Some common usage methods of digital clamp meters are as follows:
1. AC current measurement
①Turn the switch to ACA1000A gear.
②Keep the switch in the relaxed state.
③Press the trigger to open the jaws and clamp one wire. If more than two wires are clamped, the measurement will be invalid.
④ Read the value. If the reading is less than 200A, turn the switch to the ACA200A gear to improve accuracy. If the environmental conditions limit, such as the dark place, you cannot directly read the value, press the hold button, and read it in a bright place.
2. AC and DC voltage measurement
① When measuring DC voltage, turn the switch to ACA200A; when measuring AC voltage, turn the switch to ACV750V.
②Keep the switch in the relaxed state.
③Connect the red test lead to the "V/Ω" terminal, and the black test lead to the "COM" terminal.
④ Connect the red and black test leads to the circuit under test in parallel.
3. Resistance measurement
① Turn the switch to the electric resistance of the appropriate range.
②Keep the switch in the relaxed state.
③The red test lead is connected to the "V/Ω" terminal, and the black test lead is connected to the "COM" terminal.
④The red and black test leads are respectively connected to both ends of the measured resistance. When measuring the resistance of the line, the line should be disconnected from the neutral source, and the one connected to the resistance should be discharged.
4. Continuity test
① Turn the switch to 200n.
②The red and black test leads are respectively connected to the "V/Ω terminal and COM" terminal.
③If the resistance between the red and black test leads is less than (50±25)Ω, the built-in buzzer will sound.
1-Clamp head 2-Clamp head trigger 3-Hold switch 4-Rotary switch 5-Display 6-Insulation test accessory interface 7-Common ground terminal 8-Voltage resistance input terminal 9-Hand strap.
5. High resistance measurement
①Turn the switch to "EXTERNALUNlT" 20MΩ or 2000MΩ.
②The displayed value is unstable and in a free state.
③ Insert the 3 plugs of the test accessory into the 3 input jacks of the clamp meter.
④The clamp meter switch and the range switch of the test accessory are all placed in the 2000MΩ position.
⑤ The input terminal of the test accessory is connected to the measured resistance;
⑥ Put the test accessory in the "ON" position, press the "PUSH" button, the indicator light is on, and the display shows the measured value. If the reading is less than 19MΩ, the range of the clamp meter test accessory should be set to 20MΩ to improve accuracy. Spend.
