Overview of Equipment
The Highly Accelerated Stress Test Chamber has been primarily developed to conduct bias testing which applies constant voltage and signals. The standard equipment features two control modes: [unsaturated control] and [wet saturated control], while the M-type chamber additionally offers a [wet and dry bulb temperature control] mode.
The M-type chamber conforms to the IEC60068-2-66 standard.

Ease of operation
Interior is expanded for easier loading of a large specimen.
5.7-inch color LCD touch panel
Chambers can be operated from PC and tablet.
Automatic water supply
The amount of water required by the humidifying heater for a test is automatically supplied from the water tank.
10 patterns program setting
Color coding for easy connection
12 specimen signal terminal pins (more available as option)
Specifications
Model Temperature, humidity and pressure range Inside/Outside
dimensions(mm)
EHS-212 ＋105.0 to ＋142.9℃ / 75 to 100％rh /
0.020 to 0.196MPa（Gauge） φ294×L318 /
W640×H1483×D850
EHS-212M
EHS-212MD φ294×L318×2 /
W760×H1796×D1000
EHS-222 φ394×L426 /
W740×H1553×D1000
EHS-222M
EHS-222MD φ394×L426×2 /
W860×H1796×D1000
EHS-412 ＋105.0 to ＋162.2℃ / 75 to 100％rh /
0.020 to 0.392MPa（Gauge） φ294×L318 /
W640×H1483×D850
EHS-412M
EHS-412MD φ294×L318×2 /
W760×H1796×D1000
Air-HAST
Reproduction of near-constant temperature and humidity
testing environment with Air-HAST (option for M/MD type only)
根据试样的不同，不仅水蒸气，而且氧化和其他试样表面条件都可能导致失效。
通过将空气留在测试区域，Air-HAST 功能将空气添加到高温、高湿度和加压环境中，以便有效地加速测试空气中氧气影响降解的试样，例如表面氧化。（某些标本可能看不到加速度。



Whisker humidity-resistance evaluation testing (Japanese patent No. 5066143)
安装板晶须评估的评估示例有限。造成这种情况的主要原因之一是因为测试时间可能长达 1000 或 3000 小时。
为了缩短测试时间，爱斯佩克使用Air-HAST对安装板进行无铅焊须评估。结果证实了在85°C和85%rh湿度下进行测试的加速效应。
Accelerated testing examples for whisker evaluation
Temperature cycling test -40°C ↔ +85°C 3000 cycles
High temperature and high humidity test +55°C / +85%rh 3000 hours
+85°C / +85%rh 1000 hours
Air-HAST +110°C / +85%rh 200 hours