NTS News Center

Latest News in Testing, Inspection and Certification

NTS News Center - Latest News in Testing, Inspection and Certification

Japan VCCI Marking and Statement Regulation

Japan VCCI is a voluntary EMC approval for IT Equipment only; however it is well known that importers, distributors, retailers and local representatives in country may demand VCCI approval to sell the products.

We have recently found that some manufactures are confused about the marking and statement requirements and therefore prepared the table below for clarification.

ia table 1

VCCI Mark:

image001

Class A Statement:

image002

Class B Statement:

image003

Note: There are some other statements that are rarely required.

Contact our NTS International Approvals Team at IATeam@nts.com if you need more details about the VCCI mark (such as sizing, color..etc.), e-labelling regulation, translation of the statements, regulation for small products and other questions.

NTS Chicago Expansion Phase 5: LN2 Tank Installation

Our Chicago team is really excited about the recent installation of a liquid nitrogen tank, the process taking months to complete. Scroll down for some great pictures of this big job! Equipment is being moved from our Palatine laboratory to the new Mt. Prospect location this week and we are already quoting for our 5m EMC chamber, coming online September 6th.

Bollards surrounding LN2 Tank Pad

Bollards installed to surround the LN2 tank pad

TWO cranes and a crew for the install!

TWO cranes and a crew for the install!

The finished product, ready for your next test project.

The finished product, ready for your next test project.

Saudi Arabia CITC Application Requirement Update

CITC LogoSaudi Arabia CITC has started to implement authentication measures for documents being submitted for Type Approvals. Most notably is the Declaration of Conformity (DoC) and the laboratory confirmation letter.

The DoC of a particular model must now include official corporate seal or stamp by the authorized person. Same requirements are applicable for the laboratory confirmation letter. It needs to specify that the test report was issued by the lab and the applicable standards have been met for the model.

If for various reasons the document cannot be sealed or stamped NTS has an alternative, acceptable method of having this document approved. Please contact our NTS International Approvals Team at IATeam@nts.com

NTS Chicago Expansion Phase 4: 5m EMC Chamber

The NTS Chicago team has been moving at a rapid pace. Our oversized 5m Semi-Anechoic EMC chamber at the new Mt. Prospect, IL laboratory is almost finished and ready for testing on September 6th. We’ve designed this new equipment with our customers in mind!

Some quick specs to note:

  • Oversized at 44’ x 32’ x 19’
  • 10’ x 10’ door aligned with building doors
  • 12,000 lb capacity floor and turntable
  • Combustion Engine Exhaust System
  • 3m turntable
  • Dual measurement range 3m and 5m

The video below shows progress from June to August.

And here you can see a shot of the Ferrite tile being applied to the interior

5m Chamber Ferrite Tile Application

We are continuing testing as usual for environmental, dynamics, electrical, mechanical, chemical and more throughout the move with no interruptions.

Keep submitting your quotes, or send one for the new EMC chamber coming online September 6th. We know you’ll be interested in our competitive pricing for this brand new equipment.

Click here to request a quote

Click here to contact the Chicago team with any questions about the new location

Official grand opening for the new location will take place on October 6th, stay tuned to the blog for more details!!

NTS Chicago Expansion Phase 3: 24′ x 24′ MIL-STD EMC Chamber

We are making rapid progress with construction at our new Chicago area laboratory located at 1660 Wall Street in Mt. Prospect, IL. In the time-lapse video below, you can watch as a 24’ x 24’ MIL Std. EMC Chamber is put together in less than 10 seconds!

The finished product!

Open and ready for business!

Open and ready for business!

We are also actively working on our 5m EMC chamber build, scroll down for more photos and details ↓↓↓

Here you can see our experts working hard on the ceiling installation

Here you can see our experts working hard on the ceiling installation

A side view of the chamber, we're almost there!

A side view of the chamber, we’re almost there!

