Electromagnetic wave shielded room
EMC Simple Room（Aluminum frame）
＜For simple EMI measurement and electromagnetic interference countermeasures＞
This is an electromagnetic wave shielded simple room developed by Medical Aid Co., Ltd.
made in Japan
It can be freely designed according to the place of use. It can be installed in one day and can be moved or relocated even after installation. Since it complies with the Fire Service Act, it can be installed in tenant buildings.
『EMC Simple Room』（Patent No. 7088525）No construction work related to lighting, air conditioning, or the structure is required. It can be assembled and installed in one day, and can be moved or relocated after installation. In addition, since the mesh has an opening rate of over 80%, it complies with the Fire Service Act and can be installed in a tenant building with just a notification.
We can also produce extra-large sizes for server rooms or drones, and assembly and installation can usually be completed in one day. We have a long track record of introducing our products to government ministries, major telecommunications companies, game development companies, and other organizations, and they are highly regarded for improving the working environment for workers by creating comfortable spaces without the stress of confined spaces, thereby increasing work efficiency.
The patented magnetic door allows for one-touch access and has excellent sealing performance. Its shielding performance is higher than that of our "EMCtent".
The economy type EMC simple room uses MG sheets (conductive cloth/copper-nickel coating) for some of the shielding material (sides, back, and bottom), and has about 30% lower breathability and heat dissipation compared to MGnet, but the shielding performance is the same.
Uses hexagonally woven silver fiber "MG Net"
About MG Net
Used on the four surfaces of the MG sheet "Economy Type A": side, back, and bottom
【Features and differences from normal shielded rooms】
- ■No structural or power supply work required. Assembly and installation is usually completed in one day. Since it is not fixed to walls, ceilings, floors, etc., it can be moved even after installation, and can be relocated to other facilities.
- ■The material used is a coarse mesh called "MGnet" that has an opening rate of over 80%※ allowing for excellent lighting, ventilation, and heat dissipation, eliminating the need for air conditioning or lighting.
- ■Compliant with Fire Service Act（※The ceiling is open (80% or more is required), so there is no need to install sprinklers or fire alarms. It can be easily installed even in a tenant building.
- ■Magnetic door（Patent acquisition）Easy to open and close with one touch for easy entry and exit
- ■Free design is possible by selecting shielding performance and size according to the purpose and budget※
※The shielding performance (KEC method: 100kHz-60GHz 23-60dB) can be changed by changing the number of layers of mesh material (2-6 layers). ※This is useful when you want to change or improve radio wave conditions when developing games or apps for various mobile devices. - ■The shielding performance of the material is in the range of 32 to 60 dB.Less susceptible to internal reflections and resonance※
※Ordinary shielding materials have a shielding performance of 80 to 100 dB or more, so they are greatly affected by internal reflections and resonance. - ■The lighting and ventilation are good, and there is no confined space stress, so the working environment has improved and work efficiency has increased.
- ■Uses silver fiber, less likely to cause metal allergies
- ■If maintenance is performed once every two years, it can be used for more than 10 years.
- ■Optional connector panels (power line filters, BNC, SMA, N-type, USB, LAN, etc. connectors) can be installed according to the application.
Examples of companies that have adopted this product
We can meet your needs such as:
- ・I want to perform a preliminary test before carrying out the main test in an anechoic chamber.
- ・Preventing illegal radio wave emissions during wireless transmission testing of unapproved communications devices under development (measures against the Radio Law)
- ・I want to install it in a workshop and develop products in a shielded room.
- ・I want a shielded room that is comfortable and stress-free even when I stay there for a long time.
- ・Since I will be going in and out frequently, it would be better to have a sealed door that doesn't require a lot of hassle to open and close.
- ・I want something made to order based on my purpose and workspace.
- ・I want to take security measures for server rooms, etc.
※Countermeasures against cyber terrorism such as information leaks and pulse bombs - ・The equipment causes electromagnetic interference, so I want to suppress external noise from mobile phones, WiFi, etc.
- ・When developing a mobile app, you want to check how it works by changing the radio wave conditions.
