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UNI-T UT205A, Operating Manual

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UNI-T UT205A Operating Manual Download Page 28

Operation of Hold Mode

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.

Warning

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.

Model UT205A/206A: OPERATING MANUAL

28

Summary of Contents for UT205A

Page 1: ...rical Symbols The Meter Structure Functional Buttons Display Symbols Measurement Operation A AC Current Measurement B DC Voltage Measurement C AC Voltage Measurement D Measuring Resistance E Testing for Diodes and Continuity F Frequency and Duty Cycle Measurement Duty Cycle UT205A only G Temperature Measurement Model UT206A only Model UT205A 206A OPERATING MANUAL 1 ...

Page 2: ...CT Button Turning on the Display Backlight Sleep Mode General Specifications Accuracy Specifications A AC Current B DC Voltage C AC Voltage D Resistance E Diode and Continuity Test F Frequency G Duty Cycle Model UT205A only H Temperature Model UT206A only Maintenance A General Service B Replacing the Battery Model UT205A 206A OPERATING MANUAL 2 ...

Page 3: ...carefully before using the Meter The Model UT205A and UT206A hereafter referred to as the Meter are a low consumption AC clamp meter with stabilize functions safety operations and reliable performance In addition to the AC current feature it can also measure AC DC voltages resistance diode continuity frequency and temperature Except where noted the descriptions and instructions in this Operating M...

Page 4: ...rt Item Description Qty 1 2 3 4 5 In the event you find any missing or damage please contact your dealer immediately Operating Manual Test Lead Model UT206A Point Contact Temperature Probe 9V Battery NEDA 1604 6F22 or 0006P installed inside the Meter Vinyl Bag 1 piece 1 pair 1 piece 1 piece 1 piece Model UT205A 206A OPERATING MANUAL 4 ...

Page 5: ...d Radio Frequency Electromagnetic 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 actions that pose hazards to the user or may damage the Meter or the equipment under test A Note identifie...

Page 6: ... 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 positi...

Page 7: ...njury When servicing the Meter use only the same model number or identical electrical specifications replacement parts 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 fro...

Page 8: ... or store the Meter in an environment of high temperature humidity explosive inflammable and strong magnetic field The performance of the Meter may deteriorate after dampened Model UT205A 206A OPERATING MANUAL 8 ...

Page 9: ...rent DC Direct Current AC or DC Grounding Double Insulated Fuse Deficiency of Built In Battery Continuity Test Diode Conforms to Standards of European Union Warning Refer to the Operating Manual High Voltage Terminal Model UT205A 206A OPERATING MANUAL 9 ...

Page 10: ... to pick up the AC current flowing through the conductor Rotary Switch LCD Display Function Buttons Input Terminals Trigger Press the lever to open the transformer jaws When the pressure on the lever is released the jaws will close 1 2 3 4 5 6 Model UT205A 206A OPERATING MANUAL 10 ...

Page 11: ...fficient light or poor vision please use Display Backlight function Hz UT205A only 1 At ACV or DCV range Press the button to step through ACV or DCV frequency and duty cycle measurement 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 Model UT...

Page 12: ...ycle measurement mode REL UT206A only Press REL to enter and exit the REL mode in any measuring mode except in frequency and duty cycle the Meter beeps UT206A Switches between AC voltage and DC Voltage measurement and continuity and diode measurement the Meter beeps UT205A Switches between continuity and diode measurement the Meter beeps SELECT Hz UT205A only Model UT205A 206A OPERATING MANUAL 12 ...

Page 13: ...de in any mode 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 switch off and turn on the Meter again SELECT Model UT205A 206A OPERATING MANUAL 13 ...

Page 14: ...Display Symbols see figure 2 figure 2 Model UT205A 206A OPERATING MANUAL 14 ...

Page 15: ...ersonal injury replace the battery as soon as the battery indicator appears Percent Used for duty cycle measurements A Indicator for AC current Hertz The unit of frequency Kilohertz 1x 103 or 1000 hertz Megahertz 1x106 or 1 000 000 hertz Hz kHz MHz Ohm The unit of resistance kilohm 1 x 103 or 1000 ohms Megaohm 1x106 or 1 000 000 ohms k M 6 7 Model UT205A 206A OPERATING MANUAL 15 ...

Page 16: ...ntinuity buzzer is on Test of diode Centigrade The unit of temperature The relative value mode is on to display the stored value minus the present Volts The unit of voltage Millivolt 1 x 10 3 or 0 001 volts Model UT205A 206A OPERATING MANUAL 16 o C ...

Page 17: ...ot 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 Model UT205A 206A OPERATING MAN...

Page 18: ...e transformer jaw The measured value shows on the display it is a effective value of sine wave mean value response Note 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 To measure current do the following Model UT205A 206A OPERATING MANUAL 18 ...

Page 19: ...lthough readings may be obtained To measure DC voltage connect the Meter as follows 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 on the display Model UT205A 206A OPERATING MANUAL 19 ...

