The upper section of the waterproof test chamber testing device is part of this article, so I recommend that everyone reads it together with the previous one for better understanding.
UL Test Bending Finger (PA100A Probe):
1. This probe is manufactured in accordance with the relevant provisions of UL1278, UL1026, and UL507 standards.
2. The UL test bending finger is a crucial tool used during electric shock protection testing for household and similar electrical appliances. It ensures compliance with safety requirements by simulating human contact during testing.
Description of the Waterproof Test Chamber according to GB/T 4942.2-1993:
This standard outlines the requirements, testing methods, inspection rules, markings, packaging, and storage conditions for parking distance warning devices. It serves as a reference for manufacturers and users to ensure the proper functionality and safety of such equipment.
It's important to note that the range warning device is not a substitute for manual parking by the driver, nor is it designed to alert other people or objects within the parking area. The waterproof test equipment is merely an auxiliary tool and does not relieve the driver of their responsibility when parking.
This standard is not equivalent to ISO/TR 12155:1994(E), which specifies requirements and testing procedures for obstacle detection systems in reversing commercial vehicles. It also references DIN 75031, which outlines requirements and inspections for shunting alarms on commercial vehicles and trailers.
For a clearer understanding of the standard test procedure for waterproof test chambers, please refer to the image below.
If you're looking to ensure your products meet safety and performance standards, understanding these testing procedures is essential. Whether you're conducting UL tests or following GB/T guidelines, using the right tools like the PA100A probe and properly calibrated test chambers will help maintain compliance and enhance product reliability.

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