UNI-T UT202A Operating Manual

Download Operating manual of UNI-T UT202A Measuring Instruments for Free or View it Online on All-Guides.com.

Brand: UNI-T

Category: Measuring Instruments

Type: Operating manual for UNI-T UT202A

Pages: 2

Download UNI-T UT202A Operating manual

UNI-T UT202A Operating manual - Page 1
1
UNI-T UT202A Operating manual - Page 2
2
Overview
This Operating Manual covers information on
safety and cautions. Please read the relevant
information carefully and observe all the
Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read
the Safety Informationcarefully before using
the Meter.
Model UT202A is 2000-count stable, safe and
reliable digital clamp multimeter(hereafter
referred to as "the Meter"). It is designed with
large-scale integrated circuits and A/D
converter as the core as well as the overload
protection and novel structure, which make
it a superb tool for electricians.
The Meter can measure AC/DC Voltage, AC
Current, Resistance, Diodes, and Continuity.
Unpacking Inspection
Open the package case and take out the Meter.
Check the following items carefully for any
missing or damaged part:
Item Description Qty
1 English Operating Manual 1 piece
2 Test Lead 1 pair
In the event you find any missing or damaged
part please contact your dealer immediately.
Safety Information
Th is Me te r c om pl ies w ith t he s ta nd ar d
IEC61010: Pollution Degree 2, Overvoltage
Category (CATII 600V, CAT III 300V) and Double
Insulation.
CATII: Local level, appliance, PORTABLE
EQUIPMEN T etc., with smaller t ransient
overvoltages than CATIII.
CAT III: Distribution level, fixed installation, with
smaller transient overvoltages than CAT IV
Use the Meter only as specified in this operating
manual, otherwise the protection provided by
the Meter may be impaired.
In this manual, a Warning identies conditions
and actions that pose hazards to the user, or
may damage the Meter or the equipment under
test.
A Note identifies the information that user
should pay attention to.
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 rules:
.esac eht tcepsni reteM eht gnisu erofeB
Do not use the Meter if it is damaged or the
case (or part of the case) is removed. Look for
cracks or missing plastic. Pay attention to the
insulation around the connectors.
I nspec t t he test le ads fo r damage d
insulation or exposed metal. Check the test
leads for continuity. Replace damaged test
leads with identical model number or electrical
specifications before using the Meter.
Do not apply more than the rated voltage,
as marked on the Meter, between the terminals
or between any terminal and grounding. If the
value to be measured is unknown, use the
When measurement has been completed,
disconnect the connection between the test
leads and the circuit under test, remove the
testing leads away from the input terminals of
the Meter and turn the Meter power off.
The rotary switch should be placed in
the right position and no any changeover of
range shall be made when measurement is
conducted to prevent damage of the Meter.
Do not carry out the measurement when
the Meter’s back case and battery compartment
are not closed to avoid electric shock.
Do not input higher than 600V between the
Meter’s terminals and the grounding to avoid
electric shock and damages to the Meter.
When the Meter is working at an effective
voltage over 60V in DC or 30V rms in AC,
special care should be taken for there is danger
of electric shock.
Use the proper terminals, function, and
range for your measurements.
Do not use or store the Meter in an
environment of high temperature, humidity,
explosives, inflammables and strong magnetic
field. The performance of the Meter may
deteriorate after dampened.
When using the test leads, keep your
fingers behind the finger guards.
Disconnect circuit power and discharge
all high-voltage capacitors before testing
resistance, continuity and diode.
Replace the battery as soon as the battery
indicator appears. With a low battery, the
Meter might produce false readings that can
lead to electric shock and personal injury.
When servicing the Meter, use only use
the replacement parts with the same model
or identical electrical specifications.
The internal circuit of the Meter shall not be
altered at will to avoid damage of the
Meter and
any accident.
Soft cloth and mild detergent should be
used to clean the surface of the Meter when
servicing. No abrasive and solvent should be
used to prevent the surface of the Meter from
corrosion, damage and accident.
The Meter is suitable for indoor use.
Turn the Meter off when it is not in use and
take out the battery when not using for a long time.
Constantly check the battery as it may leak
when it has been using for some time, replace
the battery as soon as leaking appears. A
leaking battery will damage the Meter.
International Electrical Symbols
AC (Alternating Current)
DC (Direct Current)
AC or DC
