Extech Instruments MA200 Manuale utente

User’s Guide

400A AC Clamp Meter

Model MA200

www.burntec.com

MA200 Version 1.4 06/06

Introduction

Thank you for selecting the Extech MA200 AC Clamp Meter. This meter measures AC

Current, AC/DC Voltage, Resistance, 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

A UL mark does not indicate that this product has been evaluated for the accuracy of its

readings.

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.

www.burntec.com

MA200 Version 1.4 06/06

Specifications

Function Range Accuracy (of reading)

2.000 ACA ± (2.5% + 10 digits)

20.00 ACA ± (2.5% + 4 digits)

200.0 ACA ± (2.5% + 4 digits)

AC Current

400 ACA ± (3.0% + 5 digits)

200.0mV, ± (1.5% + 30 digits)

2.000V

20.00V

200.0V

± (1.5% + 3 digits)

AC Voltage

600V ± (2.0% + 4 digits)

200.0mV ± (0.5% + 5 digits)

2.000V

20.00V

200.0V

± (1.2% + 3 digits)

DC Voltage

600V ± (1.5% + 3 digits)

200.0 ± (1.0% + 4 digits)

2.000k

20.00k

200.0k

± (1.5% + 2 digits)

2.000M ± (2.0% + 3 digits)

Resistance Ω

20.00M ± (3.0% + 5 digits)

Jaw size 0.9" (23mm) approx.

Display 3-1/2 digits (2000 counts) LCD

Continuity Audible tone < 120Ωapprox.

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 “BAT” is displayed

Overrange indication “OL” is displayed

Auto Power OFF After 15 minutes

Measurement rate 2 per second, nominal

Input Impedance 7.8MΩ(V DC and V AC)

Operating Temperature 41ºF to 104ºF (5ºC to 40ºC)

Storage Temperature -4oF to 140oF (-20oC to 60oC)

Operating Humidity Max 80% up to 87ºF (31ºC) decreasing linearly to 50% at

104ºF(40ºC)

Storage Humidity <80%

Operating Altitude 6560ft. (2000meters)

Batteries (2) 1.5V AAA batteries

Weight 0.44lb (200g)

Size 7.87” x 1.97” x 1.38” (200x50x35mm)

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.

www.burntec.com

MA200 Version 1.4 06/06

Meter Description

1. Transformer jaws

2. MAX Hold button

3. Hold button

4. LCD Display

5. COM Input Terminal

6. Jaw opening trigger

7. Function select switch

8. Voltage, Resistance Input Terminal

9. Mode Select Button

10. Backlight Button

11. Range Select Button

AC Alternating current

DC Direct currrent)

AUTO AutoRange mode

MAX MAX Hold mode

Diode test mode

•))) Audible Continuity

HOLD Data Hold mode

Low Battery icon

5 8 10

www.burntec.com

MA200 Version 1.4 06/06

Operation

NOTICES: Read and understand all warning and precaution statements listed 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.

AC Voltage Measurements

1. Set the rotary function switch to the VAC 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/Ω) jack

3. Touch the test probe tips to the circuit under test

4. Read the voltage in the display. The display will indicate

the proper decimal point and value

DC Voltage Measurements

1. Set the rotary function switch to the VDC 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/Ω) jack

3. Touch the test probe tips to the circuit under test. Be sure to observe

the correct polarity (red lead to positive, black lead to negative)

4. Read the voltage in the display. The display will indicate the proper

decimal point and value. If the polarity is reversed, the display will show

(-) minus before the value

www.burntec.com

MA200 Version 1.4 06/06

AC Current Measurements

WARNING: Ensure that the test leads are disconnected from

the meter before making current clamp measurements.

1. Set the Function switch to the 400 or 200A range. If the

range of the measured is not known, select the higher range

first then move to the lower range if necessary.

2. Press the trigger to open jaw. Fully enclose one conductor to

be measured.

3. The clamp meter LCD will display the reading.

Resistance Measurements

1. Set the function switch to the Ω•))) position.

2. Insert the black test lead banana plug into the negative

(COM) jack

Insert the red test lead banana plug into the positive (VΩ)

jack.

3. Touch the test probe tips across the circuit or part under

test. It is best to disconnect one side of the part under test

so the rest of the circuit will not interfere with the

resistance reading.

4. Read the resistance in the display. The display will

indicate the proper decimal point and value.

Continuity Check

1. Set the function switch to the Ω•))) position.

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

3. Insert the black lead banana plug into the negative

(COM) jack

Insert the red test lead banana plug into the positive

(VΩ) jack.

4. Touch the test probe tips to the circuit or wire you

wish to check.

5. If the resistance is less than approximately 30Ω, the

audible signal will sound. If the circuit is open, the

display will indicate “OL.”.

www.burntec.com

MA200 Version 1.4 06/06

Diode Test

1. Turn the rotary switch to the Ω•))) position.

2. Insert the black test lead banana plug into the negative

(COM)jack and the red test lead banana plug into the

positive (VΩ) jack.

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

4. Touch the test probes to the diode under test. Forward

voltage will indicate 400 to 700mV. Reverse voltage will

indicate “OL”. Shorted devices will indicate near 0mV.

Shorted devices will indicate near 0mV and an open

device will indicate “OL” in both polarities.

Data Hold

To freeze the LCD meter reading, press the data hold button. The data hold button is

located on the left side of the meter (bottom button). While data hold is active, the HOLD

display icon appears on the LCD. Press the data hold button again to return to normal

operation.

MAX Hold

To hold the highest reading on the LCD, press the MAX button. The max hold button is

located on the left side of the meter (top button). While data hold is active, the MAX display

icon appears on the LCD. The meter reading will not change as readings change, rather it

will only display the highest reading encountered since the max hold button was pressed.

Press the max hold button again to return to normal operation.

www.burntec.com

MA200 Version 1.4 06/06



Support Hotline (781) 890-7440

Tech support: Ext. 200; Email: [email protected]

Repair/Returns: Ext. 210; Email: repair@extech.com

Website: www.extech.com

Maintenance

WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the

test leads from the input terminals and turn OFF 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 not to be used for periods of longer than 60 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 AAA batteries.

4. Re-assemble the meter

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and

workmanship for one year from date ofshipment (a sixmonth limited warranty applies on sensors and cables). If it

should become necessary to return the instrument for service during or beyond the warranty period, contact the

Customer Service Department at (781) 890-7440 ext. 210 for authorization. A Return Authorization (RA)

number must be issued before any product is returned to Extech. The sender is responsible for shipping

charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to

defects resulting from action of the user such as misuse, improper wiring, operation outside of specification,

improper maintenance or repair, or unauthorized modification. Extech specifically disclaims any implied warranties

or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or

consequential damages. Extech's total liability is limited to repair or replacement of the product. The warranty set

forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.

Repair and Calibration Services

Extech offers complete repair and calibration services for all Extech products. For

periodic calibration, NIST certification or repair of any Extech product, call customer service

for details on services available. Extech recommends that calibration be performed on an

annual basis to insure calibration integrity.

including the right of reproduction in whole or in part in any form.

www.burntec.com

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