High and Low Temperature Humidity Test Chamber

• Common Problems and Solutions for Dual 85 Testing of Temperature and Humidity Test Chambers

  Dec 09, 2025

      This guide summarizes key issues and solutions for temperature & humidity test chambers during dual 85 testing (85℃, 85% RH), focusing on quick troubleshooting and long-term maintenance for operators and customers. I. Core Issues & Resolution System Each issue includes root cause, immediate solution, and long-term prevention (except for defect exposure). 1. Failure to Reach 85% RH Root Cause: Compressor over-dehumidifies—evaporator temperature below dew point (79-80℃) causes condensation, outpacing humidification. Immediate Solution: Disable compressor; run only heating and humidification to maintain 85℃ and avoid condensation. Prevention: Regularly calibrate humidifier atomization volume and check evaporator temperature sensor accuracy. 2. Temperature Out-of-Control/Fluctuations Root Cause: Mainly faulty solid-state relays (keeps heating elements on), plus aging heating tubes or defective temperature sensors. Immediate Solution: Cut power; inspect circuit with multimeter (relay on-off, heating tube damage, sensor accuracy) and replace faulty parts. Prevention: 10-15min pre-calibration before testing; replace vulnerable parts (relays, sensors) every 1000 operating hours. 3. Water Marks/Condensation on Products Root Cause: Residual oil/dust on products, or dense samples blocking air ducts (poor circulation, localized high humidity). Immediate Solution: Pause test; clean products with anhydrous ethanol, dry, and reposition samples for proper spacing. Prevention: Establish pre-test cleaning standards; clean air duct filters regularly and optimize sample rack layout. 4. Incorrect Operation Logic Root Cause: Operator errors—misactivated refrigeration, wrong parameters (fast heating, delayed humidification), or mismatched operation modes. Immediate Solution: Reset program (disable refrigeration, set 85℃/85% RH, sync humidification with heating). Prevention: Develop SOPs; new employees must pass operation assessments (including simulated faults). 5. Material/Process Defect Exposure Root Cause: Extreme environment accelerates aging—e.g., poor heat-resistant EVA film hydrolyzes (yellowing, delamination); leaky electronic packages cause corrosion/short circuits. Measures: Inspect products post-test, record defects; judge qualification by material standards; optimize processes (e.g., use hydrolysis-resistant EVA, enhance sealant density).

  hot Tags : High and Low Temperature Humidity Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Temperature Environment Test Chamber Environmental Chamber Temperature and Humidity Test Chambers

  Read More
• What do you know about test chamber safety protection settings?

