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MA220-EU-EN V1.5 7/09

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Introduction

Thank you for selecting the Extech MA220 AC/DC Clamp Meter. This meter measures
AC/DC Current, AC/DC Voltage, Resistance, Capacitance, Frequency, Duty Cycle,
Temperature, Diode Test, and Continuity. This professional meter, with proper care, will
provide years of safe reliable service.

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must
refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present

Double insulation

SAFETY NOTES

Do not exceed the maximum allowable input range of any function

Do not apply voltage to meter when resistance function is selected.

Set the function switch OFF when the meter is not in use.

Remove the battery if meter is to be stored for longer than 60 days.

WARNINGS

Set function switch to the appropriate position before measuring.

When measuring volts do not switch to current/resistance modes.

Do not measure current on a circuit whose voltage exceeds 240V.

When changing ranges using the selector switch always disconnect the test leads

from the circuit under test.

Do not exceed the maximum rated input limits.

OVERVOLTAGE CATEGORY III

This meter meets the IEC 610-1-95 standard for OVERVOLTAGE CATEGORY III. Cat III
meters are protected against overvoltage transients in fixed installation at the distribution
level. Examples include switches in the fixed installation and some equipment for industrial
use with permanent connection to the fixed installation.

Summary of Contents for MA220

Page 1: ...User s Guide 400A AC DC Clamp Meter Model MA220...

Page 2: ...ltage to meter when resistance function is selected Set the function switch OFF when the meter is not in use Remove the battery if meter is to be stored for longer than 60 days WARNINGS Set function s...

Page 3: ...000V 2 5 digits 40 00V 400 0V 600V 2 5 digits Resistance 400 0 1 0 4 digits 4 000k 1 5 2 digits 40 00k 400 0k 4 000 M 2 5 3 digits 40 00M 3 5 5 digits Capacitance 40 00nF 5 30 digits 400 0nF 3 5 digit...

Page 4: ...per second nominal Input Impedance 7 8M V DC and V AC Operating Temperature 5 C to 40 C 41 F to 104 F Storage Temperature 20o C to 60o C 4o F to 140o F Operating Humidity Max 80 up to 31 C 87 F decre...

Page 5: ...Mode select button 8 Range select button 9 Hz Duty Cycle button 10 COM input jack 11 V Temp jack 12 Battery cover rear AC AC alternating current DC DC direct currrent Minus sign AUTO AutoRange mode ZE...

Page 6: ...positive V Temp jack 3 Select AC or DC with the MODE button 4 Connect the test leads to the circuit under test 5 Read the voltage on the display The display will indicate the proper decimal point and...

Page 7: ...uty Cycle Measurements 1 Turn the rotary switch to the Volts Hz position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack...

Page 8: ...the meter before opening the case Do not operate with open case Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is n...

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