Fluke 80 Series III user manual Models 85 and 87 AC Voltage Function Specifications, KHz 20 kHz2

Models: 80 Series III

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80 Series III

Users Manual

Table 11. Models 85 and 87 AC Voltage Function Specifications

Function

Range

Resolution

Accuracy1

K3

400.0mV

4.000 V

40.00V

400.0V 1000 V

0.1mV 0.001 V

0.01V

0.1V

1 V

50 Hz - 60 Hz

±(0.7% + 4)

±(0.7% + 2)

±(0.7% + 2)

±(0.7% + 2)

±(0.7% + 2)

45 Hz - 1 kHz

±(1.0% + 4)

±(1.0% + 4)

±(1.0% + 4)

±(1.0% + 4)

±(1.0% + 4)5

1 kHz - 5 kHz

±(2.0% + 4)

±(2.0% + 4)

±(2.0% + 4)

±(2.0% + 4)4

unspecified

5 kHz - 20 kHz2

±(2.0% + 20)

±(2.0% + 20)

±(2.0% + 20)

unspecified unspecified

1.Accuracy is given as ±([% of reading] + [number of least significant digits]) at 18°C to 28°C, with relative humidity up to 90%, for a period of one year after calibration. For Model 87 in the 4 ½-digit mode, multiply the number of least significant digits (coun ts) by 10. AC conversions are ac-coupled and valid from 5% to 100% of range. Models 85 and 87 are true rms responding. AC crest factor can be up to 3 at full scale, 6 at half scale. For non-sinusoidal wave forms add -(2% Rdg + 2% full scale) typical, for a crest factor up to 3.

2.Below 10% of range, add 6 counts.

3.Models 85 and 87 are true rms responding meters. When the input leads are shorted together in the ac functions, the meters display a reading (typically <25 counts) that is caused by internal amplifier noise. The accuracy on Models 85 and 87 is not significantly affected by this internal offset when measuring inputs that are within 5% to 100% of the selected range. When the rms value of the two values (5% of range and internal offset) is calculated, the effect is minimal as shown in the following example where 20.0 = 5% of 400 mV range, and 2.5 is the internal offset: RMS = SQRT[(20.0)2 + (2.5)2] = 20.16. If you use the REL function to zero the display when using the ac functions, a constant error that is equal to the internal offset will result.

4.Frequency range: 1 kHz to 2.5 kHz.

5.Below 10% of range, add 16 counts.

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Fluke 80 Series III user manual Models 85 and 87 AC Voltage Function Specifications, KHz 20 kHz2

80 Series III specifications

The Fluke 80 Series III digital multimeters are renowned for their robust engineering, precision, and versatility, making them a staple in the toolkit of electricians, engineers, and technicians. Launched by Fluke Corporation, a leading manufacturer of electronic test tools, the 80 Series III has set a benchmark in the multimeter industry for its reliability and performance.

One of the standout features of the Fluke 80 Series III is its wide measurement capabilities. The device can accurately measure AC and DC voltage, DC current, resistance, frequency, and capacitance. This comprehensive feature set allows users to tackle a variety of tasks, from simple household electrical checks to complex industrial applications. The meter's high input impedance prevents loading effects on circuits, ensuring accurate readings, especially in sensitive electronic applications.

Fluke's proprietary True-RMS technology is another defining characteristic of the 80 Series III. This technology ensures that the multimeter provides accurate readings for both non-linear loads and distorted waveforms, which are common in many modern electrical systems. This capability is particularly valuable in diagnosing issues in variable frequency drives, inverters, and other electronic systems that do not present traditional sinusoidal waveforms.

Durability is a key factor in the design of the Fluke 80 Series III. The multimeter is housed in a rugged, impact-resistant case that can withstand the rigors of fieldwork. It features a built-in protective holster with a probe holder, enhancing portability while safeguarding the device against drops and bumps. Furthermore, the 80 Series III boasts an IP67 rating for dust and water resistance, ensuring reliable performance in adverse conditions.

User-friendliness is also a significant aspect of the Fluke 80 Series III. The large, easy-to-read display, combined with intuitive controls, allows users to navigate its functions with ease. The multimeter features a backlight, enabling use in dimly lit environments, while the hold function ensures that readings can be captured and displayed even after disconnecting the probes.

In addition to these features, the Fluke 80 Series III offers various models to cater to specific needs, such as the 87V for highly accurate measurements in industrial environments and the 86V for temperature measurements with added thermocouple support. Each model maintains the high standards of quality and performance that Fluke is known for.

In summary, the Fluke 80 Series III digital multimeters combine advanced features, high accuracy, and rugged durability, making them indispensable tools for professionals who require reliable performance in challenging environments. Whether for routine maintenance or complex troubleshooting, the 80 Series III offers everything necessary to meet the demands of today’s electrical tasks.