Core 6 Factors for Rapid Temperature Change Chamber Selection

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.