TUNKIA TD1858 is a highly precise, portable calibrator with AC/DC voltage, AC/DC current, and DC resistance sources. It's ideal for calibrating 4.5-digit DDMs, offering wide output range. Suitable for various applications, it's exceptionally portable, weighing under 10 kg, and provides multiple output adjustment methods. Affordable, yet offering high precision and stability, it excels in real calibration scenarios.

This essay explores broadband current measurement, highlighting the resistance method and coaxial shunts. It covers the basics of resistance-based measurement and the challenges faced in measuring high-frequency currents. The essay introduces the squirrel-cage coaxial structure, emphasizing its benefits in addressing these challenges. It concludes by offering practical insights into typical applications and precautions for coaxial shunt usage. This concise guide is invaluable for engineers, researchers, and technicians seeking accurate and dependable results in broadband current measurement.

This essay mainly talks about application of ultra-stable constant current source as excitation power supply in physics research, and briefly introduces TUNKIA’s cutting-edge product: TH1000 ultra-stable precision current source.

TD1850 Multifunction Calibrator: an ideal calibrator for anyone working with 3.5 digits multimeters. With multiple output modes (including touch screen output, button output, percentage output and knob output) and an extensive output range (DCV, ACV, DCI, ACI, R, F) this instrument can make calibration much easier and more efficient.

This article discusses understanding the Power Coefficient of Resistance (PCR) and its impact on coaxial shunt calibration optimization. TUNKIA TH0420 Reference Coaxial Current Shunt is a cutting-edge instrument and is suitable for coaxial shunt calibration and wide range of AC and DC current precision and fast measurement.

This article briefly introduces the electromagnetic measurement system of TUNKIA. Our products have become essential tools in numerous national and provincial metrology institutions, provincial electrical research institutes, and pivotal scientific research laboratories. Click to learn more.