Major tech MT876 Bedienungsanleitung

MT876

600V AC/DC TRMS

MULTIMETER

INSTRUCTION MANUAL

Contents Page no

1. Introduction

• The meter measures AC/DC Voltage and Current, Resistance,

Diode Test, Continuity, Capacitance, Frequency, Duty Cycle and

Temperature.

• The meter also tests 1.5V and 9V batteries and offers a Non-

Contact AC Voltage detector.

• In addition, the meter detect Live/Neutral wire through a single test

lead by contact.

• Proper use and care of this meter will provide many years of

reliable service.

2. Safety

2.1. WARNINGS

• Read, understand and follow Safety Rules and Operating

Instructions in this manual before using this meter.

• The meter’s safety features may not protect the user if not used in

accordance with the manufacturer’s instructions.

• Keep fingers away from the metal probe tips when taking

measurements.

• Before changing functions using the selector switch, always

disconnect the test leads from the circuit under test.

• Comply with all applicable safety codes, Use approved personal

protective equipment when working near live electrical circuits -

particularly with regard to arc-flash potential.

• Use caution on live circuits, Voltages above 30V AC RMS, 42V AC

peak or 60V DC pose a shock hazard.

• Do not use if the meter or test leads appear damaged.

• Verify operation before using meter by measuring a known live

voltage.

• Do not use the meter in wet or damp environments or during

electrical storms.

• Do not use the meter near explosive vapors, dust or gasses.

• Do not use the meter if it operates incorrectly, protection may be

compromised.

• Do not operate meter while Low Battery warning is on, replace

batteries immediately.

• Do not apply voltage or current that exceeds the meter’s

maximum rated input limits.

2.3. International Safety Symbols

This symbol adjacent to another symbol, terminal or operating

device indicates that the operator must refer to an explanation in

the Operating Instructions to avoid personal injury or damage to

the meter.

This symbol adjacent to one or more terminals identifies them as

being associated with ranges that may, in normal use, be

subjected to particularly hazardous voltages. For maximum

safety, the meter and its test leads should not be handled when

these terminals are energized.

Double insulation

This symbol advises the user that the terminal(s) so marked must

not be connected to a circuit point at which the voltage exceeds

600 VAC or VDC

This WARNING symbol indicates a potentially hazardous

situation, which if not avoided, could result in death or serious

injury.

This CAUTION symbol indicates a potentially hazardous

situation, which if not avoided, may result in damage to the

product.

2.1. Input Limits

Function Maximum Input

Voltage AC or DC 600V AC/DC

Frequency, Resistance,

Capacitance, 250V AC/DC

Continuity, Diode Test,

Temperature

10A Current AC or DC 10A/600V (6.3x32mm) fast acting Fuse

uA/mA Current AC or DC 500mA/600V (6.3x32mm) fast acting

Fuse

Battery Test 20V AC/DC

CAUTION: When the voltage is more than 600V, the current of uA is more

than 4000uA, the current of mA is more than 400mA, and the current of 10A

is more than 10A, the Buzzer will sound an alarm.

MAX

600V

2.4. Safety Category Ratings

Category Rating Brief Description Typical Applications

Single phase

receptacles and

connected loads

Three phase circuits

and single phase

lighting circuits in

commercial buildings

CAT II

CAT III

• Household appliances, power

tools

• Outlets more than 30ft (10m)

from a Cat III source

• Outlets more than 60ft (20m)

from a Cat IV source

• Equipment in ﬁxed installations

such as 3-phase motors, switch

gear and distribution panels

• Lighting circuits in commercial

buildings

• Feeder lines in industrial plants

• Any device or branch circuit that

is close to a Cat III source

• The measurement category (CAT) rating and voltage rating is determined by a

combination of the meter, test probes and any accessories connected to the

meter and test probes.

• The combination rating is the LOWEST of any individual component.

2.5. Test Leads

CAT IV 600V

CAT III 1000V

Insulated Tip On

Insulated Tip Removed

WARNING: Operation is limited to CAT II applications when the insulated tips

are removed from one or both test probes. Refer to Input Limits section in this

manual for maximum voltage ratings.

3.1. Meter Description

1 - LCD Display

2 - Non-Contact Voltage Indicator

3 - MODE/RELATIVE Button

4 - RANGE Button

5 - MAX/MIN Button

6 - HOLD/Backlight Button

7 - Function Switch

8 - 10A Input Jack

9 - COM Input Jack

10 - Positive Input Jack

11 - Non-Contact Voltage

Detector

12 - Lanyard Hole

13 - Test Lead Holders

14 - Battery Cover Lock

15 - Tilt Stand

16 - Battery Cover

3. Description

1 - Auto Power Off

2 - Auto Ranging

3 - Maximum

4 - Minimum

5 - Display Hold

6 - Diode Test

7 - Continuity

8 - Relative Mode

9 - Non-Contact AC Voltage Detection

10 - Live/Neutral Wire Measurement Function

11 - Degree Celsius/Degree Fahrenheit

12 - Units of Measure List

13 - Measurement Reading

14 - Low Battery

15 - Battery Test

16 - Minus Sign

17 - Direct Current

18 - Alternating Current

3.2. Symbols Used on LCD Display

4. Button Function

4.1. MODE and REL Button

• Press the MODE Button to select AC/DC Voltage, AC/DC Current,

Frequency, Duty Cycle, Ohms, Diode Test, Continuity or Capacitance,

Temperature, NCV and Live.

• Press the REL Button for >2 second to turn on or off the Relative function.

• The Relative function zeros out the reading on the display and stores it as

a reference, subsequent readings will be displayed as the relative

difference between the actual measurement and the stored reference

value.

Note: REL does not work on Frequency, Diode Test, Continuity, NCV, Live.

4.2. RANGE Button

• When the meter is first turned on, it automatically goes into Auto Ranging.

• This automatically selects the best range for the measurements being

made and is generally the best mode for most measurements.

• For measurement situations requiring that a range be manually selected,

perform the following:

1. Press the RANGE Button, the “AUTO” display indicator will turn off.

2. Press the RANGE Button to step through the available ranges until you

select the range you want.

3. Press and hold the RANGE Button for 2 seconds to exit the Manual

Ranging mode and return to Auto Ranging.

4.3. MAX/MIN Button

1. Press the MAX/MIN Button to activate the MAX/MIN mode, the “MAX”

indicator will appear on the LCD display, the meter will display and hold the

maximum reading and will update when a higher “max” occurs.

2. Press the MAX/MIN Button again to view the lowest reading, the “MIN”

indicator meter will appear on the LCD display, the meter will display and

hold the minimum reading and will update when a lower “min” occurs.

3. Press and hold the MAX/MIN Button to end MAX/MIN and return to normal

operation.

Note: The meter does not auto range when the MAX/MIN mode is active, the

display will read OL if the range is exceeded. When this occurs, exit

MAX/MIN and use the RANGE button to select a high range. MAX/MIN does

not work on Frequency, Duty Cycle, Diode Test, Continuity and Capacitance.

4.4. HOLD/Backlight Button

• Press the HOLD/Backlight Button to turn on or off the HOLD

function.

• Press the HOLD/Backlight Button for >2 second to turn on or off

the Backlight function.

4.5. Auto Power Off

• The auto off feature will turn the meter off after 15 minutes.

• To disable the auto power off feature, hold down the MODE Button

and turn the meter on.

4.6. Low Battery Indication

• The “ ” icon will appear in the lower left corner of the display

when the battery voltage becomes low.

• Replace the battery when this appears.

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