Understand and purchase precautions for thermal shock test c
2020-08-18
、What are the uses of the thermal shock test box?
The thermal shock test box is suitable for the safety performance test of electronic components and provides reliability tests, product screening tests, etc. At the same time, passing this equipment test can improve product reliability and product quality control.
Second, how to choose a thermal shock test box?
1. Impact temperature: The impact temperature refers to the maximum range of temperature that the test area can actually rise and fall to. Note that it is not the limit temperature of the preheating and precooling rooms.
2. Test load: This parameter directly affects how many test items can be placed.
3. Recovery time: refers to the time it takes for the test piece to switch from one temperature point to another. Common standards stipulate ≤5min.
4. Defrosting time: the longer the defrosting interval, the better. Nowadays, some manufacturers can defrost once 1000 cycles, which is very ideal. The shorter the defrost interval, the worse the air tightness of the equipment!
5. Sensor placement location: the specification requires that the sensor must be placed inside the test area. Some manufacturers place the sensor inside the air duct, although the distance from the test area is only 10cm, the energy difference is quite large. And it cannot truly reflect the temperature change on the surface of the test workpiece.
3. How about after-sales service for purchasing a thermal shock test box?
1. The thermal shock test chamber produced and sold by Zhongtian Instruments is delivered to the door strictly according to the order date, and technicians are sent to install and debug on site for free, and the operator will be trained for free until the operator can operate independently.
2. For the thermal shock test chambers produced and sold by our company, Zhongtian instruments are guaranteed for one year free of charge (from the date of installation and acceptance), and spare parts and after-sales service are provided for 48 hours for life.
3. After the equipment warranty period, if there is any failure in the thermal shock test chamber, after informing our company, the technician will come to the service and charge only the cost.
