VEVOR PM8225C User manual

Technical Support and E-Warranty Certificate www.vevor.com/support
MULTIMETER
We continue to be committed to provide you tools with competitive price.
"Save Half", "Half Price" or any other similar expressions used by us only represents an
estimate of savings you might benefit from buying certain tools with us compared to the major
top brands and doses not necessarily mean to cover all categories of tools offered by us. You
are kindly reminded to verify carefully when you are placing an order with us if you are
actually saving half in comparison with the top major brands.

1
PM8225C
Have product questions? Need technical support? Please feel free to
contact us:
[e-mail]
NEED HELP? CONTACT US!
This is the original instruction, please read all manual instructions
carefully before operating. VEVOR reserves a clear interpretation of our
user manual. The appearance of the product shall be subject to the
product you received. Please forgive us that we won't inform you again if
there are any technology or software updates on our product.
MULTIMETER

2
Please read the instructions carefully before use.
Catalogue
Statement .............................................................................................................. 3
Summary ............................................................................................................... 3
Safety instructions ................................................................................................. 3
Safety symbol ........................................................................................................ 4
Safe operation specifications ................................................................................ 4
Instrument instructions .......................................................................................... 6
LCD symbol instructions ........................................................................................ 8
Measurement instructions ..................................................................................... 9
AC voltage measurement ...................................................................................... 9
DC voltage measurement .................................................................................... 10
mV gear voltage measurement ........................................................................... 10
Resistance/connectivity/diode/capacitance measurement .................................. 11
Non-contact electricity verification (NCV) / Live wire detection (Live) ................. 12
Frequency / Duty ratio ......................................................................................... 13
uA current ............................................................................................................ 14
mA current ........................................................................................................... 14
A current .............................................................................................................. 15
General technical index ....................................................................................... 15
Accuracy index .................................................................................................... 16
Instrument maintenance ...................................................................................... 19
General maintenance .......................................................................................... 20
Replacement of the battery and fuse tube............................................................ 20

3
Statement
According to the Universal Copyright Convention, without permission and written
consent, no content of this manual may be reproduced in any form (including
storage and retrieval or translation into the languages of other countries or
regions). This manual is subject to change in future versions without extra notice.
Caution
The "caution" sign indicates the condition and operation that will cause
damage to the instrument or equipment.
It requires that care must be taken when performing this operation. If it is not
performed correctly or this operation step is not followed, the instrument or
equipment may be damaged. Do not continue to perform any operation
indicated by the caution sign unless these conditions are met or fully
understood.
Please read the manual carefully and pay attention to the relevant safety
warning information before using the instrument.
Summary
This instrument is a compact hand-held 6000 count digital multimeter with high
performance and high reliability. It is equipped with overload protection circuit,
which can be used to measure AC and DC voltage and current, resistance, diode,
circuit connectivity test, non-contact electricity verification and live wire detection.
AC voltage is also equipped with VFD low-pass filter, Can be used to measure
inverter voltage, filter attenuation-0.94dB@1kHz.
Safety instructions
This instrument is designed and produced in strict accordance with the Safety
Standard IEC61010, and meets the safety standard of Overvoltage Standard 600V
CAT Ⅲand Pollution level 2.
Please use the instrument as this manual, otherwise the protection function
provided by the instrument may be reduced or invalid.

4
Safety symbol
Please refer to the instructions for important safety information
AC high voltage danger
Non-recyclable
The fuse must be replaced according to the designated specification in
the manual.
Safe operation specifications
Warning
To avoid possible electric shock or physical injury, please comply with the following
specifications:
·Before using the instrument, please read the manual carefully and use the
instrument in strict accordance with it, otherwise the protection provided by the
instrument may be reduced or invalid.
·Check the shell before using the instrument. Check whether there is crack or
plastic part defect. Please carefully check the insulator near the input terminal.
If the instrument works abnormally or is damaged, do not use it.
·It is forbidden to touch live conductors whose voltage exceeds 30V RMS AC, 42
V AC peak or 60V DC.
·The instrument should be used according to the specified measurement
category, voltage or current rating.
·When the indication of insufficient battery power is displayed, please replace the
battery in time to prevent measurement errors.
·Please comply with local and national safety specifications. Wear personal
protective equipment(approved rubber gloves, masks, flame retardant clothing,
etc.) to prevent injury caused by electric shock and arc when dangerous live
conductors are exposed.

