Ohm Labs<\/a> 100-0 Zero Ohm standard is a four-wire Zero Ohm reference for monitoring long scale multimeters, micro-ohmmeters, or other equipment that monitors a true short circuit.<\/p>\nZero Ohm, in any connection configuration, is provided by means of a tetrajunction. A tetra function is an ideal four wire connection, so that when you send current through any two connections, there is no potential difference over the other two connections.<\/p>\n
Based on the work of, for example, Hamon and others at the NIST, a ‘copper disk’ and connection construction has been evaluated and then commercialized in Leeds & Northrup’s Hamon transfer standards.<\/p>\n
Verification of the 100-0 standard can be performed by passing current through different pairs of the terminals and viewing the voltage across the remaining pair. The 100-0 is factory set at less than 50 Nano-ohm in each connection configuration. The tetraj function does not drift measurably over time.<\/p>\n
Specifications<\/h3>\n