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  • What should we pay attention to when using a thermal shock test chamber (water-cooled)?
    Nov 22, 2025
    I. Before Operation Use deionized water or distilled water as cooling water (to prevent scale formation); control temperature at 15-30℃, pressure at 0.15-0.3MPa, flow rate ≥5L/min. Clean the Y-type filter element in advance to ensure unobstructed water flow. Inspect water supply/drainage pipelines for secure connections, no leakage or kinking; keep drainage ports unobstructed with a height difference ≥10cm. Ensure the environment is ventilated and dry, grounding resistance ≤4Ω, and power supply (AC380V±10%) stable. Keep the inner chamber and shelves clean. Sample volume ≤1/3 of effective capacity, with weight evenly distributed on shelves. Seal moisture-sensitive parts of non-hermetic samples to avoid condensation affecting test accuracy. II. During Operation Real-time monitor cooling water pressure, flow rate and temperature. Immediately shut down for troubleshooting (pipeline blockage, leakage or chiller failure) if pressure drops sharply, flow is insufficient or temperature exceeds 35℃. Set high/low temperature parameters per GB/T, IEC and other standards (not exceeding rated range); control heating/cooling rate ≤5℃/min. Prohibit instantaneous switching between extreme temperatures. Do not open the door arbitrarily during operation (to prevent scalding/frostbite from hot/cold air). Use protective gloves for emergency sample handling. Shut down immediately for maintenance upon alarm (overtemperature, water shortage, etc.); prohibit forced operation. III. After Test Turn off power and cooling water inlet/outlet valves; drain residual water in pipelines. Clean the water tank and replace water monthly; add special water stabilizer to extend pipeline service life. Wipe the inner chamber and shelves after temperature returns to room temperature. Clean the air filter (1-2 times monthly); inspect pipeline seals and replace aging/leaking ones promptly. For long-term non-use: Power on and run for 30 minutes monthly (including water cooling system circulation), inject anti-rust protection fluid into pipelines, and cover the equipment with a dust cover in a dry, ventilated place. IV. Prohibitions Prohibit using unqualified water (tap water, well water, etc.) or blocking filters/drainage ports (to avoid affecting heat dissipation). Prohibit overloading samples or unauthorized disassembly/modification of water cooling pipelines/core components. Repairs must be performed by professionals. Prohibit frequent start-stop (wait ≥5 minutes after shutdown before restarting). Prohibit placing flammable, explosive or corrosive substances.
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  • Industrial Precision Ovens: The Key to Precise Temperature Control
    Nov 21, 2025
    In modern industrial manufacturing, industrial precision ovens are key "temperature artisans". They are widely used in electronics, aerospace, automotive, medical and other fields, providing stable performance and reliable quality for products. Gaining an in-depth understanding of their principles not only clarifies the scientific logic of industrial production, but also helps practitioners use equipment efficiently to improve benefits. (I) Heating System: The Source of Heat The heating system is the "heat source core" of the oven. The thermostat controls the thyristor through signals to adjust the heater power and regulate heat output: full power is supplied when the temperature is much lower than the set value, power gradually decreases when approaching the set value, and output stops when the set value is reached. This is energy-efficient and achieves high temperature control precision. (II) Air Circulation System: The Messenger of Heat Transfer Composed of a blower motor, extended shaft and multi-wing fan blades, the air circulation system is critical for heat transfer. The motor drives the wind wheel to rotate and form air flow, which is evenly delivered to all areas of the oven through optimized air ducts, avoiding dead corners and temperature differences. Hot air fully contacts materials during circulation to achieve rapid and uniform heating, which is essential for high-precision processes such as electronic chips and optical lenses. (III) Electrical Control System: The Core of Precise Operation The electrical control system is the core control unit of the oven. The Q8 series electrical control system adopts full-touch operation with a control precision of 0.01 level and supports multiple sensor adaptations. It has 100 built-in processes (50 steps per group), including EVT, cold output and transmission output functions. The DO channel features safe isolation and arc suppression design, enabling convenient, accurate and reliable operation that adapts to diverse control scenarios. Future Outlook: Technological Innovation Leads Development In the future, industrial precision ovens will focus on three major innovation directions: intelligence, energy conservation and environmental protection, and special process adaptation, continuously innovating to shape a new industrial future.          
