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 780-0387
製造零件編號CW1
BrandCynergy3
TWD118.00
單位
Weight - - Polypropylene - - -20°C - - - - 100bar - -
RS庫存編號 780-0305
製造零件編號OLS500D3L
BrandCynergy3
TWD1,419.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -
RS庫存編號 869-7703
製造零件編號ILSE-G0250-D
BrandCynergy3
TWD7,309.00
單位
Pressure Chassis Mount 0.5-4.5V Stainless Steel - - - - - 32V - 20bar - -
RS庫存編號 780-0330
製造零件編號OLS210D3L24-003
BrandCynergy3
TWD2,803.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -40°C +125°C - - 1 A 7bar - -
RS庫存編號 869-7659
製造零件編號ILLS-G0750-5-010
BrandCynergy3
TWD11,973.00
單位
Pressure Cable 4-20mA Stainless Steel 10m - -20°C +60°C - 32V 28 mA 50bar - -
RS庫存編號 780-0309
製造零件編號OLS200D3SH
BrandCynergy3
TWD1,457.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 7bar - -
RS庫存編號 869-7630
製造零件編號ILS-G0500-007
BrandCynergy3
TWD17,032.00
單位
Pressure Cable 4-20mA Stainless Steel 7m - -20°C +60°C - 32V 28 mA 50bar - -
RS庫存編號 869-7693
製造零件編號ILSE-G0100-D
BrandCynergy3
TWD7,309.00
單位
Pressure Chassis Mount 0.5-4.5V Stainless Steel - - - - - 32V - 20bar - -
RS庫存編號 756-4289
製造零件編號RSF88H100R
BrandCynergy3
TWD699.00
單位
Sensor Horizontal External NO/NC Polypropylene 1m - -20°C +100°C - - 1 A - - -
RS庫存編號 869-7665
製造零件編號ILLS-G0250-D-005
BrandCynergy3
TWD9,816.00
單位
Pressure Cable 0.5-4.5V Stainless Steel 5m - -20°C +60°C - 32V - 20bar - -
RS庫存編號 869-7699
製造零件編號ILSE-G1000-5
BrandCynergy3
TWD7,309.00
單位
Pressure Chassis Mount 4-20mA Stainless Steel - - - - - 32V 28 mA 50bar - -
RS庫存編號 780-0327
製造零件編號OLS510D3L
BrandCynergy3
TWD3,556.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -40°C +125°C - - 1 A 20bar - -
RS庫存編號 780-0302
製造零件編號OLS500D3
BrandCynergy3
TWD1,334.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -
RS庫存編號 869-7716
製造零件編號ILTS-G0500-007
BrandCynergy3
TWD23,502.00
單位
Pressure Cable - Stainless Steel 7m - -20°C +60°C - 32V 28 mA 50bar - -
RS庫存編號 869-7652
製造零件編號ILLS-G0250-5-005
BrandCynergy3
TWD9,816.00
單位
Pressure Cable 4-20mA Stainless Steel 5m - -20°C +60°C - 32V 28 mA 20bar - -
RS庫存編號 756-4255
製造零件編號RSF48H100RF
BrandCynergy3
TWD754.00
單位
Reed Horizontal Internal NO/NC Polypropylene 1m - -20°C +100°C - - 1 A - Nitrile -
RS庫存編號 869-7696
製造零件編號ILSE-G0700-5
BrandCynergy3
TWD7,309.00
單位
Pressure Chassis Mount 4-20mA Stainless Steel - - - - - 32V 28 mA 50bar - -
RS庫存編號 869-7655
製造零件編號ILLS-G0500-5-007
BrandCynergy3
TWD10,679.00
單位
Pressure Cable 4-20mA Stainless Steel 7m - -20°C +60°C - 32V 28 mA 10bar - -
RS庫存編號 780-0179
製造零件編號SSF22X100-M12X1
BrandCynergy3
TWD2,853.00
單位
Level Switch Vertical - Stainless Steel 1m - -20°C +120°C - - 500 mA 10bar - -
RS庫存編號 780-0175
製造零件編號SSF22X100-18N
BrandCynergy3
TWD2,853.00
單位
Level Switch Vertical - Stainless Steel 1m - -20°C +120°C - - 500 mA 10bar - -