Extech Instruments MA220 User Manual

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User’s Guide

400A AC/DC Clamp Meter

Model MA220

MA220-EU-EN V1.5 7/09

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 ofsafe reliable service.

Safety

International Safety Symbols

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

This symbol, adjacentto a terminal, indicates that, undernormal use, hazardous voltages may be present

Double insulation

SAFETY NOTES

 Do not exceed the maximum allowableinput range of any function  Do not apply voltage tometer when resistance function is selected.  Set the function switch OFF whenthe meter isnot in use.  Remove the battery if meter isto be stored for longer than 60 days.

WARNINGS

 Set function switch to the appropriateposition before measuring.  When measuring volts do not switch to current/resistancemodes.  Do not measure current ona circuit whosevoltage exceeds 240V.  When changing ranges using the selectorswitch always disconnect the test leads

from the circuit under test.

 Do not exceed the maximum ratedinput limits.

OVERVOLTAGE CATEGORY III

This meter meets the IEC 610-1-95 standard for OVERVOLTAGE CATEGORY III. Cat III meters are protectedagainst overvoltage transients in fixed installation at the distribution level. Examples include switches in thefixed installation andsome equipment for industrial use with permanentconnection to the fixed installation.

MA220-EU-EN V1.5 7/09

Specifications

Function

Range

Accuracy (of

reading)

DC Current 40.00 ADC

0-20.00 ADC ± (2.5% + 6 digits)

20.00-40.00 ADC ± (3% + 6 digits)

400.0 ADC

0-300.0 ADC ± (2.5% + 6 digits)

300.0-400.0 ADC ± (3.5% + 6 digits)

AC Current 40.00 AAC

0-20.00 AAC ± (3% + 10 digits)

20.00-40.00 AAC ± (5% + 10 digits)

400.0 AAC 0-300.0 AAC ± (3% + 10 digits)

300.0-400.0 AAC ± (5% + 10 digits)

DC Voltage

400.0mV± (0.8% + 3

digits)4.000V

± (1.5% + 3 digits)40.00V

400.0V 600V ± (2.0% + 3 digits)

AC Voltage 400.0mV ± (1% + 10 digits)

4.000V ± (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

400.0



4.000 M

± (2.5% + 3 digits)

40.00M

± (3.5% + 5 digits)

Capacitance 40.00nF ± (5% + 30 digits)

400.0nF ± (3% + 5 digits)

4.000µF ± (3.5% + 5 digits)

40.00µF

100.0µF ± (5% + 5 digits)

Frequency

5.000Hz

± (1.5% + 5

digits)

50.00Hz

± (1.2% + 2 digits) Sensitivity: 5~5KHz: 10Vrms min. 5KHz~150KHz: 40Vrms min.

500.0Hz

5.000KHz

50.00KHz

150.0KHz

Duty Cycle 0.5% to 99.0% ± (1.2% + 2 digits)

Pulse Width: 100µs-100ms,Frequency: 5Hz to 150KHz

Temperature -50.0 to 400.0°C

-50.0 to -20.0°C ± 7°C

-20.0 to 400.0°C ± (3% + 5 °C)

400 to 1000°C

-58.0 to 400.0°F

-58.0 to 0°F ± 14°F

0 to 400.0°F ± (2.5% + 6 digits)

400 to 1832°F

400 to 1832°F ± (3% + 7°F)

MA220-EU-EN V1.5 7/09

Jaw size 23mm (0.9") approx. Display 4000 count LCD

Continuity Audible tone < 150 approx. Diode Test Open circuit voltage < 1.5VDC;

Test current 0.3mA(typical)

AC V bandwidth 50Hz to 400Hz AC A bandwidth 50/60Hz Low battery indication “ ” is displayed Overrange indication “OL” is displayed Auto Power OFF After 30 minutes Measurement rate 2 per second, nominal Input Impedance 7.8MΩ (V DC and V AC) Operating Temperature 5ºC to 40ºC(41ºF to 104ºF) Storage Temperature -20oC to 60oC (-4oF to 140oF) Operating Humidity Max 80% up to 31ºC (87ºF) decreasing linearly to 50% at 45ºC

(113ºF)

Storage Humidity <80% Operating Altitude 2000meters (6560ft.) operating Batteries (2) 1.5V AAA batteries Weight 200g (0.44lb) Size 200x50x35mm (7.87” x1.97” x 1.38”) Safety For indoor use and in accordance with the requirements for

double insulation to IEC1010-1 (1995):EN61010-1 (1995) Overvoltage Category III, Pollution Degree 2.

MA220-EU-EN V1.5 7/09

Meter Description

1. Conductor jaws

2. Jaw opening trigger

3. Function select switch

4. LCD Display

5. ZERO button

6. Data Hold andBacklight Button

7. 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

ZERO ZERO mode

•))) Audible Continuity

HOLD Data Hold mode

Low Battery icon

Diode test mode

m milli V Volts A Amps K kilo M Mega

Ω Ohms

°F Degrees Fahrenheit °C Degrees Centigrade

MA220-EU-EN V1.5 7/09

Operation

Notice: Read andunderstand all WARNING and CAUTION statementslisted in the safety section of this operation manual prior to using this meter. Set the function select switch to the OFF position when the meter is not in use.

