本文件适用于自动可变负载传感装置，其设计用于连续感测铁路车辆的负载，并提供可由中继阀用于自动改变用于制动应用的气压的气动输出信号，从而相应地调整制动力，以达到所需的制动性能。 本文件规定了自动可变负载传感装置的设计、测试和质量保证要求。 本文件的要求不完全适用于车辆级试验（车辆认证试验）。

This document applies to automatic variable load sensing devices designed to continuously sense the load of a railway vehicle and provide a pneumatic output signal that can be used by a relay valve for the automatic variation of the air pressure used for brake applications, thereby adjusting the brake force accordingly to achieve the required brake performance. This document specifies the requirements for the design, testing and quality assurance of automatic variable load sensing devices. The requirements of this document are not fully applicable for tests on vehicle level (vehicle homologation tests).