The stable operation of Guangdong LabCompanion TS2 (two-chamber type) and TS3 (three-chamber type) series thermal shock test chambers relies on standardized maintenance. Combining the structural commonalities of the two equipment series and the differences such as the exclusive damper assembly of TS3, this document sorts out the core maintenance essentials and provides practical operation guidelines.
I. Daily Maintenance: Mandatory Items After Daily/Each Test
Applicable to both series, the core of daily maintenance is to identify basic hazards, which shall be completed after daily/each test as follows:
1. Cleaning and Environment Arrangement: Cut off the power after the test; wait for the chamber to return to normal temperature, then wipe the inner tank (SUS304 material) and outer shell with a dry soft cloth; ensure the ventilation and heat dissipation ports are unobstructed, reserve a heat dissipation space of ≥30cm around the equipment, and avoid debris accumulation.
2. Basic Status Check: Inspect that the door sealing gasket is intact and undamaged; confirm that the sample rack/basket (TS2) and test rack (TS3) are free of looseness and deformation, and the pneumatic moving mechanism of TS2 operates smoothly; check that the line connections are firm and undamaged, and the refrigeration pipeline has no abnormal frosting or leakage traces.
3. Preliminary Consumable Inspection: Check if the air filter is clogged, and promptly blow it clean with compressed air or rinse it with clean water and dry it; additionally clean the observation window glass for TS3 to ensure clear visibility.
II. Regular Maintenance: Cycle-Based Precise Maintenance (Summary in Table)
Maintenance Cycle
Core Items
Differences Between TS2/TS3
Weekly
1. Clean the air filter (replace every 3 months); 2. Clean the heat sink of the refrigeration condenser; 3. Check the operation status of core mechanisms
TS2: Check that the air pressure of the pneumatic moving mechanism is stable without abnormal noise; TS3: Check that the damper assembly switches smoothly and the gasket does not fall off
Monthly
1. Check that the terminals of the heating element are firm and free of oxidation; 2. Test over-temperature, overload, leakage and other protection functions; 3. Check the status of transmission/ventilation components
TS2: Check the lubrication of the basket guide rail; apply high-temperature grease if stuck; TS3: Check that the circulating fan has no abnormal noise and clean the dust on the blades
Quarterly
1. Professionally inspect the refrigeration system and test the refrigerant pressure; 2. Check the lubricating oil level of the compressor; 3. Calibrate the temperature control accuracy; 4. Inspect the sealing components
TS3: Disassemble and inspect the gasket of the damper assembly; replace it promptly if aged or worn
III. Special Maintenance for Core Components
1. Refrigeration System Maintenance (Common to TS2 and TS3): Avoid frequent start-stop of the refrigeration system (wait for ≥5 minutes after shutdown before restarting); run for 30 minutes every month during long-term shutdown to prevent compressor seizure; regularly check pipeline joints for leakage with soapy water, and prohibit starting the compressor without sufficient refrigerant.
2. Control System Maintenance (Common to TS2 and TS3): Clean the control panel to prevent liquid ingress; check that the PLC/sensor wiring is firm and clean the probe; back up test programs regularly, and verify the connection of remote communication lines (if any).
3. Exclusive Mechanism Maintenance (Differences): TS2: Maintain the pneumatic moving mechanism, check that the cylinder/solenoid valve has no air leakage, and inspect the drive motor windings annually for insulation; TS3: Check the air pressure of the damper drive cylinder every six months, clean the guide rail and apply lubricating grease, and replace aged seals.
IV. Fault Prevention and Emergency Handling
1. Prevention Points: Do not overload the equipment; samples shall be dry and non-corrosive; avoid long-term continuous operation at extreme temperatures; cut off the power, prevent dust and keep the environment dry and ventilated during long-term shutdown.
2. Emergency Principles: Immediately press the emergency stop button and cut off the power in case of abnormality; do not force restart; simply check the filter/condenser/sealing gasket; contact the official LabCompanion after-sales service if the problem cannot be solved, and prohibit non-professional personnel from disassembling core components.
V. Maintenance Records and Notes
Establish a maintenance ledger to record the date, items, problems and handling results; must cut off the power to prevent electric shock during maintenance; use compliant consumables, and contact the official for inspection and calibration annually to ensure compliance with national and military standards.
Summary: The core of maintenance for both equipment is "daily hazard prevention, regular core maintenance, and exclusive differentiation". Standardized operation can ensure stable operation, accurate testing, extend service life and reduce operation and maintenance costs.
With the accelerated iteration of the consumer electronics industry, the requirements for the efficiency and accuracy of reliability testing have been upgraded. Guangdong Lab Companion's Rapid Temperature Change Test Chamber, positioned as a dedicated equipment for accelerated life testing, shortens the cycle with ultra-high heating and cooling rates and ensures screening effectiveness through precise temperature control. It is highly adaptable to industry needs, helping enterprises quickly complete quality verification and seize market opportunities.
