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 124-0142
製造零件編號LO10-1305
BrandFlowline
TWD6,050.00
單位
Flowline Detection Switch Vertical NO/NC PP 3m - -40°C +80°C - 36V - 10bar FKM 25 mA
RS庫存編號 124-0126
製造零件編號LU80-5101
BrandFlowline
TWD22,684.00
單位
Ultrasonic Level Transmitter Vertical - PC - - -40°C +71°C - 28V 20 mA 2bar FKM -
RS庫存編號 889-1352
製造零件編號DL14-10
BrandFlowline
TWD15,881.00
單位
Multi Function Ultrasonic Transmitter Vertical Relay Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1191
製造零件編號LU23-41
BrandFlowline
TWD28,623.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1330
製造零件編號DL10-00
BrandFlowline
TWD13,591.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 124-0110
製造零件編號DL10-01
BrandFlowline
TWD13,150.00
單位
Ultrasonic Level Transmitter Vertical - ABS, PC 1.2m - -35°C +60°C - 24V 20 mA 2bar FKM -
RS庫存編號 889-1182
製造零件編號LU23-40
BrandFlowline
TWD26,859.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1201
製造零件編號LU27-41
BrandFlowline
TWD24,702.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 124-0137
製造零件編號LU10-1305
BrandFlowline
TWD12,279.00
單位
Ultrasonic Level Switch Vertical - PP 3m - -40°C +80°C - 36V - 10bar FKM 25 mA
RS庫存編號 137-2045
製造零件編號US03-0001-01
BrandFlowline
TWD29,021.00
單位
Reflective Ultrasonic Liquid Level Transmitter Horizontal, Vertical 2 Wire, 4 to 20 mA Polypropylene 1.2m - -40°C +80°C - 28V 20 mA 2bar - -
RS庫存編號 124-0113
製造零件編號DL34-01
BrandFlowline
TWD26,934.00
單位
Ultrasonic Level Sensor Vertical - PC 1.2m - -35°C +60°C - 24V 20 mA 2bar FKM 1 A
RS庫存編號 889-1365
製造零件編號DL24-00
BrandFlowline
TWD19,229.00
單位
Ultrasonic Level Transmitter Vertical 2 Wire Relay Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1236
製造零件編號LU29-41
BrandFlowline
TWD35,063.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 4.6m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1356
製造零件編號DL14-11
BrandFlowline
TWD17,475.00
單位
Multi Function Ultrasonic Transmitter Vertical Relay Polycarbonate 1.2m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1194
製造零件編號LU27-00
BrandFlowline
TWD20,977.00
單位
Ultrasonic Level Transmitter Vertical - Polycarbonate 3m - -35°C +60°C - 24V 20 mA 30psi Viton -
RS庫存編號 889-1416
製造零件編號GT10-1405
BrandFlowline
TWD8,377.00
單位
- - - - - - -40°C +60°C - - - - - 1 A
RS庫存編號 889-1166
製造零件編號LU10-1405
BrandFlowline
TWD11,456.00
單位
Ultrasonic Level Switch Cable - Polypropylene 3m - -40°C +80°C - 36V - 150psi Viton 500 mA
RS庫存編號 137-2044
製造零件編號US01-0001-01
BrandFlowline
TWD29,050.00
單位
Reflective Ultrasonic Liquid Level Transmitter Horizontal, Vertical 2 Wire, 4 to 20 mA Polypropylene 1.2m - -40°C +80°C - 28V 20 mA 2bar - -
RS庫存編號 124-0130
製造零件編號LU77-5004
BrandFlowline
TWD25,947.00
單位
Ultrasonic Level Switch Vertical - PC - - -40°C +71°C 250V - 20 mA 2bar FKM 2 A
RS庫存編號 124-0125
製造零件編號LU28-01
BrandFlowline
TWD25,437.00
單位
Ultrasonic Level Transmitter Vertical - PC 3m - -35°C +60°C - 24V 20 mA 2bar FKM -