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Radio Shack 22-218 owner manual Making Accurate Measurements

Models: 22-218

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MAKING ACCURATE MEASUREMENTS

MAKING ACCURATE MEASUREMENTS

For the most accurate reading, the temperature should be be- tween 43°F and 74°F (6°C and 23°C) with an 80% maximum relative humidity.

Keep the meter lying flat on a non-metallic surface. Also, use a range setting that results in a reading in the upper third of the meter scale.

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Radio Shack 22-218 owner manual Making Accurate Measurements

Contents

8-RangeMultitester Please read before using this equipmentCat. No FEATURES Cautions A WORD ABOUT SAFETY Page Page Page Accuracy SPECIFICATIONSRanges Weight Operating TemperatureStorage Temperature DimensionsSPECIAL PANEL MARKINGS Page INSTALLING A BATTERY WARNINGSFollow these steps to install the battery 3. Remove the back of the meter5.Replace the back and secure it with the screw WARNINGS REPLACING THE FUSEYour meter is protected by a 315 mA fuse Follow these steps to replace the fuse 5.Replace the back and secure it with the screw 3.Remove the back of the meter4.Replace the blown fuse with a new one OPERATION CautionsWarnings MAKING ACCURATE MEASUREMENTS Page Zero Adjustment MEASURING VOLTAGEMeasuring High Voltages Page Measuring DC Voltage 3.Read the voltage on the scale Follow these steps to measure DC voltage2.Connect the test probes to the circuit Measuring AC Voltage 3.Read the voltage on the scale Follow these steps to measure AC voltage2.Connect the test probes to the circuit Measuring 3-PhaseAC Voltage 600volts, the line-to-linevoltage would be 600 Volts x 1.732 = 1039.2 Volts Measuring AC Voltage on a DC Source Bias MEASURING DC CURRENT 1. Set the function selector to 150 mA DCPage MEASURING RESISTANCE WARNINGSPage Page MAINTENANCE Page Page RADIO SHACK A Division of Tandy Corporation We Service What We Sell