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• Lab Dust Free Oven Environmental Test Condition

  Oct 11, 2025

  Internal environmental conditions Benchmark cleanliness: At the beginning of the test, the chamber must reach the highest cleanliness level it claims (such as ISO Class 5 / Class 100). This is the premise of all tests. Before the test, the oven needs to run a long period of "self-cleaning" until the particle count shows that the concentration is stable below the standard for multiple consecutive times. Temperature and Humidity: Although the oven is a heating device, its initial state needs to be clearly defined. The initial environment for testing is usually normal temperature and humidity, for example, a temperature of 20±5°C and a relative humidity of 30-60% RH. This is crucial for testing the heating time and temperature uniformity. If the process has requirements for the dew point of the environment, it may be necessary to record the initial absolute humidity. Airflow state: The test should be conducted under the specified airflow pattern, typically in a vertical or horizontal laminar flow state. The fan must operate at the rated speed, with stable air pressure and air volume. Test load: The test is divided into two conditions: no-load and full-load. No-load is the benchmark test for equipment performance. Fill the effective working space with a fully loaded simulated load (such as metal, pallets, etc.) to simulate the harshest working conditions. Full-load testing can truly reflect the impact of products on air flow and temperature fields in actual production.   External environmental conditions 1. The cleanliness level of the external environment must be lower than or equal to the cleanliness level designed by the oven itself. For instance, when testing an oven of Class 100, it is best to do it in a room of Class 1000 or cleaner. If the external environment is too dirty, it will seriously interfere with the measurement results of the internal cleanliness of the oven when opening and closing the door or when water seeps through gaps. 2. The laboratory requires a stable temperature and humidity environment. It is generally recommended to conduct the test under standard laboratory conditions, such as 23±2°C and 50±10% RH. Avoid testing in extreme or highly volatile environments. 3. The test area should be free of strong convective winds and it is best to maintain a slight positive pressure to prevent external contaminants from entering the test area. 4. The power supply voltage and frequency should be stable within the range required by the equipment. 5. The equipment should be placed on a ground or base with less vibration. There are no large stamping equipment, fans or other strong vibration sources around.   When testing a dust-free oven, controlling the external environment is as important as measuring the internal environment. An unstable, dirty or strongly interfering external environment can lead to distorted test data and fail to truly reflect the performance of the equipment. All test conditions should be clearly recorded in the final verification report to ensure the traceability and repeatability of the tests.

  hot Tags : Industrial Oven Environmental Testing Equipment Precision Oven Dust Free Oven Clean Oven Industrial Clean Oven

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• Walk-in Temperature Test chambers Packaging and transportation Requirements

  Oct 08, 2025

  Before designing a packaging and transportation plan, it is necessary to first understand the characteristics of the equipment and the potential risks it faces: Firstly, the equipment is usually large in size (tens of cubic meters) and can weigh several tons. This determines that its transportation falls within the category of large item logistics. Meanwhile, the foam insulation layer of the box body is vulnerable to bumps and cuts, and the surface spraying is afraid of scratches and depressions. Refrigeration units such as compressors, evaporators and condensers are afraid of severe vibration and tilting. The electrical control system and sensors are afraid of shock, etc.   To address the above challenges, foam blocks, pearl cotton and other fillers must be used inside the equipment to fix the sample racks, air ducts and other movable parts to prevent them from shaking and colliding inside the box. The door must be locked from the inside with a special lock or strap to prevent it from opening and closing during transportation. Usually, cushioning materials are placed at the door gap to prevent the door from directly hitting the door frame. The main packaging is the most crucial part. It is recommended to adopt a multi-layer protective structure, such as moisture-proof and dust-proof, cushioning protection, as well as wooden box frame and external protection.   The transportation plan mainly includes The first choice for domestic land transportation is flatbed trucks. It is convenient for top hoisting and side loading and unloading, and is suitable for extra-wide and extra-high goods. The second choice is a box van, which can offer better protection against rain and dust, but it is necessary to ensure that the internal dimensions and load-bearing capacity are sufficient. But the key lies in the fact that airbag vehicles or air-suspended vehicles must be used to maximize shock absorption. 2. Sea transportation is the most commonly used in international transportation. The equipment packaging must be able to withstand the jolts, humidity and salt spray environment inside the container. It is recommended to use a 40-foot super high cabinet. When necessary, place desiccants inside the container. Air freight is extremely costly and is only suitable for urgent or ultra-short lead time projects. There are strict restrictions on the weight and size of the packaging. 3. Loading and unloading must be carried out using cranes or forklifts. It is strictly prohibited to directly fork at the equipment body. The technical specifications of the equipment usually clearly specify the maximum tilt Angle (such as 15° or 30°). Strict compliance must be maintained during transportation and handling; otherwise, it may lead to compressor damage or refrigerant leakage. Finally, it is necessary to confirm the on-site passage dimensions, ground load-bearing capacity and elevator capacity with the customer in advance, and formulate a detailed positioning plan.   The packaging and transportation of walk-in temperature test chambers is essentially a professional task that treats industrial equipment as "precision goods". Any negligence in any link may lead to huge economic losses and project delays. Therefore, investing sufficient resources and efforts in the packaging and transportation plan is a key prerequisite for ensuring the safe arrival and smooth operation of the equipment.

