UNI-T UT201, Operating Manual

Page 1: ... Voltage Measurement B AC Voltage Measurement C Measuring Resistance D Testing Diodes E Testing for Continuity F Temperature Measurement G AC Current Measurement Sleep Mode Specifications A General Specifications B Environmental Restriction Accuracy Specifications A AC Voltage B DC Voltage C Resistance D Continuity Test E Diode Test F Temperature G AC Current Maintenance A General Service B Replac...

Page 2: ...Model UT201 202 OPERATING MANUAL 2 ...

Page 3: ...efully before using the Meter Digital Multimeter Model UT201 202 hereafter referred to as the Meter are 3 1 2 digits with steady operations fashionable structure and highly reliable measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core and has full range overload protection The Meter can measure AC DC Voltage AC Current Resistance Te...

Page 4: ...Open the package case and take out the Meter Check the following items carefully to see any missing or damaged part Point Contact Temperature Probe UT202 only 4 1 5V Battery AAA 2 pieces Model UT201 202 OPERATING MANUAL 4 Item 1 2 3 Description English Operating Manual Test Lead Qty 1 piece 1 pair 1 piece ...

Page 5: ...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 International electrical sym...

Page 6: ... by step until a satisfactory reading is obtained l Whenmeasurementhasbeencompleted 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 l The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prev...

Page 7: ...ith a low battery the Meter might produce false readings that can lead to electric shock and personal injury l When servicing the Meter use only the same model number or identical electrical specifications replacement parts l The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident l Soft cloth and mild detergent should be used to clean the surfa...

Page 8: ...Current DC Direct Current AC or DC Grounding Double Insulated Continuity Test Diode Fuse Warning Refer to the Operating Manual Conforms to Standards of European Union Capacitance Test Deficiency of Built In Battery Model UT201 202 OPERATING MANUAL 8 ...

Page 9: ...ss 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 Model UT201 202 OPERATING MANUAL ...

Page 10: ...positions Rotary Switch Position Function AC DC voltage measurement Diode test Resistance measurement Ω Power is turned off OFF Continuity test Ω Temperature measurement UT202 only o C o F AC current measurement range from 0 001A to 400 0A A Model UT201 202 OPERATING MANUAL 10 ...

Page 11: ...ent l Press HOLD to enter and exit the Hold mode in any mode the Meter beeps l Press and hold HOLD button while turning on the Meter to display full icons HOLD MAX Press MAX to start recording and updating of maximum values SELECT Press SELECT button to switch between and o C o F Ω Model UT201 202 OPERATING MANUAL 11 ...

Page 12: ...ional buttons can be used on which rotary switch positions Model UT201 Rotary Switch Positions Functional Buttons SELECT MAX HOLD V V N A N A Ω N A N A N A A A 2 20A N A 200 400A N A Model UT202 Rotary Switch Positions Functional Buttons SELECT MAX HOLD V V N A N A Ω N A N A A A 2 20A N A 200 400A N A o F o C K Type Model UT201 202 OPERATING MANUAL 12 ...

Page 13: ...ch the Meter automatically selects the range with the best resolution 5 Test of diode 6 The continuity buzzer is on 7 Date hold is active 8 1 AC Indicator for AC voltage or current 2 DC Indicator for DC voltage MAX Maximum reading displayed The unit of temperature o C Centigrade temperature o F Fahrenheit temperature o C o F 9 Ω Ohm The unit of resistance kΩ kilohm 1 x 103 or 1000 ohms MΩ Megaohm ...

Page 14: ... unit of current Display Symbols 2 see figure 2 mV V Volts The unit of voltage mV Millivolt 1x10 3 or 0 001 volts 12 13 Indicates negative reading 14 OL The input value is too large for the selected range Model UT201 202 OPERATING MANUAL 14 ...

Page 15: ...Insert the red test lead into the VΩ terminal and the black test lead into the COM terminal 2 Set the rotary switch to V 3 Connect the test leads across with the object being measured The measured value shows on the display Note l In each range the Meter has an input impedance of 10MΩ This loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than ...

Page 16: ...ages to the Meter from eletric shock do not attempt to measure voltages higher than 600V AC DC although readings may be obtained The AC Voltage ranges are 2 000V 20 00V 200 0V and 600V To measure AC 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 V 3 Connect the test leads across with the ...

Page 17: ...been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 17 C Measuring Resistance see figure 5 red black figure 5 Warning To avoid harms to you do not attempt to input voltages higher than 60V DC or 30V rms AC To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all ...

Page 18: ...ent l l l l l l For high resistance measurement 1M it is normal taking several seconds to obtain a stable reading If reading with shorted test leads is not 0 5 check for loose test leads wrong function selected or enabled data hold function The LCD displays OL indicating open circuit or the tested resistor value is higher than the maximum range of the Meter Resistance measurement is default to aut...

