Instrukcja obsługi Uni-T UT204
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Overview
This Operating Manual covers information on safety and cautions. Please read the
relevant information carefully and observe all the and strictly.Warnings Notes
Warning
To avoid electric shock or personal injury, read the “Safety Information” carefully
before using the Meter.
Model UT203/204 (hereafter referred to as "the Meter") is 4000-count stable, safe
and reliable digital clamp multimeter. They are designed with large-scale integrated
circuits and A/D converter as the core as well as the overload protection and novel
structure, which make them a superb tool for electricians.
The Meter can not only measure AC/DC Voltage, AC/DC Current, Frequency, Duty
Cycle, Resistance, Diodes, Continuity but also it has Data Hold, Sleep Mode and
Relative Mode features.
UT204 has an extra True RMS feature.
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
2
3
4
English Operating Manual
Test Leads
Carrying Bag
9V Battery (NEDA1604, 6F22 or 006P)
1 pc
1 pair
1 pc
1 pc
In the event you find any missing or damaged part, please contact your dealer
immediately.
Safety Information
This Meter complies with the standard IEC61010: Pollution Degree 2, Overvoltage
Category (CAT. II 600V, CAT. III 300V) and Double Insulation.
CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient
overvoltages than CAT. III.
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 identifies conditions and actions that pose hazards to the
user, or may damage the Meter or the equipment under test.
A identifies the information that user should pay attention to.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 rules:
or the case (or part of the case) is removed. Look for cracks or missing plastic.
Pay attention to the insulation around the connectors.
Inspect the test leads for damaged 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 maximum measurement position and reduce the range step
by step until a satisfactory reading is obtained.
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.
Before using the Meter inspect the case. Do not use the Meter if it is damaged
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 two Meter’s input terminal 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 to
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.
Safety Information
AC (Alternating Current)
DC (Direct Current)
AC or DC
Grounding
Double Insulated
Warning. Refer to the Operating Manual
Low Battery Indication
Continuity Test
Diode
Fuse
Risk of Electric Shock
Conforms to Standards of European Union
The Meter Structure (See Figure 1)
Figure 1
Input Terminals
LCD Display
Functional Buttons
Rotary Switch
Trigger: press the lever to open the transformer
jaws. When the pressure on the lever is released,
the jaws will close.
Hand Guards: to protect user’s hand from touching
the dangerous area.
Transformer Jaw: designed to pick up the AC and
DC current flowing through the conductor. It could
transfer current to voltage. The tested conductor
must vertically go through the Jaw center.
1.
2.
3.
4.
5.
6.
7.
Functional Buttons
Below table indicated for information about the functional button operations.
Button Description
Press HOLD to enter the Hold mode in any mode, the Meter beeps.
Press again to exit the Hold mode, the Meter beeps.HOLD
At and range:
Press to select manual ranging measurement mode. The Meter
is default to auto ranging measurement mode.
When the Meter is at manual ranging measurement mode, press
to step down the range.
At range:
Press to enter the REL mode.
It subtracts a stored value from the present measurement value
and displays a result.
At range:Hz/Duty%
Press to switch between Hz measurement mode and Duty %
measurement mode.
HOLD
REL V
A
SELECT Press button to select the alternate functions marked inSELECT
blue colour on the Meter’s faceplate including , ,
40 , and 400 .
After the Meter entering Sleep Mode, press and hold toSELECT
turn the Meter on, it will disable the Sleep Mode feature.
V
A A
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 Switch
Positions
Functional Buttons
SELECT REL HOLD
N/A
N/A
N/A
V
Hz / Duty%
40A
400A
/
Display Symbols (See Figure 2)
Figure 2
4
1
2
35
6
8 9
10
12
13
14
16
7
11
15
Measurement Operation
A. Measuring DC/AC Voltage (See Figure 3)
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, although
readings may be obtained.
The DC Voltage ranges are:
400mV, 4V, 40V, 400V and 600V.
The AC Voltage ranges are:
4V, 40V, 400V and 600V.
To measure DC/AC voltage, connect the Meter as follows:
Insert the red test lead into the Hz Duty% terminal and the black test lead
into the terminal.COM
1.
Red Black
When DC/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.
Set the rotary switch to . DC mesaurement mode and auto ranging is a default.
Press to switch to AC measurement mode or press to switch toSELECT
manual ranging measurement mode.
Connect the test leads across with the object being measured.
The measured value shows on the display.
2.
3.
V
REL
Note
B. Measuring Resistance (See Figure 4)
Figure 4
Red Black
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.