  hot Tags : Walk-in Environmental Test Chamber Environmental Testing Equipment Walk-in High and Low Temperature Test Chamber Walk-in Artificial Climate Chamber Large-scale Environmental Testing Chamber Walk-in Constant Temperature and Humidity Chamber

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• The Principle of Balancing the Temperature inside the Test Chamber by the Air Valve

  Sep 22, 2025

  Its core principle is a closed-loop negative feedback system of "heating - measurement - control". In simple terms, it is to precisely control the power of the heating elements inside the box to counteract the heat dissipation caused by the external environment, thereby maintaining a constant test temperature that is higher than the ambient temperature. The process by which the air valve stabilizes the temperature is a dynamic and continuously adjusting closed loop:   First, set a target temperature. The temperature sensor measures the actual temperature inside the box in real time and transmits the signal to the PID controller. When the PID controller calculates the error value, it calculates the heating power that needs to be adjusted based on the error value through the PID algorithm. The algorithm will take into account three factors P (proportion) : How large is the current error? The greater the error, the greater the adjustment range of the heating power. I (integral) : The accumulation of errors over a certain period of time. It is used to eliminate static errors (for example, if there is always a slight deviation, the integration term will gradually increase the power to completely eliminate it). D (differential) : The rate of change of the current error. If the temperature is rapidly approaching the target, it will reduce the heating power in advance to prevent "overshoot". 3. The PID controller sends the calculated signal to the power controller of the heating element (such as a solid-state relay SSR), precisely regulating the voltage or current applied to the heating wire, thereby controlling its heat generation. 4. The circulating fan works continuously to ensure that the heat generated by heating is distributed rapidly and evenly. At the same time, it also quickly feeds back the signal changes of the temperature sensor to the controller, making the system response more timely.   The air valve balancer measures air volume, while the density of air varies with temperature. Under the same differential pressure value, the mass flow rate or volume flow rate corresponding to air of different densities is different. Therefore, the temperature must be stabilized at a known fixed value so that the microprocessor inside the instrument can accurately calculate the air volume value under standard conditions based on the measured differential pressure value using the preset formula. If the temperature is unstable, the measurement results will be unreliable.  

  hot Tags : High and Low Temperature Test Chamber Constant Temperature and Humidity Chamber Temperature Testing Equipment Environmental Simulation Test Chamber Core Components of Test Chamber High and Low Temperature Balance

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• Building a Safe Test Chamber Test Environment

