Mercury MTM01 User manual

Item ref: 600.100UK
MTM01
Digital Multimeter
User Manual

600.100UK MTM01 User Manual
Please read this manual thoroughly and
ensure all contents are fully understood
before using the apparatus.
Warning
To avoid possible electric shock or personal injury, and to avoid possible
damage to the tester or to the equipment under test, please adhere to the
following guidelines:
•Before using the tester inspect the case. Do not use the tester if it is
damaged or the case (or part of the case) is removed. Look for cracks
or missing plastic. Pay attention to the insulation around the
connectors.
•Inspect the test leads for damaged insulation or exposed metal.
Check the test leads for continuity.
•Do not apply more than the rated voltage, as marked on the tester,
between the terminals or between any terminal and grounding.
•The rotary switch should be in the right position and no changeover of
range shall be made while measurement is conducted to prevent
damage.
•When the tester is working at an effective voltage over 60V in DC or
30Vrms in AC, special care should be taken as there is danger of
electric shock.
•Use the proper terminals, function, and range for your measurements.
•Do not use or store the tester in an environment of high temperature,
humidity, explosive, flammable, damp or of a strong magnetic field.
The performance of the tester may deteriorate after being exposed to
any of these elements.
•When using the test leads, keep your fingers behind the finger guards.
•Disconnect circuit power and discharge all high-voltage capacitors
before testing resistance, continuity, diodes.F
•Replace the battery as soon as the battery indicator appears.
A low battery may produce false readings that can lead to electric
shock and personal injury.

600.100UK MTM01 User Manual
•Remove the connection between the testing leads and the circuit being
tested and turn the meter power off before opening the meter case.
•The internal circuits of the meter should not be tampered with to avoid
damage to the meter and possible electric shock.
•A soft cloth and mild detergent should be used to clean the surface of
the tester on a regular basis. No abrasive and solvent should be used
to prevent the surface of the tester from corrosion or damage.
•The tester is suitable for indoor use only.
•Turn the tester power off when it is not in use and take out the battery
when not using for a long time. Check the battery regularly; replace the
battery immediately if any signs of leaking appear as battery acid will
damage the tester.
Accessories
•Instruction manual
•Set of test leads (red and black)
•9V PP3 battery
General Specifications
Max display: LCD (1999 count) 67 x 42mm
Polarity: Automatic, indicated minus, assumed plus
Measure method: double integral A/D switch implement
Sampling speed: 2 times per second
Over-load indication: “1”or “OL” is displayed
Operating Environment: 0ºC-40ºC, at <80%RH
Storage Environment: -10ºC-50ºC, at <85%RH
Power: 9Vdc (1 x PP3 battery supplied)
Low battery indication: “”is displayed
Dimensions: 190 x 90 x 33mm
Weight: 227g (including battery)

600.100UK MTM01 User Manual
LCD
Power
Button
Range
switch
hFE/mA
terminal
INPUT
terminal
10A
terminal
COM
terminal
HOLD
Button
Multi-functionadapter

600.100UK MTM01 User Manual
Electrical Symbols
Technical Specifications
Accuracies are guaranteed for 1 year, 23ºC ± 5ºC, less than 80% RH.
DC Voltage
RANGE
RESOLUTION
ACCURACY
200mV
0.1mV
±(0.5% of rdg + 3D)
2V
1mV
20V
10mV
±(0.8% of rdg + 5D)
200V
100mV
600V
1V
±(1.0% of rdg + 5D)
Input Impedance: 10MΩ
Overload Protection: 600V DC or 600V AC rms
Max. Input voltage: 600V DC

600.100UK MTM01 User Manual
AC Voltage
RANGE
RESOLUTION
ACCURACY
200mV
0.1mV
±(1.2% of rdg + 5D)
2V
1mV
±(1.0% of rdg + 5D)
20V
10mV
200V
100mV
600V
1V
±(1.2% of rdg + 5D)
Input Impedance: 10MΩ
Frequency Range: 40Hz ~ 400Hz
Overload Protection: 600V DC or 600V AC rms
Response: Average, calibrated in rms of sine wave
Max. Input voltage: 600V AC rms
Audible Continuity
RANGE
DESCRIPTION
Remark
Built-in buzzer sounds if resistance
is less than 30±20Ω
Open circuit voltage:
about 2.8V
The approximate forward voltage
drop will be displayed
Open circuit voltage:
about 2.8V
Overload Protection: 250V DC/AC rms
DC Current
RANGE
RESOLUTION
ACCURACY
2mA
1uA
±(1.8% of rdg + 2D)
20mA
10uA
200mA
100uA
±(2.0% of rdg + 2D)
10A
10mA
±(2.0% of rdg + 10D)
Voltage Drop: 200mV

600.100UK MTM01 User Manual
AC Current
RANGE
RESOLUTION
ACCURACY
2mA
1uA
±(2.0% of rdg + 3D)
20mA
10uA
200mA
100uA
±(2.0% of rdg + 5D)
10A
10mA
±(2.0 of rdg + 10D)
Voltage Drop: 200mV
Frequency Range: 40Hz ~ 400Hz
Response: Average, calibrated in rms of sine wave
Resistance
RANGE
RESOLUTION
ACCURACY
200Ω
0.1Ω
±(1.0% of rdg + 10D)
2KΩ
1Ω
±(1.0% of rdg + 4D)
20kΩ
10Ω
200kΩ
100Ω
2MΩ
1kΩ
20MΩ
10kΩ
±(1.0% of rdg + 10D)
200MΩ
100kΩ
Open Circuit Voltage: about 0.5V (200MΩrange is 3V)
Capacitance
RANGE
RESOLUTION
ACCURACY
20nF
10pF
±(4.0% of rdg + 5D)
200nF
100pF
2uF
1nF
20uF
10nF
200uF
100nF

