TD1040 Clamp on Ammeter Calibration Device ◉ TD1040 is a standard device specifically designed for calibrating AC/DC clamp on ammeters, with optional levels of 0.02/0.05. The device adopts a double loop structure with high and low current loops, achieving single turn calibration of various AC and DC clamp ammeters with high accuracy and easy traceability. ◉ Remove the current loop, this device can also be used as a high current standard source, and can be used in conjunction with other standards to calibrate or calibrate AC/DC splitters, transformers, sensors, etc. Reference standard: JJF1075-2015 "Calibration Specification for Clamp on Ammeter" (drafted by Tianheng Measurement and Control).