BS EN 60564 is an international standard that discusses the D.C. bridges for measuring resistance.
BS EN 60564 applies to DC bridges for measuring resistance. BS EN 60564 also applies to auxiliary equipment which is a built-in part of the bridge.
Note: BS EN 60564 does not apply to bridge comparators1), nor to self-balancing bridges nor to those which employ graduations on the null detector to obtain a part of the indicated value, nor to external auxiliary equipment used with the bridge.
BS EN 60564 on direct-current bridges is relevant to:
D.C. bridge for measuring resistance is the assembly of at least three resistance arms which, together with a test resistor, form a bridge network; is a source of direct current, and a null detector is also required for its operation. These are not built-in. On balance, there exists a calculable relationship between the resistance values of the resistors.
BS EN 60564 gives the technicalities for the D.C. bridges for measuring resistances. It specifies bridges that are classified according to whether they measure the values of two-terminal or four-terminal resistors with or without a leakage current screen (circuit). It helps the users to express the class index of a bridge either in percent use or parts per million (ppm).
The permissible limits of error of a bridge according to BS EN 60564 are composed of two parts:
BS EN 60564 assists with the conditions for the determination of intrinsic errors and with the permissible variations. It guides you with the additional electrical and mechanical requirements. It also provides you with the information, markings, and symbols that help the users to manufacture good quality, reliable products.
Overall, BS EN 60564 is useful as it provides guidance on the D.C. bridges for measuring resistance that can be beneficial for your business and can also help you to expand your business globally.
IEC 60564:1977