  Sep 16, 2025

  The key to creating a safe testing environment for the Lab high and low temperature test chamber lies in ensuring personal safety, equipment safety, test piece safety and data accuracy. 1.Personal Safety Considerations Before opening the high-temperature chamber door to take out the sample, it is necessary to wear the high and low temperature resistant protective equipment properly. When performing operations that may cause splashing or the leakage of extremely hot/cold gases, it is recommended to wear a protective face mask or goggles. The test chamber should be installed in a well-ventilated laboratory and avoid operating in a confined small space. High-temperature testing may release volatile substances from the test piece. Good ventilation can prevent the accumulation of harmful gases. Ensure that the power cord specifications meet the equipment requirements and the grounding wire must be reliably connected. Most importantly, it is strictly forbidden to touch power plugs, switches and samples with wet hands to prevent electric shock.   2. Install the equipment correctly The minimum safety distance specified by the manufacturer (usually at least 50-100 centimeters) must be left on the back, top and both sides of the equipment to ensure the normal operation of the condenser, compressor and other heat dissipation systems. Poor ventilation can cause equipment to overheat, performance decline and even fire. It is recommended to provide a dedicated power line for the test chamber to avoid sharing the same circuit with other high-power equipment (such as air conditioners and large instruments), which may cause voltage fluctuations or tripping. The ambient temperature for the operation of the equipment is recommended to be between 5°C and 30°C. Excessively high ambient temperatures will significantly increase the load on the compressor, leading to a decline in refrigeration efficiency and malfunctions. Please note that the equipment should not be installed in direct sunlight, near heat sources or in places with strong vibrations.   3. Ensuring the Validity and Repeatability of Tests The samples should be placed in the central position of the working chamber inside the box. There should be sufficient space between the samples and between the samples and the box wall (it is usually recommended to be more than 50mm) to ensure smooth air circulation inside the box and uniform and stable temperature. After conducting high-temperature and high-humidity tests (such as in a constant temperature and humidity chamber), if low-temperature tests are required, dehumidification operations should be carried out to prevent excessive ice formation inside the chamber, which could affect the performance of the equipment. It is strictly prohibited to test flammable, explosive, highly corrosive and highly volatile substances, except for explosion-proof test chambers specially designed for this purpose. It is strictly prohibited to place dangerous goods such as alcohol and gasoline in ordinary high and low temperature chambers.   4. Safety Operation Specifications and Emergency Procedures Before operation, check whether the box door is well sealed and whether the door lock function is normal. Check if the box is clean and free of any foreign objects. Confirm whether the set temperature curve (program) is correct. During the test period, it is necessary to regularly check whether the operation status of the equipment is normal and whether there are any abnormal noises or alarms. Sample handling and placement norms: Wear high and low temperature gloves properly. After opening the door, slightly turn your body to the side to avoid the heat wave hitting your face. Quickly and carefully remove the sample and place it in a safe area. Emergency response: Be familiar with the location of the emergency stop button of the equipment or how to quickly cut off the main power supply in an emergency. Carbon dioxide fire extinguishers (suitable for electrical fires) should be provided nearby instead of water or foam fire extinguishers.

  hot Tags : Constant Temperature and Humidity Test Chamber High and Low Temperature Test Chamber Temperature Cycling Box Test Chamber Test Environment Precision Oven Safety Precautions for Test Chambers

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• Lab Three-Combination Test Chamber Low Pressure Test Guide

