Humidity Test Chamber

• Selection of the installation site of the rapid temperature change test chambe

  Jun 27, 2025

  Selection of the installation site of the rapid temperature change test chamber: The distance from the adjacent wall can smoothly give full play to the role and characteristics of the environmental test chamber. The long-term temperature of 15 ~ 45 °C and the relative environmental humidity exceeding 86% should be selected. site. The working temperature of the installation site must not change significantly.  It should be installed on a leveling surface (use a level to determine the level on the road during installation). It should be installed in a site without sun exposure.  It should be installed in a site with excellent natural ventilation. It should be installed in areas where flammable materials, explosive products and high-temperature heat sources are eliminated. It should be installed in a site with less dust. Install it as close as possible to the switching power supply of the power supply system.

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• What should I do if the high and low temperature test chamber has problems?

  Jun 23, 2025

  High and low temperature test chamber may encounter a variety of problems in the process of use, the following is a summary of potential faults and their causes from different perspectives: 1. Core system failure Temperature out of control Reason: PID control parameters are out of balance, ambient temperature exceeds the design range of the equipment, multi-zone temperature interference. Case: In a special environment workshop, the external high temperature causes the refrigeration system to overload, resulting in temperature drift. Humidity is abnormal Reason: poor water quality of humidification leads to scaling and nozzle blockage, failure of ultrasonic humidifier piezoelectric sheet, and incomplete regeneration of dehumidification desiccant. Special phenomenon: reverse condensation occurs during high humidity test, resulting in the actual humidity in the box being lower than the set value. 2. Mechanical and structural problems Air flow is disorganized Performance: There is a temperature gradient of more than 3℃ in the sample area. Root cause: the customized sample rack changed the original design air duct and the accumulation of dirt on the centrifugal fan blade led to the destruction of dynamic balance.  sealing failure New failure: the magnetic force of electromagnetic sealing door decreases at low temperature, and the silicone sealing strip becomes brittle and cracks after-70℃. 3. Electrical and control system Intelligent control failure Software level: After firmware upgrade, the temperature dead zone setting error occurs and the historical data overflow causes the program to crash. Hardware level: SSR solid state relay breakdown causes continuous heating and bus communication is subjected to inverter electromagnetic interference. Security protection vulnerabilities Hidden dangers: the synchronous failure of the triple temperature protection relay and the false alarm caused by the expiration of the refrigerant detector calibration. 4. Challenges of special working conditions Specific temperature shock Problem: -40℃ to +150℃ rapid conversion of the evaporator weld stress cracking, thermal expansion coefficient difference resulting in the failure of the observation window seal. Long-term operation attenuation Performance degradation: after 2000 hours of continuous operation, the compressor valve plate wear leads to a decrease of 15% in refrigeration capacity and drift of ceramic heating tube resistance value. 5. Environmental and maintenance impact Infrastructure adaptation Case: The power oscillation of PTC heater caused by the fluctuation of power supply voltage and the water hammer effect of cooling water system damaged the plate heat exchanger. Preventive maintenance blind spots Lesson: Ignoring the positive pressure of the box leads to water entering the bearing chamber and biofilm growth and blockage in the condensate discharge pipe. 6. Pain points of emerging technologies New refrigerant application Challenges: system oil compatibility problems after R448A replaces R404A, and high pressure sealing problems of subcritical CO₂ refrigeration systems. IoT integration risks Fault: The remote control protocol is maliciously attacked, resulting in program tampering and cloud storage failure, resulting in the loss of test evidence chain. Strategy recommendations Intelligent diagnosis: configure vibration analyzer to predict the failure of compressor bearing, and use infrared thermal imager to scan the electrical connection points regularly. Reliability design: key components such as evaporator are made of SUS316L stainless steel to improve corrosion resistance, and redundant temperature control modules are added to the control system. Maintenance innovation: implement a dynamic maintenance plan based on operating hours, and establish an annual refrigerant purity testing system。 The solutions to these problems need to be analyzed in combination with the specific model of the equipment, the use environment and the maintenance history. It is recommended to establish a collaborative maintenance mechanism including the OEM of the equipment, third-party testing institutions and user technical teams. For key test items, it is recommended to configure a dual-machine hot standby system to ensure the continuity of testing.  

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• What are the delivery standards of Lab Companion?

  Jun 23, 2025

  (1) Equipment installation and commissioning On-site service: technical personnel will deliver the goods free of charge and complete the mechanical assembly, electrical wiring and debugging. The debugging parameters shall meet the temperature and humidity, salt spray deposition amount and other indicators in the customer's technical agreement. Acceptance criteria: provide a third-party measurement report, and unqualified equipment shall be returned or replaced directly. For example, the rain test box shall pass 100% acceptance. (2) Customer training system Operation training: covers equipment start and stop, program setting and daily maintenance, customized for different user scenarios such as quality inspection institutions and automobile enterprises. Deep maintenance training: including fault diagnosis (such as troubleshooting of humidity system in high and low temperature and humidity test chamber) and spare parts replacement to improve customers' independent maintenance ability. (3) Technical support and response Instant response: respond to repair demand within 15 minutes, and solve routine faults within 48 hours (negotiate with remote areas). Remote diagnosis: through video guidance or remote access software, quickly locate the problem (such as abnormal dust concentration in the sand test chamber). (4) Spare parts supply and maintenance Make spare parts plan, give priority to the supply of wear and tear parts from cooperative units (such as China Railway Inspection and Certification Center, China Electronics Technology Group), and reduce downtime. Non-manual damage is free of charge during the warranty period, and paid services are provided after the warranty period with transparent charges.

