UYIGAO MM-UA9233D User manual
manual
Content
1.
Security Information
……………1
1.1
Preparation
……………1
1.2
Use
……………2
1.3
logo
……………2
1.4
maintenance
……………3
2.
Description
……………3
2.1
Part
……………3
2.2
Description
……………5
2.3
LCD
……………5
3.
Specifications
……………6
3.1
Summary
……………6
3.2
Technical
……………7
4.
Operation
……………12
4.1
Readings
……………12
4.2
Function
……………12
4.3
Backlight
……………12
4.4
Automatic
……………13
4.5
buzzer
……………13
4.6
Preparation
……………13
4.7
AC
……………14
4.8
AC
……………14
4.9
Resistance
……………15
4.10
Diode
……………16
4.11
Beep
4.12
Transistor
……………17
4.13
Capacitance
……………17
4.14
Frequency
……………18
4.15
Temperature
……………19
4.16
Non-contact
……………19
5.
Maintenance
……………20
5.1
Replace
……………20
5.2
Replace
……………20
6.
Attachment
……………20
Produc t
warranty
……………21
The instrument performance is stable, the quality of reliability is 3 1/2 digital
multimeter, using LCD display, clear reading, intuitive display, easy to operate, can
be used to measure the DC voltage, AC voltage sine wave RMS, DC current, AC current sine
wave True RMS, resistance, capacitance, frequency, duty cycle, diode, on-off test. As
well as unit symbol display, data retention, automatic power and other functions. The
machine uses a high-performance MCU processor, with a high cost, the instrument is fully
functional, high accuracy, easy to use, is the laboratory, factories, radio enthusiasts
and the ideal home tools.
1. Security Information
Warning
Use this instrument with special attention, improper use may cause
electric shock or damage to the instrument. In accordance with the usual
safety procedures and full compliance with the safety regulations specified
in the manual.
In order to make full use of the functions of the instrument and to
ensure safe operation, please carefully read and follow the instructions
of this manual.
Instrument in line with GB / T 13978-92 digital multimeter general technical
conditions, in line with GB4793.1-1995 (IEC-61010-1, IEC-61010-2-032) electronic
measuring instruments safety requirements, is a secondary pollution, For CAT IV 600V
and CAT III 1000V.
Follow the safe operating instructions to ensure safe use of the instrument.
Appropriate use and protection, the instrument will give you a satisfactory service.
1.1 Preparation
1.1.1 When using the instrument, the user must comply with the standard safety rules:
- Universal anti-shock protection
- Prevent misuse of instruments
1.1.2 After receiving the instrument, check if it is damaged during transport.
1.1.3 in the rough conditions of preservation, shipment, check and confirm whether the
instrument is damaged. 1
1.1.4 The pen must be in good condition. Before use, check whether the insulation of
the test leads is damaged and the wires of the wires are exposed.
1.1.5 Use the table provided with the table to ensure safety, if necessary, must use
the same or the same level of the pen to replace.
1.2 Use
1.2.1 When using, you must use the correct function and range.
1.2.2 Do not exceed the protection range of each range to measure the value.
1.2.3 Do not touch the top of the test leads (metal parts) when the meter is connected
to the measuring circuit.
1.2.4 In the measurement, if the measured voltage is higher than 60V DC or 30V AC (RMS),
should pay attention to keep the fingers always in the table after the finger care device.
1.2.5 Do not measure the voltage when the voltage between the measuring end and the earth
exceeds AC 600V.
1.2.6 Before turning the change switch to change the measuring function, remove the test
leads from the circuit under test.
1.2.7 Do not live measurement resistance, capacitance, diode and test circuit off.
1.2.8 In the current, resistance, capacitance, diode and line continuity test range,
care should be taken to avoid connecting the meter to the voltage source.
1.2.9 Do not measure the capacitance until the capacitor is fully discharged.
1.2.10 Do not use this instrument near explosive gas, steam or dust.
1.2.11 If you notice any abnormality or malfunction of the instrument, stop using it.
1.2.12 Do not use the instrument unless the instrument case and battery cover are fully
fastened in place.
1.2.13 Do not store or use the instrument in direct sunlight, high temperature, high
humidity.
1.3 Symbol
Note (important safety information, see instruction manual)
Can be used on dangerous live conductors.
Double Insulation Protection (Class II)
2
CAT III In accordance with IEC-61010-1 standard over-voltage (installation) level
III, pollution level 2 refers to the level of pulse withstand voltage
protection provided.
Meet the European Community (EU) standards
Grounded
1.4 Maintenance
1.4.1 Do not attempt to open the bottom case to adjust or repair the instrument. This
operation can only be performed by a technician who is fully aware of the instrument
and the risk of electric shock.
