Extech Instruments MN30 Manual de usuario

USER MANUAL

True RMS AutoSensingTM

Multimeter + NCV

Model MN30

Please visit www.extech.com for user manual translations

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Introduction

Thank you for selecting the Model MN30 True RMS

AutoSensingTM Multimeter with Non-contact Voltage Detector

(NCV). The MN30 automatically senses AC Voltage, DC Voltage

or Resistance/Continuity measurement types. This device is

shipped fully tested and calibrated and, with proper use, will

provide years of reliable service. Please visit our website

(www.extech.com) to check for the latest version of this User

Manual, Translations, Product Updates, Product Registration,

and Customer Support.

Features

•Unique smart AutoSensingTM feature

•Non-contact Voltage Detector

•Automatic Power OFF (APO)

•Low battery indicator

•Rugged, battery operated, and portable

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY I

Equipment of OVERVOLT AGE CATEGORY I is equipment for connection to circuits in

which measures are taken to limit the transient over-voltages to an appropriate low

level.

Note – Examples include protected electronic circuits.

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be

supplied from the fixed installation.

Note – Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY III

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.

Note – Examples include switches in the fixed installation and some equipment for

industrial use with permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.

Note – Examples include electricity meters and primary over-current protection

equipment.

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Safety Information

To ensure the safe operation and service of the meter, follow these

instructions closely. Failure to observe warnings can result in severe injury.

WARNINGS

WARNINGS identify hazardous conditions that could cause BODILY HARM

or DEATH.

•Keep hands and fingers behind the finger guards at all times.

•Remove test leads before opening the meter.

•Use the meter only as specified in this User Manual.

•Use the proper terminals when taking measurements.

•Verify the meter’s operation by measuring a known voltage.

•Do not apply more than the rated voltage between terminals or between any

terminal and earth ground.

•Use caution with voltages above 30 VAC RMS, 42 VAC peak, or 60 VDC. These

voltages pose a shock hazard.

•To avoid electric shock, replace batteries when low battery indicator is displayed.

•Disconnect power to the circuit under test and discharge all capacitors before

testing resistance.

•Do not use the meter in the presence of explosive gas or vapor.

•To reduce risk of fire or electric shock, do not use the meter if it is wet.

•Individual protective equipment should be used if HAZARDOUS LIVE parts in the

installation where measurements are to be carried out could be accessible.

CAUTIONS

CAUTIONS identify conditions and actions that could cause DAMAGE to

the meter or equipment under test.

•Do not expose the meter to extremes in temperature or humidity.

Safety Symbols

This symbol, adjacent to another symbol, indicates user

must refer to manual or user guide for further

information.

Risk of electrical shock

Equipment protected by double or reinforced insulation

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Meter Description

1. LCD Display

2. Hold (H) button

3. NCV Non-Contact Voltage button

4. Flashlight button

5. Power button

6. Flashlight

7. NCV LED Lamp

8. Test leads

Note: Test lead holders, battery

compartment are on rear of unit.

Push-Button Descriptions

Power button

Press for at least 3 seconds to power on the meter. Press

again for 3 seconds to power off.

H (HOLD) button

Short press to freeze displayed reading (Hicon is visible).

Press again to release the reading.

NCV (non-contact voltage) button

Press and hold the button and the meter display shows

dashes (---). Continue to hold the button to remain in the

NCV mode. Release the button to exit the NCV mode.

Flashlight button

Short press to power the flashlight. Press again to power off.

This feature allows for testing in dark areas.

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Operating Instructions

WARNING: Risk of electrocution. High-voltage circuits are very

dangerous and should be measured with care.

Meter Power

Press and hold the power button for approximately 3 seconds

to power on the meter. The LCD will display ‘ALL’.

Auto Power OFF (APO)

APO turns the meter off after 15 minutes of inactivity.

Flashlight

The MN30 has an flashlight to make working in dark areas

easier. Press the button to power ON the flashlight. Press

again to power OFF the flashlight.

Data Hold

The Data Hold function freezes the reading in the display.

Press the H button to switch Data Hold ON/OFF. When the

Data Hold mode is active the display will show the Hicon.

AC/DC Voltage Measurements

CAUTION: Do not measure voltages higher than 600V.

Damage may occur to the meter.

1. Press the power button for 3 seconds to power the meter.

2. For DC, touch the black test lead to the negative side of the

circuit under test and touch the red test lead to the positive

side. For AC, the test lead polarity is not a factor.