  Dec 04, 2025

      Test chambers, as core equipment for environmental reliability testing across industries such as electronics, automotive, aerospace, and new energy, rely on a multi-dimensional, redundant safety protection system to ensure long-term operational stability, personnel safety, and the integrity of test samples and equipment. Beyond basic safety guarantees, these protection mechanisms are designed to adapt to complex test scenarios and extreme environmental conditions. Here’s a professional and detailed breakdown of the core protection settings: 1. Refrigeration System Protection Compressor protection: Equipped with overpressure, overheating, and overcurrent triple protection mechanisms. Real-time monitoring of operating pressure, exhaust temperature, and working current prevents compressor burnout, cylinder scuffing, or seal damage caused by abnormal conditions such as refrigerant leakage, pipeline blockage, or voltage fluctuations. Refrigerant protection: Integrated high/low pressure switches and overload protection devices continuously monitor the refrigerant circulation system. When pressure exceeds the safe threshold or the system is overloaded, the device automatically cuts off the corresponding circuit and triggers an alarm, ensuring stable refrigerant flow and avoiding system damage due to pressure anomalies. 2. Test Area Protection Multi-layer over-temperature protection (redundant design): 1st layer: Adjustable high/low temperature over-temperature protection, dynamically linked to the set operating control temperature. When the test area temperature deviates from the set range by a preset value, the system automatically adjusts the heating/cooling module or pauses operation to prevent sample damage. 2nd/3rd layers: Independent electronic high-temperature over-temperature protection devices (double redundancy). Directly connected to the power supply circuit, these devices bypass the main control system to cut off power immediately if the 1st layer protection fails, eliminating potential fire hazards or equipment damage caused by excessive temperature. Fan motor overcurrent protection: Monitors the operating current of the test area circulation fan. If the motor jams, wears, or experiences current surges due to other faults, the protection system triggers an alarm and cuts off power to avoid motor burnout and ensure uniform temperature distribution in the test chamber. Fault alarm system: Integrates sound and light alarms with a digital display. When abnormalities occur (e.g., over-temperature, water shortage, or sensor failure), the system immediately cuts off the relevant power supply, activates the alarm, and displays the specific fault cause on the control panel for quick troubleshooting. Active water shortage reminder: For humidity-controlled test chambers, a real-time water level monitoring sensor in the humidity water tank triggers an audible and visual alarm when the water level is too low. The system pauses the humidity control function to prevent dry burning of the humidifier and ensure the stability of the humidity control system. Dynamic high/low temperature protection: Real-time adapts to the set test parameters (temperature range, rate of change). During rapid temperature rise/fall or extreme temperature tests, the protection system dynamically adjusts the safety threshold to avoid false triggers while ensuring comprehensive protection against temperature anomalies. 3. General Electrical Protection Main power supply protection: Equipped with phase sequence and phase loss protection devices. Automatically detects the phase sequence and integrity of the three-phase power supply; if phase sequence reversal or phase loss occurs, the system locks the power supply and alarms to prevent damage to the compressor, fan, and other core components caused by incorrect power supply. Short circuit & leakage/surge protection: Configured with high-sensitivity short circuit breakers to quickly cut off power in case of line short circuits, avoiding electrical fires or component burnout. Equipped with leakage circuit breakers and RC electronic surge protectors to prevent electric shock hazards caused by equipment leakage and suppress voltage surges from the power grid, protecting the control system and electronic components. Sensor self-detection: Real-time self-inspection of temperature, humidity, and other key sensors. If a sensor malfunctions (e.g., signal loss, inaccurate measurement), the system immediately alarms and switches to backup sensor data (if equipped) or pauses operation to ensure the reliability of test data and prevent misoperation due to false sensor signals. Dry heating protection (humidity water circuit): For the humidity water circuit and humidifier, a dedicated dry heating protection device monitors the water level and heating status. If the humidifier heats without water, the protection system cuts off the heating power immediately to avoid humidifier burnout and extend the service life of the humidity system. Expandable protection: Reserved 2 fault detection input interfaces, supporting customized addition of special protection modules (e.g., gas leakage protection for flammable/explosive test samples, pressure protection for sealed test chambers) to meet the safety requirements of industry-specific test scenarios. These multi-layered, redundant, and configurable protection mechanisms form a comprehensive safety barrier for test chambers. Whether in routine reliability testing or extreme environmental simulations, they ensure the equipment operates stably and reliably, while maximally safeguarding the safety of operators, test samples, and the equipment itself—becoming a key guarantee for the accuracy of test results and long-term operational efficiency.

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Temperature Environment Test Chamber Testing Equipment

  Read More
• Energy-Saving Environmental Test Chamber: Safeguard Your Long-Term Product Costs

  Dec 01, 2025

  For enterprises in manufacturing, electronic technology, and related industries, product reliability testing is a critical quality assurance link. However, the operational costs of environmental test chambers—core testing equipment—are often overlooked. Many businesses focus solely on testing precision during procurement, only to be troubled by high energy bills in long-term use. Our energy-saving environmental test chamber effectively resolves the conflict between "accurate testing" and "cost control," providing comprehensive support for product lifecycle cost management. Core Energy-Saving Feature: Intelligent Refrigeration System Regulation As the primary energy-consuming component of environmental test chambers, the energy regulation technology of the refrigeration system directly determines the equipment’s energy efficiency. On the premise of meeting core technical indicators, this test chamber innovatively integrates multiple energy adjustment measures to achieve intelligent dynamic control of refrigeration capacity. The system precisely regulates evaporation temperature via the controller and links it with a hot gas bypass energy adjustment mechanism, matching refrigeration demand in real time based on the required cooling rate and target temperature range. When approaching the set low temperature, the system automatically reduces refrigeration capacity to avoid temperature overshoot—a common issue in traditional models—ensuring test stability. During the constant temperature phase, it abandons the energy-intensive "hot-cold balance" mode, optimizing energy utilization at the source. Verified in real operating conditions, the energy-saving effect reaches up to 30%, significantly reducing long-term operational costs, especially for enterprises requiring 24/7 continuous operation. Precision & Energy Efficiency: Optimized Heating System Power Control Refined control of the heating system further enhances the equipment’s energy-saving advantages and temperature control precision. The system adopts a synergistic control scheme of temperature controllers and thyristors: the temperature controller collects real-time temperature signals and issues control commands, while thyristors precisely adjust the heater’s power output. When the temperature is far below the set value, thyristors deliver full power for rapid heating. As the temperature gradually approaches the set value, the output power decreases incrementally; once the target temperature is reached, power output stops immediately. This on-demand power distribution mode eliminates energy waste and ensures precise temperature control, providing a stable and reliable temperature environment for tests. For example: When the internal temperature is significantly lower than the set value, thyristors operate at full power, and the heater runs at maximum load to ensure rapid temperature rise. As the temperature nears the target, the thyristor’s output power gradually decreases. Once the target temperature is achieved, the thyristor stops power output immediately, and the heater enters standby mode. This "on-demand power supply" mode eliminates the drawback of "frequent start-stop" in traditional heating systems—avoiding ineffective energy consumption while greatly improving temperature control precision, making it particularly suitable for test scenarios requiring high temperature stability. Dual-System Synergy: Safeguard Enterprise Costs From the refrigeration system’s intelligent energy adjustment to the heating system’s precision power control, our environmental test chamber centers on dual-system collaborative energy-saving technology. While ensuring accurate test data, it maximizes energy cost reduction. Choosing our test chamber not only guarantees product testing quality but also enables scientific management of enterprise operational costs, providing peace of mind throughout your product R&D and production processes. In addition, if your enterprise is seeking a cost-effective environmental test chamber or struggling with high energy consumption from existing equipment, we recommend focusing on our energy-saving model. Let professional equipment protect your product quality while reducing costs and enhancing efficiency for your business.