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  • Maintenance Methods for Industrial Precision Oven
    Nov 20, 2025
    As core industrial equipment for precise temperature control, drying and curing, precision ovens’ operational stability directly impacts product quality and production efficiency. Scientific maintenance extends service life and ensures process parameter accuracy. Below are key methods divided into daily basic maintenance and regular in-depth maintenance. I. Daily Basic Maintenance: Safeguard Fundamental Operation Daily maintenance, the first line of stable operation defense, is performed before startup, during operation and after shutdown—simple yet critical. 1. Comprehensive Cleaning: Eliminate Impurities Wipe the oven cavity, shelves and door seal daily to remove debris, dust, cured stains or oil. Use neutral detergent and a clean cloth to avoid cavity corrosion. Regularly clean the exterior and heat dissipation holes for unobstructed heat dissipation. 2. Parameter & Safety Checks: Ensure Accuracy and Safety Verify that temperature controller, timer and other parameters match process requirements before startup, and check for stable display without drift. Inspect door interlock sensitivity, power cords, heating tube terminals and cooling fan for abnormalities. Confirm emergency stop buttons and over-temperature protection devices function properly to eliminate hidden dangers. 3. Standardized Operation: Reduce Human-induced Wear Avoid overloading workpieces and ensure proper spacing for hot air circulation to prevent local overheating. Follow the manual for temperature rise/drop—no sudden startup/shutdown or drastic adjustments to avoid furnace cracking. Turn off main power only when temperature drops below 50℃ to extend heating element life. II. Regular In-depth Maintenance: Enhance Core Performance Recommended monthly or quarterly, regular maintenance focuses on core components and requires professional technicians. 1. Heating & Circulation System Overhaul: Ensure Efficiency Inspect heating tubes for oxide layers, scale or abnormal resistance (replace if needed), and clean/fasten junction box terminals with insulating grease. Disassemble fan impellers to remove dust and oil, lubricate bearings, replace damaged seals and adjust air duct baffles for uniform hot air circulation. 2. Temperature Control Calibration: Improve Accuracy Calibrate temperature sensors with a standard thermometer—adjust parameters or replace sensors if deviation is excessive. Inspect signal transmission lines for interference or poor contact. Verify multi-stage heating curve accuracy for programmable ovens. 3. Furnace Structure Maintenance: Extend Service Life Check insulation layers for damage and refill insulation material if heat dissipation is abnormal. Replace aged or deformed door seals. Repair the cavity’s high-temperature resistant coating to prevent rusting.
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  • 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.
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  • Walk-in Environmental Test Chambers: The Hidden Tech Gem in Industrial Testing
    Nov 18, 2025
    In industrial manufacturing's "quality defense line", walk-in environmental test chambers are low-key yet critical. As "environmental simulation masters", they replicate extreme conditions from polar cold to tropical heat, testing large equipment and batch products. Their hidden technical strengths merit in-depth exploration. I. Spacious Interior for Flexible Adaptation to Diverse Testing Needs The "walk-in" design is a core breakthrough. With  several to dozens of cubic meters of space, it accommodates large products (automotive parts, electronic devices) and enables batch testing of small/medium items. New energy vehicle battery packs and rail transit systems can be tested integrally without disassembly. Flexible racks and zoning fit various sample shapes, solving traditional equipment's "unfit and unstable" issues. II. Precise Temperature Control for Highly Simulating Diverse Extreme Environments Precise temperature control is its core advantage, with a temperature range of -70℃ to 250℃ and humidity of 20%RH to 98%RH, replicating high-altitude, desert and coastal environments. Using PID algorithms and multi-point sensing, temperature/humidity fluctuations are controlled within ±0.5℃ and ±2%RH, ensuring reliable data. It simulates high-altitude conditions for aerospace and verifies consumer electronics' performance in extremes to support product iteration. III. Energy Conservation and Environmental Protection for Long-term Operating Cost Optimization To address high energy consumption, it adopts variable frequency compressors and low-power heating modules for intelligent power adjustment. Double-layer vacuum insulation reduces heat exchange, and high-end models feature waste heat recovery. Energy consumption is cut by over 30% vs. traditional equipment, saving tens of thousands in annual electricity costs. Stable operation lowers maintenance needs and extends service life, reducing long-term costs. IV. Structural Selection and Customization Services Lab Companion's walk-in chambers have two main structures: integral welded and assembled, with diverse specifications compatible with multiple refrigerants. Assembled models use independent panels fixed by interlocks and reinforcing bolts, simplifying transportation and installation. Integral welded models offer better performance, with wider temperature/humidity ranges and faster temperature change rates. In addition, you can choose a suitable model based on your needs. Lab Companion provides customized services if existing specifications are insufficient . V. Conclusion: The "Core Driving Force" for Industrial Quality Upgrading With large space, precise control, energy efficiency and durability, these chambers are industrial testing's "quality stewards". Critical for improving product reliability in manufacturing transformation, they will upgrade to more precise and intelligent versions to empower industrial high-quality development.