5
·Do not use the HOLD function to measure unknown voltage. After HOLD is
turned on, the display screen will not change when different voltages are
measured.
·Measure a known voltage to determine whether the instrument operates
normally.
·When measuring, the correct function and range gear must be used.
·Do not use the instrument around explosive gas and steam or in humid
environment.
·Do not use damaged probes. Check whether the insulation of the probe is
damaged, whether there is exposed metal or signs of wear. Check the continuity
of the probes.
·When measuring, please connect the neutral wire or ground wire first, and then
the live wire; when disconnecting, please cut off the live wire first, and then
disconnect the neutral wire and ground wire.
·When measuring, please hold your fingers behind the probe finger protector.
·Please disconnect the probe from the measured object before opening the back
cover of the instrument.
·Do not use the instrument in an environment that exceeds the measurement
category (CAT) rating of the lowest rated single element in the instrument, probe
or accessories.

6
Instrument instructions
①.LCD display：
It is with 4 digit 7-segment nixie tube display, 6000 counts, and analog bar
indication function.
②. Key area：
Function selection key：
Briefly press the key to switch gear function, and long press the key for about 2
seconds to turn on or turn off VFD low-pass filter.
Attention: VFD low-pass filter only works at AC voltage gear ( ).
Maximum and minimum value key：

7
Briefly press the key to start the maximum or minimum value measurement, and
long press the key for about 2 seconds to exit the maximum or minimum value
measurement.
Relative value measurement/ Lighting key：
Briefly press the key to turn on or turn off the relative value measurement, and long
press the key for about 2 seconds to turn on or turn off the light.
Data retention / LCD backlight key：
Briefly press the key to turn on or turn off the data retention display, and long press
the key for about 2 seconds to turn on or turn off the LCD backlight.
③. Inputjack area：
jack：
The positive input terminal of 10A current measurement (connected with the red
probe).
jack：
Common input terminal for voltage, resistance, diode, capacitance, connectivity
and current measurement (connected with the black probe).
jack：
Positive input terminal for voltage, resistance, diode, capacitance, connectivity, live
wire detection, current measurement within 600mA (connected with the red
probe).
④. NCV sensing area
It is used for non-contact voltage verification.
⑤. Function rotary switch:
It is used to select the measurement function.

8
LCD symbol instructions
Automatic shutdown indicator Capacitance unit
Diode measurement indicator Current unit
Connectivity measurement
indicator
Voltage unit
AC indicator Data display area
Data minus indicator Display retention key
DC indicator Analog bar indication
VFD low pass filter indicator Battery low voltage indicator
Relative measurement
indicator
Contact live wire electricity
verification indicator
Positive duty ratio percentage
indicator
Non-contact electricity
verification indicator
Frequency gear Minimum value indicator
Invalid symbol Maximum value indicator
Resistance unit AC high voltage indication

9
Measurement instructions
Precautions before operation:
1. Turn on the power and check whether the battery is under voltage. If " "
is displayed on the screen, you need to replace the battery before operation. If not,
please follow the steps below.
2. The " " warning symbol next to the jack of the measurement probe
indicates that the input voltage or current should not exceed the indicated value,
which is to protect the internal circuit of the instrument from damage.
3. The instrument has the function of automatic shutdown, that is, the display
shows " " and it will shut down automatically about 10 minutes after no
operation. Cancel the automatic shutdown function: press and hold the " "
key to start the machine, after hearing the beep sound for about 5 times, release
the key,
and the " " is not displayed on the display screen, which can prevent the
instrument from entering the sleep state during the measurement process.
4. The backlight function turns off automatically after about 15 seconds.
5. The lighting function will turn off automatically about 15 seconds after it is turned
on.
AC voltage measurement
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position, and connect the probe to the power
supply or load to be measured, and the measured value will be displayed on the
screen.

