Under normal operating conditions, the high and low temperature humidity cycling test chamber has consistently performed well during application testing. However, occasional issues such as malfunctions can still occur. One of the most common problems is an open circuit. This typically happens because the resistance wire is too thin or has been damaged over time.
When a sudden open circuit occurs in the high and low temperature humidity cycling test chamber, here are the best methods to handle it:
1. To quickly identify an open circuit, use a multimeter. Set the multimeter to the "×1 Ω" range. If the measured resistance is less than R0, it may indicate a short circuit. If the multimeter shows an infinite resistance value, then an open circuit is confirmed.
2. An open circuit is relatively easy to fix. As long as the length and thickness of the resistance wire are not affected, you can locate the short circuit and clean it, then reinforce the insulation. However, if it's an open circuit, changing the length of the resistance wire during repair will affect the resistance value. Therefore, it's usually necessary to replace the entire resistor body. If welding is required, make sure to recheck the resistance after welding to ensure accuracy.
3. If the display value of the environmental test equipment is lower than the actual value or appears unstable, it could be due to dirt inside the protective tube. In this case, use a specialized cleaning agent to remove the dirt. If the display shows a negative value, it might be caused by a short circuit in the thermistor or incorrect wiring. To resolve this, correct the wiring and address the short circuit issue accordingly.
Ai Si Co., Ltd.'s high and low temperature humidity cycling test chamber is built on the business philosophy of "professional quality creation, service delivery value, and product '0 defect'." Every year, the R&D center launches more than 30 new products and continuously improves existing ones through innovation, aiming to maximize user satisfaction. The company guarantees a service commitment of "responding within 30 minutes of receiving fault information, providing solutions within 2 hours, and having professional engineers on-site within 48 hours." Quality is built through strength, and reputation builds the brand. We sincerely look forward to cooperating with friends from all walks of life for a grand exhibition!
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