ESPEC North America, Inc. (Corporate office)4141 Central Parkway
Hudsonville, MI 49426 USA ESPEC North America, Inc. (Colorado/Qualmark office)
12600 E. Smith Road
Aurora, CO 80011 USA
303-254-8800
ESPEC has the widest selection of temperature chambers, humidity chambers, and precision industrial ovens.
Benchtop Test Chambers
Twenty different benchtop models
- Temp-only or Temp/humidity
- Ranges as wide as -85 to 180°C
- Sizes from 1 to 4 cu. ft.
- Fully programmable via touch-screen
- Space-saving design
Walk-in Test Chambers
Standard and custom walk-in rooms deliver the temperature or humidity testing performance you need:
- Modular for flexibility in design and installation
- One-piece construction for extreme conditions
- Drive-in systems for automotive applications
Industrial Ovens
ESPEC’s precision industrial ovens are used for high-temperature testing, as well as heat treatment and drying during manufacturing. With over 60,000 units sold worldwide, we have the high quality and features you need.
ESPEC has the widest selection of environmental test chambers. We can meet your reliability testing needs with our broad range of test chamber models. With our complete range of temperature chambers, humidity chambers, Qualmark chambers, and precision industrial ovens, our testing equipment will help you improve your product reliability. We can also work with you to develop a specialty custom-built chamber if you have more specific testing needs. Browse our environmental test chambers and contact us today to get your fast and free price quote!
Thermal shock, temperature cycling, accelerated stress test. ESPEC has more types of chambers for extreme testing of your product.
Thermal Shock Chambers
Five types of thermal shock chambers, including air-to-air and liquid-to-liquid:
- TSE-12-A — is the best model to consider first
- TSD-101-W — next larger model
- TSA Series — two or three-zone capable
- TSB Series — liquid thermal shock
- TCC Series — rapid-rate cycling
Global-N Temperature Cycling
Faster temperature cycling of 5 to 20°C/min.
- Compact footprint
- Over 50 temperature-only or temperature/humidity models
- Interior sizes: 4, 12, 16, 28, or 35 cu. ft.
- Stainless steel interior and exterior
- Touch screen controller and USB standard
Qualmark HALT/HASS Systems
Environmental Chambers on Steroids for faster product development
(HALT = Highly Accelerated LIfe Testing)
- -100 to 200°C at rates up to 100°C/min.
- Six degree-of-freedom vibration / repetitive-shock tables
- Table sizes from 18"x18” to 100”x48”
Extreme Thermal Cycling
All the thermal performance of a HALT system, but without a vibration table.
- -100 to 200°C at rates up to 100°C/min.
- Five sizes
- Inferno option for extended high range of 250°C
- Use in place of a traditional thermal shock chamber, or to supplement existing HALT programs.
Compact Temperature Cycling
New model BTZ-4200 with fast 15°C/min. change rate
- Wide temperature range: -70 to 180°C
- Compact design based on our 4 cu. ft. benchtop models
- Fits thru doors, requires no cooling water or LN2
Environmental Stress Screening (ESS)
Stress test chambers to eliminate infant mortality and ensure the reliability of your product
- Change rates up to 20°C/min
- >500 CFM horizontal airflow (workspace)
- Designed for high volume throughput
ESPEC has the widest selection of environmental test chambers. We can meet your reliability testing needs with our broad range of test chamber models. With our complete range of temperature chambers, humidity chambers, Qualmark chambers, and precision industrial ovens, our testing equipment will help you improve your product reliability. We can also work with you to develop a specialty custom-built chamber if you have more specific testing needs. Browse our environmental test chambers and contact us today to get your fast and free price quote!
Qualmark HALT Chambers are now a product line of ESPEC North America, further expanding "The Widest Selection of Chambers"
Qualmark HALT Systems
Qualmark offers the industry's most popular HALT chambers
(Highly Accelerated Life Testing)
- Up to 100°C/min., -100 to 200°C
- Six degree-of-freedom vibration / repetitive-shock system
- Six chamber sizes witth tables from 18"x18” to 48”x100”
Non-Nitrogen HALT Systems
Conduct HALT programs with a high performance cascade refrigeration system
- 15°C/min change rates (without LN2)
- -70 to 180°C temperature range
- Acceleration: 7 - 75gRMS (bare table)
The melding of ESPEC and Qualmark technologies
Qualmark HASS Systems
Screen for known product weaknesses at production volumes
(Highly Accelerated Stress Screening)
- Six tables for maximum throughput
- -60 to 120°C at rates up to 60°C/min.
- Six-degree-of-freedom vibration system
- Acceleration: 5 - 40gRMS
Qualmark Benchtop Repetitive-Shock Table
Benchtop Vibration / Qualmark Repetitive-Shock Table
- Six-degree-of-freedom vibration system
- Acceleration: 5 - 60gRMS
- Table sizes of 18"x18” or 24”x24”
- Configurable for use inside temperature test chambers
ESPEC has the widest selection of environmental test chambers. We can meet your reliability testing needs with our broad range of test chamber models. With our complete range of temperature chambers, humidity chambers, Qualmark chambers, and precision industrial ovens, our testing equipment will help you improve your product reliability. We can also work with you to develop a specialty custom-built chamber if you have more specific testing needs. Browse our environmental test chambers and contact us today to get your fast and free price quote!
Specialty environmental chambers and custom-built systems for specific testing applications.
Settling Dust Chambers
A ready-made solution for common dust tests for automotive and electronic-cabinet requirements. Often specified for use with "Arizona fine dust". See a video demonstration.
- Two standard sizes
- Low mess design
- Options for different test methods
Drive-In Chambers
ESPEC customizes each drive-in to include features to suit the simulation requirements.
- Solid or panelized construction
- Configurable for running vehicle testing
- Dynamometer or Four-post road simulator integration
HAST - Highly Accelerated Stress Test Chambers
Drastically reduce time for humidity testing with high temperatures and high pressure. Designed for consistant, repeatable results.
- Touch-screen controller
- Conforms to EIA/JEDEC tests A110 & 102C
- Automatic humidity filling
- Specimen power terminals
Rain & Spray Test Chambers
Chambers for rain & spray simulation, including special tests like car wash spray.
- Can meet IP Code, IEC, SAE, JIS, and most automotive-OEM test standards
- High-volume floor drain system
- Water pressure regulators, gauges and flow meters
- Speed control for the rotating spray nozzles
- See video demonstration of different spray types
AGREE Chambers
Industrial-quality chambers for combination testing with vibration systems
- Fast temperature changes of 5 to 25°C/m.
- Chamber floor designed for interchangeable vibration system “floor plugs”
- Customizable to meet your exact requirements.
Tensile Test Chambers
Temperature/humidity test chambers designed to work with tensile-test machines
- Configured to fit your tensile-test machine
- Refrigeration for temperature (and humidity) control
- Actuator slots in the chamber floor and ceiling for test grips
- Cart or bench installation
Altitude Chambers
Simultaneous testing of temperature and low-pressure altitude conditions
- Altitude range from ground to 100,000 feet
- Temperature range from -70 to 170°C
- Automatic altitude control, integrated with temperature controller
- Custom size and performance to meet your testing
Solar Panel Test Chambers Chambers
Chambers to complete certification testing of solar panel modules to IEC or UL standards.
- Interior sizes: 48, 112 & 282 cu. ft.
- 85°C/85% RH steady state testing
- Temperature cycling rates up to 15°C/min.
ESPEC has the widest selection of environmental test chambers. We can meet your reliability testing needs with our broad range of test chamber models. With our complete range of temperature chambers, humidity chambers, Qualmark chambers, and precision industrial ovens, our testing equipment will help you improve your product reliability. We can also work with you to develop a specialty custom-built chamber if you have more specific testing needs. Browse our environmental test chambers and contact us today to get your fast and free price quote!
Stock and rental chambers from ESPEC.
Criterion Benchtop Models
Nine different models, two chamber sizes
- Large interiors: 1.5 or 4 cu. ft.
- Temperature range: -20 or -70 to 180°C
- Models with humidity: 10 to 95%
- Space-saving vertical design
- Your most economical choice
Rental Models
Select models of our most popular chambers are available for rental.
- SH Benchtops
- Criterion Benchtops
- Platinous Reach-ins
- TSE-12-A Thermal Shock
- Global-N Reach-in Temp Cycling
- Qualmark Non-Nitrogen HALT
Refurbished Qualmark HALT Models
- Get a HALT chamber with significant savings OR
- Get your existing HALT chamber upgraded
Platinous Models
Your first choice for most general applications. Quality and competitive pricing.
- Temperature-only or temperature/humidity models
- 8, 14, and 32 cubic foot workspaces
- Fully programmable, touch-screen operation
Compact Temperature Cycling Models
New model BTZ-4200 with fast 15°C/min. change rate
- Wide temperature range: -70 to 180°C
- Compact design based on our 4 cu. ft. benchtop models
- Fits thru doors, requires no cooling water or LN2
SU/SH Series Benchtop Models
Premium features for the ultimate in testing flexibility
- Two sizes: 0.8 & 2.2 cubic feet
- Temp range of up to -60 to 150°C
- Humidity models with 30 to 95%RH
- USB and Ethernet standard
TSE-12-A Models
Small, economical system
- Meets strict Mil-Std 883 performance
- Volume: less than 1 cu. ft. (10L)
- Only requires electricity
- Direct-drive verticle-lift for reliable transfer between zones
ESPEC has the widest selection of environmental test chambers. We can meet your reliability testing needs with our broad range of test chamber models. With our complete range of temperature chambers, humidity chambers, Qualmark chambers, and precision industrial ovens, our testing equipment will help you improve your product reliability. We can also work with you to develop a specialty custom-built chamber if you have more specific testing needs. Browse our environmental test chambers and contact us today to get your fast and free price quote!