10
3. Press " " key to switch frequency and duty ratio, and long press it to
turn on or turn off VFD function.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Pay special attention to avoid electric shock when measuring high
voltage.
DC voltage measurement
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position, and connect the probe to the power
supply or load to be measured. The polarity and measured value of the contact
terminal of the red probe will be displayed on the screen.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Pay special attention to avoid electric shock when measuring high
voltage.
mV gear voltage measurement

11
1. Insert the red probe into the " " jack and the black probe
into the jack.
2. Turn the knob switch to the " " position, and connect the probe to the
power supply or load to be measured. The polarity and measured value of the
contact terminal of the red probe will be displayed on the screen.
3. Press the key to switch DC voltage, AC voltage and frequency
measurement.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Pay special attention to avoid electric shock when measuring high
voltage.
Resistance/connectivity/diode/capacitance measurement
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position and press the key to
switch the measurement of resistance, connectivity, diode and capacitance.
3. Connect the probe to the measured object and read the measurementresult
from the display.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.

12
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. When measuring large capacitance, discharge the capacitance before
measuring.
Non-contact electricity verification (NCV) / Live wire
detection (Live)
1. Turn the knob switch to the " " position and press the key to
switch NCV or Live function.
2. Under the NCV function, place the NCV sensing area close to the wire to be
measured. When the AC voltage is detected, the buzzer will make an intermittent
sound, which varies with the intensity of the induced voltage. Meanwhile, the
number of " " is displayed on the display screen. The more the number, the
stronger the induced signal.
3. Under the Live function, insert the red probe into the " " jack, and
the black probe is not connected. Connect the red probe to the cable to be
measured. When the detected electric AC voltage is greater than about 36V, the
buzzer will emit intermittent sound, which varies with the intensity of the induced
voltage. Meanwhile, the number of " " is displayed on the display screen.
The more the number, the stronger the induced signal.
Note: NCV mode can also connect the probe in Live mode to judge the live
wire, but the sensitivity will be higher than that in Live mode.

13
NCV Live
Warning：
1. Measurement range: about 36V~600V, 50Hz or 60Hz.
2. When using, even if there is no sound or display prompt, the wire to be
measured may still have voltage. The instrument may be affected by other
factors (such as shielded wires and cables, thickness of insulation layer,
distance from voltage source, diversity in socket design, etc.), and fail to
sense the electric field.
3. When judging the live wire, do not put your fingers or conductors into the
COM jack, otherwise there may be a risk of electric shock.
Frequency / Duty ratio
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position and press the key to
switch the frequency or duty ratio.
3. Connect the measurement probe to the load or the measured terminal and read
the value from the display screen.

14
Warning：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. Do not input a voltage with an effective value higher than 0V, otherwise
there is a risk of damaging the instrument.
uA current
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position and press the key to
switch the AC current, DC current or frequency measurement.
3. Connect the measurement probe in series to the load, and the polarity of the red
probe connection will be displayed when the current value is displayed.
Warning：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and a higher gear range should be switched for measurement.
3. Do not input a voltage with an effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Do not input a current with an effective value higher than 600uA,
otherwise there is a risk of damaging the instrument.
mA current
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position and press the key to
switch the AC current, DC current or frequency measurement.

15
3. Connect the measurement probe in series to the load, and the polarity of the red
probe connection will be displayed when the current value is displayed.
Warning：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and a higher gear range should be switched for measurement.
3. Do not input a voltage with an effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Do not input a current with an effective value higher than 600uA,
otherwise there is a risk of damaging the instrument.
A current
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position and press the key to switch
the AC current, DC current or frequency measurement.
3. Connect the measurement probe in series to the load, and the polarity of the red
probe connection will be displayed when the current value is displayed.
Warning：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement shall be terminated.
3. Do not input a voltage with an effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Do not input a current with an effective value higher than 600uA,
otherwise there is a risk of damaging the instrument.
General technical index