Page 20: ...pleted 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 AC Voltage measurement is an auto ranging measurement mode Follow the same procedure as the DC Voltage Measurement mode When you using UT206A to carry out the measurement use SELECT button to switch between ACV and DCV Note C AC Voltage ...

Page 21: ... 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 3 Connect the test leads across with the object being measured The measured value shows on the display Note The test leads can add 0 1 to 0 3 of error to resistance measurement Red Black figure 5 Model UT205A 206A OPERATING MANUAL...

Page 22: ...e 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 Model UT205A 206A OPERATIN...

Page 23: ...odes and continuity connect the Meter as below Red Black 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 b 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 The measured value shows on the dis...

Page 24: ... 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 bet...

Page 25: ...d into the COM terminal b Set the rotary switch to Hz press Hz button to switch between Hz and Duty cycle measurement mode c Or set the rotary to ACV or DCV range then To measure frequency and duty cycle connect the Meter as follows press Hz button to switch betweenACV or DCV Hz and Duty cycle measurement mode But the accuracy will have a little difference based on the input frequency and wave Red...

Page 26: ...M terminal b Set the rotary switch to Hz c Connect the test leads across with the object being measured 2 UT206A 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 The measured frequency value shows on the display Note Model UT205A 206A OP...

Page 27: ...rature connect the Meter as follows When there is no temperature probe inserted into the terminals the LCD displays OL The included point contact temperature probe can only Note be used up to 250 o 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 testing leads and th...

Page 28: ...ut power The Hold mode will not capture unstable or noisy readings Warning 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 Model UT205A 206A OPERATING MANUAL 28 ...

Page 29: ...nt 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 measurements done after will be automatically subtract this stored value Press REL again to exit REL mode and return to common measurement mo...

Page 30: ...Backlight function Warning 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 Sleep Mode The Meter can be activated by turning the rotary switch or...

Page 31: ...9 3 3 4 digits Overload Display OL Range Auto Polarity Display Negative display Measurement Speed Updates 3 times second Temperature Operating 0 o C to 40 o C 32 o F to 104 o F Storage 10 o C to 50 o C 14 o F to 122 o F Relative Humidity 75 0 o C to 40 o C 70 10 to 50 o C Altitude Operating 2000 m Storage 10000 m General Specifications Model UT205A 206A OPERATING MANUAL 31 ...

Page 32: ...Approximate 350g battery included Safety Compliances IEC61010 CAT II 600V CAT III 300V overvoltage and double insulation standard Certifications Auto power off Accuracy a reading b digits guarantee for 1 year Operating temperature 23 o C 5 o C Relative humidity 75 Accuracy Specifications Model UT205A 206A OPERATING MANUAL 32 ...

Page 33: ...esponse 50Hz 60Hz Display effective value of sine wave mean value response 800A 3 5 B DC Voltage 400mV 4V 40V 400V 600V 100 V 1mV 10mV 100mV 1V 0 8 3 0 8 1 1 3 Range 600V DC 600V AC Input impedance around 10M Resolution Accuracy Overload Protection Remarks Model UT205A 206A OPERATING MANUAL 33 ...

Page 34: ...rotection Remarks 1mV 10mV 100mV 1V 1 5 5 Input impedance around 10M Displays effective value of sine wave mean value response Frequency response 40Hz 400Hz D Resistance Range Resolution Accuracy Overload Protection 400 4k 0 1 1 1 2 500V DC or AC 1 2 5 Model UT205A 206A OPERATING MANUAL 34 ...

Page 35: ...10 100 1k 10k 500V DC or AC 1 2 1 2 2 1 5 2 E Diode and Continuity Test Function Range Resolution Overload Remarks Diode Continuity 1mV 0 1 500V DC or AC Displays the nearest value of forward voltage drop Buzzer beeps when 100 Model UT205A 206A OPERATING MANUAL 35 ...

Page 36: ...s a 30V rms 1MHz 600mV rms a 5V rms G Duty Cycle Model UT205A only Range Resolution Accuracy Overload Protection 0 1 99 9 0 1 For reference only 500V DC or AC H Temperature Model UT206A only 40 o C 0 o C 1 o C 400 o C 401 o C 1000 o C Range Resolution Accuracy Overload Protection 1 o C 4 4 2 8 3 10 500V DC or AC Model UT205A 206A OPERATING MANUAL 36 ...

Page 37: ... 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...

Page 38: ...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 the circuit being tested before opening the case bottom Make sure the test leads are removed from the input terminals Screw Model UT205A 206A OPERATING MANUAL 38 ...

Page 39: ...w from the battery compartment and separate the battery 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 and or a 1 5V battery AAA 5 Rejoin the case bottom and battery compartment and reinstall the screw END Model UT205A 206A OPERATING MANUAL 39 ...

Page 40: ...ong Fang Industrial Development District Hu Men Town Dongguan City Guang Dong Province China Postal Code 523 925 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com Model UT205A 206A OPERATING MANUAL 40 ...

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