When conducting tests in high and low temperature test chambers, it's essential to follow specific guidelines regarding the size, type, and placement of test samples. This article provides a comprehensive overview of best practices for sample placement and other important considerations:
First, the volume of the test samples should ideally not exceed one-third of the chamber’s internal capacity. Exceeding this limit can interfere with airflow circulation, which may lead to uneven temperature distribution and affect test accuracy.
Next, samples should be placed in the center of the chamber, ensuring that they do not block the upper air ducts or rest directly on the chamber surface. The sample rack should be adjusted according to the product’s size, shape, weight, and quantity to maintain proper spacing and ensure even heat transfer.
If the test sample is a rubber-based material, it’s recommended to place it on a protective plate. This helps prevent the material from melting and sticking to the sample holder during high-temperature testing.
Additionally, if the sample is a liquid, it must be securely contained in an appropriate vessel to prevent spills. For volatile, flammable, or natural substances, it’s generally advisable to avoid testing unless absolutely necessary. If testing is required, the temperature should be kept moderate to reduce risks.
Tip: When using external power supplies for the test chamber, connect the wires to the designated test hole. Avoid letting the wires tangle, as this could pose a safety hazard.
Proper sample placement and handling are crucial for accurate and safe testing. Following these guidelines will help ensure reliable results and maintain the integrity of both the equipment and the samples being tested. Always refer to the manufacturer’s instructions and safety protocols before starting any test procedure.
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