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• Environmental Testing of Rechargeable Battery

  Feb 21, 2025

  Rechargeable battery, which can be re-active by charging after be used. They are widely used in the fields of environmentally friendly vehicles, power storage, and Dynamic field. Environmental testing of rechargeable battery is an important means of evaluating their performance under different environmental conditions. Ⅰ.  Testing Purpose The environmental testing of rechargeable battery aims to simulate various conditions that may be encountered in actual usage environments to evaluate the reliability and performance of the battery. Through testing, it is possible to understand the conditions of working battery under different temperature, humidity, vibration, impact and other conditions, providing scientific basis for the research and development, production and use of battery. Ⅱ.  Testing content A. Temperature testing a. High temperature test: Rich a high temperature environment to observe its temperature stability and the risk of thermal runaway. b. Low temperature testing: Testing the discharge performance, capacity degradation, and low-temperature starting ability of the battery under low temperature conditions. c. Temperature cycling test: Simulate the temperature changes that the battery may experience in actual use, evaluate its thermal durability and cycle life. B. Humidity test: Evaluate the battery’s performance, sealing, and corrosion resistance in a humid environments. C. Vibration testing: Through simulate the battery in the vibration environment that may encounter during transportation, installation, and use, evaluate its structural integrity, electrical connection reliability, and performance stability. D. Impact testing: Through simulating the battery in unexpected situations such as drops and collisions, and evaluate their impact resistance. E. External short circuit test: Test the performance of the battery under external short circuit conditions, including risks of thermal runaway and explosion and so on. Ⅲ. Test standards and specifications The environmental testing of rechargeable battery should follow relevant testing standards and specifications to ensure the accuracy and comparability of test results. Common testing standards include: IEC 62133/ IEC 61960、UN 38.3、UL 1642/UL 2580、GB/T 31467、JIS C 8714 Ⅳ. Test equipment Environmental testing on rechargeable battery requires the professional testing equipment and methods. Common testing equipment includes： High and low temperature test chamber: Used to simulate different temperature environments. Humidity test chamber: used to evaluate the performance of battery in humid environments. Vibration test bench: Simulate vibration environment to evaluate the structural integrity and performance stability of battery. Impact testing machine: used to simulate impacts in unexpected situations such as drops and collisions. Ⅴ. Test results and evaluation After completing the test, it is necessary to analyze and evaluate the test results. Based on test data and standard requirements, determine whether the performance of the battery meets the requirements under different environmental conditions. For undesirable battery, further analysis and corresponding improvement measures should be taken. In summary, environmental testing of rechargeable battery is an important means to ensure their stable and reliable performance in practical use. Professional testing instruments can provide more professional, safe, scientific and effective experimental results for rechargeable battery testing, greatly reducing the cost of testing and bringing convenience to companies. Click to check related products.   https://www.lab-companion.com/thermal-shock-test-chamber https://www.lab-companion.com/temperature-and-humidity-chamber https://www.lab-companion.com/rapid-temperature-cycling-test-chamber    

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• Introduction to the Solar Simulation Radiation Test Chamber

  Oct 16, 2024

  Introduction to the Solar Simulation Radiation Test Chamber The solar simulation irradiation test chamber, also known as the "solar radiation protection test device", is divided into three types according to the test standards and methods: air-cooled xenon lamp (LP/SN-500), water-cooled xenon lamp (LP/SN-500), and desktop xenon lamp (TXE). The difference lies in the temperature, humidity, accuracy, time, etc. of the test. It is an indispensable testing instrument in the aging test chamber series. The test chamber uses an artificial light source combined with a G7 OUTDOOR filter to adjust the system light source to meet the requirements of IEC61646 for solar simulators by simulating the radiation in natural sunlight. The above system light source is used to conduct the IEC61646 photoaging test on the solar cell module, and the temperature on the back of the module needs to be constantly controlled between 50 ± 10oC during the test. Can automatically monitor temperature; Configure a radiometer to control the irradiance of light, ensuring it remains stable at a specified level, while also controlling the testing time. During the ultraviolet light cycle period in the solar simulation irradiation test chamber, photochemical reactions are usually not sensitive to temperature. But the rate of any subsequent reaction depends on the temperature. The rate of these reactions accelerates with increasing temperature. Therefore, controlling the temperature during UV exposure is crucial. In addition, it is necessary to ensure that the temperature of the accelerated aging test is consistent with the highest temperature at which the material is directly exposed to sunlight. In the solar simulation irradiation test chamber, the UV exposure temperature can be set at any temperature between 50 ℃ and 80 ℃ based on the illuminance and ambient temperature. The UV exposure temperature is adjusted by a sensitive temperature controller and blower system to achieve excellent uniformity in the temperature of this test chamber. Dear customer: Hello, our company is a high-quality development team with strong technical strength, providing high-quality products, complete solutions, and excellent technical services to our customers. The main products include walk-in constant temperature and humidity testing chambers, UV accelerated aging testing machines, rapid temperature change testing chambers, walk-in environmental testing chambers, UV aging testers, constant temperature and humidity chambers, etc. Our company adheres to the principle of building a business with integrity, maintaining quality, and striving for progress. With a more determined pace, we continuously climb new heights and contribute to the national automation industry. We welcome new and old customers to confidently choose the products they like. We will serve you wholeheartedly!

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