3. If the voltage is > 1V the meter will measure and display

voltage. If the measured voltage is < 1V the meter will

automatically change to the resistance function.

4. For DC only, if the test leads are reversed, a minus sign will

be displayed.

5. If the voltage is overrange, OL will display.

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Resistance Measurements

WARNING: To avoid electric shock, disconnect power to the unit

under test and discharge all capacitors before taking resistance

measurements.

1. Press the power button for 3 seconds to power the meter.

2. Touch the test probe tips across the circuit. Disconnect one

side of the part under test so the rest of the circuit will not

interfere with the resistance reading.

3. Read the measured resistance on the display.

4. When the resistance value is overrange, ‘ALL’ will be

indicated on the display.

5. If voltage is detected (> 1V) the meter will switch to the

voltage mode.

Continuity Measurements

WARNING: To avoid electric shock, never measure

continuity on circuits or wires that have voltage on them.

1. Press the power button for 3 seconds to power the meter.

2. Touch the probes to the circuit or component to be tested.

3. The buzzer will sound if the resistance is < 30Ω. If the circuit

is open, the display will indicate “ALL”. If voltage is

detected (> 1V) the meter will switch to the voltage mode.

Non-Contact Voltage Detector (NCV)

WARNING: To avoid electric shock, always check a known

circuit to determine if the meter is operating properly.

WARNING: Voltage may still be present even with no indicator

light. Do not rely solely on NCV detection to determine if

voltage exists.

1. Press and hold the NCV button. Do not release the button

while testing. To exit this measurement mode, release the

button.

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2. The LCD screen will display ‘---‘ in the NCV mode.

3. Hold the meter top near a source of AC voltage. The test

leads are not necessary in NCV mode.

4. The front LED lamp will flash and the meter will beep when

an AC voltage is sensed.

5. The meter’s voltage detection ability is affected by varying

electrical outlet designs and insulation thicknesses/types.

Always check the NCV function on a known live circuit

before testing.

Maintenance

WARNING: To avoid electrical shock, remove the test leads,

disconnect the meter from any circuit and turn OFF the meter before

opening the case. Do not operate with an open case.

Battery Replacement

1. Turn power off and disconnect the test leads from the

circuit under test and from the meter.

2. Remove the (1) Phillips head screw that secures the

battery compartment on the back of the meter.

3. Open the battery compartment and replace the two (2)

1.5V ‘AAA’ batteries observing correct polarity.

4. Re-assemble the meter before use.

Safety: Please dispose of batteries responsibly; never dispose of batteries

in a fire, batteries may explode or leak. If the meter is not to be used for

60 days or more, remove the battery and store separately.

Never dispose of used batteries or rechargeable batteries in

household waste. As consumers, users are legally required to

take used batteries to appropriate collection sites, the retail

store where the batteries were purchased, or wherever

batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user

is obligated to take end-of-life devices to a designated collection point for

the disposal of electrical and electronic equipment.

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Specifications

Specifications stated for ambient conditions 23oC ±5oC (73.4oF ±9oF);

Relative Humidity < 75%

Function

Range

Resolution

Accuracy

DC Voltage

1 to 600 V

0.01V

±(1.5% of rdg + 3 dgts)

Max input voltage ±600V

AC Voltage

(50-60Hz)

1 to 600 V

0.01V

±(1.8% rdg + 3 dgts)

Max input voltage ±600V

Resistance

1Ωto 200Ω

1Ω

±(2.5% rdg + 4 dgts)

200Ωto 10MΩ

1Ω

±(2% rdg + 3 dgts)

Resistance notes: Open circuit voltage 1V approx.

Overload protection: 600V

Continuity

Beeper sounds when resistance is ≤30Ω. Display

resolution: 1Ω; Overload protection: 600V

General Specifications

Display 3 ¾ digit LCD Display

Auto Power OFF After approx. 15 minutes of inactivity

Battery Status Battery icon displays when battery is low

Battery Type 2 x 1.5V AAA batteries

Operating Temp/Humidity 0°C to 40°C (32°F to 104°F); ≤ 75% RH

Storage Temp/Humidity -10°C to 50°C (14°F to 122°F); ≤ 80% RH

Operating Altitude 2000m (7000’) maximum

Weight 140g (4.9oz.) includes batteries

Dimensions 122.5 x 65 x 34.5mm (4.8 x 2.6 x 1.4”)

Safety EN61010-1: CATIII 600V; Pollution Degree 2

Ingress Protection Rating IP20

Approvals CE and ETL

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