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  • Sample Restrictions for All Models of Test Chambers
    Nov 17, 2025
        As core equipment in industrial production and scientific research that accurately simulates complex environmental conditions such as high and low temperatures, and humidity, the safe and stable operation of test chambers not only directly affects the test process, but is also closely related to the characteristics of test samples. To maximize the protection of the performance of the equipment's core components, avoid safety risks during operation, and ensure the accuracy and reliability of the final test data, all models of test chambers have established clear and strict restriction standards for sample selection. Testing and storage of the following models of samples are strictly prohibited. The specific prohibited scope includes: • Flammable substances such as gasoline and ethanol, explosive substances such as gunpowder and acetylene, and volatile substances such as methanol and ether; • Corrosive substances such as strong acids, strong alkalis and various corrosive solvents that may damage the equipment cavity; • Biological samples such as microorganisms, cell tissues and living organisms that may cause pollution or safety hazards; • Samples that are strong electromagnetic emission sources such as high-frequency emission modules, which may interfere with the equipment's control system; • Radioactive substances with radiation hazards such as uranium and cobalt; • Highly toxic substances that pose serious hazards to humans and the environment, such as cyanides and highly toxic pesticides; • All models of samples that may generate flammable, explosive, volatile, highly toxic, corrosive, or radioactive substances due to changes in temperature and humidity during the testing or storage process.     Before starting the test chamber, operators must confirm the specific properties of the samples through professional testing methods or authoritative materials, and strictly abide by the above restriction requirements. If there is any doubt in judging the applicability of the samples, they should consult the technical personnel of the equipment manufacturer or experts in related fields immediately, and must not operate blindly based on experience. This is to avoid equipment cavity damage, control system failure, safety accidents, or serious deviations in test data caused by illegal use.
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  • User Preparation Before Delivery of High and Low Temperature (Humidity) Test Chamber
    Nov 15, 2025
    1. Preparation for Load-bearing and Dimensional Adaptation • The load-bearing capacity of the site floor shall strictly meet the core requirement of ≥500kg/m², which is a key prerequisite for ensuring the long-term stable operation of the equipment and avoiding equipment deformation or safety hazards caused by insufficient load-bearing capacity. • It is necessary to accurately confirm the external dimensions of the test chamber specified in the technical specification in advance. Combined with the on-site actual survey of the transportation and installation path, ensure that the equipment can smoothly pass through all key passage nodes such as elevators, laboratory doors and corridors, so as to avoid delay in delivery and installation due to inconsistent dimensions. 2. Preparation for Installation Site Conditions • The floor of the installation site shall be flat without protrusions and depressions, and the ventilation conditions shall meet the basic standards for equipment operation. At the same time, there shall be no flammable, explosive, corrosive gases or dust in the environment, as such substances will seriously affect the service life of equipment components and the accuracy of test data. • Strong electromagnetic radiation sources such as high-voltage lines and large motors should be actively avoided near the equipment installation location, as strong electromagnetic interference may cause disorder of the equipment control system, thereby affecting the temperature and humidity control accuracy of the test chamber. • A floor drain that meets the drainage standards must be provided within 2 meters of the equipment's refrigeration unit. This requirement is to timely discharge the condensed water generated during the operation of the refrigeration system, so as to avoid water accumulation soaking the equipment or polluting the site environment. • Sufficient maintenance and operation space shall be reserved around the equipment in accordance with specifications. The specific requirements strictly follow the following standards: Area A ≥80cm, Area B ≥60cm, Area C ≥110cm, Area D ≥110cm. Sufficient space is a necessary guarantee for later equipment maintenance, calibration and component replacement.
