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UT108/109 OPERATING MANUAL

34

Note

● In a 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” indicating open-circuit or wrong polarity connection.
● When diode testing has been completed, disconnect the connection between the

testing leads and the circuit under test.

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Содержание UT108

Страница 1: ...P N 110401102526 ...

Страница 2: ...Operating Manual UT108 109 Handheld Automotive Multi Purpose Meters ...

Страница 3: ... Information Rules for Safe Operation Automotive Servicing Safety Guide International Electrical Symbols The Meter Structure Rotary Switch Functional Buttons Display Symbols Measurement Operation Part 1 Multimeter Basic Testing A AC DC Voltage Testing B DC millvoltage Testing C AC DC Current Testing D Resistance Testing E Continuity Testing ...

Страница 4: ...g K Engine Tach Rotation Speed Testing RPMx10 L Operation of Hold Mode M RANGE button N MAX MIN button O Data Outputting P Display backlight Q The BLUE button R Automatic power off Part 2 Diagnosis of Automotive Troubles A Fuse Testing Check the fuse to see if it is blown out B Switch Testing Check the switch to see if it can work correctly C Solenoid or Relay Testing D Starting Charging System Te...

Страница 5: ...ion System Testing 1 Ignition Coil Testing 2 Ignition System High Voltage Damper Testing 3 Hall Switch Sensor Testing 4 Magnetic Resistance Sensor 5 RPMx10 Testing 6 Fuel System Testing J Engine Sensor Testing 1 Oxygen Sensor 2 Temperature Sensor 3 Position Sensor 4 Absolute Pressure MAP and Baro Sensor 5 Mass Air Flow MAF Sensor Title Page 51 52 54 56 57 57 60 62 64 65 67 69 70 72 73 75 78 ...

Страница 6: ...ltage C DC millvoltage D AC Current E DC Current F Resistance G Capacitance H Frequency I Diode J Continuity K Dwell L Tach Rotation Speed M Temperature Maintenance A General Services B Replacing the Fuses C Replacing the Battery Title Page 79 81 81 81 82 82 83 84 84 85 86 86 87 87 88 89 89 90 92 ...

Страница 7: ...the Meter is a 4000 counts 3 3 4 digits manual ranging meter The meter uses large scale of integrated circuit with integrated A D converter as its core Spotting a unique design with an extra large LCD display Connect Test Leads display full overload protection and unique outlook design For this reason it emerges as an electric meter with more outstanding performance for safer operation than other ...

Страница 8: ...ce 2 Test Lead 1 pair K Type Point Contact Temperature Probe 3 UT109 only and It is only suitable for 1 pair measuring temperature under 230 4 Alligator Clip 1 piece 5 RS232C interface cable 1 piece 6 CD ROM 1 piece 7 9V Battery NEDA 1604 6F22 or 006P 1 piece 8 Multi Purpose Socket Optional 1 piece 9 USB interface cable Optional 1 piece In the event you find any missing or damage please contact yo...

Страница 9: ... CAT III Distribution level fixed installation with smaller transient overvoltages than CAT IV CAT IV Primary supply level overhead lines cable systems ets Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired International electrical symbols used on the Meter and in this Operating Manual are explained on page 13 ...

Страница 10: ...he test leads for continuity Replace damaged test leads with identical model number or electrical specifications before using the Meter When using the test leads keep your fingers behind the finger guards Do not apply more than the rated voltage as marked on the Meter between the terminals or between any terminal and grounding When the meter working at an effective voltage over 60V in DC or 30V rm...

Страница 11: ...uce false readings that can lead to electric show 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 an...

Страница 12: ... that the air bag will also be opened for a few minutes after the ignition lock is closed or even when the automotive battery is cut off which is driven by the special energy reserve To prevent an accident from causing any personal injury or any damage to an automobile or any of its meters please read the following safety guidelines and testing procedure in earnest Wear protective eyeglasses which...

Страница 13: ...d or a spark plug socket because these components are provided with high voltages when the automobile is operating To connect or cut off an electronic component close the ignition lock Pay attention to the automotive producer s cautions notes and servicing procedures All the information explanations and detailed descriptions in the operation manual have originated from the industrial information r...

