www.pce-industrial-needs.com Manual TRMS Multimeter PCE
Contents
1. info tursdaletechnicalservices co uk Do not use or store the Meter in a place of humidity high temperature explosive inflammable and strong magnetic field B Replacing the Battery A Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator ci appears Make sure the test leads are disconnected from the circuit being tested before opening the case bottom To replace the battery See figure 12 1 Turn the Meter power off and remove all connections from the terminals 2 Remove the screw from the tilt stand and the battery compartment and separate the battery compartment and the tilt stand 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 5 Rejoin the tilt stand battery compartment and case bottom and reinstall the screw C Replacing the Fuses 23 info tursdaletechnicalservices co uk A Warning To avoid electrical shock or arc blast or personal injury or damage to the Meter use specified fuses ONLY in accordance with the following procedure To test the fuse See figure 13 The Meter does not response when measuring current and transistor hFE go to inspect the Meter built in fuses if they are broken To replace the Meteris fuse See figure 12 1 Turn the Meter power off and remove all2. In addition to the conventional measuring functions there is a RS232C or USB standard serial port data hold relative mode peak measurement low battery display display backlight and sleep mode Except where noted the descriptions and instructions in this Operating Manual apply to all Model UT61A UT61B UT61C UT61D UT61E Unpacking Inspection Open the package case and take out the Meter Check the following items carefully to see any missing or damaged part stem Description ty 9V Battery NEDA1604 6F22 or 0006P installed inside the Meter RS232C Interface Cable except UT61A USB Interface Cable Optional at extra cost except UT61A Installation Guide amp Computer Interface Software CD ROM Come 1 piece along with the RS232C or USB Interface Cable except UT61A In the event you find any missing or damage please contact your dealer immediately Safety Information This Meter complies with the standards IEC61010 in pollution degree 2 overvoltage category CAT III 1000V CAT IV 600V and double insulation CAT Ill Distribution level fixed installation with smaller transient overvoltages than CAT IV CAT IV Primary supply level overhead lines cable systems etc 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
3. www pce industrial needs com Tursdale Technical Services Ltd Unit N12B Tursdale Business Park Co Durham DH6 5PG United Kingdom Phone 44 0 191 377 3398 Fax 44 0 191 377 3357 info tursdaletechnicalservices co uk http www industrial needs com Manual TRMS Multimeter PCE UT 61E gt info tursdaletechnicalservices co uk Table of Contents Title Page Overview 4 Unpacking Inspection 5 Safety Information 6 Rules For Safe Operation 7 International Electrical Symbols 9 The Meter Structure 10 Rotary Switch 11 Functional Buttons 12 Display Symbols 13 Measurement Operation 45 A DC AC Voltage Measurement 45 B DC AC Current Measurement 18 C Measuring Resistance 21 D Testing for Continuity 24 E Testing 10065 oo a 26 F Capacitance Measurement 29 G Frequency Measurement _ _ _ _ _ _ _ 31 H Temperature Measurement 33 Transistor hFE Measurement 39 J EF Function 97 Operation of Hold Mode 38 RANGE Button 39 MAX MIN Button 39 PEAK Buton a ee ee 39 Paapua eS SS a 40 The Use of Relative Value Mode 40 The BLUE Button 41
4. 01uF 1000V dc 750V residual 400uF 4 0 5 a reading when the 4000uF circuit is open oe 0 001nF There is around 220nF 0 01nF SOpF residual 2 2uF ee 2 24F 0 0001 uF reading when the 0 001 uF circuit is open 1000V dc 750V 220uF 0 01uF 4 0 5 T 0 0001mF T J 0 ac o measure a oioi E 220mF KOSS 01 KOSS unspecified REL to ensure accuracy G Frequency satu UT61A B C D 10HzZ 10MHz 0 1 4 0 01Hz UT60E 10Hz 220MHz 0 01 5 0 001Hz e Overload Protection 1000Vdc 750V ac Input Amplitude DC electric level is zero gt UT61A B C D When 10Hz 10MHz 200mV lt a lt 30Vrms gt UT61E When 10Hz 10MHz 300mV lt a lt 30Vrms When gt 10MHz 40MHz 400mV lt a lt 30Vrms When gt 40MHz unspecified gt When measuring on line frequency or duty cycle under AC Voltage and Current measurement mode the input amplitude and frequency response must satisfy the following requirement Input amplitude range x 30 Frequency response UT61A and B lt 400Hz UT61C UT61D and UT61E lt 1kHz H Diode Test Overload Protection UT61A UT61B 0 001V UT61C and Open circuit voltage UT61D around 2 8V Jants UT61E 0 0001V 21 info tursdaletechnicalservices co uk I Continuity Test Overload Protection UT61A B C D UT61A B C D gt Open circuit voltage is around 0 45V gt Broken circuit resistance value is around gt 350 the buzzer does not beep gt Good circuit resistanc
