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 UT205A and UT206A are AC clamp multimeters (hereafter referred to as "the Meter") with remarkable features: versatile functions, stable operation, low power consumption and ergonomic structural design. They can measure AC/DC voltage, AC current, resistance, diode, continuity, frequency and temperature(UT206A),etc. Except where noted, the descriptions and instructions in this Operating Manual apply to both the Model UT205A /UT206A position and no any changeover of range shall be made when measurement is conducted to prevent damage of the Meter. When the Meter is working at an effective voltage over 60V in DC or 42V 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. When using the test leads, keep your fingers behind the finger guards. Disconnect circuit power and discharge all highvoltage capacitors before testing. To avoid harm to you or damage to the Meter from electric shock, please do not attempt to apply higher than 600V between the terminals and grounding. 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 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. 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. Do not use or store the Meter in an environment of high temperat ure, humidity,explosive, inflamm -able and strong magnetic field. The performance of the Meter may deteriorate after dampened International Electrical Symbols 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 Operating Manual 1 pc 2 3 Test Leads Model UT206A: Point Contact T emperature Probe 1 pc Fuse Low Battery Indication Continuity Test 5 Vinyl Bag Diode 5 % A Percent: Used for duty cycle measurements. ,k , Ohm. The unit of resistance. kilohm. 1 x 10 3 or 1000 ohms. Megaohm. 1x10 6 or 1,000,000 ohms. Indicator for AC current Hertz. The unit of frequency. Hz, kHz, Kilohertz. 1x 10 3 or 1000 hertz. 6 MHz Megahertz. 1x10 or 1,000,000 hertz. The continuity buzzer is on. Test of diode 12 Conforms to Standards of European Union C Safety Information Risk of Electric Shock The Meter Structure (See Figure 1) 1 2 3 6 V, mV Centigrade. The unit of temperature. The relative value mode is on to display the stored value minus the present Volts. The unit of voltage. -3 Millivolt. 1 x 10 or 0.001 volts. Measurement Operation Warning. Refer to the Operating Manual 1. Transformer Jaw designed to pick up the AC current flowing through the conductor. 2. Rotary Switch. 3. LCD Display. 4. Function Buttons 5. Input Terminals 6. Lever. Press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close. o 11 In the event you find any missing or damaged part, please contact your dealer immediately. Warning To avoid possible electric shock or personal injury, and to avoid possible damageto the Meter or to the equipment under test, adhere to the following rules: Check for the lever is in good condition when measuring AC current. Must center the wire (conductor) within the trans -former jaw. 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. The rotary switch should be placed in the right 4 10 9V Battery (NEDA 1604, 6F22 or 0006P) 1 pc (installed inside the Meter) 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 voltage overvoltages than CAT. III CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV. Under the influence of Radiated, Radio-Frequency Electro -magnetic Field phenomenon,the captioned model may malfunction and can self-recover after the test. 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 acti -ons 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. Number Symbol Description 1 Data hold is active. 2 AC Indicator for AC Voltage. The battery is low. Warning: To avoid false readings, which 3 could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears. 9 4 1 pc Figure 2 8 Grounding 4 5 Make sure the Sleep Mode is not on if you found there is no display on the LCD after turning on the Meter. Make sure the Low Battery Display is not on; otherwise false readings may be provided. Pay extra attention to the symbol which is located besides the input terminals of the Meter before carrying out measeurement. Make sure you are in the proper measurement range before carrying out measurement. A. Measuring AC Current (See Figure 3) Warning The measurement value obtained is wrong if testing two or more current conductors at the same time. Figure 1 Functional Buttons Below table indicated for information about the functional button operations. Button Description Turn the display backlight on and off.In order to avoid the hazard arising from mistaken readings in insufficient light or poor vision, please use Display Backlight function. Hz% (UT205A only) REL only) (UT206A 1. At ACV or DCV range Press the button to switch into Hz or duty cycle if under ACV or DCV range. The Meters enters the manual ranging measurement mode after pressing the button at the ACV or DCV measurement range. Turn the rotary switch or switch off the Meter to return to auto ranging measurement mode.The Meter is at the DCV – 400mV range or ACV-4V range after returning from the Hz% cycle measurement mode. 2. At Hz range Press the button to step through frequency and duty cycle measurem -ent mode. Press REL to enter and exit the REL mode in any measuring mode except in frequency and duty cycle,the Meter beeps. 1. Insert the red test lead into the V terminal and the black test lead into the COM terminal. 