Liquid Level Sensors

Picture	Manufacturer No.	Description	Datasheet	Order
	FBLLS-001	Portable indoor household air quality CO2 temperature and humidity alarm detector		Send Order
	FBLLS-002	Hand-held liquid level sensor		Send Order
	FBLLS-004	Non-contact liquid level sensor		Send Order
	FBLLS-005	Small pipe water level sensor switch		Send Order
	FBLLS-006	Chip type contactless liquid level sensor		Send Order
	FBLLS-007	Output pipe patch water level induction switch liquid detection		Send Order
	FBLLS-008	Water-level sensor switch		Send Order
	FBLLS-009	level sensing device		Send Order
	FBLLS-010	Float Level Senors		Send Order
	FBLLS-011	Water leakage detection line WIFI Water leakage alarm accessory NB water sensor accessory Water leakage alarm		Send Order
	FBLLS-012	Overflow alarm detector Full water leakage alarm rain alarm liquid level alarm		Send Order
	FBLLS-013	Liquid level sensor Water dispenser water level gauge Replaceable float type liquid level sensor		Send Order
	FBLLS-014	Non-contact liquid level sensor Capacitive liquid level sensor Water level sensor probe		Send Order
	FBLLS-015	Miniature photoelectric liquid level switch Small volume water level detection switch M8 photoelectric liquid level sensor switch		Send Order
	FBLLS-016	Contact liquid level sensor Liquid level sensor		Send Order
	FBLLS-017	Non-contact photoelectric liquid level sensor Water level sensor High and low liquid level switch induction water shortage detection		Send Order
	FBLLS-018	Capacitance liquid level switch Stainless steel probe probe Fully automatic water level controller Liquid level switch		Send Order
	FBLLS-019	Water level sensor switch, water tank sensor probe, liquid level sensor		Send Order
	FBLLS-020	Liquid level control module liquid level sensor water level control sensor module		Send Order
	FBLLS-021	Water dispenser water purifier humidifier liquid level control module sensor module		Send Order

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  Liquid-Level Sensors that Provide Accurate Analysis of Tank Contents

  What are the liquid level sensors that can be detected without touching liquids?
  In practical applications, some applications require liquid level sensors to achieve liquid level detection without touching the liquid. For example, in the water level detection of the coffee machine's water tank, non-contact liquid level sensors are usually used for better hygiene, which can meet the needs of removing the water tank and facilitating regular cleaning. The separated photoelectric liquid level sensor is based on the photoelectric principle, characterized by high reliability, high precision, no mechanical operation, long service life, diverse detectable liquids, and no contact with liquids, making it more hygienic.
  To use a separated photoelectric liquid level sensor, a prism needs to be designed in the water tank to achieve detection.
  
  For example, when used on a coffee machine, it can not only detect the water level in the water tank, but also check whether the water tank is in place. Compared to float switches, it has higher reliability and does not experience jamming or accumulation of dirt.

  Capacitive liquid level sensor
  The second type of non-contact detection is the capacitive liquid level sensor. External installation does not require opening, non-contact detection, but there are requirements for the thickness and material of the water tank. The water tank must be made of non-metallic material.
  For example, when used on a water dispenser, detecting a low liquid level can place the sensor tightly against the bottom of the water tank for detection, without contaminating the liquid, making it more hygienic and safe.
  Multi point capacitive liquid level detection can also be designed according to practical applications to detect multiple liquid levels.

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  Why Choose FBelec?

  * Short lead times
  * Fast delivery
  * Product quality reliability
  * 25 years' manufacturing experience
  * Design engineers available for technical and product support
  * Datasheets, 2D drawings, 3D models and samples available
  * Every sensor is tested and inspected prior to shipment
  * Supply chain confidence
  * Product customization and branding
  * New developments driven by technology innovation and industry trends
  

  Liquid Level Sensors
  How We Build Our Sensors
  When building our liquid level sensors, we combine liquid level and temperature sensing (options include temperature switch, thermocouple, RTD, thermistor and more) which can result in a much more efficient, reliable sensing package.
  Typically, liquid level and temperature products lead to a reduction in installation costs, space savings, SKU reduction, product cost savings and more.
  

• Interested in a custom made product?
  FBelec Sensors can manufacture almost any type of sensor.
  Please contact us via our website or give us a call today for customization requests!

  Request Our Latest Price

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  Selection and installation method of liquid level sensor

  The selection and installation methods of liquid level sensors involve multiple steps and considerations to ensure their accuracy and reliability.
  
  Selection of liquid level sensors
  Medium characteristics: Considering factors such as density, viscosity, temperature, pressure, corrosiveness, and flammability of the medium, select the appropriate type of liquid level sensor.
  Working conditions: Consider the pressure, temperature, liquid level range, and installation method of the liquid container, such as opening position, diameter, standard, material, etc. Selection of Supporting instruments: Select instruments with digital display, arbitrary setting of liquid level points, relay switch output, output direction definition, computer communication, and differential protection functions to improve usability and system safety.
  
