The reliability of electronic and electrical products often depends on their ability to operate stably in extreme environments. From laboratory to market, from research and development to after-sales service,Programmable high and low temperature testing machineBy simulating temperature and humidity alternating environments, it becomes a validated product“environmental adaptability”The core tool. This article will delve into its typical applications in communication equipment, industrial control, and other fields, and explore how to choose suitable experimental equipment.

1、 Communication equipment:5Gof the era“Environmental Adaptation Revolution”

5GCommunication equipment such as base stations, optical modules, and routers need to operate outdoors for a long time, facing multiple challenges such as high temperature, low temperature, and humidity. The application of high and low temperature testing machines focuses on three major scenarios:

High temperature working test（55℃continuous72Hour):

Check whether the speed of the cooling fan and the junction temperature of the chip exceed the standard to avoid signal interruption caused by overheating.

Case: A certain5GThe base station optical module experienced signal attenuation during high temperature testing, and it was found that the internal adhesive of the optical cable connector was thermally decomposed. After using high temperature resistant silicone, it passed the test.

Low temperature storage test（-55℃place24Hour):

verifyPCBCheck if the solder joints on the board are brittle and ensure that the equipment can still start normally after storage in extremely cold areas.

Rapid temperature change test（5℃/minSpeed from-40℃Rise to85℃）：

Simulate outdoor environments with large temperature differences between day and night, and detect the impact of material thermal expansion and contraction on structures.

2、 Industrial Control: In Extreme Environments“stable operation”

PLCIndustrial equipment such as controllers, frequency converters, and sensors need to operate in complex environments such as factories and mines for a long time, and their testing focuses include:

Wide temperature working test（-20℃～70℃Phased testing):

verifyI/OThe signal transmission stability of the interface avoids control errors caused by temperature fluctuations.

Constant Damp Heat Test（40℃/93% RH）：

Detect corrosion of metal contacts, optimize anti rust coatings, and extend equipment lifespan.

Composite stress testing (temperature and humidity)+Electromagnetic interference):

Simulate the multi factor coupling environment of industrial sites to ensure the reliability of equipment under complex working conditions.

Case: A certain factoryPLCFrequent crashes in humid environments were found during high and low temperature tests to be caused by terminal block condensation leading to short circuits. After installing a heating and dehumidification module, the problem was resolved.

3、 How to choose a suitable testing machine? Three key decision-making points

Temperature range matching:

Consumer Electronics Selection-40℃～150℃Automotive electronics demand-70℃～150℃(Battery pack testing).

avoid“Big horse pulling small car”Oversized equipment increases procurement costs.

Controller functional requirements:

Simple Experiment SelectionTEMI300Button type controller; Complex programs (such as100Duan Wenbian needs toOYO9256PColor touch screen.

Confirm if it supportsUSBData export orLIMSSystem integration.

Reliability of refrigeration system:

When conducting frequent low-temperature tests, priority should be given to using the German Bitzer semi enclosed compressor (with a lifespan)≥10Year).

Check the type of refrigerant and avoid using those that are about to be bannedR22Waiting for material.

4、 Future Trends: Intelligence and Greening

With the increasing demand for quality in the electronic and electrical industry, programmable high and low temperature testing machines are developing in two directions:

Intelligence: Through IoT technology, remote monitoring and fault warning can be achieved, combined withAIAlgorithm optimization testing program.

Greening: adopting lowerGWPRefrigerants with global warming potential, such asR1234yfReduce environmental impact.

Conclusion

Programmable high and low temperature testing machines are not only used for electronic and electrical products“Environmental Adaptability Coach”It is also a key investment for enterprises to improve quality and reduce risks. In5GUnder the background of rapid development of new energy vehicles, industrial Internet and other emerging fields, selecting a testing machine with reliable performance and matching functions will provide a solid guarantee for enterprises to win market competitiveness.