I. Core Efficiency Advantage: 10℃/min Rate, Reducing Test Cycle by 50%
Centered on efficient accelerated testing, the equipment breaks through the efficiency bottleneck of traditional equipment and matches the rapid iteration rhythm of the industry:
l Ultra-high heating and cooling rate (10℃/min): Adopting the coordinated design of cascade refrigeration system and high-efficiency heating tube, it can quickly switch from -40℃ to 85℃, reducing the test cycle by 50% compared with traditional equipment (1-3℃/min). For example, the mobile phone motherboard test is shortened from 48 hours to 24 hours;
l Adapting to iteration needs: Assists multiple rounds of rapid verification in the R&D stage and mass screening in the mass production stage to avoid market launch delays;
l Wide temperature range coverage (-70℃~150℃): Simulates different climate scenarios around the world without the need to replace equipment, improving test efficiency.
II. Precision Control Advantage: Stable Temperature Change for Efficient Defect Screening
l While ensuring high efficiency, it achieves precision through refined design to guarantee stable temperature change and accurate screening:
High-precision temperature control: PID closed-loop control + platinum resistance sensor, temperature fluctuation ≤±0.5℃ without overshoot, accurately exposing potential defects such as loose solder joints;
l Uniform temperature field: Optimized air duct and fan design, temperature uniformity ≤±2℃, ensuring consistent and comparable mass test data;
l Multiple safety protections: Over-temperature, over-voltage, leakage protection, etc., avoiding equipment failures and sample damage, ensuring continuous and safe testing.
III. Industry Case: 30% Reduction in Defect Rate
A leading mobile phone manufacturer introduced the equipment for testing core components, achieving remarkable results: In the R&D stage, it completed the temperature change test that traditionally takes 60 days in only 30 days, quickly identifying and optimizing display defects; In the mass production stage, it accurately screened defective components, reducing the final product defect rate by 30% and improving test efficiency by 50%, greatly lowering after-sales costs and brand risks.
IV. Summary of Core Value
Guangdong Lab Companion's Rapid Temperature Change Test Chamber takes 10℃/min rate as the core of efficiency and precise temperature control + uniform temperature field as the guarantee for screening, adapting to the iteration and high-quality requirements of consumer electronics. By reducing the test cycle by 50% and the defect rate by 30%, it provides core support for enterprises in R&D acceleration, cost control and quality improvement, and is a reliable partner for enterprises to enhance competitiveness.
High and low temperature test chambers are the "invisible guardians" in industrial production and scientific research innovation. They can simulate extreme environments to test product reliability, from small mobile phone chips to large automotive components. Starting from basic cognition, core parameters, industry trends, and usage misunderstandings, this article interprets their value and Labcompanion's practice.
I. Basic Cognition: The "Environmental Tester" for Product Quality
High and low temperature test chambers simulate natural environments by artificially regulating temperature, exposing performance defects of products under extreme temperature conditions in advance, helping enterprises optimize designs before mass production and avoid recall risks. Their applications cover electronic and electrical, medical, automotive, scientific research institutions and other fields, with test objects including PCB boards, monitors, automotive sensors, etc.
II. Key Parameters: Core Indicators for Selecting the Right Equipment
Core parameters determine equipment adaptability, with key indicators as follows:
1. Temperature control accuracy (deviation ±0.1℃~±0.5℃, high precision suitable for scientific research/high-end manufacturing);
2. Temperature uniformity (high-quality equipment ≤±2℃, high-end models ≤±1℃);
3. . Temperature range (conventional -40℃~150℃, special scenarios up to -80℃~200℃+);
4. Temperature change rate (10℃/min+ rapid temperature change can shorten test cycles);
5. Volume (from dozens of liters of desktop to dozens of cubic meters of walk-in, suitable for different scenarios).
III. Industry Trends: Green, Intelligent and Customized as the Mainstream
With industry upgrading, three major trends highlight competitiveness: 1. Green energy saving: Adopting environmentally friendly refrigerants, optimized refrigeration cycle and other technologies, energy consumption can be reduced by 20%+; 2. Intelligent interconnection: Realizing remote monitoring, automatic data collection and analysis, suitable for digital management; 3. Customization: Providing personalized designs for medical sterility, new energy explosion-proof and other needs.
IV. Usage Misunderstandings: Four Major Pitfalls to Avoid
1. The temperature change rate is not the faster the better; it needs to match product characteristics and test standards;
2. Uniformity cannot be ignored; uneven temperature field will lead to result deviation; 3. Regular maintenance is indispensable, otherwise it will affect accuracy and increase energy consumption;
4. The load capacity should not exceed 30% of the chamber volume to avoid damaging temperature field uniformity.
V. Labcompanion: A Quality Practitioner Following Trends
Labcompanion focuses on R&D and practices the three major trends: In terms of green energy saving, it adopts environmentally friendly refrigerant R449A and cascade refrigeration + CO₂ working fluid technology, reducing energy consumption by 28%~38% and obtaining provincial energy-saving certification; In terms of intelligence, it is equipped with an AI intelligent control system, supporting remote monitoring and automatic data analysis, with preset 200+ test programs; In terms of customization, it provides customized temperature range, chamber structure, etc., covering the needs of various industries. Its equipment has excellent core parameters: temperature control accuracy ±0.1℃~±0.3℃, uniformity ≤±1.5℃, temperature range -80℃~200℃. Relying on 20 years of experience, it provides full-process services from demand analysis to maintenance.
High and low temperature test chambers bear the responsibility of ensuring product quality. Accurately understanding core information can help select equipment and avoid pitfalls. Labcompanion creates trend-compliant equipment through technological innovation, providing support for quality upgrading in various industries.