5. RELA to automatically subtract the value measured when the testing leads are short circuited from the reading lf reading with shorted test leads is not lt 0 52 check for loose test leads or other reasons For high resistance measurement gt 1MQ it is normal to take several seconds to obtain a stable reading To obtain stable reading use test lead as short as possible or use the included multi purpose socket to carry out measurement The LCD displays OL indicating open circuit for the tested resistor or the resistor value is higher than the maximum range of the Meter 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 info tursdaletechnicalservices co uk D Testing for Continuity See figure 5 A 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 avoid harm to yourself do not input higher than DC 60V or AC 30V voltages To test for continuity connect the Meter as below 1 Insert the red test lead into the Q terminal and the black test lead into the COM terminal 2 Set the rotary switch to and press BLUE button to select measurement mode 3 The buzzer sounds continuously if the resistor to be tested is lt 10Q The buzzer does not so
6. measurement 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 anew measurement value is equal to the stored value then display 0 0V To enter or exit REL mode Press RELA to enter REL mode and the present measurement range is locked and display 0 as the stored value Press RELA again to reset the stored value and exit REL mode The BLUE 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 UT61A UT61B UT61C and UT61D only A 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 HOLDILIGHT for over 2 seconds to turn the Display Backlight on The display backlight will automatically off around after 10 seconds Sleep Mode UT61B and UT61C only To preserve battery life the Meter automatically turn off if you do not turns the rotary switch or press any button for around 15 minutes The Meter can be activated by turning the rotary switch or pressing any button To disable the Sleep Mode function press BLUE button while turning on the Meter 15 info tursdaletechnicalservices co uk General Specifications Maximum Voltage betw
7. the connections from the terminals 2 Remove the screw from the tilt stand and the battery compartment and separate the battery compartment and the tilt stand from the case bottom 3 Remove the two screws from the case bottom and separate the case top from the case bottom 4 Remove the fuse by gently prying one end loose then take out the fuse from its bracket 5 Install ONLY replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket AmA range F1 1A H 240V 6x25mm CE 10A range F2 10A H 240V D6x25 mm CE 6 Rejoin the case bottom and case top and reinstall the screw 7 Rejoin the tilt stand battery compartment and case bottom and reinstall the screw USB Serial Port UT61B UT61C UT61D and UT61E only It is optional at extra cost Please refer to the ilnstallation Guide amp Computer Interface Softwarei for installing and operating instructions of the UT61 Interface Program In this direction will find a vision of the measurement technigue http www industrial needs com measuring instruments htm NOTE This instrument doesn t have ATEX protection so it should not be used in potentially explosive atmospheres powder flammable gases 24
8. under test and remove the testing leads away from the input terminals of the Meter B DC AC Current Measurement See figure 3 figure 3 AA Warning Before connecting the Meter to the return circuit to be tested cut off the current of the return circuit If the fuse burns out during measurement the Meter may be damaged or the operator himself may be hurt Use proper terminals function and range for the measurement When the testing leads are connected to the current terminals do not parallel them across any circuit To measure current do the following 1 Insert the red test lead into the HMA or A input terminal and the black test lead into the COM terminal 2 Setthe rotary switch to HA MA or A 3 The Meter defaults to DC current measurement mode To toggle between DC and AC current measurement function press BLUE button 4 Connect the test lead in serial to the return circuit to be tested The measured value shows on the display UT61A UT61B and UT61C display effective value of sine wave mean value response UT61D and UT61E display true rms value 5 Press Hz to obtain the frequency and duty cycle value gt Input Amplitude DC electric level is zero gt Input Amplitude 2range X 30 gt Frequency response UT61A and B lt 400Hz UT61C UT61D andUT61E lt 1KHz Note Ifthe value of current to be measured is unknown use the maximum measurement position and reduce the range step by step
