Core Logic: Match testing requirements, balance performance and full life-cycle cost, and avoid over-specification for under-utilization.
I. Core Testing Requirements
1. Temperature Change Rate
Clarify the loaded rate and deviation requirements (e.g., ≤±0.5℃/min), and match the application scenarios:
l 5–10℃/min for consumer electronics
l 10–20℃/min for automotive/aerospace industries
2. Temperature & Humidity Range
Cover the specified testing standards:
l -40~85℃ for new energy products
l -55~125℃ for aerospace products
Select models with 20%–98%RH range if humidity testing is required.
3. Sample Compatibility
l The chamber volume should be ≥ 3 times the sample volume.
l Dynamic load compensation is required for high-heat-capacity samples (e.g., metal components).
II. Hardware Performance
1. Refrigeration System
Prioritize dual-compressor cascade systems equipped with imported brands (Danfoss/Copeland) and eco-friendly refrigerants (R404A/R23).
2. Air Duct & Heating System
Adopt scroll diversion + baffle design, with 0–100% linear adjustment of heating tubes.
3. Sensors
Use imported PT1000 sensors with a sampling frequency of ≥ 10 times/second.
III. Software Functions
1. Algorithm
PID closed-loop control + adaptive temperature zone compensation, supporting custom rate curve setting.
2. Data Management
Automatic data recording and export (Excel/CSV format), with support for remote control and multi-channel alarm.
3. Safety Features
Over-temperature protection, compressor overload protection, water shortage protection, etc. Explosion-proof pressure relief devices are mandatory for flammable and explosive samples.
IV. Full Life-Cycle Cost
1. Procurement Cost
Select models based on actual needs; avoid blind pursuit of high rates (the price of 10℃/min models is 1.5–2 times that of 5℃/min models).
2. Operation Cost
Prefer inverter compressors to reduce electricity consumption by 15%–20%.
3. Maintenance Cost
Choose models with modular structure, and confirm annual free calibration services.
V. Expandability & Compatibility
Support post-purchase installation of humidity, explosion-proof, and data acquisition modules.
Compatible with upper computers and testing fixtures for automated testing.
VI. Manufacturer Services & Qualifications
Provide customized solutions and loaded rate test reports.
Ensure the equipment has passed ISO 9001 and CE certifications, complying with the GB/T 2423.22 standard.
Ø Selection Case
Testing Scenario: Automotive motor controller testing (8kg, AEC-Q100 standard)
Recommended Model: 150L chamber with 10℃/min loaded rate, -40~125℃ temperature range, and explosion-proof function.
Benefits: Balances testing requirements and cost, improving testing efficiency by 4 times.
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