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  • High-Low Temperature and Humidity Test Chamber: Comprehensive Safety Protection
    Nov 14, 2025
    Widely used in electronics, automotive, aerospace, etc. It tests product reliability by simulating extreme environments and is key equipment for product quality and safety. 1. Refrigeration system safety protection Compressor overpressure protection: Activates pressure relief when overpressure, preventing explosion and ensuring safety. Compressor overheating protection: Monitors temperature in real time, cuts power when exceeding threshold to avoid burnout and extend life. Compressor over-current protection: Monitors current, cuts power when exceeding rated value to prevent overload or motor damage. 2. Test area safety protection Adjustable over-temperature protection: Flexible threshold setting, automatically controls temperature (reduces power, starts cooling) when exceeding, protecting samples and equipment. First-layer high/low temperature over-temperature protection: Sets high/low temperature protection values for operating temperature, stops heating/cooling when exceeding range. Second-layer high-temperature over-temperature protection: Electronic device with high-precision detection, cuts heating power when exceeding first-layer range. Third-layer high-temperature over-temperature protection: Last barrier, cuts all heating power and alarms when first two layers fail. Fault protection: Cuts control power when faulty, indicates cause and outputs alarm for easy troubleshooting. 3. Other safety protections Total power phase sequence and open-phase protection: Monitors phase sequence and open-phase, cuts power when abnormal to prevent damage. Short-circuit protection: Quickly cuts circuit (fuse blowing, breaker tripping) during short circuit to avoid fire, etc. Leakage/surge protection: ELB prevents electric shock, fuse protects circuit, RC device suppresses surges. Water-cut and dry-burning protection: Cuts power for humidity-related equipment and electric heating when water is cut off to prevent dry burning. 4. Summary     The safety protection system of the high-low temperature and humidity test chamber covers core working units and key auxiliary links, forming a comprehensive and multi-level protection closed loop. Through accurate monitoring, rapid response and effective intervention, each protection device not only ensures the long-term stable operation of the equipment and extends its service life, but also safeguards the safety of test samples and personnel operation. It serves as the core support for reliable test processes and accurate results, building a solid safety barrier for product quality verification.
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  • Differences between High and Low Temperature Test Chamber and Constant Temperature Test Chamber
    Nov 13, 2025
        In environmental reliability testing, high-low temperature humidity test chambers and constant temperature and humidity test chambers are easily confused due to similar names, but they differ significantly in testing capabilities, applications and technical characteristics. Accurate distinction and selection are key to ensuring valid test data. This blog will analyze the core differences and provide selection suggestions. I. Core Definition: Essential Distinction of Functional Boundaries     The core difference between the two starts with functional positioning, which directly determines the applicable scenarios.     The core of the constant temperature and humidity test chamber is "maintaining stability". It can accurately control and maintain the set temperature and humidity for a long time, and is used to simulate the long-term performance of products in specific environments, such as electronic component stability testing and textile temperature-humidity sensitivity testing. Its core requirement is "steady-state environmental performance verification".     