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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Rincian Komponen Brand Stock Device Type Mounting Type Switch Output Body Material Cable Length Minimum Operating Temperature Maximum Operating Temperature Maximum ac Voltage Maximum dc Voltage Maximum Current Maximum Pressure Gasket Material Series Standards Met Current Rating Interface Hazardous Area Certification
Baumer LBFS Series Level Sensor PNP Output Baumer 0 Level Switch Bottom Mount, Side Mount, Top Mount PNP Stainless Steel 5m -40°C +85°C - 30V 20 mA 100bar - LBFS - 20 mA - -
Baumer LBFS Series Level Sensor PNP Output Baumer 0 Level Switch Bottom Mount, Side Mount, Top Mount PNP Stainless Steel 5m -40°C +85°C - 30V 20 mA 100bar - LBFS - 20 mA - -
Carlo Gavazzi Plug Mounting Level Sensor PNP Output Carlo Gavazzi 0 Conductive Plug PNP Plastic 300mm -25°C +80°C - 30V <lteq/>13 mA - - - CE Certified, cULus Listed <lteq/>100 mA - -
Carlo Gavazzi VN Series Cable Mounting Level Sensor Carlo Gavazzi 0 Conductive Cable - Nylon 6 2m 0°C +90°C - - - 10bar - VN - - - -
Telemecanique Sensors 9038 Series Float Switch Telemecanique Sensors 40 Mechanical Alternator Pedestal Mount - Painted Cold-Rolled Steel - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - 9038 - - - -
Telemecanique Sensors 9038 Series Screw In Mounting Float Switch Telemecanique Sensors 23 Mechanical Alternator Screw In - Painted Cold-Rolled Steel - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - 9038 - - - -
Liquid Level Relay 3 probe set
  • S$ 7,487
  • Each (In a Pack of 3)
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Unipower 6 Electrode - - Stainless Steel - -10°C +65°C - - - - - - - - - -
Sick GRF Series Threaded Mounting Level Sensors
  • No. Stok RS 183-7322
  • Merek Sick
  • Pbrk. No. Komp. GRF18S-P234LV
Sick 5 Level Sensor Threaded - Stainless Steel - -25°C +55°C - 30V - 16bar - GRF CE Certified, UL Listed <lteq/>30 mA - -
Telemecanique Sensors 9038 Series Screw In Mounting Float Switch Telemecanique Sensors 5 Mechanical Alternator Screw In - Painted Cold-Rolled Steel - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - 9038 - - - -
Sick GRF Series Threaded Mounting Level Sensors
  • No. Stok RS 183-7323
  • Merek Sick
  • Pbrk. No. Komp. GRF18S-F234LV
Sick 4 Level Sensor Threaded - Stainless Steel - -25°C +55°C - 30V - 16bar - GRF CE Certified, UL Listed <lteq/>30 mA - -
Sick GRF Series Threaded Mounting Level Sensors
  • No. Stok RS 183-7324
  • Merek Sick
  • Pbrk. No. Komp. GRF18S-N234LV
Sick 3 Level Sensor Threaded - Stainless Steel - -25°C +55°C - 30V - 16bar - GRF CE Certified, UL Listed <lteq/>30 mA - -
Sick GRF Series Threaded Mounting Level Sensors
  • No. Stok RS 183-7325