1.4.2 Before opening the instrument case or battery cover, remove the test leads from
the circuit under test.
1.4.3 In order to avoid false alarms that may cause errors, when the meter displays the
" " symbol,Replace the battery immediately.
1.4.4 Use a damp cloth and mild detergent to clean the meter, do not use abrasives or
solvents.
1.4.5 When the instrument is not in use, turn off the power and turn the range switch
to the OFF position.
1.4.6 If the instrument is not used for a long time, remove the battery to prevent damage
to the instrument.
2.Description
- instrument for the portable, professional measuring instruments, with LCD digital
display, and a backlight,
Users are easy to read. The range switch is easy to measure with one hand operation,
with overload protection and low battery indication. Whether professional, factory,
school, enthusiast or family use, are an ideal
Multi-function instrument.
- instrument for AC current, DC current, AC voltage sine wave true RMS, DC voltage,
frequency, duty cycle, resistance, capacitance measurement and line off, diode testing,
temperature measurement. 3
- The instrument has an automatic range function.
- The meter has a reading hold function.
- The instrument has an automatic shutdown function.
2.1 Part Name
⑴illumination
⑵NCV indicator
⑶LCD display
⑷Transistor Tester
⑸function selection button (FUNC)
⑹transfer switch 3
⑺High current input 10A input
⑻resistance, capacity, voltage, frequency, temperature, diode and on-off input jack
⑼common jack
⑽Reading / Reading Illumination button ( )
⑾contact voltage detection zone
4
IEC61010-1
FUSED
MAX 630mA
UNFUSED
MAX 10A
MAX
600V
MAX 30 sec
every 15 min 630mA
600V CAT III
2.2 Switch and button and input jacks
Button: used for reading hold or backlight control.
FUNC Button: Used to measure the function switch. The switch between the diode and
the buzzer is used to switch between the diode and the buzzer; the temperature is used
to switch between degrees Celsius and Fahrenheit; the HZ% is used for frequency and
duty cycle measurement functions. In the AC voltage file can switch to the measurement
frequency and duty cycle state.
OFF position：Used to turn off the power.
Jack: voltage, resistance, frequency, duty cycle, capacitance, diodes, line
off, and temperature input terminals.
COM jack：Voltage, resistance, frequency, duty cycle, capacitors, diodes,
line off and temperature and other common terminals.
Transfer Switch: Used to select functions and ranges.
2.3 LCD Monitor
5
AC、DC
AC, DC
、
Diode, beep off
AUTO
Automatic range mode
NCV
Non - contact AC voltage detection
hFE
Transistor test state
℃℉
Temperature measurement state
BATTERY VOLTAGE IS INSUFFICIENT
H
Read the hold state
Automatic shutdown indicator
%
Percentage (duty cycle)
mV, V
MV, volts (voltage)
A
Ampere (current)
nF,μF，mF
Nafala, microfarads, cents Farah
Ω, kΩ, MΩ
Ohm, kilohm, megohm (resistance)
Hz, kHz，MHZ
Hertz, kilohertz, megahertz (frequency)
3. Specification
The meter shall be designated for one year and recalibrated at 18 ° C to 28 ° C and
a relative humidity of less than 75%.
3.1 Summary
Automatic range and manual range.
Full range overload protection.
The maximum voltage allowed between the measuring end and the ground: 600V DC or AC
600Vrms
fuse protection: uA, mA file 0.2A / 250V self-recovery fuse; 10A file without
insurance tube. 6
Working height: max 2000m
Display: 2000counts LCD display
Maximum display value: 1999 number
Polarity indication: automatic indication, '-' indicates negative polarity.
Overrange display: '0L' or '-0L'.
Sampling time: about 3 times / sec
Unit display: with function, power unit display.
automatic shutdown time: no letter when about 15 minutes
Power supply: DC power supply 9V
Battery Type: 6F22 9V Battery Battery
Battery undervoltage indication: LCD display symbol .
Temperature coefficient: less than 0.1 ×accuracy / ℃
Operating temperature: 18 ℃~ 28 ℃
Storage temperature: -10 ℃~ 50 ℃
Size: 140 (L) × 68 (W) × 49 (H) mm
Weight: about 226g (including battery)
3.2 Technical indicators
Ambient temperature: 23 ±5 ℃Relative humidity: <75%
3.2.1 True rms zero input
3.2.1.1 The measurement of sine wave signal, the use of true RMS measurement method than
the traditional average response method error is small.