  Sep 13, 2025

  The core system of the three-combination test chamber mainly consists of a pressure-bearing test chamber, a vacuum system, a special temperature and humidity control system, and a high-precision collaborative controller. Essentially, it is a complex set of equipment that highly integrates a temperature/humidity environment chamber, a vibration table, and a vacuum system (highly simulated). The process of conducting low-pressure tests is a precise collaborative control process. Taking the low-temperature - low-pressure test as an example, its test process is as follows:   1. Preparation stage: Firmly install the sample on the vibrating table surface inside the box (if vibration is not required, install it on the sample rack), close and lock the box door to ensure that the high-strength sealing strip is effective. Set the complete test program on the control interface, including:Pressure curve, temperature curve, humidity curve and vibration curve. 2. Vacuuming and cooling: The control system starts the vacuum pump set, and the vacuum valve opens to begin extracting the air inside the box. Meanwhile, the refrigeration system started to work, sending cold air into the box, and the temperature began to drop. The control system will dynamically coordinate the pumping speed of the vacuum pump and the power of the refrigeration system. Because when the air becomes thinner, the efficiency of heat conduction is greatly reduced, and the difficulty of cooling will increase. The system may not fully cool down until the air pressure drops to a certain level. 3. Low-pressure/low-temperature maintenance stage: Once both the pressure and temperature reach the set values, the system enters the maintenance state. As there is extremely tiny leakage in any box, the pressure sensor will monitor the air pressure in real time. When the air pressure exceeds the set value, the vacuum pump will automatically start to pump a little, maintaining the pressure within a very precise range. 4. Humidification is the most complex step. If it is necessary to simulate high humidity in a high-altitude and low-pressure environment, the control system will activate the external steam generator, and then slowly "inject" the generated steam into the low-pressure box through a special pressurization and metering valve, and the humidity sensor will provide feedback control. 5. After the test period ends, the system enters the recovery stage. The controller slowly opens the pressure relief valve or air injection valve to allow dry filtered air to slowly enter the box, enabling the air pressure to steadily return to normal pressure. When both the air pressure and temperature stabilize at room temperature and normal pressure, the controller will send a signal to indicate the end of the test. The operator can then open the box door and take out the sample for subsequent performance testing and evaluation.   The low-pressure test of the three-combination test chamber is a highly complex process, which relies on the precise coordination of its pressure-resistant chamber, powerful vacuum system and temperature and humidity control system specially designed for low-pressure environments. It can truly simulate the harsh tests that products simultaneously endure in high-altitude, high-altitude and other environments, including severe cold, low oxygen (low air pressure), and humidity. It is an indispensable key testing device in fields such as aerospace, military industry, and automotive electronics.

  hot Tags : High and Low Temperature Test Chamber Three-combination Test Chamber Large-scale Test Equipment Environmental Reliability Test System Vibration - Temperature and Humidity Comprehensive Test Chamber THV Series Three-Combination Test Chamber

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• Corrosive Effect of Salt Spray Testing Machine

  Sep 12, 2025

  The salt spray testing machine is a widely used corrosion testing device. Its core function is to evaluate the corrosion resistance of materials by simulating and accelerating the corrosion process. Firstly, the sprayed sodium chloride (NaCl) solution forms a thin, conductive salt film on the surface of the sample. This liquid film, as an electrolyte, provides the necessary environment for electrochemical corrosion. The region with higher surface activity of the metal serves as the anode, where metal atoms lose electrons and undergo oxidation reactions, transforming into metal ions that dissolve into the electrolyte. The area with lower surface activity of the metal serves as the cathode. A reduction reaction occurs in the presence of oxygen in a salt solution. Finally, the metal ions produced at the anode (such as Fe²⁺) combine with the hydroxide ions (OH⁻) generated at the cathode to form metal hydroxides, which are further oxidized into common rust. For example: Fe²⁺ + 2OH⁻ → Fe(OH)₂ 4Fe(OH)₂ + O₂ → 2Fe₂O₃·H₂O + 2H₂O(Red rust) Compared with the slow corrosion in nature, the salt spray test greatly accelerates the corrosion process in the following ways: 1. Constant high-concentration brine environment: Usually a 5% sodium chloride solution is used, with a concentration much higher than that of most natural environments (such as seawater), providing a large amount of corrosive chloride ions (Cl⁻). Chloride ions have strong penetrating power and can destroy the passivation film on the metal surface, allowing corrosion to continue. 2. Continuous spraying: The machine continuously atomizes salt water and sprays it into a sealed box, ensuring that all surfaces of the sample are evenly covered by the salt spray. This avoids the alternating dry and wet conditions in the natural environment and allows the corrosion reaction to proceed without interruption. 3. Heating: The temperature of the test chamber is usually kept constant at 35℃. The temperature rise accelerates the rates of all chemical reactions, including the electrochemical corrosion process, thereby significantly speeding up corrosion. 4. Oxygen supply: The surface area of the atomized droplets is extremely large, which can fully dissolve oxygen in the air. Continuous spraying ensures a steady supply of oxygen required for the cathodic corrosion reaction. Lab salt spray testing machine is suitable for neutral salt spray tests (NSS) and corrosion tests (AASS, CASS) of various communication electronic products, electronic appliances and hardware components. Complies with standards such as CNS, ASTM, JIS, and ISO. The salt spray test is conducted on the surfaces of various materials that have undergone anti-corrosion treatments such as coating, electroplating, anodizing, and anti-rust oil to assess the corrosion resistance of the products. It is worth noting that salt spray testing is a highly accelerated test, and its corrosion mechanism and morphology are not exactly the same as those in real outdoor environments (such as atmospheric exposure and seawater immersion). Products that pass this test do not necessarily achieve the same corrosion resistance period in all real environments. It is more suitable for relative rankings rather than absolute predictions.