1. There are significant differences in test standards across industries (e.g., ISO, GJB, FDA). Can the equipment directly meet multi-standard compatibility without manual parameter adjustment?
Answer: The core pain point is that standard adaptability affects certification applications. Hongzhan is built with a library of over 200 industry standard programs (including ISO 16750 for electronics, GJB 150, FDA 820 for medical devices, etc.), which can be matched with requirements with one click without manual programming. The data format complies with certification specifications, facilitating rapid approval.
2. When testing special-shaped samples (such as long strip components, irregular assemblies), can the equipment's inner tank layout and door opening method be adapted to avoid blocking the air duct and affecting test results?
Answer: Conventional equipment mostly has fixed inner tanks and front-opening doors, which are difficult to adapt to special-shaped/large samples. Hongzhan supports customization of inner tank sizes from 36L to 10000L, and can design zoned air ducts and reserve sample wire outlets. Door opening methods can be front-opening, side-opening, or double-opening (suitable for extra-long samples), ensuring temperature uniformity during testing of special-shaped samples without affecting data.
3. Can existing laboratory equipment such as data loggers, vibration tables, and salt spray chambers be linked and controlled with high and low temperature test chambers to achieve comprehensive testing of temperature and humidity + vibration + salt spray?
Answer: Equipment synergy compatibility is easily overlooked. Hongzhan equipment is equipped with standardized interfaces (RS485, Ethernet) and can be seamlessly connected with third-party instruments. Through the central control system, it can synchronously control multiple environmental factors such as temperature and humidity, vibration, and salt spray, with real-time data synchronization and integration, adapting to complex reliability testing needs in aerospace, new energy and other industries.
4. When testing flammable, corrosive, or volatile gas-containing samples, does the equipment have special protective designs to avoid safety hazards or equipment damage?
Answer: The impact of sample characteristics on equipment is easily overlooked. Hongzhan can customize special protective models: explosion-proof inner tanks and inert gas replacement systems for flammable samples; Hastelloy inner tanks (acid and alkali resistant) for corrosive samples; activated carbon filtration devices for volatile samples, ensuring safety and extending equipment service life.
5. Can the equipment be compatible with unstable laboratory voltage (such as voltage fluctuations during peak workshop electricity usage) or special power supply requirements (such as 110V voltage overseas) to avoid frequent shutdowns or component burnout?
Answer: Power supply compatibility is easily overlooked. Hongzhan equipment supports a wide voltage range of 110V-440V, adapting to domestic and foreign power supply standards. It has a built-in intelligent voltage stabilization module and can operate stably even with a voltage fluctuation of ±15%. Equipped with triple protection against overload, overvoltage, and undervoltage, it avoids equipment damage or test interruption caused by power supply issues.
High-low temperature test chambers are essential equipment in product reliability testing. However, many procurement managers struggle when choosing between standard models and rapid temperature change (RTC) models: What are the key differences? How much is the price gap? Which is more cost-effective for long-term use?
This guide clarifies the core differences in performance, applications, and costs to help you make the right choice.
I. Core Performance Differences: Beyond "Faster Heating/Cooling"
The gap between the two is far more than just temperature rate—extending to structural design and testing capabilities.
Comparison Dimension
Standard High-Low Temperature Chamber
Rapid Temperature Change Chamber
Temperature Rate
0.7-1℃/min (standard), meeting basic testing needs
3-20℃/min (customizable), some models support linear heating/cooling
Structural Design
Single compressor + standard air duct, simple structure
Dual-compressor cascade system + high-efficiency heat exchange module + impact-resistant structure, suitable for high-frequency temperature changes
Temperature Control Precision
Fluctuation ±0.5℃, uniformity ±2℃
Fluctuation ±0.3℃, uniformity ±1.5℃, no overshoot during temperature changes
Core Testing Capability
Complies with GB/T 2423 standard; suitable for steady-state high-low temperature storage and temperature resistance testing
Simulates extreme rapid temperature change environments; supports accelerated aging testing, significantly shortening verification cycles
Standard chambers suffice for consumer electronics, small home appliances, etc. For new energy batteries, automotive components, aerospace, RTC chambers are a must—they accurately simulate severe temperature changes during transportation/use to expose product defects in advance. Example: An automotive parts enterprise reduced testing cycles from 3 months (standard chamber) to 1 month (RTC chamber), advancing product launch by 2 months.
II. Cost Differences: Procurement, Operation & Maintenance
RTC chambers are more expensive, but the specific cost gap and long-term expenses are detailed below:
1. Procurement Cost: 2-5x Higher, Driven by High-Quality Components
For the same volume, RTC chambers cost 2-5x more than standard models. The gap stems from high-precision dual compressors, custom heating/cooling modules, and fatigue-resistant structural parts—all with higher R&D and production thresholds.
2. Operating Cost: Higher Power & Consumables
RTC chambers consume 1.5-3x more power: A 100L standard chamber uses 5-8kW, while an RTC model uses 8-20kW. Electricity costs increase with usage frequency. RTC chambers also require special high-temperature heat transfer oil and eco-friendly refrigerants, with consumable costs twice that of standard models (which mainly use low-cost filters and sensor calibration).