The high-low temperature humidity test chamber focuses on "dynamic simulation". In addition to precise temperature and humidity control, it has a wide-range fluctuation capability, which can simulate environments such as high-low temperature cycles and alternating humidity and heat, such as extreme temperature differences during product transportation and diurnal temperature-humidity changes of outdoor equipment. Its core requirement is "dynamic environmental reliability verification". II. Key Differences: Multi-dimensional Analysis from Technology to Application 1. Temperature and Humidity Range and Fluctuation Capacity     The constant temperature and humidity chamber has a mild temperature and humidity range (temperature 0℃-100℃, humidity 30%-95%RH) and high control precision (temperature fluctuation ±0.5℃, humidity ±2%RH), but no extreme temperature-humidity impact capability.     The high-low temperature humidity chamber has a wider temperature and humidity coverage (temperature -70℃~200℃, humidity 10%-98%RH) and rapid change capability (heating rate 3℃/min-15℃/min, cooling rate 1℃/min-10℃/min), which can realize rapid cycle switching between "high temperature and high humidity - low temperature and low humidity"—a feature unavailable in the former. 2. Differences in Core Technical Architecture     The constant temperature and humidity chamber adopts single-stage compression refrigeration, conventional resistance heating, and steam or ultrasonic humidification. Its system design focuses on "energy saving and stability", with simple structure and low operating cost.     To meet extreme needs, the high-low temperature humidity chamber uses cascade refrigeration, rapid-heating tubes, and its humidity system includes a fast-response dehumidification module, with a thicker insulation layer on the chamber wall. Its technical complexity and manufacturing cost are much higher than the former. 3. Applicable Scenarios and Testing Purposes     The constant temperature and humidity chamber is used for steady-state environmental adaptability testing, such as electronic component aging and pharmaceutical storage simulation, to verify the performance consistency and durability of products in a fixed environment.     The high-low temperature humidity chamber focuses on dynamic reliability testing, such as high-low temperature cycling of auto parts and extreme environment simulation of aerospace products, to expose product defects (material aging, structural deformation, etc.) under drastic environmental changes.     In summary, the constant temperature and humidity chamber guards the steady-state environment, while the high-low temperature humidity chamber challenges the dynamic environment. There is no absolute advantage or disadvantage between the two. Only by matching needs, clarifying scenarios and budgets can the test truly guarantee product quality.
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  • Top Environmental Test Chamber Partner, Your Trusted Choice
    Nov 08, 2025
        Environmental test chambers simulate complex conditions such as high/low temperatures and humidity, widely serving industries including electronics, automotive, aerospace, materials, and medical devices. Their core function is to verify the tolerance of products and materials, enabling early defect detection, ensuring product reliability, facilitating industry compliance, and reducing after-sales costs. They are critical equipment for R&D and quality control.     Founded in 2005, Lab Companion specializes in the R&D and manufacturing of environmental simulation equipment. Since its establishment, the company has deeply cultivated core technologies and obtained multiple patent certifications, demonstrating strong technical capabilities in this field. Our cooperative clients cover numerous industries such as aviation, aerospace, ordnance, marine engineering, nuclear power, communications, automotive, rail transit, electronics, semiconductors, and new energy.         Lab Companion offers a comprehensive product portfolio, including high-low temperature alternating humidity test chambers, rapid temperature change test chambers, thermal shock test chambers, walk-in environmental test chambers, high-low temperature low-pressure test chambers, temperature-humidity-vibration combined test chambers, and customized non-standard environmental test equipment. Each product line provides multiple options for models, sizes, and temperature-humidity parameters to accurately meet diverse application needs.         In addition, we deliver premium pre-sales and after-sales services, offering full-cycle support from product selection to after-sales guarantee to ensure your peace of mind. Should you have any cooperation intentions or related inquiries, please feel free to contact us at any time!