- ・Want to prevent or reduce human exposure to strong high-frequency electromagnetic waves
Measures to combat the Radio Law: "Provisions for Weak Radio Stations"
If the electric field strength (radio wave strength) at a distance of 3 meters from the wireless equipment is lower than the specified level (500uV/m for frequencies less than 322MHz and 150GHz or higher, 35uV/m for frequencies between 322MHz and 10GHz, and 35uV/m to 500uV/m for frequencies between 10GHz and 150GHz), then a wireless station license is not required.
Figure: Permitted electric field strength at a distance of 3m for a weak radio station
If the electric field strength emitted from a device is 10V/m at a distance of 1cm, the electric field strength at a distance of 3m is inversely proportional to the distance and can be calculated as follows:
E3m ＝ E1cm /（3m/0.01m）
E1cm = 10V/m
The distance ratio is 3m/0.01m = 300
E3m ＝ 10V/m / 300 = 0.033 V/m
If the electric field strength is 10 V/m at 1 cm, the electric field strength at a position 3 m away will be 0.033 V/m. To attenuate the electric field strength of 0.033 V/m to 500 μV/m, a shielding performance of 36.4 decibels (dB) or more is required, and to attenuate it to 35 uV/m, a shielding performance of 59.5 decibels (dB) or more is required. EMC simple rooms that meet these requirements have a triple or six-layer shielding mesh (MGnet).
If the shielding performance of the EMC simple room is triple (45dB) and does not meet the above regulations, it is possible to meet the regulations by installing an EMCbox inside.（Example: If the EMCtent performance is 45dB, and the EMCbox performance is 45dB, a total shielding performance of 90dB can be obtained.）
In addition, the Ministry of Internal Affairs and Communications Notification No. 173 specifies the performance and specifications of shielded rooms.
「Based on the regulations of Article 6, Paragraph 1, Item 1 of the Radio Construction Regulations (Regulations of the Radio Control Commission, No. 14 of 1950), the test facilities to be separately notified by the Minister of Internal Affairs and Communications are as follows: Radio anechoic chambers and other test facilities for carrying out research and development on radio waves or tests on conformity with technical standards prescribed in the Law and related documents, which are housed in metal shielding and are used at the operating frequency of radio equipment used inside the facilities.Those that clearly attenuate the electric field strength of leaked radio waves by 40 decibels or more」
If you let us know the specifications of the device to be measured, such as the electric field strength, we will propose products that meet your requirements.
Effective against electromagnetic pulse (EMP) bombs and solar flares
Electromagnetic pulses generated by electromagnetic pulse (EMP) bombs and high-power microwave weapons generate an electric field strength of approximately 50 kV/m (DC several 10 MHz). The electric field strength that reaches the ground depends on the distance from the EMP source, and the higher the explosion height, the wider the area that can be affected. The electric field strength that reaches the ground decreases with distance as follows:
●In short distances (within a few kilometers), it is several kV/m or more.
●For medium distances (several tens of kilometers), it ranges from several hundred V/m to several kV/m.
●Over long distances (several hundred kilometers or more), electromagnetic waves of tens to hundreds of V/m can reach.
Electromagnetic waves induce high-voltage currents in electronic devices, including information and communication devices, and in power and communication lines. It is predicted that even momentary exposure to an electric field strength of 10 kV/m or more will destroy electronic devices and systems.
IEC 61000-4-3 electromagnetic compatibility testing for commercial electronic equipment requires that they can withstand electric field strengths of approximately 10 V/m. In reality, however, the operation of many electronic devices can be affected by electric field strengths of several hundred V/m to 1 kV/m, generating noise and increasing the likelihood of data errors and communication errors.
To protect various electronic devices such as data center servers, daily life infrastructure (electricity, gas, water, etc.), and communications infrastructure, a shielding performance of 60dB or more is required to attenuate the maximum 10kV/m (DC several 10MHz) generated by a close-range explosion to below 10V/m.