16
·Service environmental conditions:
IEC/EN 61010-1 600V CATⅢ，Pollution level 2。
Altitude < 2000m。
Temperature and humidity of working environment:
0~40 ℃(<80% RH, <10 ℃is not considered).
Temperature and humidity of storage environment:
-10~60 ℃(<70% RH, remove the battery).
·Temperature coefficient: 0.1 accuracy / ℃.
·The maximum allowable voltage between the measuring terminal and the
ground: 600V DC or AC RMS.
·Sampling rate: about 3 times / second
·Automatic shutdown: about 10 minutes.
·6000 Display: the maximum displayed value is 6000
·Range exceeding indication: "OL" is displayed.
·Battery low voltage indication: when the battery voltage is lower than the normal
working voltage, the " " will be displayed on the LCD.
·Input polarity indication: the "-" symbol is automatically displayed.
·Battery: DC 1.5V AAA ×2。
·Overall dimension:166mm×78mm×64mm
·Weight: about 268g
Accuracy index
Accuracy: ( reading + digit).
Reference conditions: the ambient temperature is 18 ℃to 28 ℃, and the relative
humidity is not greater than 80%.
AC voltage
Range Resolution Accuracy
60mV 10uV
± (0.8% reading +3 digits)
600mV 100uV
6V 1mV
60V 10mV
600V 100mV

17
Maximum allowable measurement voltage: 600V (RMS)
Frequency range: 40Hz~1000Hz
DC voltage
Range Resolution Accuracy
60mV 10uV
± (0.5% reading +3 digits)
600mV 100uV
6V 1mV
60V 10mV
600V 100mV
600V Maximum allowable measurement voltage: 600V
Resistance
Range Resolution Accuracy
600Ω 0.1Ω
±(1.2% reading +5 digits)
6kΩ 1Ω
60kΩ 10Ω
600kΩ 100Ω
6MΩ 1kΩ
60MΩ 10kΩ ±(2.0% reading +5 digits)
Over voltage protection: 600V DC or AC RMS
Diode and connectivity
Range Description Remarks
Diode Display approximate diode
forward voltage value
The circuit voltage is about
more than 2V
Connectivity The conductive resistance is
about less than 30 Ω, and the
buzzer sounds continuously.
The circuit voltage is less than
1V

18
Capacitance
Range Resolution Accuracy
10nF 0.01nF
±(3.0% reading +5 digits)
100nF 0.1nF
1uF 0.001uF
10uF 0.01uF
100uF 0.1uF
1mF 0.001mF ±(4.0% reading +5 digits)
10mF 0.01mF
100mF 0.1mF ±(5.0% reading +5 digits)
Over voltage protection: 600V DC or AC RMS
Frequency
Range Resolution Accuracy
10Hz 0.001Hz
±(1.0% reading +5 digits)
100Hz 0.01Hz
1kHz 0.1Hz
10kHz 1Hz
100kHz 10Hz
1MHz 100Hz
10MHz 1kHz
Minimum input voltage: 200mV (RMS)
Over voltage protection: 600V DC or AC RMS
Duty ratio
Range Resolution Accuracy
1%~99% 0.1% ±(3.0% reading +5 digits)
Minimum input voltage: 200mV (RMS)
Over voltage protection: 600V DC or AC RMS

19
AC current
Range Resolution Accuracy
600uA 0.1uA ±(1.0% reading +5 digits)
6mA 1uA ±(1.0% reading +3digits)
60mA 10uA
600mA 100uA ±(1.2% reading +3 digits)
6A 1mA ±(1.5% reading +3 digits)
10A 10mA
Maximum input current of mA jack: 600mA（RMS）
Maximum input current of 10A jack：10A（RMS）
Frequency range: 40Hz~1000Hz
DC current
Range Resolution Accuracy
600uA 0.1uA
±(0.8% reading +3 digits)
6mA 1uA
60mA 10uA
600mA 100uA ±(1.0% reading +3 digits)
6A 1mA ±(1.2% reading +3 digits)
10A 10mA
Maximum input current of mA jack: 600mA
Maximum input current of 10A jack：10A
Instrument maintenance
This section provides basic maintenance information, including instructions for
replacing fuse tubes and batteries. Unless you are an experienced maintenance
technician and have relevant calibration, performance test and maintenance data,
do not try to repair this instrument
Warning：
To prevent possible electric shock, fire or physical injury:
· When the shell is opened, do not use the instrument for any measurement