3. Maintenance Cost: Complex Structure = Higher Requirements
Standard chambers have simple structures and few wearing parts, with low annual maintenance costs (filter replacement, sensor calibration). RTC chambers require more frequent maintenance due to multiple core components and high precision; annual maintenance costs are 1.8-3x higher (e.g., dual compressor and precision control system overhauls).
III. Selection Guide: Choose Based on Needs
✅ Choose Standard Chamber If:
1. You’re in consumer electronics, home appliances, toys, etc., and only need to meet GB/T 2423 standard
2. Budget is limited, pursuing cost-effectiveness, and testing frequency is low
1. Testing goals: Basic high-low temperature storage and temperature resistance verification
✅ Choose RTC Chamber If:
2. You’re in new energy, automotive, aerospace, needing to simulate extreme temperature changes
• You want to shorten testing cycles and accelerate product launches
• High testing requirements: Precise temperature rate control and no overshoot
IV. Lab Companion: Customized Cost-Effective Solutions
As a professional test equipment manufacturer, Guangdong Hongzhan Technology offers cost-effective standard high-low temperature chambers and customizable RTC chambers (3-20℃/min) for new energy, automotive, and other industries with strict requirements.
Lab Companion provide not only equipment but also one-stop customized solutions based on your testing needs and budget—helping you clarify costs and select the right chamber for efficient, worry-free product reliability testing.
Contact us anytime for accurate quotes and customized selection plans tailored to your industry and needs!
From the customer perspective, this guide sorts out core questions and selection criteria for high-low temp test chamber specs/performance across industries, with answers integrated with Hongzhan's advantages, fitting practical procurement scenarios.
Common Core Technical Spec Questions
1. How to choose temperature range? Is wider better?
Customer question: "Different industries have different temp requirements. Wide range or needs-based?"
Selection: Avoid blind pursuit of ultra-wide range (costly). Match industry needs: Electronics/Medical: -40℃~150℃ (basic); New Energy: -70℃~150℃ (extreme cold); Aerospace: -80℃~200℃ (extreme env). Hongzhan customizes -100℃~300℃ full range for cost-effectiveness.
2. How to choose temp change rate? Difference between "average" and "instantaneous"?
Customer question: "Rapid temp change needs 10℃/min. Average or instantaneous rate?"
Selection: Prioritize full-process average rate (actual test scenario fit). Electronics: 5-10℃/min sufficient; New Energy/Aerospace: ≥15-20℃/min. Hongzhan uses AI dynamic temp control + imported compressors, supporting 5-30℃/min adjustable with no instantaneous attenuation.
3. How to choose inner tank size? Conflict between load and temp uniformity?
Customer question: "Samples vary in size. Fixed or custom volume? Will uniformity drop when fully loaded?"
Selection: Volume matches single-test sample quantity (reserve 30% air duct space). Conventional: 36L (lab small-batch), 150L (industrial medium-batch), 500L+ (large samples). Prioritize custom tank brands. Hongzhan customizes 36L-10000L tanks with honeycomb air ducts, maintaining ≤1.5℃ uniformity even at full load.
4. Practical significance of temp accuracy/uniformity? How to verify?
Customer question: "Spec says ±0.5℃ accuracy. Achievable in use? Will deviation affect results?"
Selection: Accuracy determines data validity: Electronic chips: ≤±0.3℃; Medical devices: ≤±0.5℃; Uniformity: ≤1℃ (avoid local sample failure). Verification: Request 3rd-party calibration reports (e.g., NIM certification). Hongzhan equipment is calibrated before delivery, supporting on-site recheck.
5. How to judge humidity range/accuracy for humidity-heat models? Retrofit possible later?
Customer question: "Some tests need humidity. 0-98% RH or 40-95% RH? Retrofit humidity function later?"
Selection: General scenarios: 20-98% RH (±2% RH); Medical/Electronics: 5-98% RH (±1.5% RH, avoid low-humidity failure). Retrofit not recommended (air duct/control system modification risks stability); choose full-equipped models initially. Hongzhan humidity-heat models support 10-98% RH (ultrasonic humidification + condensation dehumidification) and offer pre-installed upgrade solutions for stability.
6. Upper limit for continuous operation? How to ensure stability long-term?
Customer question: "Need 100+ hours continuous test. Overload risk? Accuracy drop after 1 year?"
Selection: High-quality equipment has no mandatory limit; key is core component redundancy (e.g., dual-compressor backup). Confirm annual calibration and 1-year core component warranty. Hongzhan supports 7x24h operation (MTBF 20000h) with overload protection/high-temp alarm, free annual calibration, and ≤0.1℃ accuracy attenuation after 1 year.
Key selection tips: Match temp range, accuracy and uniformity to industry needs; reserve air duct space for tank size; prioritize humidity-heat function initially. Focus on continuous operation capability and core components; choose eco-friendly refrigerants. Hongzhan's customizable, precise, stable and eco-friendly equipment meets core spec demands, helping customers avoid pitfalls and select accurately.
The glove-type high-low temperature test chamber is a key equipment for environmental reliability testing in electronics, automotive, aerospace and other fields. With the core advantages of "sealed isolation + precise temperature control + convenient operation", it has become an ideal solution for sample testing under extreme temperatures. Its core features can be summarized in the following six dimensions.
