Page 1
Table of Contents
1. Introduction ………………………………………………. 1
2. Safety note ……………………………………………..… 2
3. Explanation of Controls and Indicators …………………... 3
3-1. Product illustration ………………………………………. 3
3-2. Functional push button ……………………………………. 4
3-3. LCD display ………………………………………………. 5
4. Specification ………………………………………………. 5
4-1. General Specification ……………………………………... 6
4-2. Electrical Specification …………………………………. 7- 9
5. Measurement operation ………………………………….. 9
5-1 DC voltage & AC voltage measurement ………………... 9
5-2. Resistance measurement …………………………….….. 10
5-3. Diode & Continuity check ………………………..…..… 11
5-4. Frequency Measurement [ Only for ADM01 ] …….…… 11
5-5. DC/AC µA or mA measurement ………………….……. 12
5-6. DC/AC 10A measurement …………………………..…. 12
5-7 Temperature measurement [ Only for ADM02 ] ………..…. 12
6. Maintenance ………………………………………………. 13
6-1. Replacing the battery …………………………...………. 13
6-2. Replacing the fuse ………………………………………. 13
6-3. Cleaning and Decontamination …………………………. 13
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1. Introduction
This manual is used to ADM01 and ADM02 Digital Muti Meter only.
This Meter is a handheld and battery operated Digital
MultiMeter(DMM) with multi function. This Meter is designed to meet
IEC61010-1 & CAT II 600V over voltage category and double insulation.
The meter with holster that is giving the main body, though
downsized, high resistance against the shock of a drop.
This operating instruction covers information on safety and caution.
Please read relevant information carefully and observe all the
warnings and note strictly.
The DMM as general measurement tool and widely used in the school,
laboratory, factory and other social field.
2. Safety note
Warning
To avoid possible electric shock or personal injury and to avoid
possible damage to the meter or to the equipment under test, adhere
to the following rule:
Do not apply more than the rated voltage, of marked
on the meter, between the input terminal and
grounding terminal..
Do not apply voltage between COM and OHM terminal,
in the resistance measuring state.
Do not measure current with test lead inserted into
voltage or OHM terminal.
Do not expose the instrument to the direct sun light,
extreme temperature and humidity or dew full.
Inspect the test lead for damaged insulation or
exposed metal.
Before measuring current, check the Meter’s fuses and
turn off power to the circuit before connecting the
meter to the circuit.
Disconnect circuit power and discharge all high
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voltage capacitors before testing continuity, diode,
resistance, capacitance or current.
Note international Electrical Symbol.
Dangerous
Voltage
Ground
AC Alternating
current
Warning
see explain in manual
DC (Direct
Current)
Double insulation
AC or DC
Fuse
Measurement category(over voltage category):
This instrument is meet the safety condition of CAT II. The
equipment is used for measurement in building facilities.
Examples are measurements on distribution boards, circuit
breaker and industrial equipment located in fixed facilities, as
a fixed motor.
3. Explanation of controls and indicators
3-1. Meter illustration
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Fig. 1 Exterior view
1. LCD display 2. “MAX” push button 3. “BACK LIGHT” push
button 4. ‘HOLD” push button 5. “FUNC” Push button
6. Rotary Switch (Knob) 7. “V/Ω/HZ/uA/mA/Temp”Input terminal
[‘Hz’ is for ADM01 and ‘Temp’ is for ADM02]
8. “COM” input terminal 9. “10A” input terminal
3-2. Functional push button
Push button
Function
Func
“FUNC” key is the function select key that acts
with trigger. Use the key as switch of DC/AC
current, Diode/Continuity and℃/℉.
HOLD
Press “HOLD” to enter and exit the hold mode
in any mode. That act with trigger.
MAX
This key is act with trigger. Press this key once,
the maximum value is holding (Will displays
‘MAX’ symbol in the LCD).
After pressing the key, A/D will keep working,
and the display value are always up dated and
kept the maximum value.
NOTE: The actual gained value is not the peak
value.
This key is used control Backlight. This key is act
with trigger. When press and hold the key over
2 sec, will enable Backlight.
Press the key again , the backlight will disable.
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3-3. Display indicators
Fig. 2 LCD
Indicator
Meaning
DC voltage or current
AC voltage or current
Diode
MAX
Maximum value
HOLD
Data hold
Low battery indicator
MKΩ
Ω KΩ MΩ is unit of resistance
℃/℉
The unit of temperature
(℃: Centigrade; ℉: Fahrenheit)
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µmVA
mV ,V is unit of voltage
µA, mA, A is unit of current
－
Indicate negative reading
4．Specification
4-1. General Specification
● Auto ranging DMM , that full scale is 2000 counts
●
Display : 3 1/2 digit LCD display..
●
Over load protection: Used the PTC protection circuit for
Resistance, temperature( for ADM02) and frequency
measurement for (AMD01).
