ESS Testing Water Circuit Seperate Design High Low Temperature
ESS traditionally increases product reliability four times that of unscreened electronics.
What is ESS?
Environmental Stress Screening (ESS) is a means of screening electronic assemblies at the most cost-effective point of manufacture to expose defects that can't be detected by visual inspection or electrical testing. These defects are typically related to defective parts or workmanship and are normally found as early field failures.
1. Explore Temperature Chambers by KOMEG Different Series:
KMT-R Series, KMT-L Series, KMT-S Series
Simulate high and low temperature environments in Associated
Environmental Systems bench top or floor model temperature
1) Working volume from 64 to 1000 cubic L.
2) Conform to commercial and military standards for high and low
3) Self-contained single-stage refrigeration systems support low
temperatures to -158°F / -70°C.
4) Two-stage cascade refrigeration systems support low temperatures
to -140°F/-60°C. The two separate closed refrigerant circuits each
use a different refrigerant with its own compressor.
2. High temperature limits of test chambers
There are many types of test chambers, but they all high and low
temperature limits. Let's take a look at the typical high
temperatures thresholds and why they exist.
Test chambers usually have wire heaters made of a material called
Nichrome. By placing successive loops of heater wire, a greater
amount of heat that is generated. The result looks a lot like the
inside of a toaster. Fans circulate the air past the heaters, so
the samples in the chamber are not exposed to radiant heat. It is
very easy to add heaters and increase the speed and / or high limit
of a chamber.
KOMEG chambers typically have a high temperature limits under
200°C. Here is a break-down of why a chamber's high temperature
150°C: There are two reasons we may limit a chamber to 150°C. First, there
may be a limitation of the materials used inside the chamber.
Secondly, for extremely fast chambers, we may limit the high
temperature to avoid problems with accidentally tripping overheat
170-180°C: Most models stop at this temperature range. There is a risk of
burning the oil inside the refrigeration's cooling coil.
3. Parameter Specifications:
|150L chamber volume|
|Temp. range||-40°C ～150°C|
|Temperature stability||High±0.5°C ,low ±1.0°C|
|Heat up time||-40°C ～+100°C,within 45 min|
|Pull down time||+20°C ～-40°C,within 60 min|
|Interior Dimension(mm)||W 600 x H 600 x D 460mm|
|Exterior Dimension(mm)||W 880 x H 1730 x D 1400mm|
|Interior material||Stainless Steel Plate ( SUS 304)|
|Exterior material||Baked Painting Steel Or Stainless steel ( SUS304)|
|Insulation material||Rigid polyurethane Foam and Glass Fiber Wool|
|Total power||7KW(heater 3KW included)|
|Ambient Temp.||+5°C ～+35°C|
|Power Supply|| ||AC 380V±10％ 50Hz ,3 phase 4 wires +Ground Wires|
|Sight window size||370 X 450mm|
|Sample holder||2 pcs|
|Fittings||cable port(portΦ50mm)*1, chamber lamp*1, power cable *2m|
|Safety device (standard)|
No fuse breaker,over pressure,over heat&over current
protect, over load protect for blower, dry heat protect
|Control System||Balanced Temperature & Humidity Control (BTHC)System|
|Refrigeration system||Air Cooled (Water Cooled is option)|
Single stage refrigeration system,
|Controller||7-inch LCD Touch Screen panel|
|Operation model :Program or fix point running|
|Memory capacity :120programs,1200steps,|
|All repeat 999 cycles, part repeat 99 cycles|
Note: 1. We reserve the right to change specifications without
prior notice 2. Customized sizes and configurations available
4. Factory Tour --- Why KOMEG IS Your Right Choice?
Specialized in climatic test chamber since 1990
Main parts are imported famouse brand like Tecumseh, Danfoss,
Passed ,CE,TUV,etc. third party certification
Recognized by Global 500 Enterprises like EMERSON, SIEMENS,
Minolta, Epson, HUAWEI, TCL,etc
Environmental friendly, low energy consumption and easy maintenance
High cost-effective and steady delivery time
Experienced and trained staffs assure good service