  hot Tags : Salt Spray Corrosion Test Chamber Environmental Simulation Test Chamber Salt Spray Testing Machine CASS Test Chamber Corrosion Testing Equipment NSS Test Chamber

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• How does the Lab Ultraviolet Light Test Chamber Reproduce Sun Exposure and Rain?

  Sep 10, 2025

  Lab Companion UV weathering test chamber is a professional device used to simulate and evaluate the resistance performance of materials under ultraviolet radiation and corresponding climatic conditions for testing outdoor products. Its core function lies in simulating the impact of ultraviolet rays on materials in the natural environment through artificially controlled ultraviolet irradiation, temperature and humidity changes, thereby conducting comprehensive and systematic tests on the durability, color stability and physical properties of materials. In recent years, with the development of technology and the continuous improvement of requirements for material performance, the application of UV weathering test chambers has become increasingly widespread, covering multiple fields such as plastics, coatings, and textiles. The Q8 system independently developed by Lab can simulate the damage caused by sunlight and rain, and complies with multiple international certification standards. It can be programmed to conduct continuous ultraviolet light and rain weather resistance tests 24 hours a day and 7 days a week. It only takes a few days or weeks to reproduce the damage that occurs outdoors in months or even years, including various phenomena such as color change and powdering. Meanwhile, the Q8/UV2/UV3 are equipped with a standard ultraviolet light detection system, which precisely controls the light intensity. Four sets of UV intensity sensors automatically adjust the energy of the lamp tubes based on the aging state to make compensation, significantly reducing the experimental time and ensuring the reproducibility of the system. To more realistically simulate the effects of rainwater scouring and cooling, the ultraviolet test chamber is also equipped with a spray system. The Q8/UV3 model is equipped with 12 sets of water spray devices to simulate mechanical corrosion caused by rainwater erosion. When the sample is heated to a high temperature by an ultraviolet lamp, it is sprayed with cold water to generate intense thermal contraction stress, simulating a sudden downpour in summer. The scouring effect of water flow can simulate the erosion of coatings, paints and other surfaces by rainwater, washing away the aged and decomposed substances on the surface and exposing new material layers to continue aging. A typical test loop is: Under the set irradiance and high temperature, 4 hours of ultraviolet light is used to simulate daytime sun exposure. With the lights off and high humidity maintained, 4 hours of condensation at night is simulated. During this process, short sprays can be inserted regularly to simulate rainfall. By intensifying and cycling these key environmental factors, the ultraviolet light test chamber can reproduce within days or weeks the aging damage that materials would take months or even years outdoors, thus being used for product quality control and durability assessment. However, this test is an accelerated experiment, and its results are correlated with those of real outdoor exposure, rather than being completely equivalent. Different materials and testing standards will select different types of lamp tubes, irradiance, temperatures, and cycle periods to obtain the most relevant prediction results.

  hot Tags : Temperature and Humidity Test Chamber Environmental Simulation Test Chamber Ultraviolet Light Test Chamber Accelerated Aging Test Chamber Ultraviolet Light Simulation Test Environmental Testing Equipment

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• How to Choose the Appropriate Cooling Method for Test Chambers？