2. Set the rotary switch to DC voltage measurement mode. Red Black 3. Connect the test leads across with the object being measured. The measured value shows Figure 4 on the display. Note In each range, the Meter has an input impedance of 10M .This loading effect can cause measurement errors in high impedance circuits. If the circuit imped -ance is less than or equal to 10k , the error is negligible (0.1% or less). When DC voltage 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. C. Measuring AC Voltage (See Figure 4) M AC or DC Press HOLD to enter and exit the Hold mode in any mode, the Meter beeps. Display Symbols (See Figure 2) 7 DC (Direct Current) Double Insulated HOLD 6 AC (Alternating Current) 1 pair SELECT UT206A: Switches between AC voltage and DC Voltage measure -ment, and continuity and diode measurement; the Meter beeps. UT205A: Switches between continuity and diode measurement; the Meter beeps. When it is under sleep mode, press to activate the Meter at the effective measurement range,e.g. continuity buzzer. Auto power off feature will be disabled until Switching off and turning on the Meter again. Figure 3 measure RMS value B. Measuring DC Voltage (See Figure 4) Warning To avoid harm to you or damage to the Meter from electric shock, please do not attempt to measure voltages higher than 600V although readings may be obtained. To measure DC voltage, connect the Meter as follows: AC Voltage measurement is an auto ranging measure -ment mode. Note: Follow the same procedure as the DC Voltage Meas -urement mode. When you using UT206A to carry out the measurement, use SELECT button to switch between ACV and DCV. D. Measuring Resistance (See Figure 5) Warning To avoid damages 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 andthe black test lead into the COM terminal. 2. Set the rotary switch to . 3. Connect the test leads across with the object Red Black being measured. The measured value shows on the display. Figure 5 Note The test leads can add 0.1 to 0.3 of error to resistance measurement.To obtain precision readings in low-resistance measurement under the range of 400.0 , short-circuit the input terminals beforehand, using the relative measurement function button REL to automatically subtract the value measured when the testing leads are short-circuited from the reading. For high-resistance measurement (>1M ), it is normal to take several seconds to obtain a stable reading. When resistance 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. E. Testing for Diodes and Continuity (See Figure 6) Warning To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before testing for continuity. To test for diodes and continuity, connect the Meter as below: 1. Insert the red test lead into the terminal and the black test lead into the COM terminal. 2. For diode test a. Set the rotary switch to . Red Black b. For forward voltage drop readings on any semicon Figure 6 -ductor component, place the red test lead on the component’s anode and place the black test lead on the component’s cathode. The measured value shows on the display. 3. For continuity test: a. Press SELECT to switch between Diode and Contin -uity test. b. Connect the test lead to the two end of the circuit under test. c. The buzzer sounds if the resistance of a circuit under test is less than 100 . Note In a circuit, a good diode should still produce a P/N: 110401104276X MAY.2018 REV. 6 forward voltage drop reading of 0.5V to 0.8V; however, the reverse-voltage drop reading can vary depending on the resistance of other pathways between the probe tips. Connect the test leads to the proper terminals as said above to avoid error display.The LCD will display OL indicating diode being tested is open or polarity is reversed. The unit of diode is Volt (V), displaying the forward voltage drop readings. When diode and continuity testing 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 Frequency and Duty Cycle (See Figure 7) UT205A is designed with frequency and duty cycle functions, but only frequency for UT206A. To measure frequency and duty cycle, connect the Meter as follows: 1. UT205A a. Insert the red test lead into the Hz% terminal and the black test lead into the COM terminal. Hz% b. Set the rotary switch to Hz ; Red Black press Hz% button to switch between Hz and Duty cycle measurement mode. Figure 7 c. Or set the rotary to ACV or DCV range, then press Hz% button to switch into Hz and Duty cycle measurement mode. But the accuracy will have a little difference based on the input frequency and wave. d. Connect the test leads across with the object being measured.The measured frequency value or duty cycle value shows on the display. 2. UT206A a. Insert the red test lead into the Hz terminal and the black test lead into the COM terminal. b. Set the rotary switch to Hz. c. Connect the test leads across with the object being measured. The measured frequency value shows on the display. Note When frequency and 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 Temperature (UT206A Only, See Figure 8) mode: To enter or exit REL Use rotary switch to select the measurement function before selecting REL . If measurement function changes manually after REL is selected, the Meter exits the REL mode. Press REL to enter REL mode, auto ranging turns off, and the present measurement range is locked and stored as the stored value. All the measure -ments done after will be automatically subtract this stored value. Press REL again to exit REL mode and return to common measurement mode.If you want to enter the auto ranging measurement mode or other ranges, please turn the rotary switch or power off the Meter and start again. The SELECT Button It uses for selecting the required measurement function when there is more than one function at one position of the rotary switch. Turning on the Display Backlight Warning In order to avoid the hazard arising from mistaken readings in insufficient light or poor vision, please use Display Backlight function. Press and hold button for over 2 seconds to turn the Display Backlight on. Press button again to turn the Display Backlight off, otherwise it will stay on continuously. 