Page 19: ...ndutor 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 1 Insert the red test lead into the VΩ terminal and the black test lead into the COM terminal 2 Set the rotary switch toΩ and press SELECT button to select measurement mode 3 For forward voltage drop readings on any se...

Page 20: ...ay l The LCD will display OL indicating either open circuit or wrong polarity connection l The unit of diode is volt V displaying the forward voltage drop readings l To remove the objects being tested from the circuit when measuring can obtain a more accurate result l When diode testing has been completed disconnect the connection between the testing leads and the circuit under test and remove tes...

Page 21: ...to 120 Ω 5 The buzzer does not sound if the resistance of a circuit under test is higher than 120Ω Note l The buzzer beeps once when pressing any buttons at any rotary switch positions except at 2 20A positions if the button is valid If the button is not valid it does not beep At 2 20A rotary switch position the buzzer is set not to beep l The buzzer beeps 5 times continuously on around 1 minute b...

Page 22: ...button to select o F or o C measurement mode o C measurement mode is default 3 Place the temperature probe to the object being measured The measured value shows on the display red black figure 8 Note l The Meter automatically displays the temperature value inside the Meter when there is no temperature probe connection l When temperature measurement has been completed disconnect the connection betw...

Page 23: ...n circuit voltage between the circuit and the ground is greater than 600V Use proper function and range for the measurement The measuremnet ranges of current are 2 000A 20 00A 200 0A and 400A To measure current do the following 1 Set the rotary switch to 2 20A or 200 400 A 2 Press the lever to open the transformer jaws 3 Center the conductor within the transformer jaw The measured value shows on t...

Page 24: ...measure only one conductor at each time l 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 Model UT201 202 OPERATING MANUAL 24 ...

Page 25: ...er is entered Sleep Mode at temperature functions of Model UT202 the Meter cannot be activated by turning the rotary switch to AC current ranges 2 By pressing any button must be according to The Effectiveness of Functional Buttons on page 12 3 The Hold function will be cancelled if the Meter is activated by pressing the HOLD button To disable the Sleep Mode function press and hold HOLD button whil...

Page 26: ... Test 1 meter drop test passed l Max Jaw Size 28mm diameter l Projected Max Current conductor size 26mm diameter l Power 2pcs of 1 5V battery AAA l Battery Life typically 150hours alkaline battery l Sleep Mode can be disabled l Dimensions H x W x L 30mm x 76mm x 208mm Weight Approximate 260g battery included B Environmental Restrictions l The Meter is suitable for indoor use l Altitude Operating 2...

Page 27: ...5 600V rms A AC Voltage Auto ranging Remarks l Input impedance 10MΩ 100pF l Displays effective value of sine wave mean value response l Frequency response 40Hz 1kHz l To adjust reading in accordance with effective value B DC Voltage Auto ranging 200 0mV 2 000V 20 00V 200 0V 600V Range Resolution 0 8 1 Overload Protection Accuracy 1 3 600V rms 0 1mV 1mV 10mV 100mV 1V 0 8 3 Remarks Input impedance 1...

Page 28: ...curacy 100mΩ Around 50Ω the buzzer beeps 600Vp Remark l Open circuit voltage approximate 0 45V l The buzzer may or may not beeps when the resistance of a circuit under test is between 50Ω and 120Ω The buzzer may not beep when the resistance of a circuit under test is greater than 120Ω Range Resolution Overload Protection Accuracy 1mV Display approximate forward voltage drop 0 5V 0 8V 600Vp E Diode...

Page 29: ...8 32 o F 752 o F 1 6 752 o F 1832 o F 2 18 600Vp G AC Current Auto ranging Remarks l Displays effective value of sine wave mean value response To adjust reading in accordance with effective value Model UT201 202 OPERATING MANUAL 29 Range Resolution Overload Protection Accuracy 2 000A 20 00A 200 0A 400A 50Hz 60Hz 400A rms 0 001A 0 01A 0 1A 1A 3 12 4A 2 8 1 5 5 Frequency Response 1A 4 40 1A 3 30 ...

Page 30: ...ase A General Service l Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents l To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings l Turn the Meter power off when it is not in use l Take out the battery when it is not using for a long time l Do not use or store the Meter in a place of humidity hi...

Page 31: ...e 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 Remove the old battery from the battery compartment 5 Replace the battery with 2pcs of new 1 5V AAA battery 6 Rejoin the case bottom and the battery compartment and reinsta...

Page 32: ...Dong 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 UT201 202 OPERATING MANUAL 32 ...