Страница 14: ...Do not try to find any short cut Check the hoses and leads where it is probably very difficult to find out where any trouble lies 3 Check any trouble with the air purifier or pipeline system 4 Check any damage to any sensor or the driving gear 5 Check the ignition lead any breakage of any terminal crack on any spark plug or breakage at the insulation of the ignition lead 6 Check all the vacuum hos...

Страница 15: ... International Electrical Symbols AC Alternating Current DC Direct Current Grounding AC or DC Diode Double Insulated Deficiency of Built In Battery Fuse Warning Refer to the Operating Manual Conforms to Standards of European Union ...

Страница 16: ...UT108 109 OPERATING MANUAL 14 The Meter Structure see figure 1 1 LCD display 2 Functional buttons 3 SELECT button 4 Power button 5 Rotary Switch 6 Input Terminals Figure 1 ...

Страница 17: ...he unit of temperature Centigrade temperature UT109 only The unit of temperature Fahrenheit temperature UT109 only Resistance Measurement Capacitance measurement Continuity Test Diode Test Frequency Measurement Current measurement unit μA Current measurement unit mA Current measurement unit A Automotive engine tach testing Displayed Reading x 10 Unit rpm Automotive ignition dwell testing Unit degr...

Страница 18: ...UT108 109 OPERATING MANUAL 16 Functional Buttons see figure 2 Below table indicated for information about the functional button operations Figure 2 ...

Страница 19: ...imum and minimum values Press to step the display through high MAX and low MIN readings at any time Press once to enter Frequency measurement mode Press and hold for 2 seconds to enter RS232C or USB mode Press RANGE to enter the manual ranging mode Press and hold RANGE for 2 seconds to return to auto ranging mode Under RPM or Dwell testing mode press RANGE to select 4CYL 6CYL or 8CYL Press SELECT ...

Страница 20: ...UT108 109 OPERATING MANUAL 18 Display Symbols see figure 3 Figure 3 ...

Страница 21: ... the battery indicator appears 3 maximum or minimum reading displayed 4 4CYL 6CYL or 8CYL displayed 5 Test of continuity 6 Indicates for DC voltage or current 7 Indicates for AC voltage or current 8 Indicates for dangers 9 Data hold is active 10 The meter is in the auto range mode 11 The meter is in the auto range mode 12 Indicates for 841000mV range 13 Test of DWLL 14 Test of RPM 15 Indicates for...

Страница 22: ...ric shock 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 an appropriate measurement position in V press BLUE button to switch between AC and DC measurement mode 3 AC voltage measurement display true rms value and press Hz button to obtain the frequency value input amplitude a...

Страница 23: ...ges to avoid electric shock In each range the Meter has an input impedance of approx 10MΩ this loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10kΩ the error is negligible 0 1 or less When voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testi...

Страница 24: ...UT108 109 OPERATING MANUAL 22 Figure 4 ...

Страница 25: ...testing leads and the circuit under test To measure DC millvoltage 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 an appropriate measurement position in 3 Connect the test leads across with the object being measured The measured value shows on the display Press Hz button to obtain the frequency va...

Страница 26: ...UT108 109 OPERATING MANUAL 24 Figure 5 ...

Страница 27: ...rrent terminals do not parallel them across any circuit otherwise it will burn the fuse or damage to the Meter To measure AC DC current connect the Meter as follows 1 Insert the red test lead into the μA mA or A terminal and the black test lead into the COM terminal 2 Set the rotary switch to an appropriate measurement position in μA mA or A Press blue button to switch between AC and DC measuremen...

Страница 28: ... unknown use the maximum measurement position 10A terminal and reduce the range step by step until a satisfactory reading is obtained When current measurement has been completed disconnect the connection between the testing leads and the circuit under test When measuring 5A 10A for continuous measurement 10 seconds and interval time between 2 measurement greater than 15 minutes ...

Страница 29: ...27 UT108 109 OPERATING MANUAL Figure 6 ...

Страница 30: ...ed test lead into the Ω terminal and the black test lead into the COM terminal 2 Set the rotary switch to an appropriate measurement position in Ω range then press BLUE button to select resistance measurement mode 3 Connect the test leads across with the object being measured The measured value shows on the display Note When there is no input for example in open circuit condition the Meter display...

Страница 31: ... 109 OPERATING MANUAL reading and it is better to choose shorter test lead When resistance measurement has been completed disconnect the connection between the testing leads and the circuit under test Figure 7 ...

