
High Precision ESS Rapid Rate Environmental Test Chamber for Extreme Temperature Cycling
1. Advantages of Temperature Cycling:
Many independent studies have been conducted analyzing the
effectiveness of various types of ESS processes. Conclusive data
has been compiled by many manufacturers of electronic assemblies
supporting today's thinking that temperature cycling is the most
effective type of screening process.
While it has been demonstrated that both temperature cycling and
random vibration together is the most effective screen in terms of
identifying latent defects, if a single screen is to be used,
temperature cycling is considered to be the single most effective
screen in identifying latent defects. According to the ESSEH
guidelines, temperature cycling regularly detected an average of
two-thirds more latent product defects than with random vibration
alone, which is ranked second most effective in identifying
defects.
Stress uniformity is without question the most important aspect of
the screening process. Temperature cycling provides the additional
advantage of a uniform stress environment when air flow across the
product is tightly controlled. All areas of the product must be
subjected to an equal amount of stress throughout the screen
profile. Some other methods of screening do not offer this
uniformity across the product
2. Standards Implemented and Met
● GB-2423.1-2008(IEC68-2-1) test A: low-temperature test
● GB-2423.2-2008(IEC68-2-2) test B: high-temperature test
● GJB360.8-2009(MIL-STD.202F) Life of high temperature test
● GJBl50.3-2009(MIL-STD-810D) high-temperature test
● GJBl50.4-2009(MIL-STD-810D) low-temperature test
● GB2423.3-2008(IEC68-2-3) test Ca: constant damp heat test
● GB2423.4-2008(IEC68-2—30) test Db: Alternating hot and humid test method.
● GJBl50.9-2009(MIL-STD-810D) Damp heat test method.
3. Specifications
■Specifications | Note: 1. We reserve the right to change specifications without prior notice 2. Customized sizes and configurations available | ||||||||||||
Model | ESS-SL | ESS-LL | |||||||||||
225 SL5 | 225 SL10 | 408SL5 | 408 SL10 | 1000 SL5 | 1000 SL10 | 1000S L15 | 225LL5 | 225 LL10 | 408LL5 | 408 LL10 | 1000LL5 | 1000 LL10 | |
Working Chamber Volume(L) | 225 | 408 | 1000 | 225 | 408 | 1000 | |||||||
Temp Rate of Change( ℃/Min) | 5 | 10 | 5 | 10 | 5 | 10 | 15 | 5 | 10 | 5 | 10 | 5 | 10 |
Performance | -70℃~+100℃ | -70℃~+100℃ | |||||||||||
Rapid Temp Change -55℃~+85℃ Full Linear Control | Rapid Temp Change -40℃~+85℃ Full Linear Control | ||||||||||||
Humidity Constancy | ±0.5℃ | ||||||||||||
Temp Constancy | ±3.0℃ | ||||||||||||
Exterior Material | Cold-rolled steel sheet (Rust proof & Plastic Spray treated )/ Stainless Steel | ||||||||||||
Interior Material | Stainless Steel Plate(SUS 304) | ||||||||||||
Insulation Material | Rigid Polyurethane Foam | ||||||||||||
Safety Devices | over pressure,over heat and over current protection for compressor, over temp. protection, | ||||||||||||
Compressor | Semi-Hermetic Compressor | ||||||||||||
Cooling Mode | Water Cooled | ||||||||||||
Control system | Balanced Temperature & Humidity Control System(BTC type) | ||||||||||||
Heater | Iron-chrome wire heater | ||||||||||||
Blower | Centrifugal Blower | ||||||||||||
Observation Window | Glass incorporating heat generator | ||||||||||||
Temp Sensor | Pt-100 | ||||||||||||
Controller | Touch screen programmable controller | ||||||||||||
Ambient Temp. | +5℃~+35℃ | ||||||||||||
Power | AC 380V/50Hz 3phase 5 wires+ Ground wire | ||||||||||||
Note: 1. We reserve the right to change specifications without prior notice 2. Customized sizes and configurations available |
4. Applications:
4.1 A. Who want his products more reliable in different
environmental conditions
B. Who plan to make the world a better place with his high quality
and reliability products
4.2 Location: Lab, testing center,
4.3 Note:
Temperature adaptability test under the condition of rapid change, or gradient for electrical, electronic, instruments and other products or spare parts, particularly applies to environmental stress screening test(ESS)
5. Material:
Interior material: Stainless Steel Plate SUS304#
Exterior material: Baked Painting Steel Plate or Stainless Steel SUS304#
Insulation material: Rigid polyurethane Foam and Glass Fiber Wool