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  • Ứng dụng của đồng hồ đo lưu lượng nhiệt độ Ứng dụng của đồng hồ đo lưu lượng nhiệt độ
    Jul 09, 2025
    Lưu lượng kế nhiệt độ là một thiết bị đo chính xác được sử dụng để đo lưu lượng khí và nhiệt độ, được ứng dụng rộng rãi trong giám sát môi trường, hệ thống điều hòa không khí, sản xuất công nghiệp và các lĩnh vực liên quan. Nguyên lý cơ bản của nó là phát hiện các biến động nhiệt độ do dòng khí gây ra để tính toán chính xác vận tốc và thể tích dòng khí, từ đó cung cấp cho người dùng dữ liệu hỗ trợ chính xác. Các tính năng chính của thiết bị nằm ở độ chính xác cao và phản hồi nhanh. Thường được trang bị các cảm biến tiên tiến, thiết bị có thể nhanh chóng nắm bắt những thay đổi nhỏ về lưu lượng và cung cấp phản hồi theo thời gian thực. Độ chính xác đo lường của thiết bị vẫn vượt trội ngay cả trong điều kiện môi trường phức tạp, điều này đặc biệt quan trọng đối với các ứng dụng công nghiệp yêu cầu kiểm soát chặt chẽ lưu lượng khí và nhiệt độ. Ngoài ra, việc vận hành lưu lượng kế nhiệt độ tương đối đơn giản—người dùng chỉ cần cấu hình cơ bản để có được dữ liệu cần thiết. Thiết kế thân thiện với người dùng này giúp cả người dùng chuyên nghiệp và người dùng phổ thông đều dễ dàng vận hành. Nhiều mẫu máy hiện đại còn được trang bị màn hình kỹ thuật số với giao diện trực quan, cho phép người dùng nhanh chóng nắm bắt trạng thái hiện tại và nâng cao khả năng sử dụng. Thiết bị này thể hiện độ ổn định tuyệt vời, duy trì các phép đo nhất quán trong thời gian dài mà không bị sai lệch đáng kể, đảm bảo độ tin cậy của dữ liệu. Với những tiến bộ công nghệ liên tục, nhiều thiết bị hiện nay tích hợp chức năng lưu trữ và truyền dữ liệu, cho phép người dùng xem xét và phân tích dữ liệu lịch sử sau khi kiểm tra để đưa ra quyết định sáng suốt. Tóm lại, máy đo gió nhiệt đã trở thành một công cụ không thể thiếu trong nhiều ngành công nghiệp nhờ độ chính xác cao, phản hồi nhanh, vận hành thân thiện và độ ổn định tuyệt vời. Trong cuộc sống hàng ngày và môi trường chuyên nghiệp, việc thành thạo thiết bị này không chỉ nâng cao hiệu quả công việc mà còn hỗ trợ đắc lực cho nghiên cứu khoa học và các ứng dụng kỹ thuật. Là một công nghệ đo lường thiết yếu trong khoa học hiện đại, nó đóng vai trò then chốt trong sự phát triển công nghệ.
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  • Tôi phải làm gì nếu buồng thử nhiệt độ cao và thấp gặp sự cố? Tôi phải làm gì nếu buồng thử nhiệt độ cao và thấp gặp sự cố?
    Jun 23, 2025
    Buồng thử nhiệt độ cao và thấp có thể gặp phải nhiều vấn đề khác nhau trong quá trình sử dụng, sau đây là tóm tắt các lỗi tiềm ẩn và nguyên nhân của chúng từ nhiều góc độ khác nhau:1. Lỗi hệ thống lõiNhiệt độ ngoài tầm kiểm soátNguyên nhân: Các thông số điều khiển PID mất cân bằng, nhiệt độ môi trường vượt quá phạm vi thiết kế của thiết bị, nhiễu nhiệt độ nhiều vùng.Trường hợp: Trong một xưởng có môi trường đặc biệt, nhiệt độ cao bên ngoài khiến hệ thống làm lạnh bị quá tải, dẫn đến hiện tượng nhiệt độ trôi.