The Services of Constant Temperature and Humidity
Experiment in PSI-CN

Author: Luke Lee
Constant temperature and humidity, as the name implies, it is that the equipments used various performance in every conditions. This is called constant temperature and humidity test machine, constant temperature and humidity experiment box, temperature chamber or constant temperature constant wet box. These machines are mainly used to detect the performance of the materials for heat-resistance, cold-resistance, dry-resistance, andhumidity resistance in various kinds of environment. They are suitable for testing the product quality of electronics, electrical appliances, communications, plastic products, metal, medical, and aerospace materials.
In 2010, PSI bought a constant temperature and humidity testing machine in need of our products. The specification is listed below: The temperature ranges from -40 ℃ to + 150 ℃, the temperature fluctuation range is ±0.5 ℃. The temperature uniformity range is ± 2 ℃. The humidity ranges from25% to 98% R/H. The humidity volatility is ±2% R/H. At present, according to the features of our products and the specified requirements of customers, PSI-CN has the reliability test. Instructions of the machines are followed strictly. And we actively offer services to customers. For example, PSI-CN helped a new customer whose products were on pilot-run. The customer did not require PSI-CN do the reliability test. However, PSI-CN provided the test for free according to the product features and our experience. We then found an abnormal function after the electrical test. So PSI-CN reported the test result to the customer, and the customer realized that they had neglected this point when they were designing the product. PSI-CN’s actions helped the customer to save significant losses. And PSI-CN got the customers’ long-term cooperation and trust.
In addition, the constant temperature and humidity test machine of PSI can also provide the outward service. We will charge in strict accordance with the standards of the relevant industry, and provide preferential service. Moreover, salesman will introduce these services to customers when their products are going on the trial run production. During these years, the service of reliability test plays an important role for improving the quality. And it wins much praise and trust from many customers which have got the regular production services and reliability test services from PSI. We provide assurance of quality and get the praise. At the same time, this kind of service provides a worthy stop for the customers when they are visiting PSI.
Finally, we’d like to give you some small notifications:
  1. Please turn the power on only when using the machine. And turn the power off in time after finishing the action. So the life time of the equipment can be extended effectively.
  2. Constant temperature and humidity box requires certain quality of water. So we should focus on the water quality, guaranteeing the accuracy of the test result.
  3. Please don't switch the refrigerating units on and off within five minutes. Switching on and off the compressor frequently is prohibited.