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity Test Chamber Environmental Test Chamber Walk-in Temperature Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber

  Read More
• How to Achieve Precise Temperature Control in High-Low Temperature Test Chambers? The Q8 Series Controller Has the Answer

  Nov 29, 2025

  As the "control core" of high-low temperature test chambers, the Q8 Series Controller delivers stable support for environmental reliability testing with full-scenario adaptability, ultra-high precision, and multiple safety designs. Whether for extreme testing of electronic components or weather resistance verification of new materials, its rich functions and user-friendly design meet the rigorous requirements of scientific research, industrial production, and other fields. I. Intuitive Touch Interaction: Doubling Operational Efficiency Adopting full-touch interaction, the Q8 Controller features a high-definition touchscreen with sensitive response, enabling parameter setting, program startup, and other operations with simple finger taps—no professional training required for new users. The customizable interface allows pinning frequently used functions, significantly reducing configuration time for complex tests and adapting to high-frequency, multi-batch testing scenarios. II.  0.01-Class Precision: Core Guarantee for Accurate Data Equipped with a high-precision data acquisition module and intelligent PID algorithm, the Q8 achieves 0.01-class temperature control precision, capturing real-time temperature fluctuations inside the chamber and adjusting rapidly. Within the wide temperature range of -80℃~150℃, the fluctuation is stabilized at ±0.01℃, avoiding temperature deviations in sensitive tests such as semiconductor and aerospace component testing, and providing authoritative data for product reliability evaluation. III. Versatile Adaptability: Meeting Multi-Scenario Needs Compatible with PT100, thermocouples, and other sensors, the Q8 supports flexible switching to reduce equipment upgrade costs. Its cooling output function precisely controls the refrigeration system to minimize energy waste, while the transmission output converts temperature data into standard electrical signals, seamlessly connecting to data acquisition systems for automatic upload and traceability of test data. IV.  Massive Storage: Intelligent Manager for Complex Processes Catering to multi-stage testing needs (e.g., automotive parts), the Q8 supports storage of 100 process programs, each with up to 50 steps. Operators can preset parameters such as temperature and holding time to simulate working conditions like day-night cycles and extreme temperature shocks. Programs can be activated with one click for continuous operation, enhancing the standardization and efficiency of batch testing. V.  EVT Function: Early Warning Barrier for Test Safety The Q8’s EVT (Event Verification Test) function monitors temperature abnormalities, sensor failures, and other issues in real time. When thresholds are triggered, it activates audio-visual alarms and records fault information. Supporting hierarchical fault handling, it automatically adjusts parameters to resume testing for minor anomalies and shuts down urgently for severe faults, safeguarding unattended long-duration tests. Conclusion: Empowering Test Reliability with Strong Capabilities Integrating intuitive touch operation, 0.01-class precision, versatile adaptability, and comprehensive safety guarantees, the Q8 Controller fully meets the core requirements of high-low temperature testing. Whether for precise scientific research or production quality control, its stable performance and intelligent design serve as the core competitiveness of test chambers, helping industries improve product quality.

  hot Tags : High and Low Temperature Humidity Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Temperature Environment Test Chamber Environmental Chamber High-Low Temperature Test Chambers

  Read More
• Got Your Temperature Test Chamber? Here’s What You Must Do Next!

