New product launch – rk9930 program control grounding resistance tester

At the beginning of the new year, Merrick would like to thank all new and old customers for their support and trust in us in the past year, which has made us achieve good results. At the same time, Merrick is also more focused on scientific and technological innovation, investing a lot of human and material resources in the research and development of new products, making the products more scientific, automated and intelligent.

Rk9930 series programmable grounding resistance tester adopts high-speed MCU and large-scale digital circuit design of high-performance safety tester. The output current adopts hardware feedback and high-speed MCU control technology to make the output current stable and reliable. The output current is driven by DDS + power amplifier, the output waveform is pure and the distortion is small. It can display the current value and resistance value in real time, and has the function of software calibration. It is equipped with a variety of interfaces. It is convenient to form a comprehensive test system with computer or PLC. It can quickly and accurately measure the safety of household appliances, instruments, lighting appliances, electric heating appliances, computers and information machines. Compared with the same products in the market, the price of this series of instruments is more favorable, and has the following performance characteristics:

1. 5-inch LCD is used to display the parameters, which is eye-catching and intuitive. DDS digital signal synthesis technology is adopted to produce the waveform with stable precision, pure and low distortion;

2. Constant current output: the stability rate of output current is within 1%, so as to avoid the output current change due to input current voltage instability and load change;

3. With open circuit alarm function. The maximum test time is 999.9s;

4. Four terminal method is used to eliminate the influence of contact resistance;

5. The output frequency is 50 Hz / 60 Hz. It has the alarm function of upper and lower limit of resistance;

6.Chinese and English bilingual operation interface, adapt to the needs of different users, support mass storage, adapt to different test application requirements.