I. Wide-Range and Precise Temperature Control, Adapting to Diverse Testing Needs
The equipment has a wide temperature range. Conventional models can simulate extreme environments from -70℃ to +150℃, and customized models can expand the temperature range to adapt to high and low temperature resistance testing of various products. It adopts PT100 platinum resistance sensor and PID high-precision control algorithm, with temperature fluctuation ≤±0.5℃ and uniformity ≤±2.0℃, ensuring accurate test data; the heating rate is 1.0-3.5℃/min and the cooling rate is 0.7-1.2℃/min, which can quickly switch temperatures and improve test efficiency.
II. Sealed Glove Operation, Ensuring Test Continuity and Safety
The chamber is equipped with a sealed operation port and high-sealing silica gel gloves to form an isolated test environment. Operators can real-time complete sample testing, status observation and other operations through the gloves without interrupting the test, avoiding temperature and humidity fluctuations caused by opening and closing the door, and improving data reliability; at the same time, it blocks the impact of extreme temperature inside the chamber on the outside, prevents external impurities from entering, and ensures environmental cleanliness and operator safety.
III. Intelligent and Convenient Operation, Improving Test Efficiency
The equipment is equipped with a large-screen touch screen controller, supporting Chinese-English bilingual switching and intuitive operation. The controller can preset 100 groups of processes, 50 steps/group of test procedures, and support 250 cycles of testing, meeting the needs of alternating temperature testing; it is equipped with USB and network communication functions, which can real-time export data, print curves and remote monitoring operations, facilitating data traceability and management; some models are equipped with test holes, which can be connected to external power supplies to realize live sample testing and expand application scenarios.
IV. Stable Structural Design, Ensuring Long-Term Stable Operation
The chamber adopts a double-layer composite structure. The outer shell is made of A3 steel plate with electrostatic spraying, which is corrosion-resistant and durable; the inner tank is made of SUS304 mirror stainless steel, which is high-temperature resistant and easy to clean; the middle is filled with 100mm high-density glass fiber cotton insulation layer, which is heat-insulating and energy-saving. The chamber door is equipped with double-layer high-temperature resistant sealing strips and hollow tempered glass observation window. The observation window is equipped with conductive film heating defrosting function, taking into account both sealing and observation needs. The refrigeration system adopts fully enclosed unit and environmentally friendly refrigerant, with forced air cooling, stable operation and low noise. It has passed 48-hour air pressure leak test to ensure stability and reliability.
V. Comprehensive Safety Protection, Reducing Test Risks
The equipment is built with multiple safety protection mechanisms, including over-temperature protection, refrigeration system overload and over-pressure protection, phase loss/phase reversal protection, leakage protection, water shortage protection, etc. It is equipped with three-color indicator lights to real-time display operation, standby and fault status. When a fault occurs, it will automatically shut down and prompt the cause, facilitating troubleshooting. The heating and refrigeration systems are independently designed to avoid interference, which not only improves temperature control accuracy, but also reduces the impact of single system failure on the test, ensuring equipment operation and sample safety.
VI. Compliance with Authoritative Standards, Adapting to Multi-Industry Needs
The product strictly complies with national and international standards such as GB/T2423.1-2008, GB/T2423.2-2008 and IEC60068. It is widely used in electronics, electrical engineering, automotive, aerospace, biomedicine, building materials and other fields. It can complete high and low temperature and constant temperature performance testing of materials and products, providing support for product design improvement and quality verification.
In summary, with the core advantages of precise temperature control, sealed operation, intelligence and convenience, and stability and reliability, the glove-type high-low temperature test chamber solves the pain points of dynamic testing under extreme temperatures. It is a key equipment for environmental reliability testing in multiple industries and provides solid guarantee for product quality improvement.
1. Refrigeration System Protection
- Compressor Overpressure Protection: Real-time monitors compressor internal pressure. Automatically triggers protection when pressure exceeds the safety threshold to avoid overpressure damage and ensure stable refrigeration system operation.
- Compressor Overheating Protection: Equipped with overheating detectors to sense compressor operating temperature. Immediately cuts off the circuit when overheated to prevent winding burnout and extend equipment service life.
- Compressor Overcurrent Protection: Monitors compressor current via a detection module. Rapidly cuts off power when current is abnormally high to avoid damage to the compressor and related electrical components.
- Refrigerant Pressure and Overload Protection Device: Monitors refrigerant circulation pressure to prevent system damage from leakage or abnormal pressure; protects against refrigeration system overload to ensure safe operation.
2. Test Chamber Protection
- Adjustable Overtemperature Protection: Flexibly sets overtemperature thresholds to adapt to different samples' temperature tolerance. Triggers protection promptly when the test chamber temperature reaches the set threshold.
- Three-Layer High-Temperature Overtemperature Protection: Hierarchical design: 1) Basic overtemperature protection linked with test control logic; 2) Electronic device for fast response; 3) Ultimate barrier to cut off heat source under extreme high temperature, ensuring sample and equipment safety.
- Fan Motor Overcurrent Protection: Provides overcurrent protection for circulating fan motor. Cuts off power quickly when current exceeds standard due to abnormal load or jamming to prevent burnout and ensure normal temperature uniformity circulation.