  Nov 28, 2025

  I. Receipt Inspection  1. Physical Verification Confirm equipment model, specifications, and serial number match the contract/packing list to avoid wrong delivery. Inspect the cabinet, door, and control panel for transportation damage (dents, deformation) and ensure pipelines/wiring are intact without loosening. 2. Accessory & Document Check Required accessories: Power cord, sample shelves, sealing rings, wrenches, and other tools (verify against the packing list). Technical documents: Operation/maintenance manual, calibration certificate, warranty card, and qualification certificate (all mandatory for after-sales service). 3. Abnormal Handling In case of damage or missing items: Immediately take photos (overall equipment, damaged details, packing list), notify the supplier within 24 hours to submit a claim, and sign the "Acceptance Objection Form" for documentation. II. Installation & Deployment (Compliant Installation Ensures Performance) 1. Environment Requirements (Must Meet the Following) Floor: Flat and sturdy, with load-bearing capacity ≥1.2 times the equipment weight (to avoid test errors caused by vibration). Space: ≥30cm ventilation gap around the cabinet; keep away from heat sources, water sources, dust, and strong electromagnetic interference. Power supply: Match the rated voltage (e.g., 380V three-phase five-wire/220V single-phase), grounding resistance ≤4Ω, and equip an independent air switch (power ≥1.2 times the equipment's rated power). Environment: Room temperature 15-35℃, humidity ≤85%RH (no condensation); water-cooled models require pre-connected cooling water circuits meeting specifications. 2. Basic Installation Steps Level the equipment: Adjust anchor bolts and use a level to confirm horizontal alignment (to prevent uneven stress on the refrigeration system). Wiring inspection: Connect the power supply per the manual and ensure correct neutral/grounding connections (a common cause of electrical failures). Consumable check: Confirm refrigerant and lubricating oil (if applicable) are properly filled with no leakage. III. Commissioning (Core: Verify Performance Compliance) 1. First Startup Procedure （1） Recheck power/pipeline connections before power-on; switch on after confirmation. （2）Panel self-test: Ensure the display shows no error codes and buttons/indicators function normally. （3）No-load operation (2-4 hours): Set a common temperature range (e.g., -40℃~85℃) and monitor temperature fluctuation ≤±0.5℃ (meets industrial standards). Check door sealing (no obvious air leakage), operating noise ≤75dB, and normal start/stop of refrigeration/heating systems. 2. Load Verification (Simulate Actual Usage) Place a load equivalent to the test sample (weight/volume ≤80% of the equipment's rated load) without blocking air ducts. Set the target temperature and holding time; record if the heating/cooling rate meets technical parameters (e.g., -40℃~85℃ heating time ≤60 minutes). Alarm test: Simulate power failure, over-temperature, or door-open timeout to confirm timely alarm response (audio-visual alarm + shutdown protection). IV. Emergency Handling & After-Sales Coordination 1. Common Fault Resolution Error codes: Refer to the "Troubleshooting" section in the manual (e.g., E1=Over-temperature, E2=Power abnormality). Sudden failures: (e.g., electric leakage, abnormal noise, refrigeration failure) Immediately cut off power, stop use, and contact the supplier's technical support (do not disassemble independently). 2. After-Sales Support Retain the supplier's after-sales contact (phone + email) and confirm the warranty period (usually 1 year for the whole machine). Maintenance records: Request a "Maintenance Report" after each service and file it for future tracing.

