FLIR Extech Instruments MA150 Manuel utilisateur

User’s Guide

Model MA150

200A AC Mini Clamp-on Meter

MA150-EN-V2.1-3/12

Introduction

Congratulations on your purchase of Extech’s MA150 AC Mini Clamp Meter. This meter is shipped

fully tested and calibrated and, with proper use, will provide years of reliable service.

Meter Description

1. Current sense jaw

2. Non-contact AC voltage indicator light

3. Flashlight button

4. Rotary function switch

5. MAX hold and Backlight key

6. LCD display

7. Clamp trigger

8. MODE key

9. COM input jack

10. V Ωinput jack

Safety Information

!Caution! Refer to the explanation in this Manual

Double Insulation

This meter has been designed to be safe in use, but the operator must use caution in its operation.

The rules listed below should be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:

2. USE EXTREME CAUTION when working with voltages greater than 60VDC or 25VAC rms.

These voltages are considerd a shock hazard.

3. NEVER operate the meter unless the back cover and the battery/fuse door are in place and

fastened securely.

Input Limits

Function Maximum Input

AC Current 200A

AC/DC Voltage 600V AC/DC

Resistance, Diode, Continuity Test 600V AC/DC

MA150-EN-V2.1-3/12

Operation

AC Current Measurements

1) Set the Function switch to the 200A AC range.

2) Press the jaw trigger and clamp around, fully enclosing a single conductor.

Do not allow a gap between the two halves of the jaw. Refer to the diagram

at right for the correct way to enclose a single conductor.

3) Read the ACA value on the LCD.

AC/DC Voltage Measurements

1) Insert the black test lead into the negative COM terminal and the red test lead into the positive V

terminal.

2) Set the function switch to the V position.

3) Select AC or DC with the MODE button.

4) Connect the test leads in parallel to the circuit under test.

5) Read the voltage measurement on the LCD display.

Resistance and Continuity Measurements

1) Insert the black test lead into the negative COM terminal and the red test lead into the positive V

Ωterminal.

2) Set the function switch to the Ω position.

3) Use the MODE button to select resistance. The MΩicon will appear in the display.

4) Touch the test leads across the circuit or component under test. It is best to disconnect one side

of the device under test so the rest of the circuit will not interfere with the resistance reading.

5) For Resistance tests, read the resistance on the LCD display

6) For Continuity, use the MODE button to select continuity “•)))”. The display icons will change

when the MODE button is pressed.

7) If the resistance is <120 Ω  a tone will sound.

Diode Test

1) Insert the black test lead banana plug into the negative COM jack and the red test lead banana

plug into the positive V Ωjack.

2) Set the function switch to the Ωposition.

3) Press the MODE button to indicate on the display.

4) Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400 to

0.700V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0V and an open

device will indicate “OL” in both polarities.

Yes

MA150-EN-V2.1-3/12

Non-Contact AC Voltage Detection

1) AC Voltage detection operates on any of the three Function switch positions.

2) Touch the probe tip to the hot conductor or insert into the hot side of the electrical outlet.

3) If AC voltage is present, the detector light will illuminate.

NOTE: The conductors in electrical cord sets are often twisted. For best results, slowly slide the

probe tip along a length of the cord to assure placing the tip in close proximity to the live

conductor.

NOTE: The detector is designed with high sensitivity. Static electricity or other sources of energy

may randomly turn the detector light on. This is normal operation

MAX Hold

To hold the highest reading on the LCD, momentarily press the “MAX ” key. 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 the meter to normal

operation.

Backlight

Press and hold the “MAX ” key for more than one second to turn the backlight on. This will also

activate the MAX Hold function. To release the MAX Hold function and return the meter to normal

operation, press the “MAX ” key momentarily. The backlight will automatically turn off after 15

seconds. To manually turn off the backlight, press and hold the “MAX ” key for more than 1 second.

Flashlight

Press and hold the top button to turn the flashlight on. Release the button to turn the flashlight off.