9. A 1 2 10 1 5 50 25mm 0 ot X no 20 50 25m 19 53 info tursdaletechnicalservices co uk Remarks e When lt B5A Continuous measurement is allowed e When 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes True RMS is applicable from 10 of range to 100 of range AC crest factor can be up to 3 0 except 1000V where it is 1 5 A residual reading of 10 digits with test leads shorted will not affect stated E Resistance UT61A and UT61B oa o 1 2 2 When measuring AKQ 0 001k2 A below 2k2 apply 0 01kQ 1 0 2 1000V dc 750V RELA to ensure 400kQ 0 1kQ ac measurement 0 001M2 1 2 2 accuracy 4OMQ 0 01MQ 1 5 2 UT61C and UT61D Overload Resolution Accuracy Protection 122 ENRETE 0 001k0 below 2k apply 1 0 2 1000V dc 750V REL A to ensure 600k measurement 0 001M2 1 2 2 accuracy 0 01MQ 1 5 2 Remark UT61E or When measuring 0 000 TKO 0 5 10 below 2kQ apply 0 001k REL A to 1000V dc 220kQ 0 01kQ 750V ac ensure 0 0001MQ 0 8 10 measurement 0 001MQ 1 5 10 accuracy 220MQ 0 01MQ 3 0 50 F Capacitance UT61A and UT61B oes 0 01nF There is 400nF 3 0 5 around 10nF 1000V dc 750V residual 40uF ac reading when the circuit is Ope 20 53 info tursdaletechnicalservices co uk UT61C and UT61D rae 0 01nF There is 400nF A around 0 0014F t 10nF 0
10. AX MIN button UT61A UT61B UT61C and UT61D only Press MAX MIN to start recording of maximum and minimum values Steps the display through high MAX and low MIN readings The Meter enters manual ranging mode after pressing MAX MIN button Press and hold MAX MIN for over 2 seconds to exit MAX MIN mode and return to the present measurement range PEAK Hold UT61E only Under voltage and current measurement mode press PEAK button to enter manual ranging mode and start recording of Pmax and Pmin values The LCD displays MANU Pmax Press PEAK again to display MANU Pmin Press PEAK to step the display through Peak Max and Peak Min readings Press and hold PEAK for over 2 seconds to exit Peak mode the LCD displays the present measurement values Don t press the PEAK Key lf the meter have entered CAL mode Data Outputting Except UT61A Press and hold RELA button for over 2 seconds to enter or exit RS232C or USB mode The sleep mode feature will be disabled after entering RS232C or USB mode the on the LCD will disappear UT61B and UT61C only Ifthe Meter is carrying out HOLD MAX MIN or REL measurement the LCD will display the corresponding readings but the interface output will still be the random value of the present input terminals measurement For UT61E Auto entering Data outputting mode The Use of Relative Value Mode The REL mode applies to all measurement functions except frequency duty cycle
11. Turning on the Display Palgi ee 7 E 41 Sleep Mode 41 General Specifications 42 Accuracy Specifications 43 ADE V lla e oo e 44 B AC Voltage 46 C DC Current 49 DAC Ce A m 52 E Resistance 99 F Capacitance 57 G Freguency 59 H Diode Test 60 Continuity Test 60 SMe ccc lt ec ee 61 K Transistor hFE 62 Maintenance 62 A General Setvice _ M 62 B Replacing the Battery 63 C Replacing the Fuses _ _ _ _ _ _ __ __ 65 USB and RS232C Serial Port 67 gt info tursdaletechnicalservices co uk Overview This Operating Manual covers information on safety and cautions Please read the relevant information carefully and observe all the Warnings and Notes strictly A Warning To avoid electric shock or personal injury read the Safety Information and Rules for Safety Operation carefully before using the Meter Digital Multimeter Model UT61A UT61B UT61C UT61D True RMS and UT61E True RMS hereafter referred to as the Meter is an auto ranging multimeter The enclosure structure design adopted advanced to injection technique in order to provide sufficient insulation The Meter can measure AC DC Voltage and Current Resistance Diode Continuity Buzzer Capacitance Frequency Temperature C or F hFE and EF Function
