Battery capacity tester electronic load cell can connect to computer TEC-12P. | Обустройство дома

TEC-12P is mainly developed for the detection of large capacity batteries. Main limit index: Detectable maximum capacity: 500AH Maximum power 200W! Current range 0.5~20A! The maximum detection voltage is 60V. The radiator is connected to the battery. Please operate at a safe voltage. Current error: full range <0.5%! Description: TEC-12P battery capacity measuring instrument has the following characteristics: 1. encoding switch (shuttle) operation, convenient and simple, beautiful appearance. 2., the current is accurate, and the error of the current full range is within 0.5%. 3., integrated with temperature sensor, fan is not opened below 38 C, fan is opened above 45 degree C, and current is automatically reduced at 77 C. 4., the highest access voltage is 60V, and the shutdown voltage can be adjusted freely, between 0.9V~60V and step 0.1V. 5., when the actual current is less than 40% of the set current, the detector will stop and discharge. 7. 12VDC power supply, interface 5.5*2.1 (positive and negative external), the current is about 300mA. 8. the sound alarm after the test is completed. 9. the maximum detection capacity 500AH. 10., there is external resistance access port. When the demand power exceeds 200W, it can access external resistance and increase discharge power. The 4 bit digital tube is used. The 5 LED lights correspond to 5 numerical values: capacity, measurement voltage, turn off voltage, current and temperature. All kinds of display can be switched by the rotary switch. The capacity is AH, and the four digit effective number is displayed. Voltage is measured in volts, three digits display, the bottom is U; The current unit is A, four - bit effective digital display; The unit of temperature is centigrade, and the three digit effective number is displayed. How to set the discharge current: Rotating switch to "current" display mode, at this time display the set of current, under the switch, the "current" LED light flicker, the other LED is all bright, representing the current setting mode, at this time the rotating switch can adjust the size of the current, clockwise increase, counter clockwise decrease. After setting up, press the switch to exit the current setting mode. The operation is simple, and the hand will be. The minimum adjustment step length below 5A is 0.1A; the minimum adjustment step length above 5A is 0.5A. After adjustment, this parameter will be stored in the tester, and the power will also be maintained. The current can also be adjusted in the detection process. How to set off the off voltage: It is the same as the current setting method. The switch to "turn off voltage" display mode, at this time display the set cut-off voltage, in this state the switch, the "cut-off voltage" LED light flicker, the other LED is all bright, representing the cut-off voltage setting mode, at this time the rotary switch can adjust the size of the cut-off voltage, clockwise increase, counter clockwise reduction . After setting up, press the switch to exit the setting mode. The minimum adjustment step is 0.1V. The cut-off voltage can also be adjusted in the detection process. After adjustment, this parameter will be stored in the tester, and the power will also be maintained. Usage method： 1. connect the tested battery, connect to the battery access terminal according to the indicator port, if you need to connect the external resistance, then connect it to the external access port. 2. set off the off voltage. 3. set the discharge current. This current is the largest discharge current. If the power exceeds the limit parameter of the detector, the tester will automatically adjust. 4. start: Mode 1 start: start by switch in "capacity" display mode, then stop according to switch, the measured voltage that starts at this position is open circuit voltage and should be started in the case of external resistance access. Mode 2 starts: in the "measured voltage" display mode, the switch is also activated, and the measured voltage under the startup mode is on-line voltage. 5., the detection is completed: after the completion of the digital tube flickering display, the LED lamp no longer flickers. The final capacity will be displayed on the digital tube. In any state, press the 2 second switch for a long time to clear the previous test results. Wheel display function: in the "temperature" display mode, switch to enter the display status. Each parameter stays for three seconds, and the order of the wheel display is the capacity - the detection voltage - the off voltage - the current - the temperature - the capacity.... at this time, the wheel can be finished by the switch in any state of display. Matters needing attention： Please do not touch the bottom circuit board components during the testing process. First, avoid scalding. Two, it is possible to reset the microcontroller. Thank you. A brief description of the principle of work: By using the constant current control technology, the discharge current of the battery is always set, and it does not change with the voltage of the battery. If the internal resistance of the battery is too high, the discharge current can not reach the set value, and the current detector will automatically adjust the current. The discharge time is calculated by single chip microcomputer. The capacity is finally measured. On the accuracy of measurement: The measurement error of voltage is 0.4%+50mV, which has little effect on the measurement error of battery capacity. The setting error of current is that the error of full range is less than 0.5%. Measurement error of capacity: <1% Thank you for choosing the product of my studio. We strive to be perfect. If there is any defect, please correct me. Thank you.