Major tech MT1885 User manual

INSTRUCTION MANUAL
1500V DC MULTIMETER
IV
MT1885

2

3
Contents Page no
1. Introduction.....................................................................................4
2. Safety Symbols..................................................................................4
3. Safety Instructions............................................................................5
4. Controls and Jacks.............................................................................6
5. Symbols and Annunciators..................................................................7
6. Operating Instructions.......................................................................7
6.1. DC Voltage Measurements........................................................8
6.2. AC Voltage Measurements........................................................8
6.3. AC /DC Current Measurements..................................................9
6.4. Resistance Measurements.......................................................10
6.5. Continuity Check....................................................................10
6.6. Diode Test.............................................................................11
6.7. Capacitance Measurements....................................................11
6.8. Temperature Measurements....................................................11
6.9. Frequency Measurement........................................................12
6.10. NCV-Contact AC Voltage Test (NCV)..........................................12
6.11. Mode/Bluetooth Button...........................................................12
6.12. Data Hold Button....................................................................13
6.13. Range Button.........................................................................13
6.14. Min/Max Button.....................................................................13
6.15. Low Battery Indication............................................................13
7. Maintenance...................................................................................14
7.1. Battery Installation................................................................14
8. Specifications..................................................................................15
8.1. DC Voltage (Auto-ranging)......................................................15
8.2. AC Voltage (Auto-ranging)......................................................15
8.3. DC Current (Auto-ranging)......................................................15
8.4. AC Current (Auto-ranging)......................................................16
8.5. Resistance Ω (Auto-ranging)...................................................16
8.6. Capacitance (Auto-ranging)....................................................16
8.7. Frequency (Electronic) (Auto-ranging)......................................17
8.8. Frequency (Electrical).............................................................17
8.9. Duty Cycle.............................................................................17
8.10. Temperature.........................................................................17
8.11. Diode Test.............................................................................18
8.12. Audible Continuity..................................................................18
8.13. Non-Contact Voltage (NCV).....................................................19

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1. INTRODUCTION
This meter measures AC/DC Voltage, AC/DC Current, Resistance,
Capacitance, Frequency (electrical & electronic), Duty Cycle, Diode Test,
and Continuity plus Thermocouple Temperature. Proper use and care of
this meter will provide many years of reliable service.
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 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.
This symbol advises the user that the terminal(s) so marked
must not be connected to a circuit point at which the voltage
with respect to earth ground exceeds (in this case)
1000 VAC or VDC.
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.
This symbol indicates that a device is protected throughout
by double insulation or reinforced insulation.
MAX
1000V
2. SAFETY SYMBOLS
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to
circuits in which measures are taken to limit the transient overvoltages 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.

5
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
3. SAFETY INSTRUCTIONS
This meter has been designed for safe use, but must be operated with
caution. The rules listed below must be carefully followed for safe
operation.
1. NEVER apply voltage or current to the meter that exceeds the specified
maximum:
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack
exceeds 1000V above earth.
4. NEVER connect the meter leads across a voltage source while the
function switch is in the current, resistance, or diode mode. Doing so
can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect
the power when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before
opening the covers to replace the fuse or batteries.
7. NEVER operate the meter unless the back cover and the battery and
fuse covers are in place and fastened securely.
If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
Input Protection Limits
Function Maximum Input
V DC or V AC 1500VDC/1000V AC RMS
mA AC/DC 800mA 1000V fast acting fuse
A AC/DC 10A 1000V fast acting fuse (10A for 30 seconds
max every 15 minutes)
Frequency, Resistance,
Capacitance, Duty Cycle, 250VDC/AC RMS
Diode Test, Continuity
Temperature 250VDC/AC RMS

6
4. CONTROLS AND JACKS
1 - 6,000 count LCD display
2 - Hz% button
3 - RANGE button
4 - MODE button
5 - Function switch
6 - mA, μA and 10A input jacks
7 - COM input jack
8 - Positive input jack
9 - Backlight and Hold button
10 - MAX/MIN button
11 - REL button
Note: Tilt stand and battery compartment are on rear of unit.
1
3
2
4
5
6
7
8
9
10
11