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 effective button, it will return to working mode. General Specifications Maximum Voltage between any Terminals and Grounding: 600V rms or 600V DC. Maximum Current Measurement: 1000A. of Transformer Jaw: Maximum Jaw Opening: 40mm. Maximum Display: Digital: 3999 Overload Display: OL Range: Auto Polarity Display: Negative display: “-“ Measurement Speed: Updates 3 times/second. o o o o Temperature: Operating: 0 C to +40 C (32 F to+104 F). o o o o Storage: -10 C to +50 C (14 F to +122 F). o o Relative Humidity: 75% @ 0 C to 40 C ; o 70% @ -10 to 50 C . Range Resolution Operation of Hold Mode 400A Warning To avoid possibility of electric shock, do not use Hold mode to determine if circuits are without power. The Hold mode will not capture unstable or noisy readings. The Hold mode is applicable to all measurement functions. Press HOLD to enter Hold mode; the Meter beeps. Press HOLD again or turn the rotary switch to exit Hold mode; the Meter beeps. In Hold mode, is displayed. The Use of Relative Value Mode (UT206A only) The REL mode applies to all measurement functions except frequency and duty cycle. It subtracts a stored value from the present measurement value and displays the result. For instance, if the stored value is 20.0V and the present measurement value is 22.0V, the reading would be 2.0V. If a new measurement value is equal to the stored value then display 0.0V. Range Resolution Accuracy 4V 1mV 40V 10mV 400V 100mV 600V 1V (1.2%+5) Altitude: Operating: 2000 m. Storage: 10000 m. Battery Type: One piece of 9V (NEDA1604 or 6F22 or 006P). Low Battery Indication：Display Dimensions (HxWxL): 236mm x 97mm x 40mm Weight: Approximate 350g (battery included). Safety/Compliances: IEC61010 CAT. II 600V / CAT III 300V and Double Insulation. Certifications: Overload Protection 600V DC 600V AC (1.5%+5) Remarks Input impedance around 10M . Displays RMS value of sine wave (mean value response). Frequency response: 40Hz ~ 400Hz. D. Resistance Range Resolution Accuracy 400 0.1 (1.2%+2) 4k 1 (1%+2) 40k 10 400k 100 4M 1k (1.2%+2) 40M 10k (1.5%+2) Overload Protection 500V DC or AC (1%+2) 500V DC or AC E. Diode and Continuity Test Function Range Resolution Diode Overload Remarks Displays the nearest value of forward voltage drop 1mV 500V DC or AC Buzzer beeps when 100 0.1 Continuity Sleep Mode To measure temperature, connect the Meter as follows: 1. Insert the red temperature o probe into the C terminal and the black temperature probe into the COM terminal. o 2. Set the rotary switch to C. 3. Place the temperature probe to the object being Black Red measured. The measured value shows on the display. . Note Figure 8 When there is no temperature probe inserted into the terminals, the LCD displays OL. The included point contact temperature probe can only o be used up to 250 C.For any measurement higher than that, it is necessary to use another type of temperature probe. When temperature measurement has been completed, disconnect the connection between the temperature probe and measured object, and remove the tempera -ture probe from the input terminals of the Meter. C. AC Voltage F. Frequency (auto-ranging) Range Resolution Accuracy Overload Protection 10Hz10MHz Min 0.001Hz (0.1%+3) 500V DC or VAC Remarks Amplitude a: 1MHz: 300mV rms a 30V rms; 1MHz: 600mV rms a 5V rms G. Duty Cycle (Model UT205A only) Range Resolution 0.1%-99.9% 0.1% Accuracy Overload Protection For reference only 500V DC or AC H. Temperature (Model UT206A only) Range o Resolution o o o 1 C~400 C o o 401 C~1000 C Accuracy Overload Protection (4%+4) -40 C~0 C o 1C (2%+8) 500V DC or AC (3%+10) 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 calibr -ation, performance test, and service information.To avoid electrical shock or damage to the Meter, do you 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 to OFF position 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. Accuracy Specifications B. Replacing the Battery (See Figure 9) A. AC Current 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 test leads are disconnected from Screw the circuit being tested before opening the case bottom. Make sure the test leads are removed from the input terminals. Accuracy: (a% reading + b digits), guarantee for 1 year. o o Operating temperature: 23 C 5 C . Relative humidity: 75%. Accuracy 0.1A (1.5%+5) 800A 1000A 1A (2%+5) >800A (3%+5) Remarks Frequency resp -onse 50Hz~ 60Hz.Display RMS value of sine wave(mean value response). B. DC Voltage Range Resolution 400mV 100 V 4V 1mV 40V 10mV 400V 100mV 600V 1V Accuracy Overload Protection (0.8%+3) Warning To replace the battery: 1. Turn the rotary switch of the Meter to OFF position and remove all the connections from the terminals. 2. Remove the screw from the battery compartment, and separate the battery Figure 9 compartment from the case bottom. 3. Remove the battery from the battery compartment. 4. Replace the battery with a new 9V battery (NEDA1604, 6F22 or 006P) . Remarks 5. Rejoin the case bottom and battery compartment, and reinstall the screw. ** END ** (0.8%+1) (1%+3) 600V DC 600V AC Input impedance: around 10M .
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