High stability: Under severe interference conditions, the last digit of the LCD screen data can remain stable within ±1 digit, with stable readings and good repeatability.
High precision: Uses dual-channel high-speed 16-bit Σ－Δ AD sampling and the latest digital signal processing technology, with the highest resolution reaching 0.01μΩ, it is currently the only contact resistance tester in China that can achieve 0.01μΩ resolution and is very stable, with performance surpassing imported high-current micro-ohmmeters.
Intelligent: Uses imported high-performance CPU, during measurement the system automatically switches ranges based on signal size, ensuring the accuracy of the product's test results. Over-temperature protection circuit can automatically stop outputting current when the instrument exceeds the set temperature, ensuring safe use of the instrument.
High quality: All key components are imported, and the 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, test time can be set arbitrarily from 5s to 599s, overcoming the defects of other similar instruments that cannot set measurement time or have too short continuous working time, far exceeding the performance of other similar instruments.
Friendly human-machine interface: Data input via rotary mouse is convenient and fast, can independently set the instrument 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, upload measurement data to the computer for further analysis and processing by test personnel.
(9) Easy to use: Small size, light weight, easy to carry.
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 method: Large screen Chinese LCD display
Communication method: USB or RS232 serial port
Working power supply: AC220V±10% 50Hz
Total power: 600W
Maximum stored records: 200 items
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 no display Check if there is AC power supply
Check the power cable
Check if the fuse inside the fuse holder is blown
Resistance value obviously too large or shows overrange during test Check if the measured resistance value is too large
Check if the voltage input wires are connected inside the current output wires
Check if the test leads polarity is reversed
Check if the voltage output wires are properly connected, and if the test piece connectors are oxidized
Rotary mouse no response Turn off the power and restart
Press the reset button to reset the instrument
Communication unsuccessful Check if the data cable is properly connected
Check if the instrument is in online mode
Uninstall the driver and reinstall it
Press the reset button to reset the instrument
