No More Confusion in Selection: Key Technical Spec Questions for High-Low Temp Test Chambers (Guangdong Lab Companion)

    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.