Intelligent Loop Resistance Tester High Current
Adopting the latest switching power supply technology, it can continuously output high current for a long time, overcoming the drawbacks of pulse-type power supply's instantaneous current, effectively breaking down the oxide film on switch contacts, and obtaining good test results.
High stability: Under severe interference conditions, the last digit of the LCD screen can stabilize within ±1 word, with stable readings and good repeatability.
High precision: Using dual-channel high-speed 16-bit Σ－Δ AD sampling and the latest digital signal processing technology, the maximum resolution reaches 0.01μΩ, making it the only contact resistance tester in China that can achieve 0.01μΩ resolution with high stability, surpassing imported high-current micro-ohmmeters in performance.
Intelligent: Using an imported high-performance CPU, the system automatically switches ranges based on signal strength during measurement, ensuring test accuracy. The over-temperature protection circuit can automatically stop outputting current when the instrument exceeds the set temperature, ensuring safe use.
High quality: All key components are imported, and a cleverly designed temperature compensation circuit effectively eliminates the influence of ambient temperature on measurement results. The use of military-grade connectors enhances vibration resistance.
Powerful functions: Current can be freely selected between 50A and 100A, and test time can be set arbitrarily from 5s to 599s, overcoming the shortcomings of other similar instruments that cannot set measurement time or have too short continuous working time, far exceeding the performance of other similar instruments.
User-friendly interface: Data input via rotary mouse is convenient and fast, allowing users to set the instrument's date and time, save measurement data in real-time, and print measurement results immediately.
Multiple communication methods: Can communicate with a computer via RS232 serial port (9-pin) or USB data cable, uploading measurement data to the computer for further analysis and processing by test personnel.
(9) Easy to use: Small size, light weight, and portable.
Technical Specifications
Intelligent Loop Resistance Tester Measurement Range: 0～2999.9μΩ
Resolution: 0~99.99, 0.01μΩ；
100.0~2999.9, 0.1μΩ
Test Current: DC50A, 100A two fixed outputs
Measurement Accuracy: ±(0.5% rd+2d)
Continuous Working Time: 5s~599s
Display: Large-screen Chinese LCD
Communication: USB or RS232 serial port
Power Supply: AC220V±10% 50Hz
Total Power: 600W
Maximum Storage Records: 200
Working Environment: Temperature -10℃～40℃ Humidity ≤80 %RH
Dimensions: 380×300×260 mm3
Weight: 6kg (excluding accessories)
Fault Phenomena and Troubleshooting
Fault Phenomenon Troubleshooting
No response after power-on, LCD screen blank Check for AC power supply
Check power cable
Check if the fuse inside the fuse holder is blown
Resistance value obviously too large or over-range during test Check if the measured resistance is too large
Check if the voltage input wires are connected inside the current output wires
Check if the test leads are connected with reversed polarity
Check if the voltage output wires are properly connected and if the test piece terminals are oxidized
Rotary mouse no response Turn off power and restart
Press reset button to reset the instrument
Communication failure Check if the data cable is properly connected
Check if the instrument is in online mode
Uninstall and reinstall the driver
Press reset button to reset the instrument