12. e When lt 5A Continuous measurement is allowed e When gt 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes 18 PCE info tursdaletechnicalservices co uk D AC Current UT61A and UT61B Accurac 400uA 1 2 5 4000A Fuse 1 F1A H 240V CE 0 01mA A 6 x 25mm 400mA toa 0 001A i Fuse 2 F10A H 240V CE 0 01A 2 0 5 56 x 25mm Remarks e When lt 5A Continuous measurement is allowed e When gt 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes Displays effective value of sine wave UT61C and UT61D Accuracy Overload Range Resolution UT61C UT61D Protection 45 1kHz 45 1kHz gt 1kHz 3kHz 600uA 0 14 A 1 5 5 Fuse 1 F1AH o 0 01mA 2 0 5 la 600mA 1 5 5 1 5 5 t 0 001A Fuse 2 F10A 3 0 5 H 240V CE 10A 0 01A 2 0 5 2 0 5 oat 6 x 25mm 1 2 5 Remarks e When lt 5A Continuous measurement is allowed When gt 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes UT61C Displays effective value of sine wave UT61D gt True RMS is applicable from 10 of range to 100 of range AC crest factor can be up to 3 0 except 1000V where it is 1 5 gt Aresidual reading of 10 digits with test leads shorted will not affect stated accuracy UT61E 215 1KH7 1KH7 10kH7 Overload Protection A 0 8 10 1 2 50 Fuse 1 F1AH n Ay 240V CE 06 x OO
13. e value is lt 10Q the buzzer beeps continuously e UT61E gt Open circuit voltage is around 1 2V gt Broken circuit resistance value is around gt 30Q the buzzer does not beep gt Good circuit resistance value is lt 10 the buzzer bee s continuous J Temperature Measurement UT61B and UT61C only Overload Protection 40 20 C 8 5 gt 20 0 C 1 2 4 a 100 C 1 2 3 0 a 1000 C 2 5 2 onnyde 750Vac 40 4 T KOSON Thermocouple It is suitable to use K type thermocouple The included point contact K type thermocouple can only be used on less than 230 C temperature measurement K Transistor hFE Model UT61A only Resolution Remark hFE Ibo 10HA 1000 B MAX Maintenance This section provides basic maintenance information including battery and fuse replacement instruction A Warning Do not attempt to repair or service your Meter unless you are gualified 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 off the power of the Meter when it is not in use Take out the battery when it is using for a long time 22
14. een any Terminals and Grounding Refer to the different ranges input protection voltage A Fused Protection for HAMA Input Terminal 1A H 240V 6x25mm A Fused Protection for 10A Input Terminal 10A H 240V 6x25mm Display gt UT61A and UT61B Maximum reading 4000 frequency 9999 analogue bar graph 41 segments gt UT61C and UT61D Maximum reading 6000 frequency 9999 analogue bar graph 61 segments gt UT61E Maximum reading 22000 analogue bar graph 46 segments Measurement Speed Updates 2 3 times second Range Auto or Manual Polarity Display Auto Overload indication Display OL Battery Deficiency Display Ca Temperature gt Operating 0C to 40 C 32 Fto 104 F gt Storage 10 C to 50 C 14 F to 122 F e Relative Humidity gt lt 75 0C 30C below gt lt 50 30 40C Battery Type One piece of 9V NEDA1604 or 6F22 or 006P Under the influence of radiated Radio Frequency electromagnetic Field phenomenon the captioned model have a measurement error it will be back to normal when the interference is removed Dimensions HxWxL 180 x 87 x 47 mm Weight Approximate 370g battery included Safety Compliances IEC61010 CAT III 1000V CAT IV 600V MISS and double insulation standard Certifications Accuracy Specifications Accuracy a reading b digits guarantee for 1 year Operating temperature 18 C 28 C Relative humidity lt 75 A DC Voltage UT61A and UT61B Fixed Range Resoluti
15. ethod is more stable and correct for small value of capacitance testing 3 Connect the test leads across with the object being measured The measured value shows on the display Note It takes a longer time when the tested capacitor is more than 100uF The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range e When capacitance measurement has been completed disconnect all the connection between multi purpose socket capacitor and the Meter G Frequency Measurement see figure 8 A Warning To avoid personal harm do not attempt to input higher than 30V rms tested frequency voltage To measure frequency connect the Meter as follows 1 Insert the red test lead into the Hz terminal and the black test lead into the COM terminal 2 Set the rotary switch to Hz frequency measurement Hz is default or press Hz button to select Hz measurement mode 3 Connect the test leads across with the object being measured The measured value shows on the display 4 If you need to measure duty cycle press Hz button to select measurement mode Note Input Amplitude DC electric level is zero gt UT61A B C D When 10Hz 10MHz 200mVSa lt 30Vrms gt UT61E When 10Hz 10MHz 300mV lt a lt 30Vrms When 10MHz 40MHz 4 00mV S a lt 30Vrms When 2 40MHz unspecified For UT61E Measuring Audio freguency if the input voltage is more than 15 volt the meter will si
