Datasheet UT203R Specification

Page 1
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 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 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:
Before using the Meter inspect the case. 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. 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.
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)
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 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.
Figure 1
Rotary Switch
Below table indicated for information about the rotary switch positions.
Rotary Switch Position
OFF
V
/
Hz / Duty%
40A 400A
&
Function
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
Functional Buttons
Below table indicated for information about the functional button operations.
Button Description
HOLD
Press HOLD to enter the Hold mode in any mode, the Meter beeps. Press HOLD again to exit the Hold mode, the Meter beeps.
REL
V
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.
A
At range:
Press to enter the REL mode. It subtracts a stored value from the present measurement value and displays a result. At Hz/Duty% range: Press to switch between Hz measurement mode and Duty % measurement mode.
SELECT
Press SELECT button to select the alternate functions marked in
,
blue colour on the Meter’s faceplate including
A A
40 ,
and
400
.
V
,
After the Meter entering Sleep Mode, press and hold SELECT to turn the Meter on, it will disable the Sleep Mode feature.
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
SELECT
Functional Buttons
REL
HOLD
V
N/A
/
Hz / Duty%
N/A
N/A
40A
400A
Display Symbols (See Figure 2)
4
15
3
2
14
1
7
89
16
5
6
10
11 12 13
Figure 2
Number Description
1 2 3
Symbol
AC DC
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.
4
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
: Ohm. The unit of resistance.
k
: Kilohm. 1x103or 1000 ohms
M
: Megohm. 1x106or 1,000,000 ohms
Hz
The unit of Frequency
A
Amperes (amps). The unit of current. Volts. The unit of voltage.
10
11 12 13
5 6 7 8 9
,k ,M
mV, V
mV: Millivolt. 1x10-3or 0.001 volts 14 15 16
TRMS
OL
Indicates negative reading
Indicator for TRMS mode
The input value is too large for the selected range
Measurement Operation
A. Measuring DC/AC 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, 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
1.
into the COM terminal.
2.
Set the rotary switch to . DC mesaurement mode and auto ranging is a default.
V
Press SELECT to switch to AC measurement mode or press to switch to manual ranging measurement mode. Connect the test leads across with the object being measured.
3. The measured value shows on the display.
Note
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.
B. Measuring Resistance (See Figure 4)
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:
1.
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the COM terminal.
2.
Set the rotary switch to . Resistance measurement is default to auto range mode, press to switch to manual ranging measurement mode.
3.
REL
Connect the test leads across with the object being measured. The measured value shows on the display.
Note
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.
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
1.
into the COM terminal.
2.
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
3. red test lead on the component’s anode and place the black test lead on the component’s cathode.
Note
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.
Red Black
Figure 3
REL
Red Black
Figure 4
Red Black
Figure 5
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P/N:110401104333X
D. Testing for Continuity (See Figure 6)
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:
1.
Insert the red test lead into the Hz Duty% terminal and the black test lead into the
Red Black
COM terminal.
2.
Set the rotary switch to and press SELECT button to select measurement mode. The buzzer sounds if the resistance of a circuit
3.
Figure 6
under test is less than 50 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
Note
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.
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.
Red Black
To measure frequency, connect the Meter as follows:
1.
Insert the red test lead into the Hz Duty%
terminal and the black test lead into the
COM terminal.
2.
Set the rotary switch to Hz.
3.
Connect the test leads across with the object beingmeasured.
Figure 7
The measured value shows on the display.
Note
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.
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%.
Red Black
To measure duty cycle, connect the Meter as follows:
Insert the red test lead into the Hz Duty%
1.
terminal and the black test lead into the
COM terminal.
Set the rotary switch to Hz and press to select Duty Cycle measurement
2.
REL
Figure 8
mode. Connect the test leads across with the object beingmeasured.
3. The measured value shows on the display.
Note
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.
G. Measuring DC/AC Current (See Figure 9)
and 400.0 .
The current ranges are: 40.00
A
To measure current, do the following:
Set the rotary switch to 40 or 400 . DC
1.
A A
A
40A
400A
measuremnet mode is a default. Press SELECT to switch between DC and AC measurement mode. Hold the Meter tight, don’t release. The Hall
2. 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.
3.
Figure 9
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..
Note
Press to subtract a stored value from the present measurement value
REL
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.
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 ‘The Effectiveness of Functional Buttons” on section. Pressing SELECT to 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 OL or –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)
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 (
30ºC~40ºC ( 40ºC~50ºC (
Storage: -20ºC~+60ºC (
85%R.H); 75%R.H); 45%R.H);
85%R.H)
Accuracy Specifications
Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23ºC Relative humidity:
85%R.H
Temperature coefficient: 0.1x(specified accuracy)/1ºC
A. DC Voltage
Range Resolution Accuracy Overload protection
400.0mV
0.1mV
4.000V
40.00V
400.0V
10mV
100mV
600V
Remarks: Input impedance: 10M
B. AC Voltage
Range Resolution Accuracy Overload protection
4.000V
40.00V
400.0V
1mV
10mV
100mV
600V
1mV
1V
1V
5ºC
(0.8%+3)
(0.8%+1)
(1%+3)
(1%+5)
(1.2%+5)
600V DC/AC
600V DC/AC
Remarks:
Input impedance: 10M Frequency response: 40Hz~400Hz.
AC Conversion Type:
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.
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N+]9UPVDP9UPV 100kHz0+]9UPVDP9UPV
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
40.00A
400.0A
0.01A
0.1A
(2%+5)
(2%+3)
400A DC/AC
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.
2. Remove the transformer jaw.
3. Press to display zero.
REL
4. Repeat Step 1
5. The obtained reading will be more precise.
I. AC Current
Range Resolution Accuracy Overload protection
40.00A
400.0A
0.01A
0.1A
(2.5%+8) (2.5%+5)
Frequency Response
50Hz ~ 60Hz
400A DC/AC
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
1. 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.
2.
Remove the transformer jaw.
3.
Press to display zero.
4.
5.
REL
Repeat Step 1 The obtained reading will be more precise.
AC Conversion Type:
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.
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
1. Turn the Meter’s front case down.
2. Remove the screw from the battery compartment, and separate the battery
3. compartment from the case bottom. Take out the old battery and replace with a new 9V battery (NEDA1604, 6F22 or
4. 0 06 P ) . Rejoin the case bottom and the battery compartment, and reinstall the screw.
5.
This operating manual is subject to change without notice.
** END **
Screw
Figure 10
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