●
DATA HOLD function
● MAX value hold function
●
Back Light
●
Low battery indication
●
Auto Power- OFF. : If the meter is idle for 15 minutes (idle time),
the meter automatically turns the power off. After auto
power-off, pushing any of the push button or changing the rotary
switch can turn on the meter again.
NOTE:
（1）
After auto power off in the AC mode, if changing the
rotary switch to the DC mode, the Re-power on if
disabled.
(2) The meter enters sleep mode after quto power off. If
press “HOLD” push button to re-power on in the sleep
mode, the auto power off function is disabled.
●
Operating temperature & Humidity:
0 ~ 40℃ (32 ~104 ℉) & < 80% RH
●
Storage temperature & Humidity:
-10 ~ 50℃(14 ~ 122℉) & <70%RH
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●
Power Supply: 9V Battery(6F22 or 1604A Type) x 1pc.
● Safety Class: IEC 61010-1, CAT II 600V.
●
Dimension(L x W x H) & Weight:140 x 67 x 30mm, Approx. 112g
4.1.1 Accessary:
1. User’s Manual ---------------------------- 1pc
2. Test lead ---------------------------- 1set
3. 9V Battery --------------------------- 1pc
4. K-type temperature probe---- 1pc(For ADM02)
4-2. Electrical Specification ( at 23±5℃; <75% RH)
4.2.1 DC Voltage
Range
Resolution
Accuracy
200mV
0.1mV
±（0.5% rdg + 2dgt）
2V
0.001V
20V
0.01V
200V
0.1V
600V1V±（0.8% rdg + 2dgt
）
* Over load protection: SG(Spark Gap) used to protect that the
voltage overred 1500V
4.2.2 AC Voltage
Range
Resolution
Accuracy
2V (40Hz-400Hz)
0.001V
±（0.9% rdg + 3dgt）
20V (40Hz-400Hz)
0.01V
200V (40Hz-400Hz)
0.1V
600V (40Hz-200Hz)
1V
±（1.2%
）
rdg + 3dgt
* SG(Spark Gap) used to protect High voltage that is
over 1500V.
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4.2.3 Resistance
Range
Resolution
Accuracy
200Ω
0.1Ω
±（0.8% rdg + 2dgt
）
2kΩ
0.001kΩ
20kΩ
0.01kΩ
200kΩ
0.1kΩ
2MΩ
0.001MΩ
±（1.0% rdg + 2dgt）
20MΩ
0.01MΩ
4.2.4 Diode check
Range
Resolution
Function
0.001V
Will display the forward drop voltage.
* Operating current：about 1mA
* Open circuit voltage：about 1.48V
4.2.5 Continuity
Rang
e
Function
If measured resistance less than 100Ω, will buzzer is
sounded.
* Open voltage: about 0.5V
4.2.6 DC Current
Range
Resolutio
n
Accuracy
200µA
0.1μA
±（1.5% rdg + 3dgt
）
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2000µ
A
1µA
20mA
0.01mA
200mA
0.1mA
10A
0.01A
* Over Load protection：use the fuse(F250mA/250V) at µA /mA range,
and use the fuse(F10A/250V) at 10A range.
* Max input current:：250mA at ‘mA’ input terminal and 10A at ‘10A’
input terminal.. .
4.2.7 AC Current [40Hz-400Hz]
Range
ResolutionAccuracy
200µA
0.1µA
（
1.5% rdg + 4dgt
）
2000µ
A
1µA
20mA
0.01mA
200mA
0.1mA
10A
0.01A
* Over Load protection：use the fuse(F250mA/250V) at µA /mA range,
and use the fuse(F10A/250V) at 10A range.
* Max input current:：250mA at ‘mA’ input terminal
and 10A at ‘10A’ input terminal...
* Frequency response：40
～
400Hz
4.2.8 Frequency (For ADM01)
Range
Resolution
Accuracy
20kHz
10 KHz
±（1.5%rdg+5dgt）
* Sensitivity： 0.8V
4.2.9 Temperature (For ADM02)
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You can selecting [℃] or [℉] by “FUNC” key.
Range
-20℃~ 1000
℃
Resolutio
n
1
℃
-20℃~0℃
(（5% rdg + 4dgt）
Accuracy
0℃~400
℃
(（2% rdg + 3dgt
）
400℃~1000
℃
(（3% rdg + 3dgt
）
Fahrenheit Temperature [℉]
Range
0℉~1800℉
Resolutio
n
1℉
-0℉~50
℉
(（5% rdg + 4dgt
）
Accuracy
50℉~750
℉
(（2% rdg + 3dgt
）
750℉~1800℉
(（3% rdg + 3dgt）
5. Measurement operation
5-1 DC & AC voltage measurement
Warning:
To avoid harms to you or damage to the meter from electric
shock. Please do not attempt to measure voltage higher than
DC/AC 1000V although readings may be obtained.
The DC voltage range are 200.0mV, 2.000V, 20.00V , 200.0V and
600V and then. The AC voltage ranges are 2.000V, 20.00V,
200.0V and 600V.
