrating Rod - - - - - -40 °C, -20°C +60 °C, +73°C - - - - - -