BK820A DC brushless fan speed tester DC/AC fan tester, equipped with current, voltage, and power display, product configuration 7-inch color touch screen, resolution 800*480, easy to use, just connect the fan to the tester to test the speed. Its built-in oscilloscope function can display the current wave and FG signal wave at the same time. Use the infrared sensor detector, set the working mode to infrared sensor mode, set the number of blades on the [System Settings] interface to be the same as the number of fan blades to be tested, and point the infrared sensor to the fan blades for testing, or you can use it directly Insert the infrared head into the infrared connector interface for direct testing.

Product features:

1) The performance of the product is reliable, the shell is made of aluminum alloy, and the overall size is 355x200x155mm

2) 7-inch color touch screen with a resolution of 800x480. Except for the voltage value, which needs to be set by pressing the button, other parameters are all set on the touch screen.

3) Built-in 0-52V 5A programmable power supply can easily set any voltage value. When the load changes, the power supply will adjust the voltage to keep the same as the set voltage.

4) Built-in oscilloscope function, current waveform, and FG signal waveform can be displayed at the same time; current wave voltage 50mV, 100mV, 200mV, 500mV, 1.0V five levels are optional, FG waveform voltage 1.0V, 2.0V, 5.0V, 10V four levels are available to select. There are six options for time: 250us, 500us, 1.0ms, 2.5ms, 5ms, and 10ms.

5) It is easy to use, just connect the fan to the tester to test the speed, and it has the function of fan polarity reverse connection and short circuit protection.

6) Speed, current, voltage, and power display, can be used as a program-controlled DC power supply alone.

7) DC fan test: It can test 2-wire, 3-wire, 4-wire PWM, and brushless fans with FG and RO signals.

8) AC fan test: use the infrared sensor head to test, you do not need to make any marks on the fan during the test, and you can accurately test the speed.

Product parameters:

Input voltage: AC170-230V

Output voltage: DC 0V-52V error<±0.2V

Output current: Maximum output peak current: 5A 0-300mA<±2mA 300mA-5A<±5mA

Current display: 5mA-999mA 1.000A-5.000A

Speed range: 0-65000RPM error<+1%

Number of fan blades: 0-99 adjustable

PWM duty cycle: 0-100% duty cycle can be adjusted arbitrarily (default frequency 25KHz)

PWM output frequency: 25KHz, 6.25KHz, 1.0KHz, 200Hz, 100Hz five optional

Oscilloscope display range: 50mV-50V 250uS-10mS

Display introduction:

1. Main interface diagram

Precautions:

1) If you are testing an AC fan, please use an external AC power supply. If you are testing a DC fan with an infrared sensor, you can power the fan from any channel for testing. If it is found that the test cannot be performed, please check whether the input connection line is open (this connection line is not guaranteed); if it is open, please refer to the input introduction to connect it yourself; it is best to use an adapter board for fan testing.

2) In 3-wire PWM mode, there is no FG signal. Because of the current detection method, the current signal also becomes very small when the PWM duty cycle is small. When testing some types of fans, it may not be tested, or the tested speed is inaccurate, and our company does not guarantee that all models of fans can be fully tested in this mode (you can choose to test only two stages of 0% and 100%)

3) The actual voltage changes when the indicator light (run red light is on). Try not to test the fan at this time so as not to burn the fan.

4) The USB interface on the front panel can only be used to connect the universal adapter board and cannot be used to charge the mobile phone or use it as a USB.

5) The infrared sensor head of BK820C and BK820A cannot be used in common, and the wiring in the aviation plug is different.

6) There is high pressure inside, and non-professionals are strictly forbidden to disassemble the shell, or the consequences will be at their own risk.