RK9931A Programmable DC Grounding Resistance Tester RK9931B RK9931C with Communication Interface RS232C RS485 USB 5-inch TFT LCD 600mΩ (RK9931B(DC 3-60A, 600mΩ))

The RK9931 series programmable grounding resistance tester is a high-performance safety tester designed with high-speed MCU and large-scale digital circuits. The output current is controlled by hardware feedback and high-speed MCU technology, ensuring stable and reliable output current. The output current is driven by DDS+power amplifier, and the output waveform is pure with little distortion. It can display current and resistance values in real time, and has software calibration function. It is equipped with PLC interface, RS232C, RS485, USB device, USB Host interface, which can easily form a comprehensive testing system with computer or PLC. Capable of quickly and accurately conducting comprehensive safety measurements on household appliances, instruments, lighting appliances, electric heating appliances, computers, and information systems.

• Adopting a 5-inch LCD display, the display parameters are eye-catching and intuitive. DDS digital signal synthesis technology is used to generate accurate, stable, pure, and low distortion waveforms
• Constant current output: The stability range of the output current is within 2%, avoiding changes in the output current caused by unstable input current voltage and load variations
• It has an open circuit alarm function. The maximum testing time is 999.9 seconds；Using the four terminal method for measurement to eliminate the influence of contact resistance
• Application field：Household appliances；Instruments and meters；Lighting appliances；Electric heating appliances
• Operating Temperature and Humidity：0℃-40℃，≦75%RH；Power Supply：100V-121V，198V-242V，47.5-63Hz