The Fluke 87 multimeter is a staple for many field service technicians. To ensure accuracy, an instrument must be tested regularly. The manufacturer recommends at least an annual Fluke 87 multimeter calibration interval. Testing may need to be more frequent depending on usage, damage, and past testing history.
Why Calibrate a Multimeter?
Multimeters are electronic measuring instruments that perform multiple measurement functions. The Fluke 87 multimeter can measure voltage, resistance, and current. Some models can also perform temperature readings. Each function of the multimeter must be tested to ensure reading accuracy. The only way to determine validity is during Fluke 87 multimeter calibration testing.
Testing for Accuracy
Fluke 87 multimeter calibration testing includes separate checks for each function. Voltage, resistance, and current testing occurs at multiple ranges. Temperature is tested between 0 °C to 100 °C for 1% + 10 least significant digits. Test data will be included on the certificate of calibration.
Interval Determination Factors
Any type of test equipment can drift over time, but certain factors make this more likely. Exposure to high heat or humidity can negatively impact the effectiveness of a multimeter. It is recommended to store multimeters in their protective cases in a climate controlled area.