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity Test Chamber Walk-in Temperature Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Temperature Shock Test Chamber

  Read More
• Key Differences in Using Environmental Test Chambers Between Summer and Winter

  Nov 26, 2025

  The core difference lies in the impact of ambient temperature and humidity variations on equipment operating efficiency, energy consumption, and test accuracy. Targeted measures for temperature/humidity control, heat dissipation/anti-freezing, and maintenance are required. Specific differences and precautions are as follows: I. Core Difference Comparison Table Dimension Summer Operation Characteristics Winter Operation Characteristics Ambient Conditions High temperature & high humidity (room temp: 30-40℃, RH: 60%-90%) Low temperature & low humidity (room temp: 0-15℃, RH: 30%-60%) Equipment Load High refrigeration system load, prone to overload High heating system load; humidification compensation required for certain models (e.g., temperature-humidity chambers) Impact on Test Accuracy High humidity causes condensation, affecting sensor accuracy Low temperature leads to pipeline freezing; low humidity may reduce stability of humidity tests Energy Consumption High refrigeration energy consumption High heating/humidification energy consumption   II. Season-Specific Precautions (1) Summer Operation: Focus on High Temperature/High Humidity/Overload Prevention 1. Ambient Heat Dissipation Management Reserve ≥50cm ventilation space around the chamber; avoid direct sunlight or proximity to heat sources (e.g., workshop ovens, air conditioner outlets). Ensure laboratory air conditioning operates normally, maintaining room temperature at 25-30℃. If room temp exceeds 35℃, install industrial fans or cooling devices to assist heat dissipation and prevent refrigeration system overload protection triggered by high ambient temperatures. 2. Moisture & Condensation Control Regularly clean chamber door gaskets with a dry cloth to prevent sealant aging and air leakage caused by high humidity. After humidity tests, open the chamber door promptly for ventilation and wipe off condensation to avoid moisture damage to sensors (e.g., humidity sensors). 3. Equipment Operation Protection Avoid prolonged continuous operation of extreme low-temperature tests (e.g., below -40℃). Recommend shutting down for 1 hour after 8 hours of operation to protect the compressor. Periodically inspect refrigeration system radiators (condensers) and remove dust/debris (blow with compressed air monthly) to ensure heat dissipation efficiency. (2) Winter Operation: Focus on Anti-Freezing/Low Humidity/Startup Failure Prevention 1. Ambient Temperature Guarantee Maintain laboratory temperature above 5℃ (strictly follow 10℃ if specified as the minimum operating temperature) to prevent pipeline freezing (e.g., refrigeration capillaries, humidification pipes). For unheated laboratories, install an insulation cover (with ventilation holes reserved) or activate the "preheating mode" (if supported) before testing. 2. Humidification System Maintenance Use distilled water in the humidification tank to avoid pipe blockage from impurity crystallization at low temperatures. Drain water from the humidification tank and pipelines during long-term non-use to prevent freezing-induced component damage. 3. Startup & Operation Specifications In low-temperature environments, activate "standby mode" for 30 minutes preheating before setting test parameters to avoid compressor burnout from excessive startup load. If startup fails (e.g., compressor inactivity), check power voltage (prone to instability during winter peak hours) or contact after-sales to inspect pipeline freezing. 4. Low Humidity Compensation For low-humidity tests (e.g., ≤30% RH), winter dryness may cause rapid humidity. Adjust humidification frequency appropriately and use the "humidity calibration" function to reduce fluctuations. III. General Precautions (All Seasons) Calibrate temperature/humidity sensors quarterly to ensure data accuracy. Clean air filters monthly to maintain airflow circulation. Arrange test samples evenly to avoid blocking internal air ducts and ensure temperature/humidity uniformity. For long-term non-use: Run the chamber for 1 hour monthly in summer (moisture prevention) and drain pipeline water in winter (freezing prevention). By addressing seasonal environmental variations, equipment service life can be extended, and test failures caused by temperature/humidity fluctuations avoided—aligning with the high precision and stability requirements of the industrial test equipment industry.    

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Environmental Test Chambers Temperature Shock Test Chamber

  Read More
• Common Faults and Practical Solutions for High-Low Temperature Humidity Test Chambers