3.2.1.2 True RMS The instrument can accurately measure the sine wave signal, but if it
is on the AC function, the instrument may display 1 to 50 if the measured signal is not
input (shorted at the AC voltage range and the input terminal) Word between a reading.
These deviations are normal. Within the specified measuring range, they do not affect
the accuracy of the multimeter to measure alternating current.
3.2.1.3 True RMS requires that the input signal reach a certain level for measurement.
Therefore, the AC voltage and current range is specified between 2% and 100% of full
scale.
7
3.2.2 DC voltage
Range
Resolution
Accuracy
2V
0.001V
（0.5% of reading + 5 words）
20V
0.01V
200V
0.1V
（0.8% of reading + 5 words）
600V
1V
- Input impedance: 10MΩ
- Maximum input voltage: 600V DC or 600V AC (rms)
Note：
In the small voltage range, the pen is not connected to the circuit under test, the
instrument may have beating the reading,
This is normal, this is because the instrument caused by high sensitivity, does not affect
the actual measurement results.
3.2.3 AC voltage
Range
Resolution
Accuracy
2V
0.001V
（0.8% of reading + 3words）
20V
0.01V
200V
0.1V
（1.0% of reading + 10words)
600V
1V
- Input impedance: 10MΩ
- Maximum input voltage: 600V AC (RMS) or 600V DC
- Frequency range: 40 ~ 1000Hz True RMS
Note:
In the small voltage range, the pen is not connected to the circuit under test, the
instrument may have beating the reading,
This is normal, this is because the instrument caused by high sensitivity, does not affect
the actual measurement results.
8
3.2.4 Alternating current
Range
Resolution
Accuracy
200.0uA
0.1uA
（1.5% of reading +10words)
2000uA
1uA
20.00mA
0.01mA
200.0mA
0.1mA
2A
0.001A
（2.5% of reading +10words）
10A
0.01A
- Overload protection: mA range fuse (self-recovery fuse 200mA / 250V)
10A range without insurance
- Maximum input current: mA: 200mA DC or AC rms;
10A: 10A DC or AC rms;
When the measured current is greater than 5A, the continuous measurement time is not
longer than 15 seconds, after the measurement to stop the current measurement for more
than 1 minute.
- Frequency response: 40Hz ~ 1000Hz True RMS.
3.2.5 DC
Range
Resolution
Accuracy
200.0uA
0.1uA
（1.0% of reading +5words)
2000uA
1uA
20.00mA
0.01mA
200.0mA
0.1mA
2A
0.001A
（2.0% of reading +10words)
10A
0.01A
- Overload protection: mA range fuse (self-recovery fuse 200mA / 250V)
10A range without insurance
- Maximum input current: mA: 200mA DC or AC rms;
10A: 10A DC or AC rms; 9
When the measured current is greater than 5A, the continuous measurement time is
not longer than 15 seconds, after the measurement to stop the current measurement for
more than 1 minute.
3.2.6 Frequency
Range
Resolution
Accuracy
9.999Hz
0.001Hz
（1.0% of reading +3words)
99.99Hz
0.01Hz
999.9Hz
0.1Hz
9.999kHz
0.001kHz
99.99KHZ
0.01kHZ
999.9KHZ
0.1KHZ
9.999MHZ
0.001MHZ
- Overload protection: 250V DC or AC (rms)
- Input voltage range: 200mV ~ 10V AC (with the measured frequency increases, the input
voltage should also increase)
3.2.7 Duty cycle
Range
Resolution
Accuracy
0.1 –99.9%
0.1%
3.0%
- Frequency response: 10 ~ 10MHz
- Input voltage range: 200mV ~ 10VAC (with the measured frequency increases, the input
voltage should also increase)
- Maximum input voltage: 250V AC (rms)
10
3.2.8 Resistance
Range
Resolution
Accuracy
200
0.1
（0.8% of reading +3words）
2k
0.001k
20k
0.01k
200k
0.1k
2M
0.001M
（1.2% of reading +3words）
20M
0.01M
- Open circuit voltage: approx. 1.0V
- Overload protection: 250V DC or AC (rms)
3.2.9 Line off test
Range
Resolution
Function
0. 1
If the measured resistance is less
than 50Ω, the buzzer inside the
instrument may sound or may not
sound. Less than 10Ω will be
pronounced
- Open circuit voltage: approx. 1.0V
- Overload protection: 250V DC or AC (rms)
3.2.10 Diode test
Range
Resolution
Function
0.001V
Displays the approximate diode
forward voltage
- Forward DC current of about 1mA
- Reverse DC voltage of about 3.0V
- Overload protection: 250V DC or AC (rms)
11
3.2.11 Transistor test
Range
Description
Test Conditions
hFE
The display reads
the approximate
value of hFE
（0~1000）
Base current of about 10uA;
Vce about 2.8V
3.2.12 Capacitance
Range
Resolution
Accuracy
9.999nF
0.001nF
（4.0% of reading +3words）
99.99nF
0.01nF
999.9nF
0.1nF
9.999F
0.001F
99.99F
0.01F
999.9F
0.1F
9.999mF
0.001mF
（5.0% of reading +3words）
99.99mF
0.01mF
Not calibrated
- Overload protection: 250V DC or AC (rms)
3.2.13 Temperature test
Range
Accuracy
Resolution
－20℃－300℃
±(1.0%+4d)
1℃
301℃－1000℃
±(1.9%+5d)
1℃
-4℉－600℉
±(1.2%+6d)
1℉
601℉－1832℉
±(1.9%+6d)
1℉
- Overload protection: 250V DC or AC (rms)
12
4. Operation guide
4.1 readings remain
In the course of the measurement, if you want to keep the reading, press the " "
key, the display value of the monitor will be locked, and then press the key to release
the reading.
