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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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!
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.
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