The resistance ranges are:
400 , 4k , 40k ,400k ,4M and 40M .
To measure resistance, connect the Meter as follows:
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the
COM terminal.
1.
2.
3.
Set the rotary switch to . Resistance measurement is default to auto range mode,
press to switch to manual ranging measurement mode.
Connect the test leads across with the object being measured.
The measured value shows on the display.
REL
Rotary Switch
Below table indicated for information about the rotary switch positions.
Rotary Switch Position
Power is turned off
AC or DC voltage measurement
Resistance measurement
: Diode test
: Continuity test
Frequency Measurement and Duty
Measurement
AC and DC current measurement range
Function
OFF
V
Hz / Duty%
40A 400A&
/
10
11
12
13
14
15
16
,k ,M
Hz
A
mV, V
TRMS
OL
: Ohm. The unit of resistance.
k : Kilohm. 1x103 or 1000 ohms
M : Megohm. 1x106 or 1,000,000 ohms
The unit of Frequency
Amperes (amps). The unit of current.
Volts. The unit of voltage.
mV: Millivolt. 1x10-3 or 0.001 volts
Indicates negative reading
Indicator for TRMS mode
The input value is too large for the selected range
Number Description
1
2
3
4
5
6
7
8
9
AC
DC
Symbol
Indicator for AC voltage or current
Indicator for DC voltage
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.
The Meter is in the auto range mode in which the Meter
automatically selects the range with the best resolution.
Test of diode
The continuity buzzer is on
Indicator for Duty.
Data hold is active
Indicator for REL mode
%
To obtain a more precise reading, you could remove the objects being tested from
the circuit when measuring.
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.
Note
C. Testing Diodes (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 testing
diodes.
Use the diode test to check diodes, transistors, and
other semiconductor devices. The diode test sends
a current through the semicondutor junction, then
measure the voltage drop across the junction. A
good silicon junction drops between 0.5V and 0.8V.
To test the diode out of a circuit, connect the Meter
as follows:
Insert the red test lead into the Hz Duty% terminal and the black test lead
into the terminal.COM
1.
Figure 5
Red Black
To obtain a more precise reading, you could remove the objects being tested from
the circuit when measuring.
When diode testing has been completed, disconnect the connection between the
testing leads and the circuit under test and remove testing leads from the input
terminals.
Set the rotary switch to . Diode measurement mode is a default or presss
SELECT to select measurement mode.
For forward voltage drop readings on any semiconductor component, place the
red test lead on the component’s anode and place the black test lead on the
component’s cathode.
2.
3.
Note
D. Testing for Continuity (See Figure 6)
Figure 6
Red Black
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
continuity.
To test for continuity, connect the Meter as follows:
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the
COM terminal.
Set the rotary switch to and press SELECT
button to select measurement mode.
The buzzer sounds if the resistance of a circuit
under test is less than 50
1.
2.
3.
The buzzer may or may not sounds if the resistance of a circuit under test is
between 50 to 100
The buzzer does not sound if the resistance of a circuit under test is higher than
100
When continuity testing has been completed, disconnect the connection between
the testing leads and the circuit under test and remove testing leads from the input
terminals.
Note
E. Measuring Frequency (See Figure 7)
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, although
readings may be obtained.
The frequency ranges are:
10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz and
10MHz.
To measure frequency, connect the Meter as follows:
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the
COM terminal.
1.
2.
3.
Figure 7
Red Black
Set the rotary switch to .Hz
Connect the test leads across with the object beingmeasured.
The measured value shows on the display.
Press to subtract a stored value from the present measurement value
and displays a result.
When current measurement has been completed, disconnect the connection
between the conductor under test and the jaw, and remove the conductor away
from the transformer jaw of the Meter.
REL
Note
Sleep Mode
To preserve battery life, the Meter automatically turns off if you do not turn the rotary
switch or press any button for around 15 minutes.
The Meter can be activated by turning the rotary switch or pressing the button based
on ‘ on section.The Effectiveness of Functional Buttons” Pressing to SELECT
activate the Meter will disable the Sleep Mode feature.
The Meter beeps 5 times in about 1 minute before entering Sleep Mode and will
have a 1 long beep just before entering Sleep Mode.
To disable the Sleep Mode function, press and hold SELECT button while turning on
the Meter.
General Specifications
Maximum Voltage between any Terminals and grounding: Refer to different range
input protection voltage.
Display: 3 3/4 digits LCD display, Maximum display 3999
Polarity: Automatically display.
Overloading: Display or OL –OL
Low Battery Indication: Display
Measurement Speed: Updates 3 times/second.
