Extech Instruments MN30 User manual

USER MANUAL
True RMS AutoSensingTM
Multimeter + NCV
Model MN30
Please visit www.extech.com for user manual translations
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
2
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.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
3
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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
4
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.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
5
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.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
6
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.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
7
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.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

MN30-en-GB_V1.0 10/16
8
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
Copyright ©2016 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
www.extech.com
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]