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One, nuclear magnetic resonance shielded room (magnetic shielding and radio frequency copper shield) dedicated to the magnetic resonance device shielding, to prevent external electromagnetic interference. According to the user needs, can design the magnetic field shielding and the dual function of the radio frequency shielding.

Two, shielding effectiveness: according to national GB12190-90 standard test:

（1）：10MHz ～100MHz ≥100dB

(1): 10MHz ~ 100MHz shielding efficiency of more than 100dB

（2）：＞3KΩ-10KΩ

(2) on the ground insulation: > 3K -10K

Three, production basi

Magnetic resonance imaging should be reduced as much as possible to reduce the magnetic material, the magnetic material will affect the magnetic field uniformity, the influence of the image quality, good shielding of the image quality is very important. LED lamp should be used indoors, the observation window should be laid in the metal copper mesh shield material, the double layer glass contact must be firmly attached, and the surrounding building insulation, through a little grounding, grounding resistance should be less than the specified value. The signal line of the power supply line, etc., must be processed by the filter at the entranc

The influence of magnetic field on the envir

The influence of minimum distance (m) on the affected equipment

5 computer, magnetic tape, disk

6 pacemaker

7 or other instrument with a cathode ray tube

X ray and gamma camera, image intensifier with 15 electron microscope

Influence of external environment on magnetic field:

The occurrence of a minimum distance (m) dry source

1 iron magnetic reinforcement and oxygen tube on the ceiling and floor

5 reinforcement in reinforced concrete

12 hospitals in the cart, high-power RF generator

15 elevator, car, high voltage cable, transformer

Four, material composition:

1, shielded chamber shell using 0.2-1mm copper or brass plate module site assembly welding, keel frame with high quality fire wood or aluminum alloy material.

2, nuclear magnetic shielding door door standard size: 0.9m * 2m, 1.2m * 2m, special size requirements.

300mm×300mm、300mm×600mm。

3. The size of the honeycomb type non - flux guide window is: 300mm * 300mm, 300mm * 600mm.

4, shielded room equipment power supply and signal line from the low frequency power supply filter processing.

5, indoor lighting using incandescent lamp or LED diamagnetic ceiling lamp, outdoor configuration power control box.

6, according to the standard requirements, shielded room should be configured to shield the observation window, signal transmission board, air conditioning shielding, medical gas waveguide interface, etc..

Five, experience and ability (design, production, construction, management) is a trustworthy:

Hengli design, in the NMR shielding room of the production, construction, in the peer in all the top spear. We in order to safeguard the interests of customers, to meet customer requirements as the guidelines, in ensuring the quality of the project, to ensure that the shortest period of time to complete the project, according to the international quality system certification requirements for the successful completion of the project, the user satisfaction, rest assured.

Six, technology and quality lead in the same:

With independent R & D power, and with the world's scientific and technological achievements. Continuous development and innovation and strong technical support, to ensure that the product is always ahead of peers, the company and the majority of domestic and foreign companies to get approval and cooperation