Страница 32: ...ctive voltage over 60V in DC or 30V in AC To test for 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 Set the rotary switch to then press BLUE button to select continuity measurement mode 3 Connect the test leads across with the object being measured The buzzer does not sound when the resistance value is 30Ω The cir...

Страница 33: ...tion 4 The nearest value of the tested circuit show on the display the unit is Ω Note Open circuit voltage is approx 3V When continuity testing has been completed disconnect the connection between the testing leads and the circuit under test ...

Страница 34: ...UT108 109 OPERATING MANUAL 32 Figure 8 ...

Страница 35: ...fective voltage over 60V in DC or 30V in AC To test a diode out of a circuit 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 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...

Страница 36: ...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 open circuit or wrong polarity connection When diode testing has been completed disconnect the connection between the testing leads and the circuit under test ...

Страница 37: ...35 UT108 109 OPERATING MANUAL Figure 9 ...

Страница 38: ...eter 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 and press BLUE button to select capacitance measurement mode 3 The measured value shows on the display Note The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range When capacitance measurement has been completed disconnect all ...

Страница 39: ...37 UT108 109 OPERATING MANUAL Figure 10 ...

Страница 40: ...voltage or AC DC current measurement press Hz button to select frequency measurement mode the measured value shows on the display Press RANGE to select next range the maximum range is 1MHz Note Input Amplitude Refer to accuracy specifications When frequency measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads awa...

Страница 41: ...39 UT108 109 OPERATING MANUAL Figure 11 ...

Страница 42: ... input terminal as shown on the figure 12 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 and temperature Note To avoid measurement error especially low temperature measurement the operating temperature must not exceed 18 23 When temperature measurement has been completed disconnect the conne...

Страница 43: ...41 UT108 109 OPERATING MANUAL Figure 12 ...

Страница 44: ... select the number of cylinders and press BLUE button to select DWELL measurement mode 2 insert the red test lead into the V terminal and the black test lead into the COM terminal Connect the ends to be tested as illustrated If the cut off switch of an ignition system is tested connect the red test lead probe to the primary negative end of the ignition coil Refer to the automotive servicing manual...

Страница 45: ...43 UT108 109 OPERATING MANUAL Figure 13 ...

Страница 46: ... the TACH tachometer signal line which is connected to the computer DIS module of the automotive engine Refer to the automotive servicing manual for the specific position If an ignition system with a distributor board is used in the automobile connect the red test lead probe to the primary negative end of the ignition coil Refer to the automotive servicing manual for the specific position 3 Connec...

Страница 47: ...45 UT108 109 OPERATING MANUAL RPM 200 x 10 if the displayed value is 200 and the meter is set at the 6CYL 6 cylinders notch Figure 14 ...

Страница 48: ...ode 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 auto ranging N MAX MIN button 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 M...

Страница 49: ...ng RS232C or USB mode P Display backlight Press and HOLD button for over 2 seconds to turn on or turn off the display backlight Q 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 R Automatic power off The meter power off automatically if you have not changed the rotary switch or pressed a button for 15...

Страница 50: ...t the rotary switch to Ω 2 Insert the red test lead into the Ω terminal and the black one into the COM terminal 3 Short circuit the red and black test lead probes when the reading of the meter should be displayed between 0 2 Ω and 0 5 Ω If it is more than 0 5 Ω check the test leads to see whether they are well connected 4 Connect the red and black test lead probes in parallel to the two ends of th...

Страница 51: ...e same as in Items 1 to 3 Fuse Testing 2 Connect the red and black test lead probes in parallel to the two end of a solenoid or relay The impedance of most of solenoids or relay coils is less than 200 Ω See the details in the automotive manual Warning Both ends of a general solenoid or relay are connected with diodes Check to see if there is any damaged coil Even if the coil is found satisfactory ...

Страница 52: ...ol for the checking of these systems 1 Load Free Battery Testing Before testing the starting charging system test the battery to see if it is fully charged 1 Set the rotary switch to DCV 2 Insert the red test lead into the V terminal and the black one into the COM terminal 3 Turn off the ignition switch 4 Turn on the driving lights for 10 sec to release charges from the battery 5 Connect the black...