Learn more about Reach-in Test Chambers
Learn more about Thermal Shock Chambers
Following are links to the most popular thermal shock testing standards in use today.
EIA, Electronics Industries Association
EIA’s JEDEC Solid State Products Engineering Council has many published specifications for environmental testing. The JESD22 group of specifications include temperature/humidity, thermal shock, and HAST. You must register, but the standards are free!
- The air-to-air thermal shock test is JESD22-A104D “Temperature Cycling”
- The liquid-to-liquid thermal shock test is JESD22-A106B “Thermal Shock”
Mil-Std 883:
The electronics industry has used this Military Standard 883 as theirs. It is what the JEDEC spec listed above is based on. This page offers the entire text of the standard in Adobe Acrobat format, but you don’t need the whole thing. (Note: Current version is “883J Method 1010.8”. Previous versions 883C, 883D, 883E, 883F, 883G, 883H are the same basic standard, which was numbered 1010.6 and 1010.7.)
- Download the 1000 section (covers test method) Print out pages 33-35 to get Method 1010.8 “Temperature Cycling” for air-to-air thermal shock
- Print out pages 37-39 to get Method 1011.9 “Thermal Shock” for liquid-to-liquid thermal shock
Mil-Std 202G:
Another thermal shock method is part of Military Standard 202. Once again, you don’t need the whole specification, just a few pages.
- Scroll down till you find Method 107 “Thermal Shock” for air-to-air and liquid-to-liquid thermal shock methods
Technology Report Downloads:
Our Technology Reports cover thermal shock testing as part of a general review of testing methods, as well as specific articles. These are in the Adobe Acrobat format.
Issue #3 (pdf link)
- Understanding the Technology
• Thermal shock testing
• Current trends and example - Report 1: Confirming reliability of printed circuit boards with temperature cycle and thermal shock
Unfortunately many people use the same name to refer to different tests. Thermal shock is one of those. Let me elaborate:
Definitions:
1. Alternately dipping the product in hot and cold liquids. More precisely, this should be referred to “liquid-to-liquid thermal shock”.
2. Changing the air temperature as quickly as possible in a single chamber. This we would recommend calling “thermal cycling” or “stress screening” and isn’t truly thermal shock.
3. Moving the product from a hot to a cold chamber or other sudden change of the air temperature. This is “air-to-air thermal shock” or “two-zone thermal shock.”
***
Sometimes during transfer as described in 3, there is an intermediate step of exposure to room temperature. This is done to allow manual transfer of the product. This is called a “three-zone thermal shock”. Mil-Std 202F method 107G allows such a step, for example.
So, from the above list, you can see the variations in what people commonly call “thermal shock”. It should also be noted that some specifications call for “thermal cycling” which is actually “air-to-air thermal shock”.
With thermal shock tests, there are also several ways to define and measure the performance. Thermal shock tests focus on “recovery time”, or how long it takes to stabilize after the switch.
Recovery time can also be defined several ways:
1. Time it takes for the product to move from zone to zone. True name: “transfer time”
2. Time for the air temperature to recover in the new zone. This can be measured in the air stream before or after the test load. This can be called “upstream recovery time” or “downstream recovery time”.
3. Time for the physical product to recover, called “product recovery”. This time is dependent on where the sensor is placed on the load. Mil-Std 883 method 1010.7 defines their requirement as “worst-case” product recovery, which is for a sensor embedded in a sample buried among other samples.
***
Of course, some test specifications only make the confusion between thermal shock and thermal cycling worse. One example is Telcordia (Bellcore) GR-468 that states “Method 1010 of Mil-Std 883C with a minimum temperature ramp rate of 10C/min.” Many people assume that a cycling chamber that does 10°C/min. is sufficient, although the Mil-Std clearly defines the transfer time and recover time, which, if you have been paying attention a thermal shock test.
So when you are asked to do a thermal shock test, be sure that you have a clear definition of the requirements, otherwise it is easy to do incorrectly, or buy the wrong equipment.
ESPEC North America, Inc. (Corporate office)4141 Central Parkway
Hudsonville, MI 49426 USA ESPEC North America, Inc. (Colorado/Qualmark office)
12600 E. Smith Road
Aurora, CO 80011 USA
303-254-8800