  Sep 09, 2025

  Air cooling and water cooling are two mainstream heat dissipation methods in refrigeration equipment. The most fundamental difference between them lies in the different media they use to discharge the heat generated by the system into the external environment: air cooling relies on air, while water cooling relies on water. This core difference has given rise to numerous distinctions among them in terms of installation, usage, cost and applicable scenarios.   1. Air-cooled system The working principle of an air-cooling system is to force air flow through a fan, blowing it over its core heat dissipation component - the finned condenser, thereby carrying away the heat in the condenser and dissipating it into the surrounding air. Its installation is very simple and flexible. The equipment can operate simply by connecting to the power supply and does not require additional supporting facilities, thus having the lowest requirements for site renovation. This cooling performance is significantly affected by the ambient temperature. In hot summers or high-temperature environments with poor ventilation, due to the reduced temperature difference between the air and the condenser, the heat dissipation efficiency will drop markedly, resulting in a decline in the equipment's cooling capacity and an increase in operational energy consumption. Moreover, it will be accompanied by considerable fan noise during operation. Its initial investment is usually low, and daily maintenance is relatively simple. The main task is to regularly clean the dust on the condenser fins to ensure smooth ventilation. The main operating cost is electricity consumption. Air-cooled systems are highly suitable for small and medium-sized equipment, areas with abundant electricity but scarce water resources or inconvenient water access, laboratories with controllable environmental temperatures, as well as projects with limited budgets or those that prefer a simple and quick installation process.   2. Water-cooled system The working principle of a water-cooling system is to use circulating water flowing through a dedicated water-cooled condenser to absorb and carry away the heat of the system. The heated water flow is usually transported to the outdoor cooling tower for cooling and then recycled again. Its installation is complex and requires a complete set of external water systems, including cooling towers, water pumps, water pipe networks and water treatment devices. This not only fixes the installation location of the equipment, but also places high demands on site planning and infrastructure. The heat dissipation performance of the system is very stable and is basically not affected by changes in the external environmental temperature. Meanwhile, the operating noise near the equipment body is relatively low. Its initial investment is high. Besides electricity consumption, there are also other costs such as continuous water resource consumption during daily operation. The maintenance work is also more professional and complex, and it is necessary to prevent scale formation, corrosion and microbial growth. Water-cooled systems are mainly suitable for large, high-power industrial-grade equipment, workshops with high ambient temperatures or poor ventilation conditions, as well as situations where extremely high temperature stability and refrigeration efficiency are required.   Choosing between air cooling and water cooling is not about judging their absolute superiority or inferiority, but about finding the solution that best suits one's specific conditions. Decisions should be based on the following considerations: Firstly, large high-power equipment usually prefers water cooling to achieve stable performance. At the same time, the geographical climate of the laboratory (whether it is hot), water supply conditions, installation space and ventilation conditions need to be evaluated. Secondly, if a relatively low initial investment is valued, air cooling is a suitable choice. If the focus is on long-term operational energy efficiency and stability, and one does not mind the relatively high initial construction cost, then water cooling has more advantages. Finally, it is necessary to consider whether one has the professional ability to conduct regular maintenance on complex water systems.

  hot Tags : High and Low Temperature Test Chamber Temperature Test Chamber Test Chamber Air-cooled Heat Dissipation Test Chamber Water Cooling Heat Dissipation Refrigeration Equipment for Test Chamber Environmental Simulation Test Chamber

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• Working Principle of Lab Companion Air-cooled Mechanical Compression Refrigeration

  Sep 06, 2025

  1.Compression The low-temperature and low-pressure gaseous refrigerant flows out of the evaporator and is sucked in by the compressor. The compressor does work on this part of the gas (consuming electrical energy) and compresses it violently. When the refrigerant turns into high-temperature and high-pressure superheated vapor, the temperature of the vapor is much higher than the ambient temperature, creating conditions for heat release to the outside. 2. Condensation The high-temperature and high-pressure refrigerant vapor enters the condenser (usually a finned tube heat exchanger composed of copper tubes and aluminum fins). The fan forces the ambient air to blow over the condenser fins. Subsequently, the refrigerant vapor releases heat to the flowing air in the condenser. Due to cooling, it gradually condenses from a gaseous state into a medium-temperature and high-pressure liquid. At this point, the heat is transferred from the refrigeration system to the outdoor environment. 3. Expansion The medium-temperature and high-pressure liquid refrigerant flows through a narrow channel through the throttling device, which serves to throttle and reduce pressure, similar to blocking the opening of a water pipe with a finger. When the pressure of the refrigerant drops suddenly, the temperature also drops sharply, turning into a low-temperature and low-pressure gas-liquid two-phase mixture (mist). 4. Evaporation The low-temperature and low-pressure gas-liquid mixture enters the evaporator, and another fan circulates the air inside the box through the cold evaporator fins. The refrigerant liquid absorbs the heat of the air flowing through the fins in the evaporator, rapidly evaporates and vaporizes, and reverts to a low-temperature and low-pressure gas. Due to the absorption of heat, the temperature of the air flowing through the evaporator drops significantly, thereby achieving the cooling of the test chamber.   Subsequently, this low-temperature and low-pressure gas is drawn into the compressor again, initiating the next cycle. In this way, the cycle repeats itself without end. The refrigeration system continuously "moves" the heat inside the box to the outside and dissipates the heat into the atmosphere through the fan.