  Installation method of liquid level sensor
  Choose installation point: Usually, installation is carried out on the upper part of the liquid container to avoid obstacles and adjust the installation position to ensure measurement accuracy.
  Fixed sensor: Use screws, nuts, and other tools to fix the liquid level sensor in the selected position and ensure good sealing.
  Connecting cable: Connect the cable to the interface of the liquid level sensor, paying attention to sealing to prevent liquid leakage or external substances from entering.
  Power connection: Connect the liquid level sensor to the DC power supply, ensuring proper connection to avoid malfunctions or damage.
  Output signal connection: Select analog output (such as voltage or current signal) or digital output (such as switch signal) as needed, and connect it to the corresponding device or system.
  Calibration and Setting: Calibrate and set according to actual needs, including parameters such as calibration range, sensitivity, and zero point, to ensure accuracy and stability.
  Following the above steps and precautions can ensure the correct selection and installation of liquid level sensors, thereby improving their measurement accuracy and service life. At the same time, regular inspection and maintenance are also key to maintaining the performance of the liquid level sensor.

  Choose between contact liquid level switch and non-contact liquid level sensor
  Technological progress has indeed changed people's lives, with various technologies emerging endlessly. But the question is, how to choose various dazzling contact level switches and non-contact level sensors?
  1. Before making a choice, it is necessary to first clarify the type of liquid being tested, whether its chemical properties are toxic, highly corrosive, acidic or alkaline solution, contamination, edible oil, water, etc. If the medium of the tested liquid is toxic, highly corrosive, acidic or alkaline solution, contaminated, edible oil, edible water or liquid is opaque, non-contact measurement is recommended. If the medium is unconventional, such as butter, gasoline, etc., contact measurement can be used.
  2. With the development of society and the advancement of science and technology, many outdated liquid level measurement sensors have been eliminated. The latest measurement technology, sensors that meet certain requirements for measurement speed and accuracy are highly sought after by people. In terms of non-contact measurement, capacitive non-contact liquid level sensors, ultrasonic liquid level sensors, payment liquid level sensors, photoelectric liquid level sensors, float level switches, etc.

• What is the working principle of non-contact liquid level sensors

  A non-contact liquid level sensor, also known as a separated liquid level sensor, is based on traditional optical sensors. The diamond mirror part is directly designed onto the user's water tank, and the mold is formed as a whole; The optical components are separated and placed outside the water tank for sensing. The sensor is independent of the outside of the water tank and can be separated by air, solving the problem of the water tank needing to be moved and filled with water. The product using this solution has precise water level sensing, and the water tank has no interference from external structural components, making it easier to clean and avoiding the growth of bacteria at the edges and corners of the sensor.
  
  The biggest difference between non-contact liquid level sensors and integrated liquid level sensors is that the prism part is involved in the user's water tank, the optical components are separated, and the external part of the water tank forms an induction. The output signal is an analog signal, with an output voltage of less than 0.3v in the presence of water and greater than 4v in the absence of water. The operating temperature is between -20 ° C and 80 ° C.

  The advantages of non-contact liquid level sensors

  1. High data accuracy: Due to the high-precision data processing technology adopted by the liquid level sensor, the data accuracy can reach 0.01mm, which can meet different precision detection requirements;
  
  2. Safe and reliable: The liquid level sensor adopts a non-contact measurement method, without the need for contact with pipelines, which can avoid the impact of unconventional gas-liquid mixing on the accuracy of liquid level measurement;
  
  3. Easy to operate: When using a liquid level sensor to detect the liquid level, it can be installed on the pipeline to achieve non-destructive installation without being affected by the external environment, with simple operation and maintenance;
  
  4. Long term high reliability: Due to the use of special materials, the liquid level sensor can effectively resist pipeline fluid corrosion, with high reliability and durability, and a longer lifespan.
  
  FBelec is a high-tech company that focuses on the research and development, production, and sales of various liquid level sensors, flow control sensors, photoelectric position sensors, photoelectric tilt sensors, and other products.

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• Looking to Purchase a Sensor?

  Before purchasing your liquid level switch, there are a few questions you should try to answer.

  
  

  What kind of fluid will be measured?

  Should the fluid level sensor be external or can we insert it into the application in question?

  Do you need the sensor to detect the level continuously or will a point sensor be adequate? (point sensing involves taking measurements at certain instances)

  Can the sensor come in contact with the process fluid?

  Is direct measurement of the level needed?

  
  

• Contact An Expert Today

• Liquid Level Sensors FAQs

  1) What is an optical level sensor?

  In many applications, people need to detect the presence or absence of liquid. SST’s liquid level switches use optical characteristics of liquids to determine if a liquid is there or not. A vast range of process connections, materials, housing styles, outputs and electrical connections are available to meet your needs .

  
  

  2) How accurate are PST liquid level sensors?

  Optical level switches provide precise monitoring of liquid levels, offering repeatable long life switching and control. The ability to detect from 1mm of liquid touching or leaving the sensor to trigger the switching output provides fast accurate control.

  
  

  3) How versatile are optical level switches?

  Optical sensors are versatile and can be used with a wide range of liquids, including clean and clear liquids, as well as those with suspended particles or bubbles. They are suitable for applications across various industries, from pharmaceuticals to food and beverage production.

  
  

  4) Can optical level switches be used in Explosive Atmospheres?

  Yes we offer a range of Intrinsically Safe level sensors for use with potentially hazardous liquids.

  
  

  5) How quick is the Optical Sensor Response Time?

  Optical sensors offer sub second response times, providing real-time data on liquid levels for quick decision-making and process control. This fast response is particularly beneficial in dynamic environments where liquid levels fluctuate frequently. Optional firmware variants allow for sloshing liquids and prevent false indications.

  
  

  6) What advantage do optical sensors offer in terms of maintenance compared to other sensor types?

  Optical sensors typically require minimal maintenance compared to other sensor types. With no moving parts to wear out or mechanical components to adjust, optical sensors offer reliable long-term operation with little to no maintenance required.