The AT515 is a precision DC resistance Tester for testing ultra-low or low shunt resistance, a miniature benchtop instrument controlled by a high-performance ARM microprocessor. The instrument has an accuracy of 0.01% and a resolution of 0.01μΩ, and a measurement range of 0.01μΩ~1GΩ. Superior repetitive measurement accuracy; The resistance value is displayed in 7 digits with 1,200,000 readings and a maximum sampling speed of 6ms. The instrument has a built-in temperature compensation interface to compensate for errors caused by temperature.
The instrument has a built-in 14-step comparator output that can be set to 10 qualifying levels, and all comparator results can be output via the Handler interface.
The instrument is equipped with RS-232 interface as standard, and uses SCPI (Standard Command for Programmable Instrument) to communicate with computers, PLCs or WINCE devices for effective remote control and data acquisition functions.
●Temperature compensation function.
●High current test function (open circuit Voltage< 20mV).
●Compatible with SCPI instruction set.
●Excellent repetitive measurement accuracy
● Keypad lock function.
● Data retention function.
●Comparator function and data output function



●Measure a variety of high, medium and low value resistors
●Various switch contact resistors
●Enameled wire resistance
●Connector contact resistance
● Relay wire pack and contact resistor
●Winding resistors for transformers, inductors, motors, and deflection coils
●Solder joint contact resistance
●Wire resistance
●Metal riveting resistors for cars, ships, and airplanes
● Printed plate lines and porosity resistors
●Characterize the low-resistance characteristics of electromechanical components
●Metal flaw detection, etc