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5. SYMBOLS AND ANNUNCIATORS
n
µ
m
A
k
F
M
Ω
Hz
REL
AC
DC
MAX
AUTO
V
HOLD
AUTO
Continuity
Diode test
Battery status
9
nano (10- ) (capacitance)
6
micro (10- ) (amps, cap)
3
milli (10- ) (volts, amps)
Amps
3
kilo (10 ) (ohms)
Farads (capacitance)
6
mega (10 ) (ohms)
Ohms
Hz Hertz (frequency)
Relative
Alternating current
Direct current
Minimum
Maximum
Auto Range Timing symbol
Backlight Bargraph
Volts
Auto ranging
Display hold
Degrees Fahrenheit
Degrees Centigrade
6. OPERATING INSTRUCTIONS
WARNING: Risk of electrocution. High-voltage circuits, both AC and
DC, are very dangerous and should be measured with great care.
1. ALWAYS turn the function switch to the OFF position when the meter is
not in use.
2. If "OL" appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
°F
°C
MIN

87
6.1. DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the "DC" position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert the red test lead
banana plug into the positive V jack.
3. Touch the black test probe tip to the negative
side of the circuit. Touch the red test probe tip
to the positive side of the circuit.
4. Read the voltage on the display.
6.2. AC VOLTAGE MEASUREMENTS
CAUTION: Do not measure AC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to "AC" position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert red test lead
banana plug into the positive V jack.
3. Touch the black test probe tip to the neutral
side of the circuit. Touch the red test probe tip
to the "hot" side of the circuit.
4. Read the voltage on the display

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6.3. AC/DC CURRENT MEASUREMENTS
CAUTION: Do not make 10A current measurements for longer than 30
seconds. Exceeding 30 seconds may cause damage to the
meter and/or the test leads.
1. Insert the black test lead banana plug into
the negative COM jack.
2. For current measurements up to 6000µA
AC/DC, set the function switch to the µA
position and insert the red test lead banana
plug into the µA/mA jack, press mode
button to select AC or DC.
3. For current measurements up to 600mA DC,
set the function switch to the mA position
and insert the red test lead banana plug into
the µA/mA jack, press mode button to
select AC or DC
4. For current measurements up to 10A DC, set
the function switch to the 10A position and
insert the red test lead banana plug into the
10A jack, press mode button to select AC or
DC.
5. Remove power from the circuit under test,
then open up the circuit at the point where
you wish to measure current.
6. Touch the black test probe tip to the
negative side of the circuit. Touch the red
test probe tip to the positive side of the
circuit.
7. Apply power to the circuit.
8. Read the current on the display.

1010
6.5. CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on
circuits or wires that have voltage on them.
1. Set the function switch to the Ω CAP
position.
2. Insert the black lead banana plug into the
negative COM jack. Insert the red test lead
banana plug into the positive Ω jack.
3. Press the MODE button to indicate " " and "Ω"
on the display
4. Touch the test probe tips to the circuit or wire you
wish to check.
5. If the resistance is less than approximately 30Ω,
the audible signal will sound. If the circuit is open,
the display will indicate "OL".
6.4. RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any resistance
measurements. Remove the batteries and unplug the line cords.
1. Set the function switch to the Ω CAP
position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert the red test lead banana
plug into the positive Ω jack.
3. Press the MODE button to indicate "Ω" on the
display.
4. Touch the test probe tips across the circuit or part
under test. It is best to disconnect one side of the
part under test so the rest of the circuit will not
interfere with the resistance reading.
5. Read the resistance on the display.

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6.6. DIODE TEST
1. Set the function switch to the Ω CAP position.
2. Insert the black test lead banana plug into the negative
COM jack and the red test lead banana plug into the
positive V jack.
3. Press the MODE button to indicate " " and "V" on the
display.
4. Touch the test probes to the diode under test. Forward
voltage will typically indicate 0.400 to 0.700V. Reverse
voltage will indicate "OL". Shorted devices will indicate
near 0V and an Open device will indicate "OL" in both
polarities.
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any capacitance
measurements. Remove the batteries and unplug the line cords.
6.7. CAPACITANCE MEASUREMENTS
1. Set the rotary function switch to the Ω CAP
position.
2. Insert the black test lead banana plug into the
negative COM jack.
3. Insert the red test lead banana plug into the positive
V jack.
4. Touch the test leads to the capacitor to be tested.
Read the capacitance value on the display
1. Set the function switch to the "Temp" positive and
press the MODE key to select the "°C" measuring
or "°F" measuring.
2. Insert the Temperature Probe into the input jacks,
making sure to observe the correct polarity.
3. Touch the Temperature Probe head to the part
whose temperature you wish to measure. Keep the
probe touching the part under test until the reading
stabilizes (about 30 seconds).
4. Read the temperature on the display.
Note: The temperature probe is fitted with a type K
mini connector. A mini connector to banana connector
adaptor is supplied for connection to the input banana
jacks.
6.8. TEMPERATURE MEASUREMENTS

