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.

...
顯示內容 隱藏內容

篩選條件

正在檢視 461 - 467,共 467 項產品
Results per page
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 794-3412
製造零件編號211002R2NA
BrandRosemount
TWD10,300.00
單位
Fork Level Switch Side or Top Mount Direct Load Stainless Steel - - -40°C +150°C - - 500 mA 100bar - -
RS庫存編號 124-0123
製造零件編號LU27-01
BrandFlowline
TWD17,089.00
單位
Ultrasonic Level Transmitter Vertical - PC 3m - -35°C +60°C - 24V 20 mA 2bar FKM -
RS庫存編號 780-0305
製造零件編號OLS500D3L
BrandCynergy3
TWD1,379.00
單位
Optical Sensor Chassis Mount Transistor Polysulfone 250mm - -25°C +80°C - - 100 mA 20bar - -
RS庫存編號 193-6788
製造零件編號LLG810D3L24-004-D
TWD7,961.00
單位
Liquid Level Switch Threaded Mount PNP Stainless Steel 316L - - -40°C +125°C - 30V 7.5 mA 600bar - 7.5 mA
RS庫存編號 488-037
製造零件編號LR7000
TWD12,838.00
單位
- - PNP Stainless Steel/FKM/NBR/PB/PC/PEI/TPE/PTFE - - 0°C +60°C - - 200 mA 4bar - -
RS庫存編號 794-3430
製造零件編號2120D1AT1E1XA0000
BrandRosemount
TWD18,727.00
單位
Fork Level Switch Side or Top Mount Direct Load Aluminium - - -40°C +150°C - - 500 mA 100bar Non Asbestos Sheet -
RS庫存編號 193-6805
製造零件編號LLC200D3LSH
TWD1,131.00
單位
Liquid Level Switch Threaded Mount Transistor Polysulfone - - -25°C +80°C - 15.4V 2.5 mA 7bar - 2.5 mA