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Features:
1.The internal resistance tester adopts a 32-bit core controller and its unique high-precision sampling (more than 14-bit AD) technology to achieve micro-european precision measurement;
2.This internal resistance tester measures voltage and internal resistance parameters at the same time, with true accuracy of one ByteDance and basic accuracy of 0.2%;
3.Kelvin four-wire test clamp, new mold upgrade, LCD display;
4.The internal resistance tester is calibrated at two points in independent stages to ensure minimal nonlinear error;
5.Good practical performance, lithium battery power supply, Micro USB port charging and communication; The algorithm has built-in trigonometric function, Kalman filter, etc. to achieve micro-european stability measurement.
Parameters:
MICRO power supply: DC5V 1A
Basic accuracy of resistance: 0.2%
Basic accuracy of voltage: 0.2%
Resistance measurement range: 1u Ω~200 Ω
Voltage measurement range: 0.1mV~100V (DC)
Test signal: sine AC 1KHz
Test signal current:
20m Ω gear 50mA
200m Ω/2 Ω gear 5mA
20 Ω/200 Ω gear 0.5mA
Communication baud rate: 115200 (default)
Product size: 16.5 * 8 * 2.8cm
Setting description:
The internal resistance tester has five keys:
Resistance key (upper), power/confirm key (middle), voltage key (lower), setting key (left), and return key (right).
Briefly press the power button to start the machine, and then press the menu button to enter the setting menu (see the following table for details):
Numbering option function
1. Calibrate the resistance independently at each electrical and positive gear
2. Calibrate the high and low voltage gears independently
3. Calibrate the zero point voltage. Short circuit the test clamp to calibrate the zero point before calibrating the anode
4 Serial port baud rate Modify communication baud rate
5 Shutdown time Set the automatic shutdown time of the instrument
6 Switching between Chinese and English operating languages
7 Instrument information equipment version information
Description of calibration steps: (shipment after calibration)
(1) Zero calibration:
Briefly press the power key to start the machine, and then briefly press the menu key to enter the setting menu. Briefly press the menu key to select the option to enter. After the cursor selects the calibration zero point, briefly press the OK key to enter. Short-circuit the test clamp according to the screen prompt, press the confirmation key to prompt that the calibration is complete, and finally press the return key to exit.
(2) Resistance calibration: (detailed operation in the video)
Briefly press the power key to start the machine, and then briefly press the menu key to enter the setting menu. Briefly press the menu key to select the option to enter, and briefly press the OK key after the cursor selects the calibration resistance. Briefly press the menu key again to switch the gear to be calibrated, and press the OK key to enter the gear calibration procedure. At this time, connect the calibration resistor 1 according to the screen prompts, wait for the value to stabilize, and press the OK key. Connect the calibration resistor 2 again according to the screen prompt, wait for the value to stabilize, press the confirmation key to prompt that the calibration is successful, and finally press the return key to exit.
(3) Voltage calibration:
Briefly press the power key to start the machine, and then briefly press the menu key to enter the setting menu. Briefly press the menu key to select the option to enter, and briefly press the OK key to enter after the cursor selects the calibration voltage. Briefly press the menu key again to switch the high and low voltage gear, press the OK key to enter the gear calibration procedure, at this time, connect the calibration voltage 1 according to the screen prompt, wait for the value to stabilize, and press the OK key. Connect the calibration voltage 2 according to the screen prompt again, wait for the value to stabilize, press the confirmation key to prompt that the calibration is successful, and finally press the return key to exit.
Note: All internal resistance testers are tested and calibrated at the factory. Users should use this function carefully if they do not have calibration conditions. Before voltage and resistance calibration, it is necessary to calibrate the zero point first, and then calibrate the gear to be calibrated. The calibrations of voltage and resistance are independent of each other.