  Nov 19, 2025

  High and low temperature humidity test chambers are key reliability testing equipment, widely used in electronics, automotive and biomedicine. Their stability directly affects test accuracy. This article summarizes common faults and solutions for efficient troubleshooting. I. Temperature-related Faults: Core Impact on Test Accuracy 1. Failure to Reach Set Temperature Fault Performance: Fails to reach target temperature when heating; slow or no cooling.Possible Causes: Abnormal power voltage, burned heater, compressor failure, fan stop, air duct blockage.Solutions: Verify power matches rated specs (220V/380V); check fan operation and clean duct debris; contact professionals to replace faulty parts if heater/compressor fails. 2. Large Temperature Fluctuation and Poor Uniformity Fault Performance: Excessive temperature difference in the chamber or frequent fluctuations near set value.Possible Causes: Abnormal fan speed, damaged air duct seals, over-dense samples blocking airflow.Solutions: Arrange samples for ventilation; check fan stability and replace damaged seals promptly. 3. Severe Temperature Overshoot Fault Performance: Temperature overshoots set value significantly before dropping.Possible Causes: Improper controller settings, energy regulation system failure.Solutions: Restart to reset parameters; if unresolved, have technicians calibrate controller or overhaul regulation modules. II. Humidity-related Faults: Directly Linked to Test Environment Stability 1. Failure to Reach Set Humidity Fault Performance: Slow or no humidification.Possible Causes: Empty humidification tank, faulty water level sensor, burned humidifier tube, blocked solenoid valve.Solutions: Replenish water; clean valve filter; replace tube or repair sensor if humidifier fails to heat. 2. High Humidity That Cannot Be Reduced Fault Performance: Humidity remains above set value; dehumidification fails.Possible Causes: Faulty dehumidification system, poor chamber sealing, high ambient humidity.Solutions: Check door seals and reduce ambient humidity; report for repair if dehumidification module fails. 3. Abnormal Humidity Display Fault Performance: Humidity reading jumps, disappears or deviates greatly from reality.Possible Causes: Aging humidity sensor, contaminated probe.Solutions: Wipe probe with clean cloth; calibrate or replace sensor if inaccuracy persists. III. Operation and Circulation Faults: Ensure Basic Equipment Operation 1. Fan Not Rotating or Making Abnormal Noise Possible Causes: Motor damage, foreign objects in fan blades, worn bearings.Solutions: Clean debris after power-off; replace motor or bearings if fault persists. 2. Compressor Abnormality Fault Performance: Compressor fails to start or stops frequently after starting.Possible Causes: Power phase loss, overload protection trigger, refrigerant leakage.Solutions: Check three-phase wiring; retry after overload reset; report for refrigerant and compressor inspection if fault recurs. 3. Equipment Alarm Fault Performance: Alarms like "phase loss" or "overload" activate.Possible Causes: Triggered protection from wrong phase sequence, unstable voltage or overheated components.Solutions: Troubleshoot per alarm; restart after 30-minute cooldown for overload; report if ineffective. IV. Core Notes 1. Always power off before troubleshooting to avoid shock or component damage.2. Contact professionals for complex repairs (compressors, refrigerants, circuit boards); do not disassemble yourself.3. Regularly clean air ducts, filters and sensors to reduce over 80% of common faults.

  hot Tags : High and Low Temperature Humidity Test Chamber Humidity Test Chamber Environmental Test Chambers Manufacturers Environmental Simulation Chamber Temperature Environment Test Chamber Test Equipment

  Read More
• The Applicability of Temperature Test Chambers to the Testing of Household Environmental Products

  Oct 18, 2025

  A variety of products used in home environments (more common test objects) such as televisions, air conditioners, refrigerators, washing machines, smart speakers, routers, etc., as well as environmental protection products used to improve the home environment: such as air purifiers, fresh air systems, water purifiers, humidifiers/dehumidifiers, etc. No matter which category it is, as long as it needs to work stably for a long time in a home environment, it must undergo strict environmental reliability tests. The high and low temperature test chamber is precisely the core equipment for accomplishing this task.   The home environment is not always warm and pleasant, and products will face various harsh challenges in actual use. This mainly includes regional climate differences, ranging from the severe cold in Northeast China (below -30°C) to the scorching heat in Hainan (up to over 60°C in the car or on the balcony). High-temperature scenarios such as kitchens close to stoves, balconies exposed to direct sunlight, and stuffy attics, etc. Or low-temperature scenarios: warehouses/balconies without heating in northern winters, or near the freezer of refrigerators. The high and low temperature test chamber, by simulating these conditions, "accelerates" the aging of products in the laboratory and exposes problems in advance.   The actual test cases mainly cover the following aspects: 1. The smart TV was continuously operated at a high temperature of 55°C for 8 hours to test its heat dissipation design and prevent screen flickering and system freezing caused by overheating of the mainboard. 2. For products with lithium batteries (such as cordless vacuum cleaners and power tools), conduct charge and discharge cycles at -10°C to assess the battery performance and safety at low temperatures and prevent over-discharge or fire risks. 3. The air purifier (with both types of "environmental product" attributes) undergoes dozens of temperature cycles between -20°C and 45°C to ensure that its plastic air ducts, motor fixing frames and other structures will not crack or produce abnormal noises due to repeated thermal expansion and contraction. 4. Smart door lock: High-temperature and high-humidity test (such as 40°C, 93%RH) to prevent internal circuits from getting damp and short-circuited, which could lead to fingerprint recognition failure or the motor being unable to drive the lock tongue.   High and low temperature test chambers are not only applicable but also indispensable for the testing of household environmental products. By precisely controlling temperature conditions, it can ensure user safety and prevent the risk of fire or electric shock caused by overheating or short circuits. Ensure that the product can work stably in different climates and home environments to reduce after-sales malfunctions. And it can predict the service life of the product through accelerated testing. Therefore, both traditional home appliance giants and emerging smart home companies will take high and low temperature testing as a standard step in their product development and quality control processes.

