UT202A Operating Manual Contents Title Overview Unpacking Inspection Safety Information Rules for Safe Operation International Electrical Symbols The Meter Structure Functional Buttons and auto power off Display Symbols Measurement Operation A. DC Voltage Measurement B. AC Voltage Measurement C. Measuring Resistance D. Testing Diodes E. Testing for Continuity F. AC Current Measurement Specifications A. General Specifications B. Environmental Restriction Accuracy Specifications A. AC Voltage B.
UT202A Operating Manual 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” and “Rules for Safe Operation” carefully before using the Meter.
UT202A Operating Manual Safety Information This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CATII 600V, CAT III 300V) and double insulation. CATII: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient 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.
UT202A Operating Manual Rules for Safe Operation 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.
UT202A Operating Manual 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 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.
UT202A Operating Manual 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.
UT202A Operating Manual The Meter Structure (see figure 1) (figure 1) 1. 2. 3. 4. 5. 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. 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.
UT202A Operating Manual 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 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.
UT202A Operating Manual every rotary switch positions.
UT202A Operating Manual Display Symbols (see figure 2) (figure 2) Number Meaning 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.
UT202A Operating Manual Measurement Operation A. DC Voltage Measurement (see figure 3) Warning To avoid harms to you or damages 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 VΩ 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.
UT202A Operating Manual 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. AC Voltage Measurement (see figure 4) Warning To avoid harms to you or damages 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.
UT202A Operating Manual 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 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.
UT202A Operating Manual (figure 5) D. Testing Diodes (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 diodes. To test the diode out of a circuit, connect the Meter as follows: 1. Insert the red test lead into the VΩ terminal and the black test lead into the COM terminal. 2. Set the rotary switch to Ω and press SELECT button to select measurement mode. 3.
UT202A Operating Manual Note: ● To remove the objects being tested from the circuit when measuring can obtain a more accurate result. ● 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. (figure 6) E.
UT202A Operating Manual 2. Set the rotary switch to Ω and press SELECT button to select measurement mode. 3. The buzzer sounds if the resistance of a circuit under test is less than 10Ω. 4. The buzzer may or may not sounds if the resistance of a circuit under test is more than 10Ω. 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.
UT202A Operating Manual F. AC Current Measurement (see figure 8) Warning To avoid electric shock, never measure current while the test leads are inserted into the input terminals and disconnect test leads and tested circuit connection. Never attempt an in-circuit current measuremnet where the open-circuit voltage between the circuit and the ground is greater than 600V User proper function, and range for the measurement. To measure current, do the following: 1. Set the rotary switch to 20A ,200 A or 600 A .
UT202A Operating Manual (figure 8) 18
UT202A Operating Manual Specifications A. General Specifications ● Display: 3 1/2 digits LCD display, Maximum display 1999 ● Auto Polarity Display ● Overloading: Display OL or –OL ● Battery Deficiency: Display ● Measurement Speed: Updates 3 times/second. ● Measuremnet Deviation: When the conductor being meaured is not placed in a correct position during AC current measurement, it will cause ±3% reading deviation. ● Drop Test: 1 meter drop test passed ● Max. Jaw Size: 28mm diameter ● Projected Max.
UT202A Operating Manual Accurate Specifications Accuracy: ±(a% reading + b digits), guarantee for 1 year. Operating temperature: 23℃±5℃ Relative humidity: ≤75%R.H Temperature coefficient: 0.1×(specified accuracy) /1℃ A. AC Voltage: Auto ranging Range Resolution Accuracy 2.000V 1mV 20.00V 10mV ±(1.2%+5) 200.0V 100mV 600V 1V ±(1.5%+5) Remarks: ● Overload protection:600V rms ● Input impedance: 10MΩ // <100pF ● Displays effective value of sine wave (mean value response). ● Frequency response: 40Hz~1kHz. B.
UT202A Operating Manual C. Resistance: Auto ranging Range Resolution Accuracy 200.0Ω 100mΩ ±(1.2%+2) 2.000kΩ 1Ω 20.00kΩ 10Ω ±(1%+2) 200.0kΩ 100Ω 2.000MΩ 1kΩ ±(1.2%+2) 20.00MΩ 10kΩ ±(1.5%+2) Remark: ● Overload protection: 600Vp D. Continuity Test Range Resolution 100mΩ Accuracy Around ≤10Ω,the buzzer beeps. Remark: ● Overload Protection: 600Vp ● Open circuit voltage approximate 0.45V. ● The buzzer may or may not beeps when the resistance of a circuit under test is more than 10Ω. E.
UT202A Operating Manual F. AC Current: Auto ranging Range Resolution Accuracy 20.00A 0.01A ±(2.0%+5) 200.0A 0.1A ±(1.5%+5) 600A 1A ±(2.0%+8) Remarks: ● Overload protection: 600A rms ● Frequency Response: 50Hz~60Hz ● Displays effective value of sine wave (mean value response). ● To adjust reading in accordance with effective value.
UT202A Operating Manual 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.
UT202A Operating Manual 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:. 1. Turn the Meter off and remove all the connections from the input terminals. 2. Turn the Meter’s case top down. 3. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom. 4.