- Fault Abnormality Protection: Monitors equipment operation. Cuts off control power immediately to prevent fault expansion when abnormalities (e.g., temperature runaway, motor failure) occur; outputs fault indication and alarm signals for quick troubleshooting.
- Active Water Shortage Prompt: Equipped with water level sensor. Issues acousto-optic prompt when water level is too low, reminding timely replenishment to avoid test disruption or humidification component damage.
- Dynamic High and Low Temperature Protection: Intelligent adaptive adjustment. Dynamically modifies protection values according to test temperature curve to ensure test smoothness and intervene promptly in abnormal temperature fluctuations, improving safety and accuracy.
3. Other Protections
- Main Power Phase Sequence and Phase Loss Protection: Monitors power phase sequence and phase presence. Cuts off main power immediately on phase sequence error or loss to prevent motor reversal and electrical component burnout, ensuring overall electrical safety.
- Short Circuit Protection: Equipped with short circuit protectors. Fuses or trips quickly to cut off fault circuit when short circuit occurs, avoiding fires and equipment damage.
- Leakage/Surge Prevention Protection: Multi-layer design: leakage circuit breaker ensures operator safety; FUSE and RC electronic components suppress grid surges, protecting precision electronic parts.
- Controller Internal Automatic Detection Protection: Real-time detects core temperature/humidity sensor. Triggers protection and fault prompt on sensor abnormality to avoid test deviation or equipment misoperation.
- Water Cutoff and Dry Burning Protection: Dual protection: prevents humidification system damage from water cutoff idling; avoids electric heating component burnout in water-free state, ensuring humidification and heating system safety.
- Expansion Protection Device: Reserves two fault detection input interfaces for additional protection components or upgrades, enhancing system expandability and adaptability.
Summary
The test chamber's safety protection devices form a comprehensive, multi-level system covering refrigeration, test chamber and electrical systems. Integrating real-time monitoring, early warning and rapid response, they effectively prevent equipment damage from abnormalities (overpressure, overheating, etc.), protect samples and operators. Reserved expansion interfaces enhance flexibility and adaptability, ensuring stable, safe and reliable operation under various conditions.
Precision ovens are widely used in temperature-sensitive scenarios like electronics and laboratories due to their accurate temperature control and uniform temperature field. Correct operation ensures precision and extends service life. Below is the standardized procedure and core precautions.
I. Pre-operation Preparation
1. Equipment Inspection: Confirm no external damage, secure power/grounding connections, intact non-aging sealing strips, and unobstructed vents. For humidification models, check water tank level and replenish distilled water if insufficient.
2. Environment Confirmation: Ensure dry, well-ventilated environment away from flammables, no obstacles blocking heat dissipation. Maintain room temperature 5–35℃, avoiding direct strong light or drastic temperature changes.
3. Material Preparation: Use non-corrosive, non-volatile flammable materials. Select clean, dry suitable carriers (stainless steel trays, quartz boats). Strictly prohibit sealed or fully liquid-filled containers.
II. Core Operating Procedures
1. Startup Initialization: Connect power, turn on main switch, wait for system self-check (3–5 seconds, no display errors). Troubleshoot fault codes per manual before restarting.
2. Parameter Setting:
Temperature: Set target per process, distinguish "working chamber/surface temperature". For precision, refer to internal probe data; fluctuation ±0.5~±2℃ (per equipment precision).
Time: Set constant temperature duration (timing after reaching target; some support heating/constant temperature switching). Confirm 24h mode for continuous operation.
Auxiliary: Set blower speed (avoid material displacement), humidity for humidification/dehumidification models, and multi-stage profiles for programmable models.
3. Material Loading & Startup: Place trays stably with ≥5cm clearance from walls/probes (no air duct blockage). Close door tightly and press "Start" to heat.
4. Operation Monitoring: Monitor display in real time; stop and troubleshoot immediately if over-temperature/alarm. Record internal temperature regularly for precision experiments.
5. Shutdown & Material Retrieval: Wait for internal temperature ≤40℃, retrieve materials with high-temperature gloves. Use rapid cooling function (if available) cautiously for heat-sensitive materials.
6. Shutdown & Finalization: Turn off main power, clean inner chamber, drain water tank (if equipped). Complete operation log (equipment No., parameters, materials, duration).
III. Professional Precautions
Precision maintenance: Calibrate probes 1–2 times/year; replace sealing strips to avoid cold air leakage.
Safety taboos: No flammable, explosive, corrosive materials; no door opening during operation (except door-open constant temperature models); no unauthorized disassembly—contact professional maintenance for faults.
Maintenance: Clean air ducts/heat vents, inspect blower motor; descale humidification tank/tray. Disconnect power, keep dust-free and dry for long-term storage.
Special applications: For ≥200℃, confirm material temperature resistance; for vacuum models, check vacuum/sealing, release pressure slowly to avoid material damage.
Summary
Core principles: accurate setting, strict monitoring, standardized maintenance. Follow procedures for precision and safety. Adjust per manual for different brands/models.
As a core environmental reliability testing equipment, the high-temperature test chamber evaluates the durability, stability and service life of materials, components and complete machines under high temperatures by simulating extreme environments. It is key to product R&D, quality inspection and certification. Its core value lies in replacing natural aging with controlled laboratory conditions, shortening test cycles, identifying potential defects accurately, and providing a scientific basis for quality optimization. Below is an analysis of its core features and main applications from a professional perspective.
