Laboratory Electromagnet

Laboratory Electromagnet is a closed magnetic circuit, composed of the coil, yoke, iron core (pole), and pole head. 
Energized electrically conductive winding (coil) can generate a magnetic field, the internally arranged irregular ferromagnetic metal atoms of the iron core (pole) rearrange regularly with the action of the external coil's magnetic field, together point in one direction, thereby these ferromagnetic metal atoms are magnetized to increase the magnetic flux so that a considerable amount of the magnetic flux Φ is produced during the iron core, the yoke, and the air gap. When the control power supply current is changed, the controllable high magnetic field is formed between the air gap of two poles.

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Dexinmag is a world-renowned manufacturer specializing in the production of Laboratory Electromagnets.

Working Principle of the Laboratory Electromagnet

Precautions:

Power supply parameters: Make sure the power supply used meets the rated voltage and current requirements of the customized DC electromagnet. Too high or too low voltage may cause unstable performance or damage to the electromagnet.
Current control: Make sure the current control is stable during use. Too high a current may cause the electromagnet to overheat or the coil to burn out, while too low a current may result in insufficient magnetic field strength.
Temperature control: The electromagnet generates heat when working, so ensure adequate heat dissipation conditions to avoid overheating. Long-term high current operation may require cooling measures to be considered.
Safety distance: Keep a safe distance when working to avoid the impact of electromagnetic radiation on the human body. Especially when a strong magnetic field is generated, avoid placing ferromagnetic objects close to the electromagnet to avoid adsorption or collision accidents.
Electromagnetic shielding: If there are equipment or devices that are sensitive to magnetic fields around, you need to consider shielding the electromagnet to prevent interference or damage to other equipment.
Transportation and Installation: Be careful when transporting and installing the electromagnet to avoid damage caused by collision or falling. When installing, make sure the electromagnet is in a stable position and well connected.
Periodic inspection: Regularly check whether the connecting wires, coils, cooling systems, and other components of the electromagnet are working properly to ensure the safety and stability of the equipment.
Usage environment: Consider the conditions of the use environment and avoid placing the customized DC electromagnet in a humid, corrosive, or flammable environment to prevent equipment damage or safety accidents.

What does a Laboratory Electromagnet do?

Laboratory electromagnet or dipole electromagnet can generate adjustable magnetic fields and are suitable for magnetic experiments in scientific research institutions, colleges and universities, and factories.

 

Lab electromagnet applies to Hall effect studies, magnetoresistance effect studies, magneto-optical research, magnetostriction studies, torque magnetometers, force method magnetometers, VSM, etc.

Electromagnet magnetic field control system

The CE certificate of DX series electromagnets

Trouble shooting:

Trouble

Possible causes

How to check

Solution

Can’t measure the magnetic field after electrify

Electromagnet is in the open circuit state

Check the connection between the electromagnet and power supply

Connect the wire

Power supply doesn’t work

Measure the output current of power supply

Inform the manufacturer for maintenance

The inside winding of electromagnet is broken

Measure the DC resistance of electromagnet

Inform the manufacturer for maintenance

The gauss meter is broken or measurement is wrong

Check the gauss meter or change another gauss meter

Please note whether the gauss meter is used correctly

Magnetic field can’t reach the index

Electromagnet series or parallel windings are in opposite direction

Change the terminal connection direction and measure the magnetic field

 

The output current of power supply is not accurate

Measure the output current of power supply

Inform the manufacturer for maintenance

The inside winding of electromagnet is in short circuit

Measure the DC resistance of electromagnet

Inform the manufacturer for maintenance

The air gap is incorrect

Check the air gap

 

The used pole head is wrong

Change the smaller pole head or FeCo pole head

 

When working in high magnetic field, the current can’t be adjust to setting value

The electromagnet works for a long time and heats over, the resistance is high

Measure the surface temperature of the coil,

Measure the DC resistance of electromagnet

Stop working until the coil is cooled down

Electric leakage

The winding of electromagnet is in short circuit

 

Inform the manufacturer for maintenance

Water leakage

Pipe leakage

 

Inform the manufacturer for maintenance

Pipe condensation

The water temperature in the cycle refrigerator is too low

Set the water temperature to be 15~20℃

Parameters of lab electromagnet(take the DXWD electromagnet as an example):

Model

Pole Diameter

Air Gap Range 

Pole Face 

Magnetic field index 

Power

 (mm)

(mm)

 (mm)

Air Gap (mm) 

Maxium Magnetic Field (T)

DXWD-50

Φ50

0-80

Φ50

10

0.9

0.3KW

DXWD-80

Φ80

0-80

Φ50

20

1.1

1.2KW

DXWD-100

Φ100

0-80

Φ60

10 

1.8

1.6KW

Φ100 

20

1

DXWD-130

Φ130

0-100

Φ60

10 

2.3

3.0KW

Φ120 

30

1.2

DXWD-175

Φ175

0-120

Φ60

10 

2.3

5.0KW

Φ100 

50

1.25

Φ150

100

0.6

DXWD-200

Φ200

0-140

Φ60

10

2.6

8.0KW

Φ80

30

1.6

Φ140

70

0.9

DXWD-250

Φ250

0-140

Φ60

10

2.9

12.0KW

Φ80

40

1.9

Φ120

80

1.1

DXWD-280

Φ280

0-150

Φ70

10

3.1

16.0KW

Φ120

70

1.5

DXWD-380

Φ380

0-180

Φ100 

40

2.2

20.0KW

Customization is available, and most of Dexinmag products are custom-made.

Dexinmag company manufactures a variety of electromagnets, and according to customer requirements, Dexinmag's electromagnets can be adapted to temperature controllers, water cooling systems, translation stages, etc.

DXWD-50 air gap electromagnet with 360° Rotation Stage

Vertical variable air gap electromagnet

Horizontal adjustable magnetic field electromagnet

Multipolar electromagnet

Unipolar electromagnet

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