4.2 Function selection
1) In the voltage range, press "FUNC" key, will be in the AC voltage, DC voltage cycle
between the switch.
2) In the resistor, diode, buzzer file, press the "SEL" button, will be in the resistance,
on-off detection, diode three file cycle switch.
3) In the frequency, duty cycle file, press the "FUNC" key, will be in the frequency,
duty cycle between the switch.
4) In the temperature range, press the "FUNC" key, will be in degrees Celsius and
Fahrenheit cycle switch.
5) In the current file, press "FUNC" key, will be in the AC current, DC current cycle
between the switch
4.3 backlight and lighting
1) During the measurement, if the ambient light is too dark, the reading is difficult,
press the " " button for more than 2 seconds, turn on the backlight and the lights,
and turn off automatically after about 15 seconds.
2) During this period, if the " " button for more than 2 seconds will manually
turn off the backlight and lighting.
Backlight and lighting of the luminous body for the LED, the working current is large,
although the instrument has a timer circuit (timing time of about 15 seconds), but often
use the backlight and lighting will shorten the battery life, so unnecessary Of the
circumstances, should be used as little as possible backlight.
13
note:
When the battery voltage ≤7.5V, the display shows " " (undervoltage) symbol.
However, in the case of using a backlight or an illuminator, the " " symbol may
be displayed when the battery voltage is ≥7.5 V due to a large operating current, and
the " " symbol may not show the accuracy of the measurement ), Then do not replace
the battery, in the absence of backlight, the case of normal use of light until the "
" symbol display re-line replacement.
4.4 automatic shutdown
1) If there is no operation for any 15 minutes after power on, the instrument will go
to sleep automatically to save power. 1 minute before the shutdown, the buzzer has 5
prompts, shut down before a long sound into the dormant state. (Note: automatic shutdown
is still 3 ~ 5uA of the working current, a long time do not use the best to go to OFF
or unplug the battery)
2) automatically shut down, press the FUNC key, the instrument to resume working status.
Or turn the knob switch to OFF, and then rotate to the desired range.
3) If the "FUNC" key is pressed while the unit is turned on, the auto power off function
is canceled.
4.5 buzzer
When the key is pressed or the function switch is on, the buzzer will sound "Beep"
(about 0.25 seconds). If the measured voltage or current is greater than the set alarm
value, for example, the AC voltage is greater than 600V, The voltage is greater than
600V, AC and DC current greater than 10A, the buzzer will continue to pronounce, as
over-range warning; automatically shut down about 1 minute before the buzzer will be
issued five consecutive warning, before the shutdown buzzer will send a long warning ;
When the automatic shutdown function is canceled, every 15 minutes will be issued 5
consecutive warning.
4.6 Preparation for measurement
1) toggle the switch and turn on the power. If the battery voltage is low (about ≤7.5V),
the display 14
Display " " symbol, then you should replace the battery.
2 " "sign indicates that the input voltage or current should not exceed the indicated
value, which is to protect the internal wiring from damage.
3) Place the changeover switch in the desired measurement function and range.
4) When wiring, connect the common test leads and connect the live test leads. Remove
the live test line when removing the wiring.
4.7 AC and DC voltage measurement
Warning
Risk of electric shock
When measuring high voltage, pay special attention to avoid electric
shock.
Do not enter a voltage higher than 600V DC or 600V AC rms to prevent
electrical shock or damage to the instrument.
Do not apply more than 600V DC or 600V AC rms voltage between the common
and the earth to prevent electrical shock or damage to the instrument.