Typically, a 10 cm thick reinforced concrete building has a shielding performance of 20 to 30 dB,EMC simple room with 3 layers (shielding performance 45dB) installedThis results in a total shielding performance of 65 to 80 dB, which can reduce the electric field strength to approximately 1/1800 to 1/10,000, making it possible to attenuate a 10 kV/m electric field strength to 5.6 V/m or less.
Furthermore, with this level of shielding performance, it is also effective against data leaks caused by Tempest attacks and the like.
The Cabinet Office has requested that infrastructure facilities such as power and communication companies, defense and disaster prevention agencies, and data centers consider measures to protect important electronic equipment and facilities from EMP destruction. In the event of an increased risk of pulse bombs or solar flares, storing important electronic equipment and facilities in an EMC simplified room will help to prevent destruction.
Can be freely designed according to the location of use
The aluminium frame, pure silver mesh and special one-touch magnetic door allow for easy entry and exit, and there is no feeling of being closed in, so you can work for long periods of time without feeling stressed.
The cords are pulled through the insertion sleeve and sealed in two places with stoppers and cable ties. *Be sure to seal both locations.
As an option, a connector panel is available to prevent noise from entering through cables. You can freely choose the type of connector.
Our CompanyMGInitiatives to prevent metal allergies in net products
- １Gold, Silver, Platinum．MGnet
- ２．General electromagnetic shielding materials
- A:titanium
- B:Gold, Silver, Platinum
- C:Zinc, manganese, copper
- D:Nickel-Cobalt-Chromium
Metal allergy is a condition in which the skin reacts to metals and chloride ions contained in sweat, causing a rash. Silver is a safe metal that is extremely unlikely to cause allergic reactions. Most common electromagnetic shielding materials use inexpensive metal plating such as nickel. Nickel dissolves more easily than other metals when it comes into direct contact with the skin, and if you sweat, it dissolves even more easily due to the action of chloride ions in sweat, so care must be taken.
Our "MGnet" products are designed with safety and intended use in mind, and are coated with silver to minimize the risk of metal allergies. Also, unlike general products that have electromagnetic shielding material coated on the fabric, "MGnet" products are silver coated at the fiber level, making them resistant to abrasion and peeling of the coating material and durable.
specification
| Parts & Materials | Standard Type | MGnet for EMC countermeasures (pure silver fiber with conductive acrylic coating) is used on five surfaces: the front, ceiling, both sides, and back. | |
|---|---|---|---|
| Economy Type | MGnet (pure silver fiber with conductive acrylic coating) for EMC countermeasures is used on the front and ceiling, and MG sheets are used on both sides and the back. | ||
| Bottom & Seam Trimming | MG sheet (conductive cloth/copper nickel coating) | ||
| Frame | aluminum | ||
| Magnetically sealed door | Stainless steel frame + neodymium magnet (Patent No. 7088525) | ||
| MGnet shielding performance （KEC Method） |
100kHz～3GHz | 2-ply | 32～45dB |
| 4-piece | 50～60dB | ||
| MGnet shielding performance （Free Space Method） |
10MHz～1.4GHz | 2-ply | 39～55dB |
| 4-piece | 50～60dB | ||
| 7.75GHz～13GHz | 2-ply | 23～42dB | |
| 4-piece | 40～60dB | ||
| MGnet shielding performance （Millimeter wave measurement using lens antenna） |
22GHz～42GHz | 2-ply | 23～32dB |
| 4-piece | 41～69dB | ||
| Conductivity of MGnet Surface Resistance（Ω/10×10cm） |
Vertical | 1.4Ω | |
| Horizontal | 3.3Ω | ||
| MGnet breathability (unit: cm2/sec) Measure how much air (cm3) passes through each square meter of each test piece per second |
1 piece | ８３％ | |
| ２ayers | ７７％ | ||
| ３ayers | ６７％ | ||
| ４ayers | ６１％ | ||
| MGnet light transmittance Visible light 320nm to 780nm transmittance When MGnet is superimposed, Measure how much light passes through |
１Pieces | ７４％ | |
| ２ayers | ５５％ | ||
| ３ayers | ４１％ | ||
| ４ayers | ３１％ | ||
| Shielding performance of MG sheet（KEC Method） | 100kHz～1GHz | 40～50dB | |
| Shielding performance of MG sheet（ASTM Method） | 1GHz～61GHz | Over 80dB | |
| Conductivity of MG sheet | Surface Resistance | 0.5Ω | |
| Service life of EMC simple rooms | Indoor use | Approximately 5 years. 2-year manufacturer's warranty If maintenance is performed once every two years, it can be used for more than 10 years. |
|
Regarding compliance with Fire Prevention Method
We received an inquiry asking if the "EMC Simple Room" violates the Fire Prevention Method, and so we checked with the fire departments in charge of the local governments of Izumi City, Osaka Prefecture, where our head office is located, as well as Osaka City, Osaka Prefecture, Shinagawa Ward, Tokyo, Yokohama City, Kanagawa Prefecture, and Sendai City, Miyagi Prefecture.