16. f 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 diodes Before measuring current check the Meteris fuses and turn off the current to be tested before connecting the Meter to the circuit After connecting the circuit reliably turn the current to be tested on Replace the battery as soon as the battery indicator C4 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 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 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 International Electrical Symbols AC or DC Double Insulated KE Deficiency of Built In Ba
17. fect stated accuracy 17 53 info tursdaletechnicalservices co uk UT61E 45 1 kHz gt 1kH2 10kHz Input Impedance Fixed Value Input 220mV 0 01mV 1 0 10 1 5 50 eae 0 0001V 1 2 50 1000V dc 750V 0 001V 0 8 10 and one ac 220V 0 01V 2 0 50 kal 750V 0 1V 1 2 10 3 0 50 True RMS is applicable from 10 of range to 100 of range e AC crest factor can be up to 3 0 except 1000V where it is 1 5 e Aresidual reading of 10 digits with test leads shorted will not affect stated C DC Current UT61A and UT61B Overload Protection 400A mn 4000uA Fuse 1 F1A H 240V CE 56 0 01mA x 25mm 400mA ee o 4A _ 0 0014 4A 0 001A 1 5 3 Fuse 2 F10A H 240V CE 0 01A D6 x 25mm Remarks e When lt 5A Continuous measurement is allowed e When gt 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes UT61C and UT61D Overload Protection 600A 6000uA A Fuse 1 F1AH 240V aed CE D6 x 25mm 600mA 0 001A o Fuse 2 F10A H 240V 0 01A adie CE 6 x 25mm Remarks e When lt 5A Continuous measurement is allowed e When gt 5A Continuous measurement less than 10 seconds at an interval more than 15 minutes UT61E Overload Protection 220uA 0 014 A 22004A 0 5 10 Fuse 1 F1A H 240V CE 6 x 0 001mA 25mm 220mMA 0 01mA 2 2A 0 0001A 1 2 50 Fuse 2 F10A H 240V CE D6 x 10A 0A 0 001A 25mm Remarks
18. indicator O Z S 4 AC 5 DC Oom The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution 7 MANU Indicatorformanualrangingmod Z o Z o 8 OL The inputvalue is too large for the selected range 9 hFE Transistor testing indicator oo 41 m The continuity buzzeris on O S O Maximum and Minimum reading Data output is in progress 14 The battery is low A 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 Sensor test is in progress G AC DC PAUTO Symbol Meaning al A The REL is on to display the stored value minus the present value Q Ohm The unit of resistance Q kQ MQ kQ kilohm 1 x 10 or 1000 ohms MA Megaohm 1 x 10 or 1 000 000 ohms mV Millivolt 1 x 10 or 0 001 volts A Amperes amps The unit of current uA mA A mA Milliamp 1 x 10 or 0 001 amperes HA Microamp 1x 10 or 0 000001 amperes F Farad The unit of capacitance nF uF mF HF Microfarad 1 x 10 or 0 000001 farads nF Nanofarad 1 x 10 or 0 000000001 farads F Fahrenheit The unit of temperature Hz Hertz The unit of frequency in cycles second Hz kHz MHz kHz Kilohertz 1 x 10 or 1 000 hertz MHz Megahertz 1 x 10 or1 000 000 hertz PB The unit of transistor info tursdaletechnicalservices co uk A DC AC Vol
19. mulate the sound in same frequency 1 2 info tursdaletechnicalservices co uk 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 H Temperature Measurement UT61B and UT61C only See figure 9 The included K type point contact temperature probe can only be used in the measurement below 230 C A Warning To avoid harm to yourself do not input higher than DC 60V or AC 30V voltages To measure temperature connect the Meter as follows 1 Set the rotary switch to C F 2 Insert the temperature probe into the input terminal as shown on the figure 9 3 Place the temperature probe to the object being measured After few seconds the measured value shows on the display 4 Press BLUE button to toggle between C and F temperature Note To avoid measurement error especially low temperature measurement the operating temperature must not exceed 18 28 C When temperature measurement has been completed disconnect the connection between the temperature probe and the object being measured and remove the temperature probe away from the input terminals of the Meter I Transistor hFE Measurement UT61A only See figure 10 13 info tursdaletechnicalservices co uk 1 Set the rotary switch to hFE 2 Insert the multi purpose socket into the input terminal as sho