The DC voltage range of the instrument is: 2.000V, 20.00V, 200.0V, 600V
The AC voltage range is: 2.000V, 20.00V, 200.0V, 600V
1) Place the diverter switch in the AC / DC voltage position. Select the AC or
DC voltage function as required.
2) Connect the red and black test leads to COM and the input socket
respectively.
3) Measure the other ends of the test pen and connect them to the voltage source or load.
4) Read the measured voltage value from the LCD monitor. When measuring the DC voltage,
the display will be the same time
Displays the polarity of the voltage to which the red test leads are connected.
15
note:
1) In the small voltage range, such as DC 2V or AC 2V range, the pen is not connected
to the measured electrical
The LCD will have a beating reading, which is normal, this is because the instrument
caused by high sensitivity, when the instrument connected to the circuit under test,
you will get a real measurement.
2) " " indicates that the maximum input voltage is 600V AC or 600V DC. 14
3) If the meter detects a reading greater than 600V DC or 600Vrms AC, a "beep" alarm
sounds.
4.8AC and DC current measurement
Warning
Risk of electric shock
Do not attempt to perform current measurement on the circuit when the voltage between
the open circuit and ground exceeds 250V. If the fuse is blown during measurement, it
may damage the instrument or damage yourself.
In order to avoid damage to the instrument or equipment under test, before
the current measurement, please check the instrument fuse. When measuring,
use the correct input socket, function and range. Do not connect the other
end of the test leads in parallel to any circuit when the test leads are
inserted in the current input receptacle
The AC and DC current range of the instrument is 200uA, 2000uA, 20mA, 200mA, 10A.
Measure current
1) Turn the rotary switch to the appropriate gear. Select AC or DC current function as
needed.
2) Connect the black test lead to the COM input socket. If the measured current is less
than 200mA, connect the red test pen to the mA input socket. If the measured current
is between 200mA and 10A, connect the red test lead to the 10A input socket.
3) Disconnect the circuit to be tested. Connect the black test pen to one end of the
disconnected circuit (the lower voltage) and connect the red test lead to the other end
of the circuit that is broken (its voltage is high).
4) Connect the power to the circuit and read out the displayed readings. If the display
only displays "OL", this means that the input exceeds the selected range and the rotary
switch should be placed in a higher range.
4.9 Resistance measurement
Warning
Risk of electric shock.
To avoid damage to the instrument or equipment under test, all power supplies
of the circuit under test and all high voltage capacitors should be fully
discharged before measuring the resistance.
The unit of measurement of the resistance is ohm (Ω)
The resistance range of the instrument is: 200.0Ω、2.000kΩ、20.00kΩ、
200.0kΩ、2.000MΩ、20.00MΩ。
Measuring resistance:
1) Turn the rotary switch to the file. (Native default resistance range)
2) Insert the black test lead into the COM jack and the red test lead into
the jack.
3) Measure the resistance of the circuit under test with the other ends of the test pen.
4) Read the measured resistance value from the LCD monitor.
Note：
1) The measured resistance value on the circuit is usually different from the resistance
rating.
2) In the measurement of low resistance, in order to measure the accuracy of the two
short-circuit test pen, read the pen short-circuit electricity, resistance, measured
in the measured resistance to be subtracted after the resistance value.
3) In the 20MΩ file, the instrument may take several seconds to stabilize the reading,
which is normal for high resistance measurements.
4) When the meter is open, the display will show "0L", indicating the measured value
overrange range. 17
4.10 Diode test
Warning
Risk of electric shock.
In order to avoid damage to the instrument or equipment under
test, before measuring the diode, all the power supply of
the circuit under test should be cut off and all high voltage
capacitors should be fully discharged.
Test a diode outside the circuit
1) Turn the rotary switch to the file and press the "FUNC" button to switch
to the test state.
2) Insert the black test lead into the COM jack and the red test lead into
the jack.
3) Connect the diode anode at the other end of the red test lead, and connect the diode
to the other end to test the diode cathode.
4) The meter will show the approximate value of the forward voltage drop of the diode
under test. If the polarity of the test leads is reversed, the meter will display
"OL."
In the circuit, the normal diode should produce a forward voltage drop of 0.5V
to 0.8V; however, the reverse bias reading will depend on the resistance change of
the other channels between the two test leads.
4.11 Beep off test
Warning
Risk of electric shock.
To avoid damage to the instrument or equipment under test,
disconnect all power from the circuit under test and
discharge all high voltage capacitors fully before the beep
off test.
To perform on-off test:
1) Turn the rotary switch to the file and press the "FUNC" button to switch to
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