- １）The mesh material (MGnet) used in the EMC simple room is a special coarse mesh made of silver-coated nylon with mesh sizes of 1 mm or more.（Opening rate 80% or more※）Due to its structure, it has high breathability and permeability, allowing water from the sprinklers on the ceiling to reach the inside of the tent sufficiently.
- ２）Since it is not fixed to the floor, wall, or ceiling of the installation location, it can be moved in the event of a fire, making it easy to secure an evacuation route.
- ３）The inside of the shielded room can be seen from the outside, so the situation inside the shielded room can be checked even in the event of a fire.
After explaining the above points, the fire department in charge mentioned above said that the ceiling opening rate wasOver 80%※Therefore, we were able to confirm that it does not violate the Fire Department Method. However, depending on the fire department in charge, there is a possibility that a different opinion will be issued, so if you contact us, we will check with the local fire department.
Price list by size, method and performance (excluding tax)
The prices below are for the shielded room itself, and assembly and installation costs are very reasonable, starting from 150,000 yen (depending on size). The following options will be quoted separately.
●Connector panel (cuts line noise from various cables) from 200,000 yen
●Floor processing for heavy objects (load capacity 500kg) 200,000 yen and up
●LED panel lighting (only if there is not enough lighting in the installation location) from 120,000 yen<
※Economy Type (～A) differs from the regular type in the following ways:
- ・The front of the entrance and the ceiling are made of MGnet, while the four surfaces (both sides, the back, and the bottom) are made of MG sheet (conductive fabric).
- ・Since the MG sheet is opaque, its breathability, heat dissipation, and light transmission are reduced by about 30%.
- ・MG sheets have high shielding performance, so they are greatly affected by reflections and resonance.
| Part number | Width x Depth x Height (weight) | Number of Net Pieces and Performance | Reference price (excluding tax) |
|---|---|---|---|
| EMCR101820-2 | 1.0×1.8×2m (Approximately 40kg) | netDouble (35dB) | 2,000,000 yen |
| EMCR101820A-2 | 1.0×1.8×2m (Approximately 41kg) | netDouble (35dB) | 1,600,000 yen |
| EMCR101820-3 | 1.0×1.8×2m (Approximately 41kg) | netTriple (45dB) | 2,350,000 yen |
| EMCR101820A-3 | 1.0×1.8×2m (Approximately 42kg) | netTriple (45dB) | 1,750,000 yen |
| EMCR101820-4 | 1.0×1.8×2m (Approximately 42kg) | net4-fold (50dB) | 2,700,000 yen |
| EMCR101820A-4 | 1.0×1.8×2m (Approximately 43kg) | net4-fold (50dB) | 1,900,000 yen |
| EMCR181820-2 | 1.8×1.8×2m (Approximately 45kg) | netDouble (35dB) | 2,700,000 yen |
| EMCR181820A-2 | 1.8×1.8×2m (Approximately 47kg) | netDouble (35dB) | 2,100,000 yen |
| EMCR181820-3 | 1.8×1.8×2m (Approximately 46kg) | netTriple (45dB) | 3,200,000 yen |
| EMCR181820A-3 | 1.8×1.8×2m (Approximately 48kg) | netTriple (45dB) | 2,350,000 yen |
| EMCR181820-4 | 1.8×1.8×2m (Approximately 47kg) | net4-fold (50dB) | 3,700,000 yen |