Measuremnet Deviation: The conductor being meaured is not placed in the center
of the jawt during AC/DC current measurement, it will cause extra 1% deviation
based on the stated accuracy.
Drop Test: 1 meter drop test passed.
Max. Jaw Opening: 28mm diameter.
Max. Tested Current Conductor: 26mm diameter.
Electro-Magnetic: When carrying out measurement near the electro-magnetic, it
may cause unstable or wrong reading.
Power: 1 x 9V battery (NEDA1604 or 6F22 or 006P)
Remarks:
Input impedance: 10M
Frequency response: 40Hz~400Hz.
AC Conversion Type:
Average-responsed. Input sinewave and the reading is RMS value.
AC-coupled and TRUE RMS-responsed. Sinewave is input. Non-sine wave must
follow the accuracy below:
Peak factor: 1.4~2.0, add 1.0% on the stated accuracy
Peak factor: 2.0~2.5, add 2.5% on the stated accuracy
Peak factor: 2.5~3.0, add 4.0% on the stated accuracy.
UT203:
UT204:
C. Resistance
Range Resolution Accuracy Overload protection
400.0
4.000k
40.00k
400.0k
4.000M
40.00M
100m
1
10
100
1k
10k
(1.2%+2)
(1%+2)
(1.2%+2)
(1.5%+2)
600Vp
D. Diode
Range Resolution Accuracy Overload protection
1mV Display approximate
forward voltage drop 600Vp
Remark: Open circuit voltage approximate 1.48V.
E. Continuity
Range Resolution Accuracy Overload protection
100m Around 10 ,
the buzzer beeps 600Vp
Remark:
Open circuit voltage approximate 0.45V.
The buzzer may or may not beep when the resistance of a circuit under test is
between 10 ~100
The buzzer will not beep when the resistance of a circuit under test is > 100 .
Input amplitude a:
10Hz～100kHz : 30V rms ≥ a ≥300mV rms
100kHz～10MHz : 30V rms ≥ a ≥600mV rms
G. Duty Cycle
Range Resolution Accuracy Overload protection
0.1% For reference only 600Vp0.1%~99.9%
H. DC Current
Range Resolution Accuracy Overload protection
0.01A
0.1A 400A DC/AC
40.00A
400.0A
(2%+5)
(2%+3)
Warning
The operating temperature must be 0ºC ~40ºC when measuring current.
Remark:
If the reading is positive, the current direction is from bottom to up. See figure 10,
the front case face up while the bottom case face down. Hold the Meter tight, do
not release suddenly. The built-in Hall components are very sensitive not only to
the magnet but also to heat and machines reaction force. Any shock will cause
the changing in reading in the short time. Following the below procedure to
measure AC current will obtain a more precise reading:
1. Hold the Meter tight and press the trigger to open the transformer jaw. Center the
conductor within the transformer jaws, then release the Meter slowly until the
transformer jaw is completely closed. Make sure the conductor to be tested is
placed at the center of the transformer jaw, otherwise it will cause +1.0% deviation
based on the stated accuracy.
I. AC Current
Range Resolution Accuracy Overload protection
0.01A
0.1A 400A DC/AC
40.00A
400.0A
(2.5%+8)
(2.5%+5) 50Hz ~ 60Hz
Frequency Response
Warning
The operating temperature must be 0ºC ~40ºC when measuring current.
Remark:
It may have 10 digits or less unstable or wrong digits, it will not affect measurement
result.
Hold the Meter tight, do not release suddenly. The built-in Hall components are
very sensitive not only to the magnet but also to heat and machines reaction
force. Any shock will cause the changing in reading in the short time. Following
the below procedure to measure AC current will obtain a more precise reading:
Hold the Meter tight and press the lever to open the transformer jaw. Center
the conductor within the transformer jaws, then release the Meter slowly until
the transformer jaw is completely closed. Make sure the conductor to be tested
is placed at the center of the transformer jaw, otherwise it will cause +1.0%
deviation based on the stated accuracy.
1.
UT203:
Average-responsed. Input sinewave and the reading is RMS value.
UT204:
AC-coupled and TRUE RMS-responsed. Sinewave is input. Non-sine wave must
follow the accuracy below:
Peak factor: 1.4~2.0, add 1.0% on the stated accuracy
Peak factor: 2.0~2.5, add 2.5% on the stated accuracy
Peak factor: 2.5~3.0, add 4.0% on the stated accuracy.
Remove the transformer jaw.
Press to display zero.
Repeat Step 1
The obtained reading will be more precise.
2.
3.
4.
5.