Страница 53: ...battery 1 Turn off and close the ignition key and all its accessories Make sure that the bus engine louver and room lights have been turned off and closed 2 Set the rotary switch to A 10A Insert the red test lead into the A terminal and the black one into the COM terminal 3 Cut off the link between the positive pole of the battery and the cable and connect the test lead probes to the circuit Conne...

Страница 54: ...cy modulated radio or clock needs a current supply of 100 mA F Trigger Voltage Battery Load Testing Upon the start of the engine test the battery to see if it can offer an adequate voltage 1 Set the rotary switch to DCV 2 Insert the red test lead into the V terminal and the black one into the COM terminal 3 Interrupt the ignition system to disable the start of the automobile Cut off the main ignit...

Страница 55: ...trast as follows If it is within the range the starting system is normal on the contrary it is shown that there may be something wrong with the battery cable starting system cable starting solenoid or starting motor Voltage Temperature 9 6 V or more 21 1 70 9 5 V 15 6 60 9 4 V 10 0 50 9 3 V 4 4 40 9 1 V 1 1 30 8 9 V 6 7 20 8 7 V 12 2 10 8 5 V 17 8 0 ...

Страница 56: ...em so as to disable the start of the automobile Cut off the main ignition coil shunt coil cam and starting sensor so as to cut off the ignition system Operate by reference to the automotive manual 2 Set the rotary switch to DCmV or DCV Insert the red test lead into the A terminal and the black test lead into the COM terminal 3 Refer to the LOSS typical trigger voltage circuit See figure 15 Test th...

Страница 57: ...Compare the readings of the tested voltages against the said table If the voltage is on the high side check the components and connectors to see if there is anything wrong If anything wrong is found do necessary servicing Figure 15 ...

Страница 58: ...adings being 13 2 V to 15 2 V 4 Open the throttle and control the rotation speed of the engine between 1800 RPM and 2800 RPM The voltage readings should be consistent with those in 3 with the difference being no more than 0 5 V 5 Turn on the lamps windshield wipers fans and so on to increase the loads of the electronic systems with the voltage readings being no less than 13 0 V 6 If the readings i...

Страница 59: ...it is damaged replace it with a new one 4 Connect the red test lead probe to the primary pole of the ignition coil and the black one to the primary pole of the coil see figure 16 See the detailed positions in various kinds of automotive manuals Warning The reading of the testing becomes the actual tested resistance only after the reduction of the short circuit values of the test leads The primary ...

Страница 60: ...utomotive manuals for the details 8 For a heater ignition coil repeat the said testing steps Warning For a heater ignition coil the resistance may be a little higher because the resistance of a coil will vary with the temperatures The higher the temperature the resistance will be higher on the contrary it will become lower ...

Страница 61: ...59 UT108 109 OPERATING MANUAL Figure 16 ...

Страница 62: ...nd electrodes which can only be moved out of the distributor board If it is moved out of anywhere else some damage will result Refer to various kinds of automotive manuals for the details 2 Set the rotary switch to the Ω Insert the red test lead into the Ω terminal and the black one into the COM terminal 3 Connect the red and black test lead probes in parallel to the two ends of the high voltage d...

Страница 63: ...61 UT108 109 OPERATING MANUAL Figure 17 ...

Страница 64: ... source end of the sensor and the negative pole to the ground end of the sensor by referring the details to the positions of the source and ground ends of the sensor in various kinds of automotive manuals 3 Set the rotary switch of the meter to Ω Insert the red test lead into the Ω terminal and the black one into the COM terminal 4 Connect the red and black test lead probes in parallel to the sign...

Страница 65: ...63 UT108 109 OPERATING MANUAL Figure 18 ...

Страница 66: ...of a magnetic resistance sensor is similar to those of a Hall sensor and the testing methods of both sensors are also similar Their normal resistance is generally in a range of 150 Ω to 1 kΩ Refer to the ranges of resistance in various kinds of automotive manuals for the details Figure 19 ...

Страница 67: ...IS type Refer to the servicing handbooks of various kinds of automotive manuals for the detailed position or the negative pole of the ignition coil if the automobile is equipped with a distributor board Refer to the servicing handbooks of various kinds of automotive manuals for the detailed position 4 The normal starting rotation speed of an engine is about 50 RPM to 275 RPM Refer the detailed pos...

