NCV
UT202A
+
±(
1
.
0
%+
5
)
UT201
+
UT202
+
4
.
000V
40
.
00V
400
.
0V
600V
6
.
000V
60
.
00V
600
.
0V
0
.
001V
0
.
01V
0
.
1V
1V
±(
1
.
0
%+
5
)
±(
0
.
8
%+
5
)
600Vrms
UT202A
+
UT201
+
UT202
+
600Vrms
400
.
0mV
4
.
000V
40
.
00V
400
.
0V
600V
600
.
0mV
6
.
000V
60
.
00V
600
.
0V
0
.
1mV
0
.
001V
0
.
01V
0
.
1V
1V
±(
0
.
7
%+
3
)
±(
0
.
5
%+
2
)
±(
0
.
7
%+
3
)
10Hz
～
10MHz
0
.
1
～
99
.
9%
%
0
.
01Hz
～
0
.
01MHz
0
.
1%
±(
0
.
1
%+
4
)
±(
3
.
0
+
5
)
%
600Vrms
UT202A
+
UT201
+
UT202
+
600Vrms
600Vrms
400.0Ω
4.000kΩ
40.00kΩ
400.0kΩ
4.000MΩ
40.00MΩ
600.0Ω
6.000kΩ
60.00kΩ
600.0kΩ
6.000 MΩ
60.00 MΩ
0.1Ω
0.001kΩ
0.01kΩ
0.1kΩ
0.001MΩ
0.01MΩ
±(
1.0%+2)
±(0.8%+2)
±(2.0%+5)
UT202A
+
UT201
+
UT202
+
400.0Ω
600.0Ω
0.1Ω
600Vrms
UT202
+
UT202A
+
-
40
℃～
40
℃
40
℃～
500
℃
500
℃～
1000
℃
-
40
℉～
104
℉
104
℉～
932
℉
932
℉～
1832
℉
±
4
℃
±(
1
.
5
%+
5
)
±(
2
.
0
%+
5
)
±
6
℉
±(
2
.
0
%+
6
)
±(
2
.
5
%+
4
)
1
℃
1
℉
600Vrms
10 NCV
.
NCV
4.000nF
40.00nF
400.0nF
4.000uF
40.00uF
400.0uF
4.000mF
6.000nF
60.00nF
600.0nF
6.000uF
60.00uF
600.0uF
6.000mF
60.00mF
0.001nF
0.01nF
0.1nF
0.001uF
0.01uF
0.1uF
0.001mF
0.01mF
±(
4
.
0
%+
10
)
±(
4
.
0
%+
5
)
±
10
%
0.01Hz~
0.01kHz
EFLo
EFHI
7.Temperature Measurement (UT202+ only, Picture 5)
1) Insert the positive pole of the temperature probe into the
“ ” jack and negative pole into the “
COM
” jack.
2) Turn the function switch to the “
°C/°F
” position and the LCD will
display room temperature.
3) Fix the temperature probe on the object to be tested, and read the
temperature value of the tested object directly from the display
after a few seconds.
4) Press the SELECT button to switch between °C and °F.
8. Non-contact AC Electric Field Sensing (NCV, Picture 6a )
The electric field sensing sensitivity is divided into two levels (“EFHI”
and “EFLo”). The meter defaults to “EFHI”. Select different sensitivity
levels for measurement according to the intensity of the measured
electric field. When the electric field is around 220V (AC) 50Hz/60Hz,
select "EFHI"; when the electric field is around 110V (AC) 50Hz/60Hz,
select “EFLo”.
1) Turn the function switch to the NCV position.
2) Bring the NCV sensing end of the clamp jaws close to a charged
electric field (socket, insulated wire, etc.). The LCD will display the
segment "-", the buzzer will beep, and the red LED will flash. As
the intensity of the measured electric field increases, the more the
segments (----) are displayed, and the higher the frequency at which
the buzzer beeps and the red LED flashes.
Note:
• Use the NCV sensing end of the clamp jaws to approach the measured
electric field, otherwise the measurement sensitivity will be affected.
