What Is a Float Switch?

Float switch is a liquid level control device with simple structure and easy to use. It does not need to provide power and has no complicated circuits. It has the advantages of smaller volume and longer working life than general mechanical switches. As long as the material is selected correctly, any type of liquid or pressure and temperature can be used. It is obtained in shipbuilding industry, generator equipment, petrochemical industry, food industry, water treatment equipment, dyeing and finishing industry, hydraulic machinery, etc. For a wide range of applications.

Float switch

Float switch is a liquid level control device with simple structure and easy to use. It does not need to provide power and has no complicated circuits. It has the advantages of smaller volume and longer working life than general mechanical switches. As long as the material is selected correctly, any kind of liquid or pressure and temperature can be used. It is used in shipbuilding industry, generator equipment, petrochemical,

Technical advantages of the float switch: The float switch does not contain components that cause failures, bellows, springs, seals, etc. Instead, the internal magnet of the switch is driven by a straight float, and the simple lever of the float switch makes the switch act instantly. The float cantilever angle limit design prevents the float from vertical.

The float switch is adapted to control the operation of the pump to maintain the liquid level; control the automatic loading and unloading of the tank; control the liquid level or supply signals, such as oil tanks, automatic cleaning systems, hydraulic tanks, low-pressure boilers, and sewage treatment systems.

Small floating ball level switch is specially used for liquid level detection, remote transmission of on-site indication signals and liquid level alarms in various small and medium pressure and pressure storage tanks, which can be applied to various sanitary, toxic, corrosive media and explosive Gas hazardous locations. There are many types of installation, suitable for various forms of containers.

Plastic full PP material is non-toxic, food-grade, suitable for water-based food, appliances and other products

PP + NBR float can withstand high temperature and low specific gravity, suitable for oil medium

PVDF temperature resistance 120 degrees, acid and alkali corrosion resistance, compact and durable structure

Teflon products have a long life, good reliability, stronger pressure resistance, and a wide range of applications. It is used in most oils and has good stability in water.

Stainless steel all stainless steel has a long service life and high temperature resistance. It is used in water and oil and weak acid and alkali environments.

All stainless steel (high temperature resistance), temperature resistance up to 200 degrees, suitable for oil high temperature environment

Stainless steel + PP floating ball is non-toxic, food grade, suitable for water medium products with specific rod length

Stainless steel + NBR float can withstand higher temperature and lower specific gravity, suitable for oil medium products with specific rod length

Selection instructions: Please use the floats of various specifications listed in the above table according to the characteristics of the test object, such as the temperature, pressure, specific gravity, and acid and alkali resistance.

1. Temperature: The highest temperature of PVDF is 120 , the highest of PP is 80 , and the highest of SUS304 / 316 is 200 .

2. Pressure: The maximum pressure resistance of plastic floating ball is 5kg / cm2, and the maximum pressure resistance of SUS floating ball is 30kg / cm2.

3. Adhesion: Floating balls with large balls and small specific gravity should be used to overcome the surface tension of the liquid.

4. Chemical properties: The plastic material is suitable for acid and alkali places. If temperature is considered, PVDF should be used.

5. Oil essence: metal material should be used.

6. Specific gravity: The specific gravity SG of the floating ball must be less than the measured liquid, otherwise the floating ball cannot float.

7. Voltage: 220VAC / 200VDC, Current: 0.7A

Principle of action:

use:

It is specially used for liquid level detection, remote transmission of on-site indication signals and liquid level alarms in various small and medium pressure and pressure storage tanks. It can be applied to various sanitary, toxic, corrosive media and explosive gas dangerous places. There are many types of installation, suitable for various forms of containers.

Features:

Multi-point control can be made, and the position of the control switch can be customized according to user needs.

No power supply is required to use the reed switch, and the contact life can reach 2 million times.

All the switch outlets are in the same junction box, and the external construction wiring cost is low.

Compared with multiple switch control points and other types of liquid level switches, the RF unit has the lowest unit price.

The protection level of the junction box is above IP-65.

There are PVDF, PP, PVC plastic materials and SUS304, SUS316 metal materials, so regardless of acid and alkali liquids, solvents or various fuels, there are suitable products for use.

The reed switch is completely isolated from the wires and liquid, so it can be used safely on high temperature and high voltage equipment.