Страница 68: ...UT108 109 OPERATING MANUAL 66 Figure 20 ...

Страница 69: ...o see if the solenoid is installed right in the position and the dwell of the meter can also indirectly used for the testing 1 Start the engine of the automobile to achieve a rotation speed of 3000 RPM So far as a GM automobile is concerned set the rotary switch to the DWELL and select 6CYL 2 When the automobile is operating in a short fuel state or in a long fuel state the dwell of the meter shou...

Страница 70: ...UT108 109 OPERATING MANUAL 68 Figure 21 general normal resistance is less than or equal to 10 Ω ...

Страница 71: ...isions for low injection and fuel saving in the early period of the eighties the computer controlled regulators were installed in the automobile and the sensors provided the computer with some data required The Meter is an effective tool for the detection of the operation of a sensor Figure 22 ...

Страница 72: ...sors the zirconia and titania sensors Refer to the different external properties of the two types for the details Testing Procedure 1 Move the oxygen sensor out of the automobile 2 Set the rotary switch to Ω Insert the red test lead into the Ω terminal and the black one into the COM terminal 3 Connect the black test lead probe of the meter to the ground terminal i e cold end of the sensor Warning ...

Страница 73: ...lack test lead into the COM terminal The TITANIA sensor is tested with the Ω Insert the red test lead into the Ω terminal and insert the black test lead into the COM terminal Secure the sensor with a table vice light up the propane burner and add a heat sensor terminal Make its temperature about 660 and exhaust the oxygen from the sensor when the readings can be obtained The ZIRCONIA sensor has a ...

Страница 74: ...rature sensor changes the output resistance through the changes in peripheral temperatures The hotter the sensor is the lower the resistance becomes The temperature sensor is generally used in engine braking air ventilation flow fuel temperature and other equipment Figure 23 ...

Страница 75: ...on sensor is an electrometer or variable resistance It is used for the computer monitoring of the position and direction of a mechanical device The typical position sensors include throttle exhaust recalculating EGR blade air flow and other sensors Testing Procedure 1 The same as in the resistance testing method 2 Connect the red and black test lead probes respectively to the signal test terminal ...

Страница 76: ...UT108 109 OPERATING MANUAL 74 Figure 24 ...

Страница 77: ... MAP sensor in the RPMx10 testing method and set the meter to the number of cylinders in the automobile 3 Taking 4 cylinders 4CYL for example connect the black test lead probe of the meter to the ground terminal i e ground strap connection and connect the red one as illustrated in figure 25 4 Turn on the ignition key but do not start the engine Displayed Values DC Voltage Type Sensor In a vacuum s...

Страница 78: ...UT108 109 OPERATING MANUAL 76 be based on the parameters furnished by the supplier Warning RPM Frequency 120 the number of cylinders ...

Страница 79: ...77 UT108 109 OPERATING MANUAL Figure 26 Figure 25 ...

Страница 80: ...bile Now take 4 cylinders 4CYL for example 2 Connect the black test lead probe of the meter to the ground terminal i e ground strap connection and connect the red one as illustrated in figure 25 3 Turn on the ignition key but do not start the engine Displayed Values DC Voltage Type Sensor The displayed value should be less than or equal to 1V The details shall be based on the parameters furnished ...

Страница 81: ...type φ6x25mm Fuse Protection of A terminal 10A H 240V fast type φ6x25mm Maximum Display 4000 analogue bar graph 41 segments Measurement Speed Updates 2 3 times second Range Auto or manual Polarity Display Auto Overload Display OL Battery Deficiency Display Temperature Operating 00C 400C 32 104 Storage 100C 500C 14 122 Relative Humidity 75 0 to below 30 50 30 to 40 Altitude Operating 2000m Storage ...

Страница 82: ...61326 1 2006 EN61326 2 2006 Battery Type One piece of 9V NEDA1604 or 6F22 or 006P Dimensions HxWxL 180 x 87 x 47mm Weight 370g including holster and battery Safety Compliances IEC61010 CATIII 1000V CATⅣ 600V overvoltage and double insulation standard Certification ...

