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Fluke 80 Series III user manual Switch Box

Models: 80 Series III

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Making Measurements

The following are some tips for measuring voltage:

∙When you measure voltage, the meter acts approximately like a 10 MΩ (10,000,000 Ω) impedance in parallel with the circuit. This loading effect can cause measurement errors in high- impedance circuits. In most cases, the error is

negligible (0.1% or less) if the circuit impedance is 10 kΩ (10,000 Ω) or less.

∙For better accuracy when measuring the dc offset of an ac voltage, measure the ac voltage first. Note the ac voltage range, then manually select a dc voltage range equal to or higher than the ac range. This procedure improves the accuracy of the dc measurement by ensuring that the input protection circuits are not activated.

AC Voltage

87 III TRUE RMS MULTIMETER

		MIN MAX RANGE		HOLD	Switch Box
			REL	Hz
	41/2 DIGITS	PEAK MIN MAX
	1 Second
		mV
	V			mA
	V			A
V	V			μA
V	OFF
	A	mA μA COM V
				!
			400mA MAX	CAT II
	10A MAX		FUSED	1000V MAX
	FUSED		!

DC Voltage

			87 III TRUE RMS MULTIMETER
			MIN MAX	RANGE	HOLD
				REL	Hz
	41/2 DIGITS	PEAK MIN MAX
	1 Second
		mV
V	V				mA
	V				A
	V				μA
	OFF
	A	mA μA COM V				+
					!
			400mA MAX		CAT II
	10A MAX		FUSED		1000V MAX
	FUSED		!

iy2f.eps

Figure 2. Measuring AC and DC Voltage

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Image 21

Fluke 80 Series III user manual Switch Box

Contents

Series Lifetime Limited Warranty Table of Contents Series List of Tables Series List of Figures Series Introduction Series International Electrical SymbolsSafety Information Your Meter’s Features TerminalInputs Description Rotary Switch Positions Function Switch PositionPushbuttons Button Function Button FunctionButton Display Features Model 87 Shown Number Feature Display Features Indication100 ms ΜA, mA ΜF, nF Me, ke Hz, kHz, MHz Display Features NumberAutomatic Power-Off Power-Up OptionsInput Alert Feature Making MeasurementsMeasuring AC and DC Voltage Switch Box Testing for Continuity For in-circuit tests, turn circuit power off Measuring Resistance Isolating a Resistor DisconnectMeasuring Capacitance Using Conductance for High Resistance or Leakage TestsMeasuring Capacitance Series Testing a Diode Testing DiodesMeasuring AC or DC Current WWarningCurrent through one component Series Measuring Frequency All ranges Components of Duty Cycle Measurements Measuring Duty CycleAnalog Bar Graph Determining Pulse WidthModel 87 Bar Graph Models 83 and 85 Bar Graph 2 Digit Mode ModelMIN MAX Recording Mode MIN MAX Functions ButtonTouch Hold Mode Relative ModeZoom Mode Models 83 Maintenance Uses for the Zoom Mode Models 83General Maintenance 00.5 Ω Replace fuse OL Testing the FusesTouch top half Input contactsReplacing the Fuses Replacing the BatteryService and Parts Battery and Fuse Replacement Replacement Parts Fluke Part Or Model NumberQuantity Replaceable Parts Fluke Part Number AccessoriesSpecifications KHz 20 kHz2 Models 85 and 87 AC Voltage Function SpecificationsModel 83 AC Voltage Function Specifications Model Resolution Model Model 853 Burden Voltage Typical Current Function SpecificationsΜA B Frequency Counter Specifications Capacitance and Diode Function SpecificationsAccuracy Frequency Counter Sensitivity and Trigger LevelsElectrical Characteristics of the Terminals MIN MAX Recording Specifications