Float for pump - connection diagram in 2 simple steps

Almost every pump is equipped with special devices that monitor correct operation and prevent malfunctions. One of the popular and effective means of control is a float switch. The main feature of the product is its functionality and practicality. It can work not as an actuator, but also as a water level sensor, and can be placed in any container. With such a product, the pump will always be protected from “dry running”, which will prevent rapid wear and tear. Additionally, if a person is filling a large tank, the switch is able to monitor the water level and prevent overflow. The equipment is sold in two versions: heavy and light. The first is recommended for installation in drainage or rainwater drains, and the second is suitable for standard work with clean water.

Photo: https://ksao.ru

Energy TSY-5

Photo: https://beru.ru

A high-quality option that is designed for automatic control of the water level in various containers. The model will also help to monitor the correct operation of the pumping device and turn it off if there is no liquid. The design is practically no different from the standard options. Maximum current – ​​16 A. Protection class – IP68. The approximate service life with proper use is 10 years.

Float switch TSY-5 cord 2 meters Energy

Advantages:

• convenience
• doesn't take up much space
• efficiency
• durability
• no dirt accumulates

Flaws:

• wire length 2 meters

Float level sensors (level alarms) PDU-T

PDU-T1xx, PDU-T3xx, PDU-T5xx:

A permanent magnet is built into the sensor float, and a permanent magnet is built into the sensor rod along which the float moves.

reed switch

When the float is immersed in the liquid, it begins to move along the rod, causing the reed switch to operate and the sensor thus signals that the liquid has reached the limit level. Depending on the design, PDU-T sensors are installed horizontally or vertically in the container (see Fig. 1).

Fig.1. Example of installation of float level sensors (level alarms) PDU-T1xx, PDU-T3xx, PDU-T5xx

PDU-T601-x:

The PDU-T601-x float sensors include: a float with a contact group (NO+NC) and a ball inside, a cable of a certain length, depending on the modification of the sensor, and a weight that is placed on the cable. The cable is connected to the float through a sealed input. The weight located on the cable is intended to set the switching point for the contact state (upper level setting).

The sensor is suspended by the wire so that the float is at the height of the desired lower level of liquid in the container. In this position, the ball located in the sensor body presses on the contacts, closing one contact and opening the other relative to the common wire. The weight located on the sensor cable is lowered to the height of the desired upper level. When the container is filled, the liquid lifts the float up and when the float crosses the level at which the load is located, the ball rolls and switches the contacts to the opposite state (see Fig. 2).

Fig.2. Example of installation of float level sensors (level alarms) PDU-T601-x

Selection table for float level sensors (level alarms) PDU-T:

Connection diagrams for float level sensors (level alarms) PDU-T:

IMPORTANT! The state of the contacts in the diagrams is shown for sensors that are not immersed in liquid; accordingly, when immersed in liquid, they will change their state to the opposite

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WWQ FS

​Photo: https://beru.ru

A universal device that can be installed for any purpose. The device has a durable plastic case and a long cable. The maximum load is 4 kW, while the rated current is 4 A. The tightness is at the highest level, so neither dust particles nor water will penetrate inside the product, which ensures high durability and trouble-free operation.

Float switch WWQ FS

Advantages:

• low cost
• durability
• robust housing
• easy installation

Flaws:

• not detected

KITLINE 11000

​Photo: https://beru.ru

An excellent model that monitors the liquid level and allows you to turn off the pumping equipment in a timely manner. The weight of the structure is 100 grams, while the cable length is 3 meters, which is suitable for small tanks. Made from durable plastic that can withstand small mechanical loads. The outer part is completely smooth, which eliminates the possibility of accumulation of solid elements. The weights are included and are installed in the standard way: using a special clamp. The dimensions of the device allow it to be placed in any container. The insulation is of high quality, no cracks were detected.

Float switch 3 m KITLINE 11000

Advantages:

• good strength
• excellent cable length
• smooth surface
• easy to clean
• excellent insulation

Flaws:

• not detected

What is important to know about installation?

Depending on the intended purpose, the installation method may vary. However, before installing the device, you should know that operation is not allowed only when the rated current value is several times higher than the maximum. The parameter is indicated on the box and in the technical notes. device passport. The easiest way to place the switch is to place it in a tank. To do this, you need to equip it with a special weight and make sure that the design is designed for such use.

The sinker must be fixed to the cable; often this element is included in the kit, so there is no need to look for available materials. After fixing, you should calculate the free play; it is recommended to do this in a practical way, so the readings will be more accurate. Once the user has completed the calculations, it is necessary to install the cable on the outside of the container. The last point is connection to pumping equipment.

There is another method that is often used in the household - using a supply cable. This option is easy and does not require any calculations; the only thing to remember is that there should be no other sensors or elements inside the tank that the equipment can get caught on.

In some cases it is necessary to install multiple float switches. Each device is fixed on a special rod made of plastic and installed inside the container. Floats must not only be installed, but also be properly adjusted and well placed on the structure. The accuracy of the work depends on this. The wires that come from the switch body are fixed using ordinary clamps. The number of sensors directly depends on the number of installed pumps.

WATTS IGD

​Photo: https://beru.ru

A high-quality product from a German manufacturer that can function for ten years without requiring complex maintenance. Supplied in a plastic case that is well sealed and does not allow water and dust to pass through. The maximum operating temperature is 60 degrees. Thanks to the high-quality material, the product can be used even when pumping gasoline, without the outer layer being destroyed.