• When the measured electric field voltage is
≥
100V (AC), observe
whether the conductor of the measured electric field is insulated to
avoid personal injury.
9.Live/Neutral Wire Measurement ( only, Picture 6b)
1) Turn the function switch to the LIVE position.
2) Insert the red test lead into the “ ” jack, make the
suspended, and use the red test lead to touch the
black test lead
wire to distinguish the live or neutral wire.
socket or bare
3) When the neutral wire or uncharged object is detected, the "----"
state is displayed.
4) When the AC "live wire" (>60 V) is detected, the LCD will display
"LIVE" accompanied by audio/visual indication.
Note:
• When using the LIVE function, in order to avoid the effect of the
interference electric field of the COM input on the accuracy of
distinguishing the live/neutral wire, please move the black test lead
away from the COM input.
• When using the LIVE function, keep your hand away from the meter
casing.
• When the LIVE function is applied to the measurement of dense
high-voltage electric field, the accuracy of the meter to judge the
"live wire" may be unstable. In this case, it should be judged by the
LCD display and sound frequency together.
10. Others
1) Auto power off: During measurement, if there is no operation of the
function switch or any button for 15 minutes, the meter will automatically
shut down to save power. You can wake it up by pressing any button
or restart it after turning the function switch to the OFF position.
To disable the auto power off function, press and hold the SELECT
button in the off state, and then turn on the meter . To resume the
auto power off function, restart the meter after shutdown.
2) Buzzer: When any button is pressed or the function switch is turned,
if it is valid, the buzzer will make one beep (about 0.25s). When
measuring voltage or current, the buzzer will beep intermittently to
indicate the over range.
3) Low battery detection: The battery voltage will be automatically
detected as long as the meter is on. If it is lower than 2.5V, the LCD
will display the “ ” symbol.
4) Low battery shutdown function: When the battery voltage is lower
than 2.4V, the LCD displays the “ ” symbol, the “Lo.bt” interface
appears and lasts for about 10s, the buzzer makes consecutive
beeps three times, and then the meter automatically shuts down
(no interface is displayed).
X. Technical Specifications
Accuracy: ± (a% of r b digits), 1 year calibration period
Ambient temperature and humidity: 23°C±5°C;
≤
80%RH
Temperature coefficient: To ensure measurement accuracy, operating
Note:
• The ambient temperature of the
meter should be in the range of
18-28°C, otherwise it will cause
measurement error.
• The positive and negative poles
of the temperature probe should
be properly connected. Do not
measure non-insulated live
objects to avoid incorrect readings.
• Do not input voltage higher than
30V to avoid personal injury.
4
.
000A
40
.
00A
400
.
0A
UT202A
+
6
.
000A
60
.
00A
600
.
0A
±(
4
%+
10
)
±(
2
%+
10
)
0
.
001A
0
.
01A
0
.
1A
UT201
+
UT202
+
UT202A
+
UT201
+
UT202
+
420A
620A
±(
1
.
0
%+
5
)
0.1Hz
1.AC Current
Range
Resolution
Accuracy
Overload Protection
Current frequency
monitoring:
50Hz~100Hz
•
• For 4A range, open circuit allows least significant digit <3.
• Accuracy guarantee range: 1%~100% of range
• The input current amplitude of the current frequency should be >2A.
Frequency response: 50Hz~100Hz
Range
Resolution
Accuracy
Overload
Protection
2.AC Voltage
Voltage frequency
monitoring: 10Hz~10kHz
• Input impedance: About 10MΩ
• Frequency response: 45Hz~400Hz, true RMS display
• Accuracy guarantee range: 1%~100% of range; the input voltage amplitude
of the voltage frequency should be >5V.
• The AC crest factor of a non-sinusoidal wave can reach 3.0 at 4000 counts
while can only reach 1.8 at 6000 counts. The additional error should be
added for the corresponding crest factor as follows:
a) Add 3% when crest factor is 1~2
b) Add 5% when crest factor is 2~2.5
c) Add 7% when crest factor is 2.5~3
3.DC Voltage
Range
Resolution
Accuracy
Overload
Protection
•
• For mV range, short circuit allows least significant digit 5.