20. ng diode being tested is open or polarity is reversed The unit of diode is Volt V displaying the forward voltage drop readings When diode 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 Capacitance Measurement See figure 7 Select A Warning To avoid damage to the Meter or to the equipment under test disconnect circuit power and discharge all high voltage capacitors before measuring capacitance Use the DC Voltage function to confirm that the capacitor is discharged 11 info tursdaletechnicalservices co uk To measure capacitance connect the Meter as follows 1 Insert the red test lead into the4 terminal and the black test lead into the COM terminal 2 Set the rotary switch tode and press BLUE button to select nF measurement mode At that time the Meter will display a fixed value as below which is the Meter internal fixed distributed capacitance value To ensure accuracy when measuring a small value of capacitance the tested value must subtract this value REL mode can help on that UT61A UT61B UT61C UT61D and UT61E around 10nF UT61E around 50PF For more convenience use the included multi purpose socket for measuring capacitor with leads or SMT capacitor Insert the capacitor to be tested into the corresponding and jack of the multi purpose socket This m
21. on Accuracy Hipu Value Impedance UT61A UT61B Input 0 01mV a A Around 400mV 0 eee gt 3000MQ 0 001V 1000V de 0 01V 0 5 1 Around 750V ac 400V 10MQ 1000V 16 53 info tursdaletechnicalservices co uk UT61C and UT61D 0 01mV te Around 600mV gt 3000MO 0 001V 1000V de 0 01V 0 5 1 750V ac 600V AO LINEA 1000V 1 0 3 UT61E 220mV 0 01mV 0 1 5 Around gt 3000MQ 0 0001V 22V 0 001V 0 1 2 1000V dc 750V 220V 0 01V Around 10M MA 1000V 0 1V 0 1 5 B AC Voltage UT61A and UT61B Accuracy nout Fixed Range Resolution 45 400Hz M kase Value UT61A UT61B p Input 0 01 V 1 2 5 Around 400mV gt 3000M 1000V amo 0 1048 Around 10M 750V ac 400V 750V 1 2 5 Displays effective value of sine wave mV range is applicable from 5 of range to 100 of range UT61C and UT61D AT Range Resolution UTC UTDD m cae Fixed Value 45 1kHz 45 1kHz sa ra Input 0 01mV F E TTV 1 2 5 1 2 5 2 0 5 E 0 001V 1000V dc 0 01V 1 0 3 1 0 3 1 5 5 Arak ONU 750V ac 600V 750V IV 1 2 5 1 2 5 3 0 5 e UT61C Displays effective value of sine wave mV range is applicable from 5 of range to 100 of range e UT61D gt True RMS is applicable from 10 of range to 100 of range gt AC crest factor can be up to 3 0 except 1000V where it is 1 5 gt A residual reading of 10 digits with test leads shorted will not af
22. tage Measurement See figure 2 figure 2 A Warning To avoid harms to you or damages to the Meter from electric shock please do not attempt to measure voltages higher than 1000V although readings may be obtained When measuring high voltage take extra care to avoid electric shock l 2 3 Insert the red test lead into the V terminal and the black test lead into the COM terminal Set the rotary switch to V DC measurement is default or press BLUE button to switch between DC and AC measurement mode Connect the test leads across with the object being measured The measured value shows on the display UT61A UT61B and UT61C display effective value of sine wave mean value response UT61D and UT61E display true rms value 4 Press Hz to obtain the frequency and duty cycle value gt Input Amplitude DC electric level is zero gt Input Amplitude gt rangex30 gt Frequency respouse UT61A and B lt 400Hz UT61C UT61D and UT61E lt 1KHz Note In each range the Meter has an input impedance of 10MQ except mV range which input impedance is 3000MQ This loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10kQ the error is negligible 0 1 or less For UT61A and UT61B When measuring mV you must press RANGE manually to enter mV range When voltage measurement has been completed disconnect the connection between the testing leads and the circuit
23. the equipment under test A Note identifies the information that user should pay attention on International electrical symbols used on the Meter and in this Operating Manual are explained on page9 info tursdaletechnicalservices co uk Rules For Safe Operation A Warning To avoid possible electric shock or personal injury and to avoid possible damage to the Meter or to the eguipment 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 The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prevent damage of 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 Do not use or store the Meter in an environment of high temperature humidity explosive inflammable and strong magnetic field The performance o