Watts Level float switch IGD 5m (set)

Advantages:

• robust housing
• durability
• ease of use
• efficiency

Flaws:

• not detected

Marco AS2

​Photo: https://beru.ru

A good product made in Italy, which has a high service life and reliability. The main advantage of the device is the ability to control a small water level (from 20 to 50 mm). This is not found in every design, which makes the product unique. The body is smooth and has no irregularities, which allows it to be used in any system. The outer part is made of impact-resistant plastic, which is also a good solution. Operating current – ​​10 A.

Float switch Marco AS2

Advantages:

• efficiency
• durability
• stylish appearance
• wide range of applications

Flaws:

• not detected

Advantages of the equipment

One of the main advantages of this device is the ability to function as a standard water level sensor. The product performs this function regardless of its main purpose. Thanks to this solution, it is easier for a person to use an electric pump, in addition, the product simplifies the control of some water supply systems.

The second feature of the device is the ability to function as part of the main equipment when constructing sewer systems. Due to its simple design and high efficiency, the product is in high demand in areas where it is necessary to constantly monitor the liquid level. This not only prevents the electric pump from running dry, but also prevents the water level from rising.

Wilo WA 65

​Photo: https://beru.ru

A quality product with a 5 meter cable that is suitable for installation in a variety of tanks. The insulation is performed at a high level, which prevents accidental breakage and depressurization. The body is made of durable material that can function at 55-60 degrees. The kit includes a special weight.

Float switch WILO WA 65 (PSN-O) 5m

Advantages:

• length of cable
• universal application
• convenience
• easy to clean
• efficiency

Flaws:

• not detected

Correct operation and maintenance

Compliance with basic recommendations for use ensures a long service life of each device. The switch does not require maintenance only when it is placed in water supply systems. But when the product operates in the sewer, it must be inspected and cleaned at least once a month. To do this, use a strong jet of water, which will instantly remove any contaminants that have formed. This is an important step as it prevents the float from sticking. If the device breaks down, it is better to buy a new one or replace it at a service center. Carrying out repairs yourself without special equipment is prohibited. Because the seal of the housing is broken.

The device operates properly at temperatures of 0...60 degrees. There are some manufacturers that produce designs that can withstand up to 70°, which allows you to expand the scope of application of the switches.

The length of the cable is important because it determines where the product will be used. If a person buys a 2-meter version, then it is recommended to use it only in small tanks. For wells and some storage tanks, you should purchase products with a wire length of 5-6 meters.

Grundfos GIFAS-FS-E

​Photo: https://beru.ru

An expensive and high-quality device that is suitable for sewer and water supply systems. The device is capable of operating simultaneously with two pumps. The case is made of durable material that can withstand temperature changes. Operating voltage is standard.

Float switch Grundfos GIFAS-FS-E (for filling) - cable length 3 m. with plug

Advantages:

• strength
• length of cable
• versatility
• easy to operate

Flaws:

• not detected

Making a float switch with your own hands

To make a part yourself, you will need to prepare:

• Metal ball;
• 2 buildings;
• 2 small magnets;
• Contact plates.

The plates can be made of brass or copper. They must be on different sides of the housing so that the ball between them can make contact. To make the metal strips more springy, they can be placed on a file and beaten with a hammer.

The magnets should lift the ball and hold it at an angle of 65 degrees. The housing itself can be made of any material that does not conduct electricity. Further work looks like this:

1. First, wires with a cross-section of no more than 2 mm are soldered to the contacts;
2. Next, the wires need to be insulated and placed in the housing;
3. It is also necessary to carefully insulate the inside of the case;
4. You will need to pour polyurethane foam into the float cavity and insulate the outer side of the housing;
5. After this, you need to install loops at the ends of the case and connect the cord.

The manufactured float will last quite a long time, and you will save a lot of money on the purchase of equipment.

Pedrollo T80/10

​Photo: https://beru.ru

A high-quality float switch that can function for a long period without deteriorating or becoming clogged. The design is standard, the product is a “frog float”. Electric switch. The body is connected to the sinker using a contact cable.

Float switch Pedrollo T80/10 (with PVC cable 10 m long)

Advantages:

• durability
• easy maintenance
• convenient weight
• versatility

Flaws:

• not detected

Video description

Automatic float switch.
The connection method depends on the pump power. If this characteristic does not exceed 1.2 kilowatts, then a wire connection is used. For more powerful equipment, it is necessary to use special relays or similar switching devices for this purpose.

Pump with float Source nasosovnet.ru

Wilo MS 1

​Photo: https://beru.ru

An expensive product intended for professional use where precision is important. The body is made of polypropylene, which has good wear resistance and durability. The outer part is completely smooth, eliminating the chance of contamination. The insulating element is made of high quality.

Float switch WILO MS 1

Advantages:

• efficiency
• high service life
• high quality insulation
• cable length - 10 meters
• universal design

Flaws:

• not detected

GILEKS 9008 1 m

​Photo: https://beru.ru

Float switch - universal Gilex 9008 is used to adjust the operation of the pump, connect and disconnect the power line contacts. The switch allows you to control the water level in the water supply system. Using the device, you can prevent dry running in the absence of water necessary for stable operation of the pump, as well as to turn on the device when the required amount is present.

Float switch GILEKS 9008 1 m

Advantages:

• efficiency
• nice price
• versatility

Flaws:

• not detected

The float switch is one of the main elements, so special attention must be paid to its selection. Because the correct operation of pumping equipment depends on the quality of this product. Happy shopping!

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