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity test Chamber Environmental Simulation Test Refrigeration Air Cooled Temperature Testing Equipment Refrigeration Compressor

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• High-temperature Oven Maintenance Guide

  Sep 05, 2025

  1. Daily Maintenance First, clean the interior of the box to remove any residual contaminants from the test (such as dust and sample debris) to prevent them from corroding the inner liner or contaminating subsequent test samples. After the box has completely cooled down, wipe the inner liner, shelves and inner walls with a dry soft cloth. Second, clean the exterior of the box to prevent dust from blocking the ventilation openings and affecting heat dissipation. Especially around the ventilation openings, make sure there is no dust accumulation. Thirdly, check whether the sealing strip of the box door is flat, free of cracks and deformation. Aging or damage to the sealing strip can lead to heat leakage and a decrease in temperature uniformity. Fourth, empty the chamber: Emptying the chamber after use can prevent irrelevant items from being stored in the box for a long time, which may cause contamination or accidents.   2.Regular Maintenance Please be sure to cut off the power supply before cleaning the heating element! Wait for the equipment to cool down completely. Open the rear cover plate and gently remove the dust on the surface of the electric heating tube and the air duct with a vacuum cleaner or a soft brush. Check and clean the fan/impeller. Dust accumulation on the fan can cause dynamic balance imbalance, seriously affecting the uniformity of temperature. Therefore, after the power is cut off, it is necessary to check whether there is any abnormal noise from the fan motor bearings and use a vacuum cleaner to clean the accumulated dust on the fan blades.  Electrical components shall be inspected by professional equipment administrators for any loose, charred or rusted marks on the power lines, circuit breakers, contactors and other terminal blocks. Tighten the loose terminals and replace the damaged parts to ensure the safety and reliability of the electrical connection. The accuracy of the temperature sensor can directly determine the success or failure of the test. It is recommended that every six months or once a year, a standard thermometer that has undergone metrological calibration be used to conduct multi-point comparison calibration of the working temperature range of the equipment. If deviations are detected, parameter corrections or sensor replacements should be made in the control system. Clean the humidity system. If your device has a humidity function, you also need to clean the humidification water pan regularly, replace the wet cloth to prevent the growth of scale and algae, and use deionized water or purified water to reduce scale.   3. Long-term Maintenance after discontinuation First, thoroughly clean the inside and outside of the box, and then completely cover the equipment with a dust cover. Secondly, it is recommended to power on and run the equipment for half an hour to one hour without load once a month. This can remove the moisture inside the box, keep the electrical components active, prevent them from being damaged by moisture, and lubricate the mechanical parts. Finally, during non-power-on periods, it is recommended to completely cut off the main power supply to ensure safety and save standby power consumption.   Please always keep in mind that safety comes first in the above operations. By implementing a systematic maintenance plan, you can extend the service life of the high-temperature oven, ensure the accuracy and repeatability of the test data, and reduce the frequency of equipment failures and maintenance costs.

  hot Tags : High Temperature Oven Test Chamber Environmental Test Equipment High Temperature Environment Simulation Test High Temperature Monitoring High Temperature Test Equipment

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• Lab Companion Vacuum Oven Working Principle

  Sep 02, 2025

  Lab Companion vacuum oven is a precision device that dries materials under low-pressure conditions. Its working principle is based on a core scientific principle: in a vacuum state, the boiling point of a liquid will significantly decrease. Its working process can be divided into three key links:   1. Vacuum creation: By continuously extracting air from the oven chamber through a vacuum pump set, the internal environment is reduced to a level far below atmospheric pressure (typically up to 10Pa or even higher vacuum degrees). This move achieves two purposes: First, it greatly reduces the oxygen content in the cavity, preventing the material from oxidizing during the heating process; The second is to create conditions for the core physical process: low-temperature boiling. 2. Heating provides energy: At the same time as the vacuum environment is established, the heating system (usually using electric heating wires or heating plates) starts to work, providing thermal energy for the materials inside the chamber. Due to the extremely low internal pressure, the boiling points of the moisture or other solvents contained in the material drop sharply. For instance, at a vacuum degree of -0.085MPa, the boiling point of water can be reduced to approximately 45℃. This means that the material does not need to be heated to the conventional 100℃, and the internal moisture can vaporize rapidly at a lower temperature. 3. Steam removal: The water vapor or other solvent vapors produced by vaporization will be released from the surface and interior of the material. Due to the pressure difference within the cavity, these vapors will rapidly diffuse and be continuously drawn away by the vacuum pump, then discharged into the external environment. This process is ongoing continuously, ensuring the maintenance of a dry environment and preventing steam from re-condensing within the cavity, thereby driving the drying reaction to proceed continuously and efficiently towards dehydration.   The "low-temperature and high-efficiency drying" feature of vacuum ovens makes them widely used in the fields of pharmaceuticals, chemicals, electronics, food, and materials science, especially suitable for processing precious, sensitive or difficult-to-dry materials by conventional methods.

  hot Tags : Temperature Test Chamber Vacuum Oven Test Chamber Vacuum Environment Test High Temperature Drying Equipment Vacuum Oven Materials Test High Temperature Environment Test Chamber

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• Application of high and low temperature test chambers in the research of new Energy materials

  Aug 30, 2025

  1. Lithium-ion batteries: High and low temperature tests run through all R&D stages of lithium-ion batteries, from materials, cells to modules. 2. Material level: Evaluate the basic physical and chemical properties of basic materials such as positive and negative electrode materials, electrolytes, and separators at different temperatures. For instance, testing the lithium plating risk of anode materials at low temperatures, or examining the thermal shrinkage rate (MSDS) of separators at high temperatures. 3. Cell level: Simulate the cold winter in the frigid zone (such as -40℃ to -20℃), test the low-temperature start-up, discharge capacity and rate performance of the battery, and provide data support for improving low-temperature performance. Cyclic charge and discharge tests are conducted at high temperatures (such as 45℃ and 60℃) to accelerate aging and predict the long-term service life and capacity retention rate of the battery. 4. Fuel cells: Proton exchange membrane fuel cells (PEMFC) have extremely strict requirements for the management of water and heat. Cold start capability is a key technical bottleneck for the commercialization of fuel cells. The test chamber simulates an environment below freezing point (such as -30℃) to test whether the system can be successfully started after freezing and to study the mechanical damage of ice crystals to the catalytic layer and proton exchange membrane. 5. Photovoltaic materials: Solar panels need to serve outdoors for more than 25 years, enduring the harsh tests of day and night as well as the four seasons. By simulating the temperature difference between day and night (such as 200 cycles from -40℃ to 85℃), the thermal fatigue of the interconnect solder tape of the battery cells, the aging and yellowing of the encapsulation materials (EVA/POE), and the bonding reliability between different laminated materials can be tested to prevent delamination and failure.   Modern high and low temperature test chambers are no longer simple temperature change chambers, but intelligent testing platforms integrating multiple functions. The advanced test chamber is equipped with observation Windows and test holes, allowing researchers to monitor the samples in real time during temperature changes.

  hot Tags : Temperature Test Chamber Environmental Test Equipment High and Low Temperature Cycle Test Temperature Difference Control Environmental Simulation Test High Temperature Environment Test

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