Time Electronics 5070 Micro-Ohm meter Calibrator - Manual (Page 3)

3
5070 Technical Manual 3
1. General Description
The 5070 is a portable instrument suitable for calibrating high current Ductor Testers and
Micro-Ohm meters. It contains 5 sets of high current rating standard resistors which simulate
the resistance being measured.
It has full 4 terminal capabilities with extra large terminals for the current connection.
Gold plated terminals are used throughout to reduce contact resistance and thermal
emfs (for dc based instruments).
It has a substantial maximum continuous current rating but is also suitable for much
higher transient/pulse test currents.
The internal resistance standards are all high quality manganin types with good long
term stability and temperature coefficients.