I. Core Technical Features
The technical advantages of the high-temperature test chamber focus on three aspects: temperature control accuracy, environmental simulation authenticity and safety reliability, specifically as follows:
1. Precise Temperature Control and Uniformity: Adopting PID microcomputer automatic control algorithm with high-precision platinum resistance sensor, the temperature control accuracy reaches ±0.5℃, and the no-load internal temperature uniformity is within ±1.0℃. The forced air circulation system (high-temperature resistant motor + multi-wing wind wheel) enables rapid heat diffusion, avoiding local temperature differences affecting test results.
2. Efficient Heating and Energy-Saving Insulation: Equipped with honeycomb stainless steel heating tubes for fast heating, high thermal stability and long service life. The chamber uses SUS#304 stainless steel inner lining and high-density imported rock wool insulation, combined with heat-resistant and corrosion-resistant silicone seals, effectively reducing heat loss, lowering energy consumption and ensuring high-temperature stability.
3. Intelligent Operation and Data Traceability: Supports custom temperature curves for complex processes such as step heating and constant temperature maintenance. High-end models integrate multi-parameter monitoring modules to synchronize temperature and voltage data; some are equipped with image recognition systems for automatic sample aging analysis, reducing human error.
4. Comprehensive Safety Protection: Built-in over-temperature protection, overload power-off and electric heating over-current protection. It automatically cuts off heating power and alarms when temperature exceeds the set range, with explosion-proof door locks and other structural designs ensuring test safety and reliability.
II. Main Application Fields
The high-temperature test chamber is widely used in high-end manufacturing and scientific research fields such as electronics, automotive and aerospace, mainly serving product reliability verification needs:
1. Electronic and Electrical Industry: Used for high-temperature aging testing of chips, capacitors and resistors to evaluate performance attenuation. Conducts high-temperature operation tests on PCBs, mobile phones and servers to verify functional stability under extreme temperatures and troubleshoot loose welds and short circuits.
2. Automotive Industry: Simulates summer in-vehicle high temperatures for durability testing of on-board electronics (control units, sensors, displays) in engine compartments. Tests heat resistance and weather resistance of automotive interior materials and external coatings to ensure vehicle reliability in extreme climates.
3. Aerospace and Military Industry: Simulates high-altitude aerodynamic heating or ground high temperatures to test the high-temperature stability of aircraft components, electronics and spacecraft thermal insulation materials. Verifies military equipment reliability under extreme high temperatures per national military standards, avoiding high-temperature-induced structural cracking and performance failure.
4. New Energy and Photovoltaic Field: Performs high-temperature charge-discharge and storage safety tests on lithium battery modules and solar inverters. Simulates desert high temperatures per IEC 61215 to evaluate solar panel efficiency attenuation and ensure long-term outdoor stability.
5. Pharmaceutical and Material Research: Tests the stability and degradation rate of drugs and vaccines under high temperatures to determine transportation and storage shelf life. Evaluates high-temperature performance of new plastics, composites and architectural coatings, analyzing thermal stability and strength changes to support material selection and R&D.
III. Summary
With precise environmental simulation and comprehensive reliability verification capabilities, the high-temperature test chamber is a core component of modern industrial quality control systems. Its development trend is towards multi-environment collaborative simulation (high temperature + humidity + vibration) and intelligent data analysis, which will further improve test efficiency and accuracy, providing stronger support for high-end product R&D and quality assurance across industries.
Three zone thermal shock test chambers are core equipment for reliability testing of electronic components, auto parts, and new energy materials. They simulate extreme temperature changes through rapid switching between high-temperature, low-temperature, and transition zones. However, frequent high-intensity operation can lead to various faults. Mastering basic troubleshooting methods is critical to ensuring test continuity and data accuracy.
1. Temperature Shock Rate Fails to Meet Requirements
This is the most common fault affecting test validity.
Possible Causes
1. Blockage of high/low-temperature zone air ducts by test samples or debris, resulting in uneven air circulation.
2. Degradation of the refrigeration system’s compressor efficiency or insufficient refrigerant.
3. Damaged thermal insulation layer of the chamber, leading to large heat loss.
Quick Troubleshooting
1. Clean air ducts and ensure no obstacles around samples; leave enough spacing for airflow.
2. Check the compressor’s operating pressure and supplement refrigerant if necessary (operated by professional technicians).
3. Inspect the chamber’s sealing strips and insulation layers; replace damaged parts promptly.
2. Failure of Zone Switching Mechanism
The transition zone’s lifting or pushing device fails to switch zones normally, halting the test.
Possible Causes
1. Jamming of mechanical components due to dust accumulation or lack of lubrication.
2. Malfunction of the control system’s solenoid valve or sensor, leading to incorrect signal transmission.
3. Overload protection triggered by excessive weight of test samples exceeding the chamber’s rated load.
Quick Troubleshooting
1. Power off the equipment, clean mechanical guide rails, and apply special lubricating oil.
2. Calibrate zone position sensors and check solenoid valve wiring for loose connections.
3. Ensure sample weight complies with the equipment’s specifications; reduce load if overloaded.
3. Abnormal Temperature Uniformity
Temperature differences in the test zone exceed the standard range, causing inaccurate test data.