We are already taking quotes for this new EMC chamber which will come online September 6th. Our current location in Palatine, IL is fully operational during the move so don’t forget to send us your quote requests for any testing needs. We are ready to meet your schedule with no delays.

The official grand opening of the new location will take place on October 6th. We will be posting more updates with details as the date draws closer so be sure to keep an eye on our blog!

NTS Chicago Expansion Phase 2: New Offices

Phase 2 of our new Chicago area laboratory in Mt. Prospect, IL is almost completed, with 6,500 square feet of office space being added. It will contain 11 rooms, 2 conference rooms, a customer lounge, kitchen and reception area. This new space will also house a large state-of-the-art control room for monitoring environmental and dynamics equipment. The video below shows progress from February to April in just over a minute!

In the image below, you can see the newest additions to this area with open office space and a collaboration area for clients and NTS employees.

Collaboration Table

Our current location in Palatine, IL is still fully operational during the move so don’t forget to send us your quote requests for test needs.

EMC testing will be coming online at the new laboratory on September 6th, and our official grand opening will happen on October 6th. Stay tuned for more details!

NTS Chicago Expansion Phase 1: Demising Walls

Work has begun inside our new facility at 1660 Wall Street in Mount Prospect, IL and we have lots to share! The demising walls were recently constructed which will house all of the existing equipment at the current NTS Chicago location, plus three new EMC chambers, a blowing sand system and blowing dust system. Check out the time-lapse video below showing our progress over the month of February.

Our construction crew has also been adding drainage as shown in this photo below of the thermal cycling area.

Thermal Cycling area drains

Lastly, an oversized 5 meter semi-anechoic chamber, which will anchor our new EMC department, is under construction (shown below) and scheduled to come online in early September.

Chicago 5m 7-21-18

Our current location in Palatine, IL is still fully operational during the move so don’t forget to send us your quote requests for any testing needs.

EMC testing coming online in the new laboratory on September 6th!

Argentina HSE Statement Requirement Update

Argentina has published Resolution 171/2016 in April, 2016 replacing Resolution 508[1] and the HSE (Highly Specialized Equipment) statement is no longer mandatory. However, the manufacturers can still opt to implement the statement or keep it as is if it’s already available on the products.

For any further questions regarding this new development, please contact our NTS International Approvals Team at IATeam@nts.com.

[1] NTS International Approvals Update: Changes to Labeling and Logo Requirements 

 

Methodology for Transient Thermal Analysis of Machine Gun Barrels Subjected to Burst Firing Schedules

Authors: Ryan Hill and Logan McLeod

This work presents a method for simulating the heating of machine gun barrels during burst firings. The method utilizes a two-dimensional axisymmetric finite element model which solves the highly transient convection input on the bore wall, conduction through the barrel, and convective and radiative cooling on the outside wall. The transient input is derived from a coupling of a lumped-parameter interior ballistics code with a one-dimensional compressible flow model which includes the discharge of the combustion product gas behind the projectile. This transient convective boundary condition can be repeated as desired for arbitrary firing schedules. Finally, an example simulation is performed on a small caliber machine gun and compared with experimental data.

Fill out the form below to download a PDF version of this white paper.

Analysis of Inter-Chamber Energy and Mass Transport in High-Low Pressure Gun Systems

Authors: Ryan Hill and Logan McLeod
Two assumptions are often made by lumped-parameter codes in the analysis of dual-chamber guns: (1) that the gas enters the large chamber at the propellant flame temperature, and (2) that the flow between the chambers is that of an ideal gas. An investigation on the effects of these two assumptions was performed by creating three lumped-parameter codes: one that maintains the two assumptions above, and two that conserve flow energy of the gas instead of maintaining a constant temperature. Of the latter two models, one uses an ideal gas and the other uses a noble-abel gas for the flow calculations. In this work, the noble-abel gas equation of state will be discussed in detail as well as its implications to the gas flow. Then, descriptions of the three approaches to the gas flow model will be presented, followed finally by a comparison of simulation results from the three models.

Fill out the form below to download a PDF version of this white paper.