Страница 83: ...ture 18 to 28 Relative Humidity No more than 75 RH A DC Voltage Range Resolution Accuracy Overload Protection Input impedance 4V 1 mV 40V 10 mV 400V 100 mV 1000V 1 V B AC Voltage Range Resolution Accuracy 40Hz 400Hz Accuracy 400Hz 1kHz 4V 1mV 40V 10mV 1 3 2 3 400V 100mV 1000V 1V 1 2 5 2 5 Around 10MΩ 1000V DC AC 0 5 3 ...

Страница 84: ...se 10 100 of the range C DC millvoltage Range Resolution Accuracy Overload Protection Input impedance 40mV 0 01 mV 400mV 0 1 mV D DC Current Range Resolution Accuracy Overload Protection 400μA 0 1μA 4000μA 1μA 40mA 10μA 400mA 100μA 4A 1mA 10A 10 mA Around 4000MΩ 0 8 3 500AC Fuse 1A H 240V fast type φ6x25mm Fuse 10A H 240V fast type φ6x25mm 1 2 1 2 3 1 5 3 ...

Страница 85: ...rent Range Resolution Accuracy 40Hz 400Hz Accuracy 400Hz 1kHz 400μA 0 1μA 4000μA 1μA 40mA 10μA 400mA 100μA 4A 1mA 10A 10mA Remarks Fuse Protection of μA mA terminal 1A H 240V fast type φ6x25mm Fuse Protection of A terminal 10A H 240V fast type φ6x25mm Displays effective value of sine wave TRMS 10 100 of the range When measuring 5 to 10A 1 2 5 1 5 5 2 5 1 2 10 1 5 10 2 10 ...

Страница 86: ...n 2 measurement greater than 15 minutes F Resistance Range Resolution Accuracy Overload Protection 400Ω 0 1Ω 4kΩ 1Ω 40kΩ 10Ω 1 5 500Vp 400kΩ 100Ω 4MΩ 1kΩ 40MΩ 10kΩ 1 5 5 G Capacitance Range Resolution Accuracy Overload Protection 10nF 10pF 100nF 100pF 1000nF 1nF 10μF 10nF 100μF 100nF 3 5 500Vp ...

Страница 87: ... Input Amplitude a 1 AC DC voltage mode When 40Hz 1KHz a range x 10 except 1000V range a 400V 1000V range When 10Hz 40Hz or 1k Hz 1MHz for refer only 2 AC DC Current mode When 40Hz 1KHz a range x 10 except 10 A range a 4A 10 A range When 10Hz 40Hz or 1k Hz 1MHz for refer only 3 DC millvoltage mode When 100KHz 40mV a 200V rms When 10Hz 1MHz 1MHz 200mV a 10V rms ...

Страница 88: ...junction normal voltage is about 500 mV to 800 mV J Continuity Testing Range Resolution Overload Protection 0 1Ω 500Vp Remarks Open circuit voltage approximate 3V The buzzer does not sound when the resistance value is 30Ω The circuit is disconnected The buzzer sounds continuously when the resistance value is 30Ω The circuit is in good condition ...

Страница 89: ...curacy Overload Protection 4CYL 6CYL 0 1 3 5 500 Vp 8CYL Remark Input Scope 10V in forward impulse Bandwidth 0 5mS L Tach Rotation Speed Testing Range Resolution Accuracy Overload Protection 4CYL 6CYL 10 RPM 3 5 500 Vp 8CYL Remarks Input Scope 10V in forward impulse ...

Страница 90: ...108 109 OPERATING MANUAL 88 Bandwidth 0 5mS Maximum Tach 10000 RPM Tach Displayed Reading x 10 M Temperature UT109 only Range Resolution Accuracy Overload Protection 400C 537 1 1 10 400F 998 2 1 18 500 Vp ...

Страница 91: ... 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 the Meter off when it is not in use and take out the battery when not using for a long ti...

Страница 92: ...ve the 3 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 Fuse 1 1A H 240V fast type φ6x25 mm Fuse 2 10A H 240V fast type φ6x25 mm 6 Rejoin the c...

Страница 93: ...91 UT108 109 OPERATING MANUAL Figure 27 ...

Страница 94: ...e Meter s battery 1 Turn the Meter power off and remove all connections from the terminals 2 Take the Meter out from the holster 3 Remove the screw from the battery compartment and open the battery compartment 4 Take out the battery and replace with a new 9V battery NEDA1604 6F22 or 006P 5 Rejoin the battery compartment and the case bottom and reinstall the screw and the holster This operating man...

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