| EMCR181820A-4 | 1.8×1.8×2m (Approximately 49kg) | net4-fold (50dB) | 2,600,000 yen |
| EMCR182720-2 | 1.8×2.7×2m (Approximately 50kg) | netDouble (35dB) | 3,200,000 yen |
| EMCR182720A-2 | 1.8×2.7×2m (Approximately 52kg) | netDouble (35dB) | 2,500,000 yen |
| EMCR182720-3 | 1.8×2.7×2m (Approximately 52kg) | netTriple (45dB) | 3,850,000 yen |
| EMCR182720A-3 | 1.8×2.7×2m (Approximately 54kg) | netTriple (45dB) | 2,850,000 yen |
| EMCR182720-4 | 1.8×2.7×2m (Approximately 53kg) | net4-fold (50dB) | 4,500,000 yen |
| EMCR182720A-4 | 1.8×2.7×2m (Approximately 55kg) | net4-fold (50dB) | 3,200,000 yen |
| EMCR272720-2 | 2.7×2.7×2m (Approximately 60kg) | netDouble (35dB) | 3,800,000 yen |
| EMCR272720A-2 | 2.7×2.7×2m (Approximately 63kg) | netDouble (35dB) | 2,900,000 yen |
| EMCR272720-3 | 2.7×2.7×2m (Approximately 62kg) | netTriple (45dB) | 4,650,000 yen |
| EMCR272720A-3 | 2.7×2.7×2m (Approximately 65kg) | netTriple (45dB) | 3,300,000 yen |
| EMCR272720-4 | 2.7×2.7×2m (Approximately 64kg) | net4-fold (50dB) | 5,500,000 yen |
| EMCR272720A-4 | 2.7×2.7×2m (Approximately 67kg) | net4-fold (50dB) | 3,700,000 yen |
We can also produce extra-large sizes that can be used to fly drones, and customize them to suit your needs.
| Part number | Width x Depth x Height (weight) | Number of netPieces and performance | Reference price (excluding tax) | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMCR275420-2 | 2.7×5.4×2m (Approximately 80kg) | netDouble (35dB) | 5,800,000 yen | ||||||||||||||||||||||
| EMCR275420A-2 | 2.7×5.4×2m (Approximately 84kg) | netDouble (35dB) | 4,600,000 yen | ||||||||||||||||||||||
| EMCR275420-3 | 2.7×5.4×2m (Approximately 82kg) | netTriple (45dB) | 7,200,000 yen | ||||||||||||||||||||||
| EMCR275420A-3 | 2.7×5.4×2m (Approximately 86kg) | netTriple (45dB) | 5,400,000 yen | ||||||||||||||||||||||
| EMCR275420-4 | 2.7×5.4×2m (Approximately 84kg) | net4-fold (50dB) | 8,600,000 yen | ||||||||||||||||||||||
| EMCR275420A-4 | 2.7×5.4×2m (Approximately 88kg) | net4-fold (50dB) | 6,200,000 yen | ||||||||||||||||||||||
| EMCR409020-2 | 4×9×2m (Approximately 100kg) | netDouble (35dB) | 9,500,000 yen | ||||||||||||||||||||||
| EMCR409020A-2 | 4×9×2m (Approximately 105kg) | netDouble (35dB) | 8,200,000 yen | ||||||||||||||||||||||
| EMCR409020-3 | 4×9×2m (Approximately 105kg) | netTriple (45dB) | 12,000,000 yen | ||||||||||||||||||||||
| EMCR409020A-3 | 4×9×2m (Approximately 110kg) | netTriple (45dB) | 9,900,000 yen | ||||||||||||||||||||||
| EMCR409020-4 | 4×9×2m (Approximately 110kg) | net4-fold (50dB) | 14,500,000 yen | ||||||||||||||||||||||
| EMCR409020A-4 | 4×9×2m (Approximately 115kg) | net4-fold (50dB) | 11,600,000 yen | ||||||||||||||||||||||
| EMCR409040-2 | 4×9×4m (Approximately 130kg) | netDouble (35dB) | 13,000,000 yen | ||||||||||||||||||||||
| EMCR409040A-2 | 4×9×4m (Approximately 136kg) | netDouble (35dB) | 10,000,000 yen | ||||||||||||||||||||||
| EMCR409040-3 | 4×9×4m (Approximately 135kg) | netTriple (45dB) | 17,000,000 yen | ||||||||||||||||||||||