AC Conversion Type:
REL
Maintenance
This section provides basic maintenance information including battery replacement
instruction.
Warning
Do not attempt to repair or service your Meter unless you are qualified to do so
and have the relevant calibration, performance test, and service information.
To avoid electrical shock or damage to the Meter, do not get water inside the case.
A. General Service
Periodically wipe the case with a damp cloth and mild detergent. Do not use
abrasives or solvents.
To clean the terminals with cotton bar with detergent, as dirt or moisture in the
terminals can affect readings.
Turn the Meter power off when it is not in use.
Take out the battery when it is not using for a long time.
Do not use or store the Meter in a place of humidity, high temperature, explosive,
inflammable and strong magnetic field.
B. Replacing the Battery (See Figure 10)
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.
Make sure the transformer jaw and the tets leads are
disconected from the circuit being tested before
opening the case bottom.
To replace the battery:
Turn the Meter off and remove all the connections from the input terminals
Turn the Meter’s front case down.
Remove the screw from the battery compartment, and separate the battery
compartment from the case bottom.
Take out the old battery and replace with a new 9V battery (NEDA1604, 6F22 or
006P ) .
Rejoin the case bottom and the battery compartment, and reinstall the screw.
Figure 10
1.
2.
3.
4.
5.
** END **
This operating manual is subject to change without notice.
Screw
When frequency measurement has been completed, disconnect the connection
between the testing leads and the circuit under test, and remove the testing leads
away from the input terminals of the Meter.
Note
F. Measuring Duty Cycle(See Figure 8)
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, although
readings may be obtained.
The duty cycle range is: 0.1%~99.9%.
To measure duty cycle, connect the Meter as follows:
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the
COM terminal.
1.
2.
3.
REL
Set the rotary switch to and press to select Duty Cycle measurementHz
mode.
Connect the test leads across with the object beingmeasured.
The measured value shows on the display.
Figure 8
Red Black
When duty cycle measurement has been completed, disconnect the connection
between the testing leads and the circuit under test, and remove the testing leads
away from the input terminals of the Meter.
Note
Battery Life: typically 150hours (alkaline battery)
Sleep Mode (can be disabled)
Dimensions (H x W x L): 208mm x 76mm x 30mm.
Weight: Approximate 260g (battery included)
The Meter is suitable for indoor use.
Altitude: Operating: 2000m
Storage: 10000m
Safety/ Compliances: IEC 61010 CAT.II 600V, CAT.III 300V “CAT.III300V and
Double Insulation"
Temperature and humidity:
Operating: 0ºC~30ºC ( 85%R.H);
30ºC~40ºC ( 75%R.H);
40ºC~50ºC ( 45%R.H);
Storage: -20ºC~+60ºC ( 85%R.H)
G. Measuring DC/AC Current (See Figure 9)
The current ranges are: 40.00 and 400.0 .
To measure current, do the following:
1.
2.
3. Figure 9
Set the rotary switch to 40 or 400 . DC
measuremnet mode is a default. Press toSELECT
switch between DC and AC measurement mode.
Hold the Meter tight, don’t release. The Hall
components are very senstive not only to the magnet
but also to heat and machines reaction force. Any
shock will cause the changing in reading in the short
time.
Press the trigger to open the transformer jaw.
AA
A A
40A
400A
4. Center the conductor within the transformer jaw, then release the Meter slowly until
the trasnformer jaw is completely closed, Make sure the conductor to be tested
is placed at the center of the transformer jaw, otherwise it will casue deviation.
The Meter can only measure one conductor at a time, measuring more than one
condutor at a time will cause deviation..
Accuracy Specifications
Accuracy: (a% reading + b digits), guarantee for 1 year.
Operating temperature: 23ºC 5ºC
Relative humidity: 85%R.H
Temperature coefficient: 0.1x(specified accuracy)/1ºC
A. DC Voltage
Range Resolution Accuracy Overload protection
400.0mV
4.000V
40.00V
400.0V
600V
0.1mV
1mV
10mV
100mV
1V
(0.8%+3)
(0.8%+1)
(1%+3)
600V DC/AC
Remarks: Input impedance: 10M
B. AC Voltage
Range Resolution Accuracy Overload protection
4.000V
40.00V
400.0V
600V
1mV
10mV
100mV
1V
(1%+5)
(1.2%+5)
600V DC/AC
2. Remove the transformer jaw.
3. Press to display zero.
4. Repeat Step 1
5. The obtained reading will be more precise.
REL
P/N:110401104333X
Specyfikacje produktu
| Marka: | Uni-T |
| Kategoria: | multimetr |
| Model: | UT204 |
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