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AST for HALT/HASS Testing

Accelerated Stress Testing forces product failures faster than conventional testing methods. HALT Testing gives an accelerated view of how your product will react in different environments and how long it can handle it before it fails.

Thermotron’s Accelerated Stress Testing climatic chambers are equipped with innovative, state-of-the-art features for effective HALT (Highly Accelerated Life Testing) and HASS (Highly Accelerated Stress Screening) including: change rates up to 70°C/minute, adjustable air distribution, multi-functional controller, ergonomic workstation, and multiple safety features.

Combining extreme temperature change rates with repetitive shock vibration testing provides a unique and forceful testing experience to determine the product’s operating and destruct limits. The vibration testing used for HALT/HASS is conducted with Thermotron’s patented multi-axis repetitive shock vibration table, which can be configured to provide superior uniformity across the entire table with the exclusive, patented Multi-Zone Control.

Specifications
Features & Options
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Model Number	Workspace Dimensions	Temperature Range	Cooling Performance
AST-8 HALT/HASS Chamber	24" x 23.5" x 24"	-100˚C to 200˚C	>50˚C/min on product
AST-18 HALT/HASS Chamber	33" x 34" x 30"	-100°C to 200°C	>50°C/min on product
AST-35 HALT/HASS Chamber	42" x 42" x 40"	-100°C to 200°C	>70°C/min on product
AST-70 HALT/HASS Chamber	54" x 56" x 40"	-100°C to 200°C	>70°C/min on product

Standard

Optional

Access Port
Access ports are available to easily reach into the environmental chamber to adjust the product under test. Most climate chambers come with one standard port. Additional ports can be added to the environmental chamber. Access Ports are constructed of stainless steel, heliarc welded to the interior liner. Environmental chamber users select the access port size and location at no additional charge. Port availability may vary depending on environmental chamber model. Custom options are available.
The following are the most standard sizes:

3" (7.5 cm)

4" (10 cm)

5" (12.5 cm)

6" (15 cm)

8" (20 cm)- HALT Chamber Only
Boost Cooling and Heating

Boost cooling and heating options enhance performance on select environmental test equipment. Liquid nitrogen Boost and Carbon Dioxide Boost are cooling injection systems that enable faster pull-downs and product temperature change rates in an environmental chamber.
Adding the extra heat feature to your environmental chamber accelerates the test chamber's heating capabilities to improve air and product temperature change rates.
Custom Colors
You are probably used to only seeing a Thermotron environmental chamber or electrodynamic shaker in just one of two colors – blue and gray. But we can in fact paint your piece of test equipment any color you like, provided you let us know which one.

Custom paint color is an available optional feature for equipment purchased from Thermotron, and the process is quite simple. During the quote process, you work with our Sales and Application Engineers and simply notify them what color you want your test equipment to be painted. We primarily work with RAL and FED-STD-595C – Color Standards, but if you provide us with a color and the standard it comes from we will work with our paint supplier to ensure that your environmental chamber or electrodynamic shaker is painted your specified color.

So, why would you want to have your climate chamber painted a different color? There are many reasons here are a few of the most common:

Branding – customers want to have their equipment painted to promote their brand, and incorporate their branding colors into items their staff and customers see every day.

Grouping – Some customers with many Thermotron chambers in their lab need them to be color coordinated by function, ability, or size.

Safety – We have also had customers request that only certain parts of the environmental chamber or electrodynamic shaker are painted. For example we had a customer paint all electrical panels bright orange to highlight potential safety hazards.

There are many unique reasons to specify a paint color on your environmental chamber or electrodynamic shaker, almost as many as there are colors. What color would you put on your test equipment?
Fixtures

Fixtures are often an important aspect of Environmental testing with chambers or vibration. Fixtures help avoid errors in product responses to various environmental simulations. Proper fixture design and product mounting are essential to accurate and effective testing.
Multi-Zone Control

Experience ultimate table uniformity with Thermotron’s patented Multi-Zone Control, the first of its kind on the market. The patented repetitive shock table can be divided into one, two, or four zones and run a test with superb uniformity, within 5% Grms of each zone. This feature makes dynamic adjustments automatically, compensating for system variability including inconsistencies in the table, impactor wear, air supply, fixtures, mounting, etc. Download the brochure. US Patent: US 9377375 B2
Additional Accelerometers

All Thermotron vibration test systems include accelerometers to measure the proper acceleration that products experience while under test on a vibration shaker. Typically, Thermotron repetitive shock tables include four accelerometers and electrodynamic vibration shakers include two. Users may purchase additional accelerometers to use on the vibration shakers.
CSA or CE Electrical Codes

For equipment going to Canada or the European Union, Thermotron can build the equipment to CSA or CE electrical codes to ensure the safety of equipment users and the facility.
Door Interlocks

As an optional safety feature the door interlocks prevent the chamber door from opening during a test.
Impactor Monitor System

The impactor monitor system visually illustrates the impactor’s status on the screen. A red impactor indicates the system cannot compensate enough air pressure and needs to be replaced. The AST-8800 monitors the air pressure to each impactor anytime the system is running. The benefit of adjusting air pressure is that test results are more consistent and accurate.
Quiet Package

A quiet package is an optional feature that minimizes the noise levels coming from environmental test equipment. Depending on the equipment (electrodynamic shaker or climate chamber) and the size of the environmental test equipment, the quiet package will look and vary in functionality. For more information contact your local sales representative.
Vacuum Jacketed Inlet Valve

The vacuum jacketed inlet valve is an optional feature when Liquid Nitrogen is in use. Its purpose is to prevent condensation and frost build up from forming on pipes.