| EMCR409040A-3 | 4×9×4m (Approximately 141kg) | netTriple (45dB) | 12,500,000 yen | ||||||||||||||||||||||
| EMCR409040-4 | 4×9×4m (Approximately 140kg) | net4-fold (50dB) | 21,000,000 yen | ||||||||||||||||||||||
| EMCR409040A-4 | 4×9×4m (Approximately 146kg) | net4-fold (50dB) | 15,000,000 yen |
| Stock solution ingredients | CAS Number |
|---|---|
| Acetate esters | 141-78-6 |
| Isopropanol | 67-63-0 |
| Ethylene glycol monobutyl ether | 111-76-2 |
| Acrylic resin solution | 104609-24-7 |
| Conductive material | Tin |
How to use Method
Make sure the spray nozzle is facing in a well-ventilated area, hold the can 20-30cm away, shake the can 10 times, and spray thinly and evenly over the entire surface. You can use the same method for up to 4 pieces, but it is more efficient to spray multiple times. After spraying, let it dry indoors for about 1-2 hours.
Spray time: 1 can can spray for 270-300 seconds
The spray time varies depending on the area as follows:
20cm×20cm（400c㎡）Spray time 1 to 1.5 seconds
30cm×30cm（900c㎡）Spray time: 2 to 3 seconds
40cm×40cm（1600c㎡）Spray time 4～5 seconds
50cm×50cm（2500c㎡）Spray time 6～7 seconds
Frequency of use
For shielding bags and sheets that are touched daily, spray once every three months. For tents and shielding boxes that are not touched, spray after the first year and then use once within the next two years; the product's performance will hardly deteriorate even after five years or more.
※Spray frequency varies depending on usage.
MG Clear Coat Spray480ml
Features
Maintenance supplies to maintain performance. Acrylic coating prevents deterioration of silver fibers. Non-conductive type
Since it is not conductive, please use it from the outside in a closed state.
Compatible products: EMCbox, EMCtent, EMC simple room
component
| Stock solution ingredients | CAS Number |
|---|---|
| Acetate esters | 141-78-6 |
| Isopropanol | 67-63-0 |
| Ethylene glycol monobutyl ether | 111-76-2 |
| Acrylic resin solution | 104609-24-7 |
How to use Method
Make sure the area is well ventilated, check the direction of the nozzle, spray thinly and evenly over the entire area from 20-30cm away. The same method can be used for up to 4-piece sprays, but it is more efficient to spray multiple times. After spraying, leave the sprayer to dry indoors for about 1-2 hours.
Spray time One can can spray for 270 to 300 seconds
Spray time changes depending on the area as follows:
20cm×20cm（400c㎡）Spray time 1～1.5 seconds
30cm×30cm（900c㎡）Spray time 2～3 seconds
40cm×40cm（1600c㎡）Spray time 4～5 seconds
50cm×50cm（2500c㎡）Spray time 6～7 seconds
Frequency of use
For shielding bags and sheets that are touched daily, spray once every three months. For tents and shielding boxes that are not touched, spray after the first year and then use once within the next two years; the product's performance will hardly deteriorate even after five years or more.
※Spray frequency varies depending on usage.
EMC Simple Room Purchase Guide
▼Telephone enquiries▼
TEL 0725-53-3270
※Please be careful not to enter the wrong number.
●Reception hours: Monday to Friday 9:00 to 17:00 (excluding New Year's holidays and public holidays)