  hot Tags : High and Low Temperature Test Chamber High and Low Temperature Humidity Test Chamber Cold and Hot Environment Test Chamber Low Humidity Environment Test Chamber High Temperature Aging Test Chamber Reliability Testing Equipment

  Read More
• 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

  Read More
• Operation details of high and low temperature humidity test chamber

  Jun 05, 2025

  The high and low temperature, humidity, and heat test chamber employs a balanced temperature and humidity control method to achieve precise environmental conditions. It features stable and balanced heating and humidification capabilities, enabling high-precision temperature and humidity control at high temperatures. Equipped with an intelligent temperature regulator, the chamber uses a color LCD touch screen for temperature and humidity settings, allowing for various complex program settings. The program settings are set through a dialogue interface, making the operation simple and quick. The refrigeration circuit automatically selects the appropriate cooling mode based on the set temperature, enabling direct cooling and temperature reduction in high-temperature conditions. The base is constructed from welded channel steel into a grid frame, ensuring it can support the weight of the chamber and personnel under horizontal conditions without causing unevenness or cracking on the bottom surface. The chamber is divided into six surfaces and a double or single-opening door. The inner shell is made of stainless steel plate, while the outer shell is made of color-coated steel plate. The insulation medium is polyurethane rigid foam, which is lightweight, durable, and resistant to impact. The door is also made of color-coated steel plate, with handles designed for both internal and external opening, allowing test personnel to freely open the door from inside the enclosed chamber. This test chamber can record and trace the entire testing process, with each motor equipped with overcurrent protection and short-circuit protection for the heater, ensuring high reliability during operation. It is equipped with USB interfaces and Ethernet communication functions, meeting customers' diverse needs for communication and software expansion. The popular refrigeration control mode reduces energy consumption by 30% compared to the traditional heating balance control mode, saving energy and electricity. The chamber typically consists of a protective structure, air duct system, control system, and indoor testing framework. To better ensure the temperature reduction rate and temperature specifications of the high and low temperature humidity test chamber, a cascade refrigeration unit, which uses imported refrigeration compressors, is selected. This type of refrigeration unit offers advantages such as effective coordination, high reliability, and easy application and maintenance. When using this system, certain details should not be overlooked. What are these details? 1. Strictly abide by the system operation rules to avoid others violating the system operation rules. 2. Non-technical personnel are not allowed to disassemble and repair this machine. If disassembly and repair are required, the operation shall be carried out under the condition of ensuring power off and accompanied by personnel for supervision to avoid accidents. 3. When opening or closing the door or taking or putting the test object out of the test chamber, do not let the test object contact with the rubber edge of the door or the edge of the box to prevent the rubber edge from being worn. 4, the surrounding ground should be kept clean at any time, so as not to suck a lot of dust into the unit to deteriorate working conditions and reduce performance. 5. Attention should be paid to protection during use, and it should not be collided with sharp or blunt objects. The test products placed in the laboratory should be kept at a certain distance from the suction and exhaust air outlets of the air conditioning channel to avoid hindering the air circulation. 6. Prolonged inactivity can reduce the system's effective lifespan, so it should be powered on and operated at least once every 10 days. Avoid frequent short-term use of the system. After each operation, the system should not be restarted more than 5 times per hour, with each start-stop interval being at least 3 minutes. Do not open the door when it is cold to prevent damage to the door seal. 7. After each test, set the temperature near the ambient temperature, work for about 30 minutes, then cut off the power supply, and wipe clean the inner wall of the working room. 8. Regular cleaning of the evaporator (dehumidifier): Due to the different cleanliness levels of the samples, a lot of dust and other small particles will be condensed on the evaporator (dehumidifier) under the action of forced air circulation, so it should be cleaned regularly. 9. The condenser should be maintained regularly and kept clean. Dust sticking to the condenser will make the compressor dissipate heat poorly, resulting in high pressure switch jumping and generating false alarm. The condenser should be maintained regularly. 10. Regularly clean the humidifier to prevent scale buildup, which can reduce its efficiency and lifespan and cause blockages in the water supply lines. To clean it, remove the evaporator panel from the working chamber, use a soft brush to scrub the humidifier, rinse with clean water, and drain promptly. 11. Regularly check the test cloth of the wet bulb. If the surface becomes dirty or hard, replace it to ensure the accuracy of the humidity sensor's readings. The test cloth should be replaced every three months. When replacing it, first clean the water collection head, wipe the temperature sensor clean with a clean cloth, and then replace the test cloth. Ensure your hands are clean when replacing the new test cloth.