• Accuracy guarantee range: 1%~100% of range
Input impedance: About 10MΩ
≤
4.Frequency/Duty Ratio ( only)
Range
Resolution
Accuracy
Overload Protection
1) Measuring sensitivity:
≤
100kHz: 200mVrms
≤
input
amplitude
≤
30Vrms
>100kHz~1MHz: 600mVrms
≤
input amplitude
≤
30Vrms
>1MHz~10MHz: 1Vrms
≤
input
amplitude
≤
30Vrms
2) Duty ratio is only applicable to
the measurement of square wave
≤
10kHz; amplitude: 1Vp-p
Frequency
≤
1kHz Duty ratio:
10.0%~95.0%
Frequency >1kHz Duty ratio:
30.0%~70.0%
5. Resistance
Range
Resolution
Accuracy
Overload
Protection
6. Continuity
Range
Resolution
Accuracy
Overload
Protection
Open circuit
voltage: About 2.0V
<
10
Ω
: Consecutive
beeps
>31
Ω
: No beep
temperature should be within 18°C ~28°C and the fluctuation range
should be within ±1°C. When the temperature is <18°C or >28°C,
add temperature coefficient error 0.1 x (specified accuracy)/°C.
600Vrms
UT202A
+
UT201
+
UT202
+
4
.
000V
6
.
000V
0
.
001V
7. Diode
Range
Resolution
Accuracy
Overload
Protection
Open circuit voltage:
About 2.2V (UT201+
/UT202+)/3.9V
()
Measurable PN
junction: Forward
voltage drop
≤
2V.
For the silicon PN
junction, the normal
value is generally
about 0.5~0.8V.
8.Capacitance
Range
Resolution
Accuracy
Overload
Protection
• Measured value = displayed value - open circuit value of the test
leads (For capacitance 100nF, it is recommended to use “REL”
≤
measurement mode.)
• For capacitance range, open circuit allows least significant digit 20.
≤
9.Temperature(UT202+ only)
Range
Resolution
Accuracy
Overload
Protection
Range
Electric field sensing
sensitivity level
Accuracy
To sense the wire above 24±6V
and identify whether the mains
socket is charged
To sense the wire above
74V±12V, to identify whether
the mains socket is charged,
or to judge the live/neutral wire
of the socket according to the
intensity of the sensing
•
Test results may be affected by different socket designs or wire
insulation thickness.
XI. Maintenance
Warning: Before opening the rear cover of the meter, remove the
test leads to avoid electric shock.
1.General Maintenance
1) When the meter is not in use, place the function switch in the OFF
position to avoid continuous consumption of battery energy.
2) Clean the meter casing with a soft cloth and mild detergent.
Do not use abrasives or solvents!
3) The maintenance and service must be implemented by qualified
professionals or designated departments.
2.Battery Replacement (Picture 7)
1) Turn off the meter and remove the test leads from the input terminals.
2) Unscrew the screw of the battery compartment, remove the battery
cover, and replace the 2 standard AAA batteries according to the
polarity indication.
3) Secure the battery cover and tighten the screw.
Red
Picture 7
Picture 6a
Picture 6b
Red
Black
Picture 5
6.Capacitance Measurement (UT202+/, Picture 4)
1) Insert the red test lead into the “ ” jack, black into
the “
COM
” jack.
2) Turn the function switch to the “ ” position, and connect the test
leads with the measured capacitance in parallel. For capacitance
≤
100nF, it is recommended to use “REL” measurement mode.
Note:
• If the measured capacitor is short-circuited or the capacitance exceeds
the maximum range, the LCD will display “OL”.
• When measuring capacitance >400μF, it may take some time to
steady the readings.
• Before measuring, fully discharge all capacitors (especially for
capacitors with high voltage) to avoid damage to the meter and user.