WARNING: Risk of Electrocution. Before use, always test the Voltage Detector on a

known live circuit to verify proper operation

MA150-EN-V2.1-3/12

Specifications

General Specifications

Display 2000 count Digit LCD with white LED backlight

Polarity Minus sign (-) indicates negative polarity

Jaw opening 0.7” (18mm)

Current sensor Hall effect sensor type

AC Current Bandwidth 50/60Hz

AC Voltage Bandwidth 50/400Hz

Overload indication “OL” displayed on the LCD

Display rate 2 readings/second, nominal

Battery Two 1.5V AAA batteries

Low Battery indication “BATT” displayed on the LCD

Auto Power off approx. 15 minutes

Operating conditions 32 to 86ºF (0 to 30ºC) 90%RH; 86 to 104ºF (30 to 40ºC) 75%RH; 104 to

122ºF (40 to 50ºC) 45%RH

Storage conditions - 14 to 140ºF (-30 to 60ºC); < 90% Relative Humidity

Altitude Operate at less than 3000 meters

Weight 6.2 oz. (176g) including battery

Dimensions 6.5 x 2.6 x 1.3” (164 x 65 x 32mm) (HWD)

Standards For indoor use and in accordance with the requirements for double

insulation to IEC1010-1 (1995): EN61010-1 (1995) Overvoltage Category

III 300V and Category II 600V, Pollution Degree 2.

MA150-EN-V2.1-3/12

Range Specifications

Function Range Resolution Accuracy (of reading)

AC Current 200.0A 0.1A ± (2.5% rdg + 10 digits)

200.0mV 0.1mV ±(0.5% rdg + 5 digits)

2.000V 1mV

20.00V 10mV

200.0V 0.1V

±(1.2% rdg + 3 digits)

DC Voltage

600V 1V ±(1.5% rdg + 3 digits)

2.000V 1mV

20.00V 10mV

200.0V 0.1V

±(1.5% rdg + 3 digits)

AC Voltage

600V 1V ±(2.0% rdg + 4 digits)

Resistance 200.0Ω 0.1Ω ±(1.0% rdg + 4 digits)

2.000kΩ 1Ω

20.00kΩ 10Ω

200.0kΩ

100Ω

±(1.5% rdg + 2 digits)

2.000MΩ 1kΩ ±(2.0% rdg + 3 digits)

20.00MΩ 10kΩ ±(3.0% rdg + 5 digits)

Non-Contact AC Voltage 100VAC to 600VAC 50/60Hz

Diode Test Test current: 0.3mA typical;

Open circuit voltage: 1.5VDC typical

Continuity Threshold <120Ω  Test current <1mA

MA150-EN-V2.1-3/12

Support lines: U.S. 877-439-8324, Intl. 603-324-7800

Technical support: Option 3; E-mail: [email protected]

Repair & Returns: Option 4; E-mail: [email protected]

Product specifications subject to change without notice

Visit our website: www.extech.com

Extech Instruments Corporation, 9 Townsend West, Nashua, NH 03063

ISO 9001 Certified since 1995

Maintenance

Battery Replacement

1) When the low battery symbol appears on the LCD the batteries must be replaced.

2) Power down and remove the rear battery compartment Phillips screw.

3) Lift off the battery compartment cover and replace the two 1.5V AAA cells.

4) Replace compartment cover and secure the screw.

You, as the end user, are legally bound (EU Battery ordinance) to return all used

batteries, 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

Cleaning

Caution: Use only a dry cloth to clean the plastic case.

Warranty

EXTECH INSTRUMENTS CORPORATION (a FLIR company) warrants this instrument to be free of defects in parts and workmanship for

one year from date of shipment (a six month limited warranty applies to 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 for authorization. Visit our website

www.extech.com for contact information. 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.

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell. Extech also provides NIST certification for most products. Call the

Customer Service Department for information on calibration services available for this product. Extech recommends that annual calibrations

be performed to verify meter performance and accuracy.

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