  hot Tags : High and Low Temperature Humidity Test Chamber Operation details

  Read More
• High and low temperature humidity test chamber Application

  Jun 03, 2025

  High and low temperature humidity test chamber plays an important role in many industries due to its powerful environmental simulation ability. The following is an overview of its main application industries: ❖ Aerospace is used to test the performance of aircraft, satellite, rocket and other aerospace components and materials under extreme temperature and humidity conditions. ❖ Test the stability and reliability of electronic components, circuit boards, displays, batteries and other electronic products in high temperature, low temperature and humidity environment. ❖ Evaluate the durability of automotive components such as engine parts, electronic control systems, tires, and coatings in harsh environments. ❖ Defense and military use environmental adaptability tests of military equipment and weapon systems to ensure their normal operation under a variety of climatic conditions. ❖ Material science research on the heat resistance, cold resistance and moisture resistance of new materials, as well as their physical and chemical properties under different environmental conditions. ❖ Energy and environmental assessment of the environmental adaptability and weather resistance of new energy products such as solar panels and energy storage equipment. ❖ Transportation test of the performance of components of vehicles, ships, aircraft and other transportation vehicles in extreme environments. ❖ Biomedical testing of the stability and effectiveness of medical devices and drugs under changes in temperature and humidity. ❖ Quality inspection is used for environmental testing and certification of products in the product quality control center.   High and low temperature humidity test chamber helps enterprises and institutions in the above industries to ensure that their products can operate normally in the expected use environment by simulating various extreme conditions that may be encountered in the natural environment, so as to improve the market competitiveness of products.  

  hot Tags : Thermal Shock Test Chamber High and Low Temperature Humidity Test Chamber Temperature and Humidity Chamber Environmental Test Chamber Climatic Test Chamber Electronic Reliability Test Chamber

  Read More
• A high and low temperature humidity test chamber

  Jun 02, 2025

  A high and low temperature humidity test chamber is a device used to test the performance of products in high temperature, low temperature or humid and hot environments. It is widely used in the testing of aerospace products, information electronic instruments and meters, materials, electrical appliances, electronic products, and various electronic components.   Basic Working Principle： ❖ Box structure: usually made of stainless steel or other corrosion-resistant materials, the internal space is used to place the sample under test, and the external control panel and display are installed. ❖ Temperature and humidity control system: including heater, refrigeration system (single stage, double stage or stacked refrigeration), humidification and dehumidification device, as well as sensors and microprocessors to ensure that the temperature and humidity in the box is precisely controllable. ❖ Air circulation system: built-in fans promote air circulation in the box to ensure uniform temperature and humidity distribution. ❖ Control system: microcomputer or PLC controller is used. Users can set the required temperature, humidity and test time through the operation interface, and the system will automatically execute and maintain the set conditions.   Lab Companion was established on May 4, 2005, and is a national high-tech enterprise headquartered in Dongguan, Guangdong Province. The company has two major R&D and manufacturing facilities in Dongguan and Kunshan, covering a total area of 10,000 square meters. It produces approximately 2,000 environmental test equipment units annually. The company also operates sales and maintenance service centers in Beijing, Shanghai, Wuhan, Chengdu, Chongqing, Xi 'an, and Hong Kong. Hongzhan has always been dedicated to the technology of environmental test equipment, continuously striving for excellence to create reliability that meets international standards. Its customers span various industries, including electronics, semiconductors, optoelectronics, communications, aerospace, machinery, laboratories, and automotive. From product development to after-sales service, every step is guided by the customer's perspective and needs.  

  hot Tags : High and Low Temperature Humidity Test Chamber Basic Working Principle Lab Companion

  Read More