1012
6.9. FREQUENCY MEASUREMENT
1. Set the function switch to the Hz/Duty position.
2. Insert the black test lead banana plug into the negative (-) jack (COM)
and the red test lead banana plug into the positive (+) jack (F).
3. Touch the test probe tips to the circuit under test.
4. Read the frequency on the display. The digital reading will indicate the
proper decimal point, symbols (Hz, kHz, MHz) and value.
NOTE: Press the Hz% key to select the frequency or the duty cycle
measuring.
6.10.NCV-CONTACT AC VOLTAGE TEST (NCV)
1. Set the function switch to the ON position.
2. Remove the meter and face the NCV detector to ACV source.
3. If source voltage above 110V, the red backlight will light.
6.11. MODE/BLUETOOTH BUTTON
1. To select DC/AC current or voltage or resistance/capacitance
Diode/Continuity or °C /°F
2. Press the key then turn on the power, the Auto Power-off function will
be cancelled, the sign " " disappears in the LCD; and enters into the
sleep status (power-off), press the key then power on will have Auto
Power-off function.
3. Press and hold MODE button to open the Bluetooth function, until the
Bluetooth symbol appears in the display ,Then you can use our
Meterbox APP installed on your phone to connect with the instrument.
4. Press and hold MODE button to turn off the Bluetooth function.
Note: Bluetooth Connect:
1. Turn on the Bluetooth function on the instrument using Menu Button
2. Turn on the Bluetooth of the Smartphone, press the Meterbox Pro
icon and enter into the home interface. Then press Connect Device
icon on the home interface, Bluetooth device name will appear.
3. Touch the device name listed in Bluetooth devices list to connect the
meter.
Detailed information about Meterbox Pro available on the APP help file.
Meterbox Pro for Android: Please search in Google Play with keyword
Meterbox Pro, download and run.
Meterbox Pro for iOS: Please search in the Apple Store with keyword
Meterbox Pro, download and run.

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6.14. MIN/MAX BUTTON
The meter displays the maximum or minimum value of input in the
Max/Min mode. When Max/Min is pressed for the first time, the meter
displays the maximum value. The meter displays the minimum value
when it is pressed again. When Max/Min is pressed for the third time, the
meter displays current value. The meter returns to normal operation when
Max/Min is pressed and held for longer than one second. Press HOLD key
in Max/Min mode makes the meter stop updating the maximum or the
minimum value.
6.15. LOW BATTERY INDICATION
When the icon appears alone in the display, the battery should be
replaced.
6.13. 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.
6.12. DATA HOLD BUTTON
The Data Hold function allows the meter to "freeze" a measurement for
later reference.
1. Press the DATA HOLD button to "freeze" the reading on the indicator.
The indicator "HOLD" will be appear in the display.
2. Press the DATA HOLD button to return to normal operation.
3. Press the DATA HOLD button to last 2 second, the blue back light
function is enabled or disenabled.

1014
7.1. BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the battery cover.
1. Turn power off and disconnect the test leads from the meter.
2. Open the rear battery cover by removing two screws (B) using a
Phillips head screwdriver.
3. Insert the battery into battery holder, observing the correct polarity.
4. Put the battery cover back in place. Secure with the screws.
WARNING: To avoid electric shock, do not operate the meter until
the battery cover is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and
batteries to make sure that they are still good and that they are
properly inserted.
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the back cover or the battery
or fuse covers.
7. MAINTENANCE
WARNING: To avoid electric shock, do not operate your meter until
the battery and fuse covers are in place and fastened securely.
This Multimeter is designed to provide years of dependable service, if the
following care instructions are performed:
1. KEEP THE METER DRY. If it gets wet, wipe it off.
2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
Temperature extremes can shorten the life of the electronic parts and
distort or melt plastic parts.
3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it can
damage the electronic parts or the case.
4. KEEP THE METER CLEAN. Wipe the case occasionally with a damp
cloth. DO NOT use chemicals, cleaning solvents, or detergents.
5. USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE
AND TYPE. Remove old or weak batteries so they do not leak and
damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF
TIME, the batteries should be removed to prevent damage to the unit.