Grounding
Double Insulated
Warning. Refer to the Operating Manual
Low Battery Indication
Continuity Test
Diode
Conforms to Standards of European Union
The Meter Structure (See Figure 1)
Figure 1
1. Input Terminals
2. LCD Display
3. Functional Buttons
4. Rotary Switch
5. Trigger: press the lever to open the
transformer jaws. When the pressure on the
lever is released, the jaws will close.
6. Hand Guards: to protect user’s hand from
touching the dangerous area.
7. Transformer Jaws: designed to pick up the
AC current flowing through the conductor.
It could transfer current to voltage. The
tested conductor must vertically go through
the jaw center.
maximum measurement position and reduce the
range step by step until a satisfactory reading is
obtained.
Functional Buttons and Auto Power Off
1. HOLD
Press HOLD to enter and exit hold mode. Press
and hold HOLD button while turning on the
Meter, auto power off will be canceled.
2. MAX
Press MAX to start recording and updating of
maximum values.
3. SELECT
Under Ω ranging, resistance
measurement mode is default, press SELECT
to select continuity measurement mode or diode
measurement mode.
4. Auto Power Off
To preserve battery life, the Meter automatically
goes into a “sleep” mode if you do not press any
button for around 10 minutes. The Meter can be
activated by pressing any effective button (refer
to The Effectiveness of Functional Buttons),
then return to the display for the function
selected previously.
5. Buzzer
The buzzer sounds every time a effective button
is pressed down. When the meter will auto
power off in 1 minute the buzzer beeps five
times. Before power off there will be a long time
buzzer beeps.
6. The Effectiveness of Functional Buttons
Not every functional buttons can be used on
every rotary switch positions. Below table
describe which functional buttons can be used
on which rotary switch positions
Rotary Functional Buttons
Switch SELECT MAX HOLD
Positions
Ω • N/A
N/A
N/A
A 20A N/A
A 200A N/A
A 600A N/A
Display Symbols (See Figure 2)
Number
Description
1 Indicator for AC voltage or current
2 Indicator for DC voltage
3 The battery is low.
Warning: To avoid false readings, which
could lead to possible electric shock or
personal injury, replace the battery as soon as
the battery indicator appears.
4 The Meter is in the auto range mode in
which the Meter automatically selects
the range with the best resolution.
5 Test of diode
6 The continuity buzzer is on
7 Maximum reading displayed
8 Data hold is active
9 Amperes (amps). The unit of current.
10 Ω: Ohm. The unit of resistance.
kΩ:Kilohm. 1000 ohms
MΩ:Megohm. 1,000,000 ohms
11 V: Volts. The unit of voltage.
mV: Millivolt. 0.001 volts
12 Indicates negative reading
Figure 2
Measurement Operation
A. Measuring DC Voltage (See Figure 3)
Warning
To avoid harm to you or damage to the Meter
from eletric shock, do not attempt to measure
voltages higher than 600V AC/DC.
To measure DC voltage, connect the Meter as
follows:
1. Insert the red test lead into the
terminal and the black test lead into the
COM terminal.
2. Set the rotary switch to .
3. Connect the test leads across with the object
being measured.
The measured value shows on the display.
Figure 3
Note:
When DC voltage measurement has been
completed, disconnect the connection between
the testing leads and the circuit under test and
remove testing leads from the input terminals.
B. Measuring AC Voltage (See Figure 4)
Warning
To avoid harm to you or damage to the Meter
from eletric shock, do not attempt to measure
voltages higher than 600V AC/DC.
To measure AC voltage, connect the Meter as
follows:
1. Insert the red test lead into the
terminal and the black test lead into the
COM terminal.
2. Set the rotary switch to .
3. Connect the test leads across with the object
being measured.
The measured value shows on the display.
Figure 4
Note:
When AC voltage measurement has been
completed, disconnect the connection between
the testing leads and the circuit under test and
remove testing leads from the input terminals.
C. Measuring Resistance (See Figure 5)
Warning
To avoid damage to the Meter or to the
devices under test, disconnect circuit power and
discharge all the high-voltage capacitors before
measuring resistance.
To measure resistance, connect the Meter as
follows:
1. Insert the red test lead into the
terminal and the black test lead into the
COM terminal.
2. Set the rotary switch to ; resistance
measurement (Ω) is default or press
SELECT button to select Ω measurement
mode
3. Connect the test leads across with the object
being measured.
The measured value shows on the display.
Note:
Separating the objects being tested from
the circuit when measuring can obtain a more
accurate result.
Ω
Figure 5
When resistance measurement has been
completed, disconnect the connection between
the testing leads and the circuit under test and
remove testing leads from the input terminals.