Độ ẩm bất thườngNguyên nhân: chất lượng nước tạo ẩm kém dẫn đến đóng cặn và tắc vòi phun, hỏng tấm áp điện của máy tạo ẩm siêu âm và không tái tạo được chất hút ẩm không hoàn toàn.Hiện tượng đặc biệt: ngưng tụ ngược xảy ra khi thử nghiệm độ ẩm cao, khiến độ ẩm thực tế trong hộp thấp hơn giá trị cài đặt.2. Các vấn đề về cơ học và kết cấuLuồng không khí không được tổ chứcHiệu suất: Có sự chênh lệch nhiệt độ hơn 3℃ ở khu vực mẫu.Nguyên nhân gốc rễ: giá mẫu tùy chỉnh đã thay đổi thiết kế ban đầu của ống dẫn khí và bụi bẩn tích tụ trên cánh quạt ly tâm dẫn đến phá hủy sự cân bằng động. lỗi niêm phongLỗi mới: lực từ của cửa gioăng điện từ giảm ở nhiệt độ thấp, dải gioăng silicon trở nên giòn và nứt sau -70℃.3. Hệ thống điện và điều khiểnLỗi điều khiển thông minhMức độ phần mềm: Sau khi nâng cấp chương trình cơ sở, lỗi cài đặt vùng chết nhiệt độ xảy ra và dữ liệu lịch sử tràn khiến chương trình bị sập.Mức độ phần cứng: Rơ le bán dẫn SSR bị hỏng gây ra hiện tượng nóng liên tục và giao tiếp bus bị nhiễu điện từ của biến tần.Lỗ hổng bảo mậtNguy cơ tiềm ẩn: sự cố đồng bộ của rơ le bảo vệ nhiệt độ ba lần và báo động giả do hết hạn hiệu chuẩn của bộ dò chất làm lạnh.4. Thách thức của điều kiện làm việc đặc biệtSốc nhiệt độ riêngVấn đề: Chuyển đổi nhanh nhiệt độ từ -40℃ đến +150℃ gây nứt ứng suất mối hàn của bộ bay hơi, hệ số giãn nở nhiệt khác nhau dẫn đến hỏng phớt cửa sổ quan sát.Suy giảm hoạt động dài hạnHiệu suất giảm: sau 2000 giờ hoạt động liên tục, sự mài mòn của tấm van máy nén dẫn đến giảm 15% công suất làm lạnh và làm trôi giá trị điện trở của ống gia nhiệt bằng gốm.5. Tác động đến môi trường và bảo trìThích ứng cơ sở hạ tầngTrường hợp: Dao động điện của bộ gia nhiệt PTC do điện áp nguồn cung cấp thay đổi và hiệu ứng búa nước của hệ thống nước làm mát làm hỏng bộ trao đổi nhiệt dạng tấm.Điểm mù bảo trì phòng ngừaBài học: Việc bỏ qua áp suất dương của hộp sẽ dẫn đến nước tràn vào buồng chứa và màng sinh học phát triển cũng như tắc nghẽn trong ống xả nước ngưng tụ.6. Những điểm khó khăn của công nghệ mới nổiỨng dụng chất làm lạnh mớiThách thức: các vấn đề về khả năng tương thích dầu hệ thống sau khi R448A thay thế R404A và các vấn đề về niêm phong áp suất cao của hệ thống làm lạnh CO₂ dưới tới hạn.Rủi ro tích hợp IoTLỗi: Giao thức điều khiển từ xa bị tấn công ác ý, dẫn đến chương trình bị can thiệp và lưu trữ đám mây bị lỗi, gây mất chuỗi bằng chứng thử nghiệm.Khuyến nghị chiến lượcChẩn đoán thông minh: cấu hình máy phân tích rung động để dự đoán lỗi ổ trục máy nén và sử dụng máy ảnh nhiệt hồng ngoại để quét các điểm kết nối điện thường xuyên.Thiết kế độ tin cậy: các thành phần chính như bộ phận bay hơi được làm bằng thép không gỉ SUS316L để cải thiện khả năng chống ăn mòn và các mô-đun điều khiển nhiệt độ dự phòng được thêm vào hệ thống điều khiển.Đổi mới bảo trì: triển khai kế hoạch bảo trì năng động dựa trên giờ hoạt động và thiết lập hệ thống kiểm tra độ tinh khiết của chất làm lạnh hàng năm.Giải pháp cho những vấn đề này cần được phân tích kết hợp với mô hình cụ thể của thiết bị, môi trường sử dụng và lịch sử bảo trì. Khuyến nghị thiết lập cơ chế bảo trì hợp tác bao gồm OEM của thiết bị, các tổ chức kiểm tra bên thứ ba và đội ngũ kỹ thuật người dùng. Đối với các hạng mục kiểm tra quan trọng, khuyến nghị cấu hình hệ thống dự phòng nóng hai máy để đảm bảo tính liên tục của quá trình kiểm tra.
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