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Range Resolution Accuracy
600.0uA 0.1uA
±1.0% of reading ± 3digits
6000uA 1uA
60.00mA 10uA
600.0mA 100uA ±1.0% of reading ± 3digits
10A 10mA ±1.0% of reading ± 3digits
8.3. DC CURRENT (AUTO-RANGING)
Overload Protection: 800mA/1000V and 10A/1000V Fuse
Maximum Input: 6000uA DC on uA range
600mA DC on mA range
10A DC on 10A range.
10A: 30 sec max with reduced accuracy
8. SPECIFICATIONS
Range Resolution Accuracy
6.000V 1mV
±0.8% of reading ± 4digits
60.00V 10mV
600.0V 100mV
1000V 1V ±1.2% of reading ± 4 digits
8.2. AC VOLTAGE (AUTO-RANGING)
All AC voltage ranges are specified from 5% of range to 100% of range
AC Voltage bandwidth: 50Hz to1 KHz (Sine); 50/60Hz (All wave)
Input Impedance: 10MΩ.
AC Response: 50Hz to 1KHz
Maximum Input: 1000V DC or 1000V AC RMS.
Range Resolution Accuracy
600.0mV 0.1mV
±0.5% of reading ± 5digits
6.000V 1mV
60.00V 10mV
600.0V 100mVV
1500V 1V ±0.6% of reading ± 6 digits
8.1. DC VOLTAGE (AUTO-RANGING)
Input Impedance: approx. 10MΩ.
Maximum Input: 1500V DC or 1000V AC RMS.
±0.9% of reading ± 9digits

1016
Range Resolution Accuracy
99.9nF 0.01nF ±5.0% of reading ± 20 dgts
999.9nF 0.1nF
±4.0% of reading ± 5 dgts
9.999uF 0.001uF
99.99uF 0.01uF
999.9uF 0.1uF
9.999mF 0.001mF ±10% of reading
99.99mF 0.01mF
8.6. CAPACITANCE (AUTO-RANGING)
Input Protection: 250VDC/AC RMS.
Range Resolution Accuracy
600.0Ω 0.1Ω ±1.5% of reading ± 4 digits
6.000kΩ 1Ω
±1.5% of reading ± 2 digits
60.00kΩ 10Ω
600.0kΩ 100Ω
6.000MΩ 1kΩ ±2.0% of reading ±8digits
60.00MΩ 10kΩ
8.5. RESISTANCE [Ω] (AUTO-RANGING)
Input Protection: 250VDC/AC RMS.
Range Resolution Accuracy
600.0uA 0.1uA
±1.5% of reading ± 3 digits
6000uA 1uA
60.00mA 10uA
600.0mA 100uA
10A 10mA ±2.0% of reading ± 3 digits
8.4. AC CURRENT (AUTO-RANGING)
All AC Current ranges are specified from 5% of range to 100% of range
AC Current bandwidth: 50Hz to 1kHz (Sine); 50/60Hz (AII wave).
Overload Protection: 800mA/1000V and 10A/1000V Fuse.
AC Response: 50 Hz to 1kHz
Maximum Input: 6000uA AC RMS on uA
600mA AC RMS on mA
10A AC RMS on 10A range
10A: 30 sec max with reduced accuracy.

