Common Issues Encountered When Operating Constant Temperature and Humidity Test Chambers

Source：LINPIN Time：2025-04-17 Category：Industry News

For environmental testing equipment like constant temperature and humidity test chambers, various factors can affect their operation during use. Improper handling of certain issues may even lead to significant losses. If problems arise suddenly during testing, they can cause considerable inconvenience.

Many users recognize when an issue occurs with the test chamber but remain unsure how to resolve it. Below, we provide several solutions for addressing operational interruptions.

constant temperature and humidity test chambers

Identify the Type of Interruption
When a problem occurs, first determine whether it falls under one of the following categories based on the GJB150 standard:

Tolerance-range interruption (minor deviation within acceptable limits)
Under-test condition interruption (conditions fall below required parameters)
Over-test condition interruption (conditions exceed required parameters)
Only by identifying the specific issue can targeted solutions be applied.
Tolerance-Range Interruption
If the interruption is within the acceptable tolerance range, the error is minor and controllable. In this case, analyze the situation and treat the interruption period as part of the total test duration. The final test results will still be usable with minimal deviation.

Under-Test Condition Interruption
If the test conditions fall below the required minimum, the test may become invalid. To resolve this, adjust the conditions back to the predefined parameters before resuming the test cycle.

Over-Test Condition Interruption
If the test conditions exceed the required limits (e.g., causing sample failure), the results will be invalid. To prevent further interruptions, replace the faulty sample, ensure it meets specifications, and restart the test.

Unexpected Interruptions (Power Outages, Equipment Failures, etc.)
In cases of sudden interruptions (e.g., power or water supply cuts), seal the test chamber door and inspect the sample. If the sample remains unaffected and the equipment can quickly resume operation, handle it as an under-test condition interruption.

Additional Note:

If the interruption lasts less than 2 hours, follow the corresponding GJB150 guidelines for resolution.
If the interruption exceeds 2 hours, the entire test must be restarted.
By following these steps, users can effectively manage interruptions and ensure accurate test results.

Previous article: Do You Know the Application Industries and Categories of Salt Spray Test Chambers?

Next article: How to Properly Maintain a UV Aging Test Chamber in Winter

News Recommendation

25.08

The Cleaning and Maintenance Secrets of Constant Temperature and Humidity Test Chambers: Have You Mastered Them?

In many production workshops of enterprises, constant temperature and humidity test chambers are often indispensable pieces of equipment. However, many operators tend to overlook the daily cleaning of these devices during use, leading to a rapid accumulation of grease and dust on the equipment.

25.09

UV-Accelerated Weathering Test Chamber – Wiring Code and Electrical Safety Operating Guide (Official Version)

The UV-accelerated weathering test chamber is a key item of equipment used to simulate solar radiation and perform accelerated ageing evaluations on materials. Its electrical system must not only drive high-power UV sources but also acquire and control signals for temperature, humidity, spray, etc.

25.04

Two-Chamber vs. Three-Chamber Thermal Shock Test Chambers: Which One to Choose?

Thermal shock test chambers come in two main configurations: two-chamber and three-chamber designs. When purchasing this equipment, how should customers decide which structure is more suitable?

25.04

What is the Role of Sensors in Thermal Shock Test Chambers?

Sensors can significantly impact the accuracy of thermal shock test chambers. What specific functions do sensors serve in these chambers? Let’s briefly explore this through the following article.

25.09

Standardized Operating Instruction for Constant Temperature and Humidity Test Chambers (Applicable to R&D, Quality Inspection, and Third-Party Laboratories)

To ensure the electrical, mechanical and thermodynamic integrity of constant temperature and humidity test chambers (hereafter “the chamber”), to standardize operating procedures, and to reduce failure and accident rates, this instruction is established. It applies to all programmable, single-point and walk-in chambers that are newly purchased, in service or relocated.