MESTEK M101050205 Smart Digital Multimeter User Manual

MESTEK M101050205 Smart Digital Multimeter

OVERVIEW

This instrument is smart digital multimeter with 10000 counting, multi-dis- play and super big screen. It features easy operation, high precision, clear reading, overload protection and accurate measurement, high resolution and good portability It has the functions of automatic range, data hold, temperature measure ment, automatic shutdown, backlight, flashlight, full- range overload protection and battery under-voltage indication.Whether used by professionals, factories, schools, enthusiasts or families, it is an ideal multi-functional instrument. It can be used for measurement of AC/DC voltage, AC/DC, resistance, capacitance, diode, continuity.and temperature,live wire identification and NCV test.

SAFETY INFORMATION

ATTENTION
Please read the manual carefully before use to prevent the possible electric shock or damage to the instrument.

1. When using the instrument, the user must abide by the standard safety rules:
2. After receiving the instrument, please check whether it is damaged during transportation and whether the probe is in good condition.
3. When using, check whether the instrument housing is damaged, whether the insulation layer of the probe is complete and whether the functional range is correct.
4. It is forbidden to measure beyond the indicated value of the protection range, and to switch gears during measurement.
5. When the instrument is connected to the measuring circuit, the finger must be placed behind the probe sheath protection device, and it is forbidden to touch the top (metal part) of the probe.
6. If the measured voltage is higher than 60V DC or 30V AC (effective value), care should be taken, and the highest voltage measured at the COM port and the INPUT port should not exceed AC/DC 600V.
7. Before changing the measuring function, the probe should be removed from the circuit under test.

MARKS

Maintenance

1. Non-professional maintenance personnel are forbidden to open the bottom shell to adjust or repair the instrument.
2. Instrument should be stored far away from high temperature, humidity, corrosive gases or objects.
3. If the instrument is stained with dirt or dust, please clean it with a soft cloth.
4. In order to avoid electric shock caused by incorrect reading, when the instrument displays the symbol , the battery should be replaced immediately.
5. After the instrument is used, turn off the power supply.
6. If the instrument is stored for a long time, the battery should be taken out to prevent leakage and corrosion.
7. The cycle of the instrument should be one yea, and it is calibrated again under the conditions of 18°C 28 °C and relative humidity less than 75%.

SPECIFICATION

• Automatic range: Yes
• Smart identification: Yes
• Full-range overload protection voltage: 250V
• The maximum input voltage at COM port and: INPUT
• port: AC/DC voltage gear 600V
• Operation altitude: Max. 2000m
• Display: LCD
• Maximal display value: 9999
• Overrange display: OL or-OL
• Sampling time: About 3 times/second
• Automatic shutdown: About 5 minutes
• Backlight: Auto turn off in about 2 minutes (only for normal screen)
• Power supply: 2×1.5V AAA battery
• Low battery: LCD display symbol
• Working temperature: 0°C~40°C
• Storage temperature: -10°C 50°C
• Dimension: 156x78x20Omm
• Weight (excluding battery): 160g( batteries not included)

THE PANEL SCHEMATIC

1. NCV detection area
2. LED display
3. SEL function conversion
4. Power
5. mA input po
6. Hold Reading retention
7. Backlight/Flashlight
8. Input port
9. COM port

DESCRIPTION OF DISPLAY SYMBOLS

• MBOL DESCRIPTION
• Description of display symbols

Description of buttons

Description of input port

FUNCTIONS

1. ( ): long press to turn on or off the power. Smart mode is the default when power is on, which can identify AC/DC voltage, capacitance, diode, continuity test.
2. SEL function switch button: short press SEL button to switch to NCV, Live, capacitance, temperature, continuity, diode and long press SEL button to resume Smart mode.
3. HOLD: short press to lock the measured data, short press the HOLD button again to exit the data lock, and long press the HOLD button to Switch ‘C°F.
4. ( )backlight/flashlight: short press( )key to turn on or off the backlight (only for normal screen), long press( )key to turn on or off the flashlight (about two minutes to turn off automatically).
5. Current switch:when the red probe in plugged into the mA input port, the meter automatically switch the current. Press SEL to switch to AC/DC according to the measurement.
6. Automatic shutdown function: If there is no operation for about 5 minutes, the instrument will automatically shut down.
7. Under-voltage indicator of battery:when ( appears on the screen, it means that the battery is low, please replace the battery in time.

