How to use a fluke 87V MAX True-rms Multimeter?
Using a Fluke 87 True RMS Multimeter requires several steps to ensure accurate and safe measurements. Here's how to use it:
- Preparation:
- Safety First: Always prioritize safety. Wear appropriate personal protective equipment (PPE) and adhere to standard safety procedures.
- Check the meter: Inspect the multimeter and test leads for damage. Replace any damaged parts before using.
2. Understanding the Controls:
- Rotary Switch: Used to toggle between measurement modes (e.g., voltage, current, resistance).
- Input Terminals: Different jacks for various measurements.
- Buttons for various functions such as HOLD, MIN/MAX, and REL.
3. Voltage Measurements:
1. Set the rotary switch:
- To adjust the AC voltage, turn the rotary switch to V~.
- To adjust the DC voltage, turn the rotary switch to V⎓.
2. Connect the Test Leads:
- Connect the black lead to the COM terminal.
- Connect the red lead to the VΩ terminal.
3. Measure:
- Touch the probe tips to the circuit where you want to measure the voltage.
- Read the value displayed on the screen.
4. Measuring Current:
1. Set the Rotary Switch:
- For AC: Turn the rotary switch to A~.
- For DC: Turn the rotary switch to A⎓.
2. Connect the Test Leaders:
- Connect the black lead to the COM terminal.
- Connect the red lead to the appropriate current terminal (A for high current and mA/µA for low current).
3. Measure:
- Break the circuit where you want to measure the current, then connect the meter in series.
- Read the value shown on the screen.
5. Measuring Resistance:
1. Set the Rotary Switch:
- Rotate the rotary switch to the Ω symbol.
2. Connect the Test Leads:
- Plug the black lead into the COM terminal.
- Plug the red lead into the VΩ terminal.
3. Measure:
- Apply the probe tips to the capacitor leads.
- Read the value shown on the screen.
8. Additional Functions:
- Min/Max/Average: Use the MIN/MAX button to track the minimum, maximum, and average values over time.
- Hold: Press the HOLD button to freeze the current measurement.
- Relative Mode: Use the REL button to establish a reference value and calculate the relative difference.
9. Auto/Manual Ranging:
- The Fluke 87 can automatically select a range, but you can also set it manually by pressing the RANGE button.
Tips:
- When measuring unknown voltages or currents, begin at the highest range and work your way down to avoid damaging the meter.
- Disconnect Power: Before measuring resistance, continuity, or capacitance, make sure the circuit is de-energized.
- Calibration: Regularly calibrate your multimeter to ensure accuracy.
By following these steps, you can effectively use a Fluke 87 True RMS Multimeter for various electrical measurement