Thermal shock tests serve to test the specimen behavior when it is subjected to extreme temperature conditions. In these cases, the specimen can cool or heat at different speeds and at different points, depending on the material it is made from. If exposure to the repeated thermal cycles corresponds to large expansions and contractions in volume, or if the thermal shock that the product undergoes is greater than the maximum resistance of the material(s) from which it is made, it could be subjected to strong mechanical tensions or to the breakage.
Under normal operating conditions, the same type of failure could occur over a much longer time; therefore the purposes of thermal shock tests include those of bringing to light the defective components that are subject to early failure, or to show defects in the production processes, in order to make the changes necessary for the product optimization.
The chamber is made up of two test compartments:
• The hot chamber is equipped with an air treatment system complete with: fan, heaters, temperature sensor and thermostat.
• The cold chamber is equipped with an air treatment complete system with: fan, heaters, evaporator, temperature sensor and thermostat.
The qualification of the chamber was performed in accordance with the strict standards of the MIL-STD-883H method 1010.8.
The “basket” in which the products to be tested are placed is moved electrically from one compartment to the other by a motorized worm drive system; this mechanism ensures a high transfer speed and significantly reduced vibrations while the specimen is being moved from one chamber to the other. During the transfer the specimen is subjected to a thermal shock according to the thermal profile temperatures that have been set.
2) 1 light grid internal shelf (maximum load 8 kg evenly distributed)
3) Free PT100 sensor inside the basket for temperature monitoring and protection of the specimen (protection is ensured by an independent max/min digital thermostat)
Angelantoni Test Technologies introduces the new concept of compressor stand-by mode (patent pending technology) which allow a more efficient management of pressures upstream and downstream of the compressor, producing a better control of the cooling capacity and a reduction of the mechanical effort. The resulting benefits are:
• Up to 20% reduction of energy consumption
• Up to 50% noise reduction
• Increased system reliability
• Improved temperature regulation
Compressor stand-by mode: the compressor works in “reduced effort” conditions during the phases in which cooling capacity is not requested. Total stand-by times can even reach 70% of the total time of a climate cycle.
In order to comply with European Regulation 517/2014, on Fluorinated gas (F-Gas) emissions, the new CST130/2T "spinner" has been equipped with the new R449A refrigerant gas.
The new ecological refrigerant used in the high stage of the cascade refrigeration system has a low global warming potential (GWP) of just 1,397 and is in line with the EU Regulation.
Special attention was paid to consumptions. Thanks to a series of complex software algorithms, intelligent resistances control allows the reduction of absorption peaks guaranteeing lower energy consumption.
Greater precision thanks to the Pre-Conditioning phase which allows to obtain cycles matching the exact thermal profile set and to the Post-Conditioning phase which allows the specimen to be moved more quickly at the end of the test cycle.
The introduction of compressed air drying columns has made it possible to improve the performance of the chamber in terms of productivity. This system allows to set cycles for long-term tests without resorting to defrosting.
Electronic and remote setting of On/Off solenoid valves. The electronic control allows to obtain more repeatable results while the remote setting allows to optimize the valves setting without resorting to on-site interventions.
MyKratos™ is the management control software embedded on the machine in a dedicated, totally integrated hardware module and include the interactive assistance system MyAngel24™. The ACS software allow to control and manage all the chamber's functions. It requires no installation and it is accessible from: operator panel, PC via browser web or via the free APP developed for mobile devices.
The innovative services developed to meet the needs of our customers allow to manage and monitor the operating conditions of the ACS chamber anywhere and at any time.
The operator will receive periodically the report of the activities of the room, containing the graphs of the tests carried out in the previous period.
Flexibility: The frequency of receipt of reports is customizable, for maximum flexibility.
Time saving: Automatic sending of reports facilitates the work of the operator.
The system automatically sends alerts to the Angelantoni Service and, if requested, also sends them to the operator.
Remote Support: Angelantoni supports the customer by operating remotely on the chamber.
Less on-site intervention:
Angelantoni Service remotely changes PID parameters and PLC programs.
The Angelantoni Service identifies the problem and solves it, when possible remotely or by planning an on-site intervention.
Reduced chamber downtime:
Preventive planning of maintenance operations.
Utmost efficient on-site intervention: Savings on maintenance times and costs.