Range Resolution Accuracy
0.1%~99.9% 0.1% ±1.2% of reading ±2 dgts
8.9. DUTY CYCLE
Pulse width: >100us, <100ms;
Frequency width: 5Hz – 150 kHz
Overload protection: 250V DC/AC RMS.
17
Range Resolution Accuracy
10.00~1KHz 0.01Hz ±(1.5% reading)
8.8. FREQUENCY (ELECTRICAL)
Sensitivity: ACV Range (≥ 6% Range), 6000μA/600.0mA Range
(≥ 6%Range), 600.0μA/60.00mA/10.00A (≥ 60% Range).
Range Resolution Accuracy
9.999Hz 0.001Hz
±(1.2% reading ± 4 digits)
99.99 Hz 0.01Hz
999.9 Hz 0.1Hz
9.999KHz 1 Hz
99.99kHz 10Hz
999.9kHz 100Hz
9.999MHz 1kHz
8.7. FREQUENCY (ELECTRONIC) (AUTO-RANGING)
Sensitivity: 0.8V RMS min. at 20% to 80% duty cycle and <100kHz;
5VRMS min at 20% to 80% duty cycle and >100kHz.
Input Protection: 250VDC/AC RMS.
Range Resolution Accuracy
-20.0°C ~+599.9°C 0.1 °C ±3.0% of rdg ± 5°C
600°C ~+1000°C 1°C Meter only, probe accuracy not included
-4.0°F ~+599.9 °F 0.1°F ±3.0% of rdg ± 9°F
600°F ~+1832°F 1°F Meter only, probe accuracy not included
8.10. TEMPERATURE
Sensor: Type K Thermocouple
Overload protection: 250VDC/AC RMS.

Function Range
Enclosure Double molded, waterproof
Shock (Drop Test) 6.5 feet (2 meters)
Diode Test Test current of 0.9mA maximum, open circuit
voltage 3.2V DC typical
Continuity Check Audible signal will sound if the resistance is less
than 50Ω (approx.), test current <0.9mA
Temperature Sensor Requires type K thermocouple
Input Impedance >10MΩ VDC & >10MΩVAC
AC Response True RMS
AC True RMS: The term stands for “Root-Mean-Square," which
represents the method of calculation of the
voltage or current value. Average responding
multimeters are calibrated to read correctly only
on sine waves and they will read inaccurately on
non-sine wave or distorted signals. True RMS
meters read accurately on either type of signal.
ACV Bandwidth 50Hz to 1KHz
Crest Factor ≤3 at full scale up to 500V, decreasing linearly to
≤ 1.5 at 1000V
Display 60,00 count backlit liquid crystal with bargraph
Overrange indication "OL" is displayed
8 2 AUDIBLE CONTINUITY.1 .
Audible threshold: Less than 50Ω Test current MAX. 0.3mA
Overload protection: 250VDC/AC RMS.
Note: Accuracy specifications consist of two elements:
• (% reading)-This is the accuracy of the measurement circuit.
• (+ digits)-This is the accuracy of the analog to digital converter.
Note: Accuracy is stated at 18 to 28°C (65 to 83°F) and less than
75%RH.
1018
Range Resolution Accuracy
0.9mA typical 1 mV ±10% of reading ± 5 digits
8.11. DIODE TEST
Open circuit voltage: MAX. 3.2V DC typical.
Overload protection: 250VDC/AC RMS.

Function Range
Auto Power Off 15 minutes (approximately) with disable feature
Polarity Automatic (no indication for positive); Minus (-)
sign for negative
Measurement Rate 3 times per second, nominal
Low Battery Indication “ “ is displayed if battery voltage drops below
operating voltage
Battery One 9 volt (NEDA 1604) battery
Fuses mA, μA ranges; 0.8A/1000V ceramic fast blow A
range; 10A/1000V ceramic fast blow
Operating Temperature 5ºC to 40ºC (41ºF to 104ºF)
Storage Temperature -20ºC to 60ºC (-4ºF to 140ºF)
Operating Humidity Max 80% up to 31ºC (87ºF) decreasing linearly
to 50% at 40ºC (104ºF)
Storage Humidity <80%
Operating Altitude 2000meters (7000ft.) maximum.
Weight 342g (includes holster).
Size 187 x 81 x 50mm (includes holster)
Safety This meter is intended for origin of installation
use and protected, against the users, by double
nd
insulation per EN61010-1 and IEC61010-1 2
Edition (2001) to Category IV 600V and
Category I111000V; Pollution Degree 2. The
nd
meter also meets UL 61010-1, 2 Edition
nd
(2004), CAN/CSA C22.2 No. 61010-1 2 Edition
ST
(2004), and UL 610108-2-031, 1 Edition
(2003)
8.14. NON-CONTACT VOLTAGE (NCV)
The NCV function works on any rotary switch position.
1. Test the detector on a known live circuit before use.
2. Hold the top of the meter very close to the voltage source as shown.
3. If voltage is present, the back light will flash a bright red.
19

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South Africa Australia