Possible Causes
1. Irregular placement of samples, blocking airflow and forming local hot/cold spots.
2. Aging or damage of the heating tube or evaporator, leading to uneven heating/cooling.
3. Faulty temperature controller, resulting in incorrect temperature regulation.
Quick Troubleshooting
1. Follow the sample placement guidelines; avoid covering air outlets.
2. Inspect the heating and refrigeration components; replace damaged parts in a timely manner.
3. Recalibrate the temperature controller with standard thermometers to ensure accurate readings.
4. System Alarm Activation (Refrigeration/Overheating)
The equipment triggers an alarm and shuts down during operation.
Possible Causes
1. High-temperature zone overheating due to damaged temperature limit protector.
2. Refrigeration system failure (e.g., condenser fan stuck, refrigerant leakage).
3. Poor ventilation around the equipment, leading to heat buildup in the compressor compartment.
Quick Troubleshooting
1. Check and reset the temperature limit protector; replace it if it fails to work.
2. Clean the condenser dust and inspect for refrigerant leaks; contact after-sales service for repairs if needed.
3. Ensure the equipment has sufficient ventilation space (at least 30cm from walls and other objects).
Key Maintenance Tips
1. Regularly clean air filters, air ducts, and condenser coils to maintain airflow efficiency.
2. Lubricate mechanical moving parts every 3 months to prevent jamming.
3. Calibrate temperature sensors and controllers quarterly using standard instruments to ensure data accuracy.
4. Avoid placing corrosive or volatile samples to prevent damage to the chamber’s internal components.
In fields such as electronics and automotive, a product's ability to withstand sudden temperature changes is crucial to its reliability. As a key device for simulating extreme temperature differences, this article will analyze the working principle of the three-chamber thermal shock chamber and reveal the core of its "freezing-heating alternation" technology.
I. Core Definition: What is a Three-Chamber Thermal Shock Chamber?
The three-chamber thermal shock chamber tests samples by rapidly switching between high and low temperature environments. With an additional independent test chamber, it achieves precise temperature control and fast switching among the three chambers, effectively evaluating the performance stability of products under sudden temperature changes.
II. Structural Foundation: Synergy of Three Chambers and Core Systems
The operation of the equipment relies on the precise cooperation of "three chambers + four systems". Clarifying the functions of each component is the key to understanding its working logic.
1. Three Chambers: The "Environment Switching Station" for Tests
High-temperature Chamber: Provides a high temperature range from room temperature to over 150℃ through heating elements. Fans and air ducts ensure uniform heat distribution, guaranteeing test accuracy.
Low-temperature Chamber: Achieves a deep low temperature range of -60℃ to -80℃ using cascade refrigeration technology. Air circulation devices maintain stable low-temperature distribution.
Test Chamber: Serves as the core channel connecting the high and low temperature chambers. Its quick-opening/closing door (≤10 seconds) reduces temperature loss and ensures shock effect.
2. Four Systems: The "Power Core" of Equipment Operation
Temperature Control System: High-precision sensors work in conjunction with PID controllers to achieve a temperature control accuracy of ±0.5℃.
Refrigeration System: Cascade technology combined with refrigerants R404A and R23 rapidly achieves stable deep low temperatures.
Mechanical Transmission System: A stepping motor drives the sample rack for fast and accurate transfer between the three chambers, ensuring automatic operation.
Air Circulation System: Centrifugal fans and customized air ducts form convection, avoiding temperature deviation in local areas of the sample.
III. Working Process: A Complete Closed Loop from Heating to Shock
Taking the "high-temperature → low-temperature" shock as an example, the equipment operates in an automatic closed loop, with the process as follows:
Preparation and Preheating: Fix the sample and set parameters (e.g., 120℃/-40℃, 30 minutes of heat preservation, 10 cycles). After startup, the high and low temperature chambers simultaneously reach the target temperatures and maintain them.
Rapid Shock: After the high-temperature preservation, the sample is transferred to the low-temperature chamber through the test chamber within ≤10 seconds, completing the first shock.
Circulation and Completion: After low-temperature preservation, the sample is transferred back to complete the reverse shock. The circulation continues until the set number of cycles is reached, then the equipment shuts down. The sample is inspected and test data is recorded.
IV. Core Technology Highlights: The Key to Ensuring "Precise Shock"
The core competitiveness of the equipment stems from two key technologies:
Rapid Temperature Response Technology: The high-temperature chamber adopts efficient heating and flow disturbance design, while the low-temperature chamber uses cascade refrigeration and anti-frost technology, ensuring fast and stable temperature changes.
Seamless Switching and Sealing Technology: The test chamber features double sealing and a pneumatic quick-opening door, isolating air flow while balancing efficiency and service life.
V. Application Scenarios: Where is Thermal Shock Testing Needed?
Such tests are required for mobile phone chips, automotive sensors, etc. They can expose potential defects in advance, such as material cracking and solder joint detachment, providing data support for product improvement.
In summary, the three-chamber thermal shock chamber, with its core of "temperature control of three chambers (high-temperature chamber, test chamber, low-temperature chamber) + synergy of four systems", is a key equipment for ensuring product quality in high-end manufacturing.
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