  • Merek Sick
  • Pbrk. No. Komp. GRF18S-E234LV
Sick 1 Level Sensor Threaded - Stainless Steel - -25°C +55°C - 30V - 16bar - GRF CE Certified, UL Listed <lteq/>30 mA - -
Vega VEGAPULS 64 Series 1.5 BSP/G Thread Mounting Level Sensor 2 Wire, 4 to 20 mA Output
  • No. Stok RS 182-5618
  • Merek Vega
  • Pbrk. No. Komp. PS64.ACTTCAHXKMXXX
Vega 1 Level Sensor 1.5 BSP/G Thread 2 Wire, 4 to 20 mA PTB VALOX - -40°C +130°C - 35V 22 mA 20bar - VEGAPULS 64 - 4 → 20 mA - -
Vega VEGAPULS 64 Series 1.5 BSP/G Thread Mounting Level Sensor 2 Wire, 4 to 20 mA Output ATEX
  • No. Stok RS 182-5611
  • Merek Vega
  • Pbrk. No. Komp. PS64.AXTTCAHXKMXXX
Vega 1 Level Sensor 1.5 BSP/G Thread 2 Wire, 4 to 20 mA PTB VALOX - -40°C +130°C - 35V 22 mA 20bar - VEGAPULS 64 - 4 → 20 mA - ATEX
Vega VEGAPULS 64 Series Slip on Flange or Bracket Mounting Level Sensor 2 Wire, 4 to 20 mA Output
  • No. Stok RS 182-5617
  • Merek Vega
  • Pbrk. No. Komp. PS64.ACBXXCHXKMXXX
Vega 1 Level Sensor Slip on Flange or Bracket 2 Wire, 4 to 20 mA PTB VALOX - -40°C +80°C - 35V 22 mA 2bar - VEGAPULS 64 - 4 → 20 mA - -
Vega VEGAPULS 64 Series Slip on Flange or Bracket Mounting Level Sensor 2 Wire, 4 to 20 mA Output ATEX
  • No. Stok RS 182-5610
  • Merek Vega
  • Pbrk. No. Komp. PS64.AXBXXCHXKMXXX
Vega 1 Level Sensor Slip on Flange or Bracket 2 Wire, 4 to 20 mA PTB VALOX - -40°C +80°C - 35V 22 mA 2bar - VEGAPULS 64 - 4 → 20 mA - ATEX
Vega VEGAPULS 69 Series 1.5 BSP/G Thread Mounting Level Sensor 2 Wire, 4 to 20 mA Output
  • No. Stok RS 182-5620
  • Merek Vega
  • Pbrk. No. Komp. PS69.ARUTCAHXA2XXX
Vega 1 Level Sensor 1.5 BSP/G Thread 2 Wire, 4 to 20 mA Coated Aluminium - -40°C +130°C 253V 35V 22 mA 20bar - VEGAPULS 69 - 4 → 20 mA - -
Vega VEGAPULS 69 Series 1.5 BSP/G Thread Mounting Level Sensor 2 Wire, 4 to 20 mA Output ATEX
  • No. Stok RS 182-5613
  • Merek Vega
  • Pbrk. No. Komp. PS69.AXTTCAHXKMXXX
Vega 1 Level Sensor 1.5 BSP/G Thread 2 Wire, 4 to 20 mA PTB VALOX - -40°C +130°C 253V 35V 22 mA 20bar - VEGAPULS 69 - 4 → 20 mA - ATEX
Vega VEGAPULS 69 Series Slip on Flange or Bracket Mounting Level Sensor 2 Wire, 4 to 20 mA Output
  • No. Stok RS 182-5619
  • Merek Vega
  • Pbrk. No. Komp. PS69.ARBXXCHXA2XXX
Vega 1 Level Sensor Slip on Flange or Bracket 2 Wire, 4 to 20 mA Coated Aluminium - -40°C +80°C 253V 35V 22 mA 2bar - VEGAPULS 69 - 4 → 20 mA - -
Vega VEGAPULS 69 Series Slip on Flange or Bracket Mounting Level Sensor 2 Wire, 4 to 20 mA Output ATEX
  • No. Stok RS 182-5612
  • Merek Vega
  • Pbrk. No. Komp. PS69.AXBXXCHXKMXXX
Vega 1 Level Sensor Slip on Flange or Bracket 2 Wire, 4 to 20 mA PTB VALOX - -40°C +80°C 253V 35V 22 mA 2bar - VEGAPULS 69 - 4 → 20 mA - ATEX
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