We operate, today, in a market in which products seem apparently the same and the competition to gain customers’ loyalty is played on the quality and reliability fields. The stress screening tests help manufacturers increase the reliability of their products.
ESS tests consist in exposing specimens to thermic and climatic stresses to force latent defects arise and intervene in the production phase accordingly to increase quality.
The stress screening tests ensure that the problems, which normally arise during the useful life of the product, are discovered during the testing phase before the production starts.
The Discovery ESS “speedy” chamber series was developed to help manufacturers detecting product defects and production flaws. Screening can force infancy board and component failures that would otherwise occur after final assembly and product delivery, and potentially during the warranty period.
Two versions are available, according to the temperature rate of change (10°C/min and 15°C/min).
| ESS Improves | ESS Reduces | |
|---|---|---|
| Product quality | Fields defect | |
| Product reliability | Warranty costs | |
| Production throughput | Time to market | |
| Profit margins | Early failure on field | |
| Customer satisfaction | Manufacturing costs | |
| ESS VERSION | ESS VERSION |
|---|---|
| CLIMATIC AND THERMOSTATIC MODELS | CLIMATIC AND THERMOSTATIC MODELS |
| T range -75/+180°C | T range -75/+180°C |
| 10 K/min | 15 K/min |
| DM250 C (T) 10 ESS DM500 C (T) 10 ESS DM1000 C (T) 10 ESS DM1400 C (T) 10 ESS |
DM250 C (T) 15 ESS DM500 C (T) 15 ESS DM1000 C (T) 15 ESS DM1400 C (T) 15 ESS |
Please click on the following link to open the DM ESS Datasheet.
Control and management system and interfaces
Controlled by PLC and Advanced HMI
Remote access
There is a wide range of possibilities thanks to the built-in MyKratos™ and MyAngel24™; multichamber control also available upon request
Electromagnetic closing system
Ensures the security of environmental tests
Air treatment system
Ensures a precise control of the climatic parameters inside the chamber with minimal thermal inertia; an axial fan allows rapid temperature variations of both air and specimen.
Humidification system (only climatic version)
The humidifier with a self-contained heater and dedicated controlling S/W offers two great advantages:
- it does not require distilled or demineralised water to operate properly
- it uses ‘dry’ vapour in order to avoid condensation on the specimens and to reproduce real environmental conditions
Environmental Stress Screening (ESS)
Environmental Stress Screening (ESS) is a process of exposing a product to stresses by fast temperature changing rate in order to force latent defects to manifest themselves.
Stress screening ensures that defects, which normally arise during the useful life of a product, are discovered during testing prior to the pre-production phase.
System includes the following components:
Mechanical cooling based on single stage system (-40°C) or cascade systems (–70°C). The cooling system is realized with semi-hermetic alternative type compressors including an automatic injection-type protection system. This protects the compressors when they are cooling down from high temperatures.
The chamber is heated by means of electrical heaters, protected by safe thermostats that disconnect overall chamber main power components (such as compressors, fans and heaters) in case of accidental over-temperature.
Direct humidification occurs through an electrical vapour humidifier.
The chamber is equipped with a water storage tank (about 18 l capacity) and a water connection on the back of the chamber for automatic refilling.
There are three ways to ensure the water supply needed for any kind of climatic tests:
In order to reduce water consumption, water recycling can be activated through a button on the control panel (only possible when the specimen does not contaminate the water during the test).
Dehumidification is performed by the condensation cooler (dew point cooler) directly connected to the refrigeration circuit. This principle permits high stability of parameters in conjunction with energy-efficient dehumidification.
Temperature Measurement with Pt100 thermal probe Class A, max precision 0,3K.
Relative humidity measurement with Assmann psychrometric system complete with Pt100 thermal probes.
Relative Humidity range from 10% to 98% within the temperature range [+10°C; +95°C].
Dew Point range:
The values refer to the basic version at ambient temperature of +22°C, with temperature and humidity measurement made in the air inlet.
The chamber is equipped with a PLC (Programmable Logic Controller) for managing all the chamber’s functions and safety interlocks. The HMI system consists of a 10'' on-board panel and a remote control via mobile and desktop devices. MyKratos™ software (including MyAngel24™ Interactive Assistance System), is available both from the on the on-board panel and remote devices with the same user-friendly graphical interface.
On-Board Panel: 10'' Touch Panel, 16 M colours with a touch menu with related pop up screens, allowing the control of all the chamber functions.
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