24. ttery A Warning Refer to the Operating Conforms to Standards of Manual C European Union gt info tursdaletechnicalservices co uk The Meter Structure see figure 1 1 LCD Display 2 Functional Buttons 3 Blue button 4 Rotary Switch 5 Input Terminal Rotary Switch Below table indicated for information about the rotary switch positions V AC and DC Voltage Measurement AC Voltage Measurement UT61D only DC Voltage Measurement UT61D only Resistance Measurement Diode Test Continuity Test m x DCmAandACmAMeasurement 0 EF Sensor Test UT61A only opp Powers SSS Functional Buttons Below table indicated for information about the functional button operations Press RANGE to enter the manual ranging mode the Meter beeps e Press RANGE to step through the ranges available for the selected function the Meter beeps Press and hold RANGE for 2 seconds to return to autoranging the Meter beeps REL A Press to enter REL mode Press again to exit REL mode For Model UT61C UT61C and Press and hold for over 2 seconds to enter or exit RS232C o USB mode Press to step the display through Pmax and Pmin readings PEAK UT61E only Press and hold for 2 seconds to exit Peak mode e CAL means the meter enter self calibration mode info tursdaletechnicalservices co uk Display Symbols Symbol Meaning 01 6G 0 Dataholdisactive OOO 2 amp Sleep Mode
25. und if the resistor to be tested is gt 35Q Note UT61A UT61B UT61C and UT61D open circuit voltage is around 0 45V UT61E open circuit voltage is around 1 2V When 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 E Testing Diodes See figure 6 10 gt info tursdaletechnicalservices co uk A Warning To avoid possible damage to the Meter and to the device under test disconnect circuit power and discharge all high voltage capacitors before testing diodes To avoid harm to yourself do not input higher than DC 60V or AC 30V voltages 1 Insert the red test lead into the Q terminal and the black test lead into the COM terminal 2 Set the rotary switch to gt and press BLUE button to select measurement mode 3 For forward voltage drop readings on any semiconductor component place the red test lead on the components anode and place the black test lead on the components cathode The measured value shows on the display Note Ina circuit a good diode should still produce a 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 indicati
26. until a satisfactory reading is obtained For safety sake each measurement time for gt 5A current should be less than 10 seconds and the interval time between 2 measurements should be greater than 15 minutes When current measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads info tursdaletechnicalservices co uk C Measuring Resistance See figure 4 figure 4 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 avoid harm to yourself do not input higher than DC 60V or AC 30V voltages To measure resistance connect the Meter as follows 1 Insert the red test lead into the Q terminal and the black test lead into the COM terminal 2 Set the rotary switch to Q resistance measurement Q is default or press BLUE button to select Q measurement mode 3 Connect the test leads across with the object being measured If there is lead on the resistor or SMT resistor itis more convenience to use the included multi purpose socket to carry out testing The measured value shows on the display Note The test leads can add 0 20 to 0 5 Q of error to resistance measurement To obtain precision readings in low resistance measurement short circuit the input terminals beforehand using the relative measurement function button
27. wn on figure 10 3 Insert the transistor to be tested into the corresponding multi purpose socket jacks 4 The LCD display hFE nearest value Note When transistor measurement has been completed disconnect all the connection between multi purpose socket transistor and the Meter J EF Function UT61A only See figure 11 To use EF function connect the Meter as follows 1 Set the rotary switch to EF and remove the test lead from the input terminals 2 Place the housing front part with marking A towards the object being measured 3 There will be three types of displays y LCD displays different size of digits to represent the strength of detected signal When the LCD displays OL the buzzer beeps and the red LED blinks Operation of Hold Mode AN 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 to exit Hold mode the Meter beeps In Hold mode lil is displayed RANGE button Press RANGE to enter the manual ranging mode the Meter beeps Press RANGE to step through the ranges available for the selected function the Meter beeps Press and hold RANGE for over 2 seconds to return to autoranging the Meter beeps 14 info tursdaletechnicalservices co uk M
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