OPERATION GUIDE

Smart mode

1. Smart mode is the default when power is on. It can measure AC/DC voltage, resistance, diode and continuity test.
2. Plug the black probe into the COM port, and the red probe into the

INPUT port,
Connect the red and black probe to the circuit under test.
When the measuring gear is at the NCV, Live, capacitance, temperature, continuity, or diode, long press SEL to resume Smart mode.
NCV detection
Short press the SEL button to switch to NCV non-contact AC voltage detection. Close the the meter to the conductor,and the meter judges the measured voltage according to the intensity of the detected voltage signal.

When the AC voltage is detected, L,M and H are displayed respectively on the screen simulation bar for the low ,middle and high voltage, the buzzer gives out warnings with different frequencies.
Notes:
Even if there is no indication, the voltage may still exist. Don’t rely on non-contact voltage detection to determine whether there is voltage in the wire. The detection process may be affected by factors such as socket design, different insulation thickness and types. xternal interference sources (such as flashlights, motors, electro magnetism, etc.) may mistakenly trigger non- contact voltage detection.

Live wire identification
Short press the SEL button to switch to Live wire identification. Plug the red probe into the INPUT port, when closing the the meter to the conduc- tor, L,M and H are displayed on the screen simulation bar respectively for the low ,middle and high voltage, the buzzer gives out alarm,the tested circuit is live wire, or it’s the zero wire or earth wire.
Notes:

1. Before use, please test on the known electric conductor to make sure the meter is in good condition.
2. When using Live wire identification, please plug the red probe into the INPUT port and unplug the black probe against electric shock.

6.4 Capacitance
Short press the SEL button to switch to the ( uF ) gear. Plug the black probe into the COM port, and the red probe into the
INPUT port.
Connect the red and black probe to the measured capacitance.
Notes:
OWhen measuring the capacitance, it is necessary to discharge the capacitance first, and the instrument will charge the capacitance during the measurement, and it will take some time for the stable measurement.
Temperature
Short press the SEL button to switch to the ( °C/°F ) gear, plug the red port of the K thermocouple into the INPUT port and the black port into the COM port, and the thermocouple probe contacts the object to be measured.

Continuity test

1. Short press SEL button to select ( )continuity gear.

2. Plug the black probe into the COM port, and the red probe into the
   INPUT port,

3. Connect the red and black probe to the circuit under test.
   Notes:
   When the resistance value of the tested circuit is less than about 302, the buzzer makes continuous sounds.

diode

1. Short press SEL button to select the ( ) gear.

2. Plug the black probe into the COM port, and the red probe into the
   INPUT port,

3. Connect the red and black probe to the diode under test.
   Notes:
   When measuring a normal diode, the meter displays the forward voltage drop of the diode under test.

ACIDC

1. Plug the red probe into the mA input port, the meter automatically switches the current gear.
2. Short press SEL button to switch AC/DC according to the test require- ments.
3. Connect the red and black probe into the tested circuit.

NOTES

1. The maximum measured AC/DC is 600mA.
2. When the red probe is plugged into the mA input port, please check whether the fuse is broken if the current gear is not switched.

TECHNICAL INDICATORS

DC VOLTAGE

Input impedance: 1MQ; The maximum input voltage: 600V

AC VOLTAGE

Input impedance: 1MO; The maximum input voltage: 600V Frequency response: 40Hz-400Hz

RESISTANCE

Overload protection: 250V lopen circuit voltage: 1.2V

DIODE

Overload protection: 250V

CONTINUITY TEST

Overload protection: 250V

CAPACITY

Overload protection: 250V

DC

Maximum input current: 600mA

AC

Maximum input current: 600mA; frequency range: 40Hz~400Hz

TEMPERATURE

Overload protection: 250V

BATTERY REPLACEMENT

In order to avoid electric shock or personal injury caused by wrong readings, when the instrument display appears” “| replace the battery immediately. Before opening the battery cover and replacing the new battery, shut the meter down and check that the probe has been disconnected from the measured circuit.

1. Turn off the power supply,
2. Pull the probe out of the tested circuit.
3. Unscrew the screws fixing the battery cover with a screwdriver.
4. Remove the battery cover.
5. Remove the old battery.
6. Replace with new 2x 1.5V AAA batteries.
7. Install the battery cover and tighten the screws.

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