To measure DC or AC voltage:
① Insert the red test lead into the “VΩ” input terminal and the
black test lead into the COM terminal.
② Set the rotary switch to DC or AC range.
③ Connect the test lead across with the object under testing.
The measured value will be show on the LCD display.
Note:
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When DC or AC voltage measurement has been completed,
disconnect the connection between the testing lead and the circuit
under testing.
5-2. Resistance measurement
The resistance range are: 200.0Ω, 2.000KΩ,20.00KΩ, 200.0KΩ ,
2.000MΩ.20.00MΩ.
To measure resistance, connect the meter as follows:
① Insert the red test lead into the ”VΩ” terminal and the black
test lead into the COM terminal.
② Set the rotary switch to proper resistance range..
③ Connect the test lead across with the object under testing.
The measured value will be show on the LCD display.
Note:
●
The test lead can add 0.1Ω to 0.2Ω of error to resistance
measurement. To obtain precision reading in low-resistance
measurement, that is the range of 200.0Ω, short the input
terminal before measuring. In this time, the contact
resistance displayed on the LCD.You can subtract the contact
resistance value from the measured value.
●
For high-resistance measurement (>10MΩ), it is normal
taking several second to obtain stable reading.
● The LCD display “OL” indicating open-circuit for the tested
resistor or the resistor value is higher than the maximum
range of the meter.
5-3. Diode/Continuity check
5.3.1. Diode
① Set the rotary switch to “ ” position. First time, default
mode is diode check mode. You can enter the continuity check
mode by the “ FUNC” Key.
② insert the red test lead into the “VΩ” terminal and the black test
lead into the “COM” terminal.
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③ Use the diode test mode to check diodes, transistors and other
semiconductor device. In the diode test mode sends a current
through the semiconductor junction, and the measure the
voltage drop across the junction. A good silicon junction drop
between 0.5V and 0.8V.
④ For forward voltage drop reading on any semiconductor
component, place the red test lead on the component anode
and place the black test lead on the component cathode. The
measured value show on the display.
⑤ Reverse the test lead and measure the voltage across the diode
again.
●
If diode is good, the display shows “OL”.
●
If diode is shorted, the display shows 0 (zero) in both
direction.
●
If display shows “OL” in both direction, the diode is open.
5.3.2. Continuity Check:
① Press the “FUNC” key to enter to the continuity mode.
② The buzzer sound if the resistance of a circuit under test is less
than 100Ω.
5-4. Frequency measurement [ Only for ADM01]
① Set the rotary switch to “Hz” position.
② Insert the red test lead into the “ VΩHz” input terminal and the
black test lead into the “COM” terminal.
③ Connect the test leads across with the circuit under testing. The
measured value shown.on the LCD display.
NOTE: Input signal level must be higher than 0.5V (it is sensitivity).
5-5. DC/AC µA or mA measurement
DC Current range is 200.0µA/2000µA and 20.00mA,/200.0mA and
then 10A range.
AC Current range is 200.0µA/2000µA and 20.00mA,/200.0mA and
then 10A range.
① Turn off power to the circuit. Set the rotary switch to the
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properDC/AC µA or DC/AC mA position.
② Break the current path to be tested. Connect the red test
lead to the more positive side of the break and the black
test lead to the more negative side of the break.
③ Turn on power to the circuit. The measured value show on
the display.
5-6. DC/AC 10A measurement
① Insert the red test lead into the input terminal marked as
“10A”.
② The measuring procedure is same as that of 5-5 section..
Note:
●
For safety’s sake, the measuring time for high current should be
≤10 second for each measurement and the interval time between
two measurement should be greater than 5 minutes.
●
When current measurement has been completed, disconnect the
connection between the testing lead and the circuit under test.
5-7. Temperature measurement [ Only for ADM02]
To measuring temperature shuld be use the K-type probe :P3400.
① Set the rotary switch to the “TEMP” range. In this time, The
environment temperature value displayed on the LCD.
② Insert the K-type probe to the two “COM” and “TEMP”
terminals. The two “+” and “-“ pins of temperature probe(P3400)
must be direct at the “COM” & “℃”terminal respectively.
③ The measured temperature value will be displayed on the LCD.
6. Maintenance
6-1. Replacing the battery
When meter display the battery must be replace to
maintain normal operation.
① Disconnect and remove all test probes from any live source
and meter.
② Open the battery cover on the bottom case by screwdriver.
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③ Remove old battery and snap new one into battery holder
6-2. Fuse replacement
Replacing the defective fuse should the done according to the
following procedure.
① To avoid electrical shock, remove the test lead and any input
signal before opening the bottom case.
② Open the botton case and then remove the defective fuse
and insert a new fuse of the same size and rating.
③ Replace the bottom case and reinstall all the screw.
6-3.Cleaning and Decontamination
The meter can be cleaned with soft clean cloth to remove any oil,
grease or grim. Do not use liquid solvent or detergent.
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