600.100UK MTM01 User Manual
Operation Instructions
Voltage Measurement
1. Connect red test lead to “INPUT” and black lead to “COM”.
2. Set RANGE switch to desired VOLTAGE position, if the voltage to be
measured is not known beforehand, set switch to the highest range
and reduce it until satisfactory reading is obtained.
3. Connect test leads to device or circuit being measured.
4. Turn on power of the device or circuit being measured voltage value
will appear on Digital Display along with the voltage polarity.
Please note:
•In small ranges, the meter may display an unstable reading when the
test leads have not been connected to the load to be measured. It is
normal and will not affect the measurements.
•When the meter shows the over range symbol “1” or “OL”, a higher
range must be selected.
•To avoid damage to the meter, don’t measure a voltage which exceeds
1000Vdc (for DC voltage measurement) or 750Vac (for AC voltage
measurement).
Current Measurement
1. For reading less than 200mA connect red lead to “mA” and black lead
to “COM” (for measurements between 200mA and 10A, connect red
lead to “10A”) ensure jacks are fully depressed.
2. Set the range switch to desired AC or DC position. If the current
magnitude to be measured is not known beforehand, set the ranges
switch to the highest range position and then reduce it range by range
until satisfactory resolution is obtained.
3. Open the circuit to be measured and connect test leads in SERIES with
the load in with current is to measure.
4. Current reading will be displayed on LCD, for DC current measurement,
the polarity of the red probe will also be indicated.

600.100UK MTM01 User Manual
Please note:
•When the display shows the over range symbol “1”or “OL”, a higher
range must be selected.
•In addition “10A” function is designed for intermittent use only.
Resistance Measurement
1. Connect red lead to “INPUT”, black lead to “COM”.
2. Set the range switch to desired Ω range.
3. If the resistance being measured is connected to a circuit, turn off
power and discharge all capacitors before measurement.
4. Connect test leads to circuit being measured.
5. Read resistance value on Digital Display.
Please note:
•For resistance measurements >1MΩ, the meter may take a few
seconds to stabilize reading. This is normal for high-resistance
measurement.
•When the input is not connected, i.e. at open circuit, the symbol
“OL” will be displayed as an over range indicator.
•Before measuring in-circuit resistance, be sure that the circuit under
test has all power removed and all capacitors are fully discharged.
Capacity Measurement
1. Connect the BLACK test lead to “COM”and the RED test lead to
“INPUT”.
2. Set the Range switch at F position. (NOTE: The polarity of the RED lead
is positive “+”)
3. Connect test leads across the capacitor under measure and be sure the
polarity of connection is observed.
Please Note:
•To avoid damage to the Meter, disconnect circuit power and
discharge all high-voltage capacitors before measuring
capacitance.

600.100UK MTM01 User Manual
•The tested capacitor should be discharged before the testing
procedure. Never apply voltage to the input, or serious damage
may result.
Continuity Measurement
1. Connect the BLACK test lead to “COM” and the RED test lead to
“INPUT” (Note: The polarity of the red test lead is positive “+”).
2. Set the range switch to range.
3. Connect the test leads across the load to be measured.
4. If the circuit resistance is lower than about 30±20Ω, the built-in
buzzer will sound.
Diode Measurement
1. Connect red lead to “INPUT”, black lead to “COM”.
2. Set RANGE switch to “ ” position.
3. Connect the red test lead to the anode of the diode to be measured
and black test lead to cathode.
4. The meter will show the approximate forward voltage
of the diode. If the connections are reversed, “OL” will be
shown on the display.
Transistor hFE Measurement
1. Set the range switch to hFE range.
2. Connect the adapter to the “COM” jack and the “hFE” jack. Don’t
reverse the connection.
3. Identify whether the transistor is NPN or PNP type and locate Emitter,
Base and Collector lead. Insert the leads of the transistor to be tested
into the proper holes of the transistor test socket of the adaptor.
4. LCD display will show the approximate hFE value.

600.100UK MTM01 User Manual
Battery and Fuse Replacement
1) Battery and fuse replacement should only be done after the test leads
have been disconnected and power is off.
2) Loosen screws with suitable screwdriver and remove case bottom.
3) The meter is powered by a single 9V PP3 battery. Snap the battery
connector leads to the terminals of the battery and reinsert into the case
top. Dress the battery leads so that they will not be pinched between
the case bottom and case top.
4) The meter is protected by fuse:
A) mA: F0.5A/600V Fast, Breaking capacity is 10KA,
dimensions are 20 x 5mmØ.
B) 10A: F10A/600V Fast, Breaking capacity is 10KA,
dimensions are 20 x 5mmØ.
Replace the case bottom and reinstall the three screws. Never operate the
meter unless the case bottom is fully closed.
EN61010–1:2010
This product is classed as Electrical or Electronic equipment
and should not be disposed with other household or commercial waste
at the end of its useful life. The goods must be disposed
of according to your local council guidelines.
Errors and omissions excepted.
Copyright© 2024 AVSL Group Ltd, Unit 2 Bridgewater Park,
Taylor Road, Trafford Park, Manchester. M41 7JQ.
AVSL (Europe) Ltd, Unit 3D North Point House,
North Point Bus. Park, New Mallow Road, Cork, Ireland.