A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to
control other devices.
A common type is a float that raises a rod to actuate a microswitch. One pattern uses a reed switch mounted in a tube; a float, containing a magnet, surrounds the tube and is guided by it. When the float raises the magnet to the reed switch, it closes. Several reeds can be mounted in the tube for different level indications by one assembly.
liquid level sensors and switches provide high
reliability monitoring and detection of a wide range of fluid media and applications anywhere from medical reagent level monitoring, to sensing of liquids in food and beverage applications, to hydraulic fluids, to diesel fuel tanks (gas level indicator), to water and wastewater, deionized or potable water, and hundreds more.
What can we do?
We offers a wide variety of standard, vertical, and horizontal liquid level float switches. Standard float switches are available in stainless steel, and plastics, including PVC, polypropylene, or PVDF. Liquid level float switches are used to maintain a safe level of fluid within a tank or container. They can assist even more efficiently by automating the dispensing of liquids, whether into or out of the tank to maintain the optimal level, and can be connected to an alarm to sound when the optimal level is not met. With the ability to customize the length, they can even be used to control the filling of all types and sizes of vessels from small to large tanks.
These versatile liquid level float switches are typically hard mounted into the tank wall or extend further into the tank using extension tubes and liquid tight tube fittings.
How does it works?
Most of our vertical liquid level indicators can be changed from normally open to normally closed by simply removing the retainer and flipping the float. When the level switch is in the normally open mode, it is OFF until the float is lifted by the liquid and makes contact with the elastic ring, turning the switch to the ON position. When the switch is on, which allows for the tank to be automatically start emptying the tank until the switch turns back off, which then would tell the system to start filling the tank. This ensures that the tank level never gets too low. The applications for this simple switch are endless.
Vertical
Vertical float level sensors can be mounted in the top or the bottom of the tank. This gives the ability to have two points of contact, creating a system of emptying and filling the tank as efficiently as possible with minimal down time. The vertical float level switches have various mounting threads and can be made from stainless steel, and plastics for your budget and needs.
Horizontal
Horizontal float type level switches mount on the side of the tank. This lets you have the ability to set the exact level you would like regardless of the size or shape of the tank. With various mounting threads and materials available, we can design the perfect solution for your problem.
| Specifications: |
|
| Material |
plastic: PP, PVDF, NBR,stainless steel |
| Length range |
PP:30-400mm; stainless steel: 45-1000mm |
| Assembly position |
top-mounted or side mounted,bottom mounted |
| Assembly method |
by flange, by thread, by lock nut |
| Length of cable |
customized |
| Switch contact state |
normal open or normal close |
| Type of medium |
Edible water, oil, diesel oil, high temperature liquid, corrosive liquid |
| Environment |
indoor or outdoor;stationary or vibration environment |
| Working voltage |
DC voltage. Cannot be connected to the load |
| Material and applications: |
|
| PP |
Applicable for edible water and oil, liquid, household appliances and other products. Working temperature:-10-+85ºC. |
| PP+NBR float |
Applicable for diesel, oil and viscous oil and other industrial oil.
Working temperature:-10-+85ºC. |
| PVDF |
Acid and alkali corrosion resistance
Applicable for the temperature up to 100ºC. |
| stainless steel 304 |
Applicable for high temperature oil and water up to 160ºC, |
| SUS304+PP float |
Food grade, suitable for water medium products with specific rod length. |
| SUS304 main body+NBR float |
Withstand high temperature, low specific gravity, suitable for specific rod length of oil medium products |
| SUS304+explosion-proof junction box |
Applicable for large pools, tanks, pressure tank. temperature up to 160ºC.
Multi-point level control. rod up to 4 meters long |
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