DC/AC Current Measurements

Warning: Disconnect the test leads from the meter before making

current clamp measurements.

1. Set the Functionswitch to the 400ADC, 40ADC, 400AAC or 40AAC range. If the range of the measured is not known, select the higher range first then move to the lower range if necessary.

2. For DC current measurement, press theZERO key to null the meter display.

3. Press the trigger to open jaw. Fully enclose one conductor to be measured.

4. The clamp meter LCD will display the reading.

DC/AC Voltage Measurements

1. Set the rotary function 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 intothe positive (V/Temp) jack

3. Select AC or DC withthe MODE button

4. Connect the test leads to the circuit under test

5. Read the voltage on thedisplay. The displaywill indicate theproper decimal pointand value.

Resistance Measurements

1. Set the function switch to the  •))) CAP position.

2. Insert the black test lead banana plug into the negative(COM) jack Insert the red test lead banana plug into the positive (V Temp jack.

3. Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of thepart under test so the rest of the circuit will not interfere with the resistance reading.

4. Read the resistance on the display. The display will indicatethe proper decimal point and value.

Continuity Check

1. Set the function switch to the  •))) CAP position.

2. Push the mode button to indicate •))) on the display.

3. Insert the black lead banana plug into thenegative (COM) jack Insert the red test lead banana plug into the positive (V) jack.

4. Touch the test probe tips to the circuitor wire you wish to check.

5. If the resistance is less than approximately 150, the audible signal will sound. If the circuit is open, the display will indicate “OL.”.

MA220-EU-EN V1.5 7/09

Diode Test

1. Turn the rotary switch to the  •))) CAP position.

2. Insert the black test lead banana plug into the negative(COM) jack and the red test lead banana plug intothe positive (V jack.

3. Push the mode button to indicate on the display.

4. Touch the test probes to the diode under test. Typically for a normal diode, forward voltage will indicate0.4V to 0.7V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0Vand an open device will indicate “OL” in both polarities.

Capacitance Measurements

Warning: To avoid electrical shock,disconnect power to the unit under test and

discharge all capacitorsbefore taking any capacitance measurements. Remove the batteries and unplug the line cords.

1. Set the function switch to the  •))) CAP position.

2. Push the mode buttonto indicate nF on the display.

3. Insert the black lead banana plug into the negative(COM) jack and

insert the red test lead banana plug into the positive (VTemp) jack.

4. Press the ZERO key to null the meter display.

5. Touch the test probe tips to thecapacitor you wish to check.

6. Read the capacitance value on the display.

Frequency or % Duty 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 intothe positive (V jack.

3. Select Hz or % with the HZ/% button.

4. Touch the test probe tips to thecircuit under test.

5. Read the frequency on the display.

Temperature Measurements

1. Turn the rotary switch to the Temp position.

2. Insert the Temperature Probe into the negative (COM) and the (VTemp jacks, making

sure to observe correct polarity.

3. Select °C or °F with the MODE button.

4. Touch the temperature probe head to the part whose temperature you wish to measure.

Keep the probe touching the part under test until the reading stabilizes.

5. Read the temperature on the display.

Warning: To avoid electrical shock,be sure the thermocouple has been removed before changing to another measurement function.

Auto/Manual Ranging

The meter turns on in Autoranging mode. Press the RANGE button to enter manual ranging. Each press of the range button will step to the next range as indicated by theunits and decimal point location. Press and hold the RANGE button for two seconds to return to Autoranging mode.

Note: Manual ranging does not function in AC Current or Diode and Continuity check functions. In Temperature function, itwill change theresolution from 0.1° to 1°.

MA220-EU-EN V1.5 7/09

Data Hold

To freeze theLCD meter reading, press the HOLD button. While data hold is active, the HOLD display iconappears on the LCD. Press the HOLD button again to return to normal

operation.

Backlight

Press and hold the HOLD button for >2 seconds to turn the backlight on/off. Note: The HOLD feature will activatewhen the backlight is turned on. Press the HOLD

button again to exit the Hold feature.

Zero Button

Zeros Capacitance and DC Current measurements. Also allows the user to offset the meter by using the displayed value as the zero reference value. Press the

ZERO

key

momentarily to activate and to exit Zero mode.

Maintenance

WARNING: To avoid electrical shock, disconnect themeter from anycircuit, remove the test leads from the input terminals and turn OFF the meter before opening the case. Do not operate withopen case.

Cleaning and Storage

Periodically wipe the case with adamp cloth andmild detergent; do not use abrasives or solvents. If themeter is not to be used for periodsof longer than60 days, remove the batteries and store them separately

Battery Replacement

1. Remove the two rear Phillips head screws

2. Open the battery compartment

3. Replace the two 1.5V AAAbatteries.

4. Re-assemble the meter

You, as the end user, are legally bound (Battery ordinance) to return all used batteries and accumulators; disposal in the household garbage is prohibited!

You can hand over your used batteries / accumulators at collection points in your community or wherever batteries /accumulators are sold!

Disposal:

Follow the valid legal stipulations in respect of the disposal of the

device at the end of its lifecycle

Extech Instruments MA220 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual