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General Specifications

53

Model UT107: OPERATING MANUAL

Maximum Voltage between any Terminals and
grounding: Refer to different range input protection
voltage.
Fuse Protection of

mA

0

C

terminal: 315mA,

250V, fast type, 5x20mm
Fuse Protection of A terminal:
10A, 250V, fast type, 5x20mm
Measurement Speed: Updates 2-3 times /second.
Maximum Display: 1999.
Temperature:
Operating: 0

0

C ~40

0

C (32

0

F~104

0

F).

Storage: -10

0

C ~50

0

C (14

0

F~122

0

F).

Relative Humidity: 75% @ 0

0

C to below 30

0

C;

50% @ 30

0

C to 40

0

C.

Altitude: Operating : 2000m; Storage: 10000m.
Battery Type: One piece of 9V (NEDA1604 or 6F22
or 006P).
Electromagnetic Compatibility: In a radio field of 1
V/m, Overall Accuracy = Specified Ac 5% of
Range; in a radio field of more than 1 V/m, no assigned
accuracy is specified
Battery Deficiency: Display .
Negative reading: Display .
Overloading: Display

1

.

Equipped with full icons display.
Manual ranging.
Polarity: Automatically display.
Dimensions (HxWxL): 179 x 88 x 39mm.
Weight: 380g. (including holster and battery)
Safety/Compliances: IEC61010: CAT. II 1000V, CAT.
III 600V overvoltage and double insulation standard.
Certification:

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Содержание UT107

Страница 1: ...eration Part 1 Multimeter Basic Testing A DC Voltage Testing B AV Voltage Testing C DC Current Testing D Resistance Testing E Diode Testing F Continuity Testing G 12V Battery Measurement H Temperature Measurement I Frequency Measurement J Measuring Duty Cycle K Dwell Testing L Engine Tach Rotation Speed Testing RPMx10 M Operation of Hold Mode Part 2 Diagnosis of Automotive Troubles A Fuse Testing ...

Страница 2: ...igh 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 General Specifications Accurate Specifications A DC Voltage B AC Voltage C DC Current D Resistance E Diode F Continuity Testing G ...

Страница 3: ...al Multimeter Model UT107 hereafter referred to as the Meter is a 1999 counts 3 1 2 digits manual ranging meter 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 meters In addition to the Dwell Tach and...

Страница 4: ... protection provided by the Meter may be impaired International electrical symbols used on the Meter and in this Operating Manual are explained on page 9 Unpacking Inspection In the event you find any missing or damage please contact your dealer immediately Open the package case and take out the Meter Check the following items carefully to see any missing or damaged part 4 Item Description Qty Mod...

Страница 5: ...efore 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 To avoid harm to yourselves never attempt to input an effective voltage over 60V in DC or 30V in AC Use the proper terminals function and range for your measurements The rotary switch s...

Страница 6: ...ed 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 Turn off the Meter 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 lea...

Страница 7: ...components of the operating engine Ensure that the automobile has stopped automatic transmission or put into neutral gear manual transmission and be sure that it is equipped with brakes and the wheels have been locked Do not place any tool on the automotive battery which will cause a short circuit of the electrodes and in turn lead to any personal injury or damage to a tool or battery Smoking or s...

Страница 8: ... it is probably very difficult to find out where any trouble lies Check any trouble with the air purifier or pipeline system Check any damage to any sensor or the driving gear Check the ignition lead any breakage of any terminal crack on any spark plug or breakage at the insulation of the ignition lead Check all the vacuum hoses any right line shrinkage bend crack fracture or damage Check the lead...

Страница 9: ...al Symbols AC Alternating Current DC Direct Current Grounding Double Insulated Deficiency of Built In Battery Fuse Warning Refer to the Operating Manual Conforms to Standards of European Union 9 Model UT107 OPERATING MANUAL ...

Страница 10: ...The Meter Structure see figure 1 1 LCD display 2 Data Hold button 3 Rotary Switch 4 Input Terminals 5 Power button figure 1 10 Model UT107 OPERATING MANUAL ...

Страница 11: ...tomotive ignition dwell testing Unit degree Automotive engine tach testing Displayed Reading x 10 Unit rpm Functional Buttons Button Operation Performed POWER HOLD Turn the power on and off Press HOLD once to enter hold mode Press HOLD again to exit hold mode and the present value is shown In Hold mode is displayed 12V Duty 11 Model UT107 OPERATING MANUAL Below table indicated for information abou...

Страница 12: ... electric shock or personal injury replace the battery as soon as the battery indicator appears Indicates negative reading Test of diode Continuity test Date hold is active Indicator of connecting test leads into different input terminals figure 2 12 Model UT107 OPERATING MANUAL 1 2 3 4 5 6 Connect test leads ...

Страница 13: ...ough readings may be obtained Please take extra care when measuring high voltages to avoid electric shock Insert the red test lead into the V terminal and the black test lead into the COM terminal Set the rotary switch to an appropriate measurement position in Connect the test leads across with the object being measured The measured value shows on the display 1 2 3 The DC voltage ranges are 200mV ...

Страница 14: ... range is overloaded it is required to select a higher range in order to obtain a correct reading In each range the Meter has an input impedance of approx 10M This loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10k the error is negligible 0 1 or less When DC voltage measurement has been completed disconnect the connection be...

Страница 15: ... when measuring high voltages to avoid electric shock Insert the red test lead into the V terminal and the black test lead into the COM terminal Set the rotary switch to an appropriate measurement position in Connect the test leads across with the object being measured The measured value shows on the display It is the effective value of sine wave mean value response 1 2 3 V The AC voltage ranges a...

Страница 16: ... range is overloaded it is required to select a higher range in order to obtain a correct reading In each range the Meter has an input impedance of approx 10M This loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10k the error is negligible 0 1 or less When AC voltage measurement has been completed disconnect the connection be...

Страница 17: ...to an appropriate measurement position in Connect the test leads in serial to the object being measured The measured value shows on the display 1 2 3 figure 5 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 t...

Страница 18: ...erminal and reduce the range step by step until a satisfactory reading is obtained When DC 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 l l l ...

Страница 19: ...e ranges are 200 2k 20k 200k 2M and 20M Insert the red test lead into the terminal and the black test lead into the COM terminal Set the rotary switch to an appropriate measurement position in range Connect the test leads across with the object being measured The measured value shows on the display 1 2 3 To avoid harm to yourselves never attempt to input an effective voltage over 60V in DC or 30V ...

Страница 20: ...se the equation measured resistance value Y X precision readings of resistance When the resistance reading 0 5 in the short circuit condition please check for loose test leads or other reasons For high resistance 1M it is normal taking several seconds to obtain a stable reading and it is better to choose shorter test lead When there is no input for example in open circuit condition the Meter displ...

Страница 21: ...the junction A good silicon junction drops between 0 5V and 0 8V Insert the red test lead into the terminal and the black test lead into the COM terminal Set the rotary switch to 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 polarity of red test lead is while black test ...

Страница 22: ... resistance of other pathways between the probe tips Connect the test leads to the proper terminals as said above to avoid error display The open circuit voltage is around 2 7V when testing diode The LCD will display 1 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 l l l l l ...

Страница 23: ...ross with the object being measured 1 2 3 4 Open circuit voltage is approx 3V When continuity testing has been completed disconnect the connection between the testing leads and the circuit under test l l The buzzer does not sound when the resistance value is 100 The circuit is disconnected The buzzer sounds continuously when the resistance value is 10 The circuit is in good condition The buzzer ma...

Страница 24: ...bject being measured Red test lead to the positive polarity and black test lead to the negative polarity The measured value shows on the display the unit is V 1 2 3 4 The Meter is only applicable to measure less than 20V non working battery To measure the working battery it is necessary to add up the working loading and the Meter built in loading The Meter has a built in 120 2W loaded resistance t...

Страница 25: ... of the object being measured The measured value shows on the display the unit is 0 C 1 2 3 4 Black Red Please choose a correct temperature probe The included temperature probe can only measure up to 2500 C You need to select another temperature probe for any measurement higher than 2500 C The Meter display 1 when there is no signal input The Meter display its internal nearest temperature value wh...

Страница 26: ... Set the rotary switch to 2kHz Connect the test leads across with the object being measured The measured value shows on the display the unit is kHz 1 2 3 4 figure 10 This measurement method is applicable to input scope 30Vrms When the input scope 30Vrms the input protection circuit may move which cause cannot get any reading When frequency testing has been completed disconnect the connection betwe...

Страница 27: ...lack test lead into the COM terminal Set the rotary switch to Duty Connect the test leads across with the object being measured The measured value shows on the display the unit is 1 2 3 4 figure 11 This measurement method is applicable to input scope 30Vrms When the input scope 30Vrms the input protection circuit may move which cause cannot get any reading When duty cycle testing has been complete...

Страница 28: ... terminal Connect the ends to be tested as illustrated 1 2 figure 12 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 for the specific position If the GM feedback carburetor is tested connect the red probe to the ground terminal or the computer drive of the solenoid Refer ...

Страница 29: ...ted as illustrated 1 2 figure 13 If a DIS ignition system without any distributor board is used in the automobile connect the red test lead probe to 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 ...

Страница 30: ...tation speed of the automobile to be tested should be equal to the displayed value multiplied by 10 For example the actual rotation speed of the engine of the automobile should be 2000 RPM 200 x 10 if the displayed value is 200 and the meter is set at the 6CYL 6 cylinders notch 3 4 M Operation of Hold Mode The Hold mode is applicable to all measurement functions Press HOLD to enter Hold mode Press...

Страница 31: ...ry switch to 200 As prompted at the LCD connect terminal insert the red test lead into the terminal and the black one into the COM terminal Short circuit the red and black test lead probes when the reading of the meter should be displayed between 0 2 and 0 5 If it is more than 0 5 check the test leads to see whether they are well connected Connect the red and black test lead probes in parallel to ...

Страница 32: ...enoid or relay are connected with diodes Check to see if there is any damaged coil Even if the coil is found satisfactory the solenoid or relay may still be damaged The relay may be welded or worn due to the frequent sparking of the contacts The solenoid may be stuck when the coil is in an on position Therefore some potential problems cannot be found in testing C Solenoid or Relay Testing The same...

Страница 33: ...package of the engine starting system consists of a battery engine starting button solenoid and relay starting buttons lead connections and lines During the operation of the engine the charging system keeps the battery charged This system consists of an AC generator voltage calibrator lead connections and circuits The multimeter is an effective tool for the checking of these systems 1 Load Free Ba...

Страница 34: ...nal insert the red test lead into the A terminal and the black one into the COM terminal Cut off the link between the positive pole of the battery and the cable and connect the test lead probes to the circuit Connect the red test lead probe to the positive pole of the battery and the black one to the negative pole of the battery 1 2 3 Warning Do not start the engine of the automobile in testing or...

Страница 35: ...robe to the negative pole of the battery and the red one to the positive pole of the battery Start the engine continuously for 15 seconds and the testing results are shown in contrast 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 1 2 3 ...

Страница 36: ...black test lead into the COM terminal Refer to the LOSS typical trigger voltage circuit See figure 14 Test the voltage between any of the following pairs of points respectively 1 2 2 3 4 5 5 6 6 7 7 8 8 9 8 10 1 2 3 Test the voltage drops caused by the switch cable solenoid or connector Any abnormal voltage drop generally results from an additional resistance The resistance will restrict the curre...

Страница 37: ...ry Lead Connector Wiring 300 mV 200 mV 100 mV 50 mV 0 0 V 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 ...

Страница 38: ...the normal voltage readings being 13 2 V to 15 2 v 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 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 If...

Страница 39: ...nce should be less than 0 5 If it is more check the test lead to see if it is loose or damaged If it is damaged replace it with a new one 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 15 See the detailed positions in various kinds of automotive manuals 1 2 3 4 figure 15 Warning The reading of the testing become...

Страница 40: ...uals for the details For a heater ignition coil repeat the said testing steps 5 6 7 8 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 2 Ignition System High Voltage Damper Testing see figure 16 figure 16 Red Black Mo...

Страница 41: ...bending the lead the reading should remain unchanged 2 3 3 Hall Switch Sensor Testing see figure 17 figure 17 When the tach and dwell are tested in the computer of the automobile a Hall sensor is used The Hall sensor is normally used in the ignition system to detect the position of the camshaft so that the computer of the automobile can set the optimal time for the ignition and the opening of the ...

Страница 42: ...probes in parallel to the signal connect terminal and ground end of the sensor and the meter should display a small ohm When a metal plate blade steel tape etc is inserted into a concave magnetic pole of the sensor the display of the meter will be enlarged or overloaded if the metal plate is moved away the display will become smaller which proves that the sensor is satisfactory 1 2 3 4 5 4 Magneti...

Страница 43: ...ype 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 The normal starting rotation speed of an engine is about 50 RPM to 275 RPM Refer the detailed position ...

Страница 44: ...hich should generally be 14 7 to 1 between the air and the fuel so as to reduce the injection of surplus fuel The testing is used to see if the solenoid is installed right in the position and the dwell of the meter can also indirectly used for the testing 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 D...

Страница 45: ...r equal to 10 1 2 J Engine Sensor Testing see figure 21 figure 21 Red Black To be adapted to the provisions 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 Long Fuel Shor...

Страница 46: ...s prompted at the LCD connect terminal insert the red test lead into the terminal and the black one into the COM terminal Connect the black test lead probe of the meter to the ground terminal i e cold end of the sensor 1 2 3 Warning If the sensor has a 1 or 3 lead outlet the ground terminal is its shell If the sensor has a 2 or 4 lead outlet the ground terminal is its special wiring l l Connect th...

Страница 47: ...inal insert the red test lead into the 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 660F and exhaust the oxygen from the sensor when the readings can be obtained The zirconia sensor has a voltage of 0 6 V or more The titania sensor has a resistance of about 1 M...

Страница 48: ...nsor of the automotive engine is generally less than 300 1 2 3 Position Sensor see figure 23 figure 23 The temperature 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 Heater Temperature Sen...

Страница 49: ...xhaust recirculating EGR blade air flow and other sensors Testing Procedure The same as in the resistance testing method Connect the red and black test lead probes respectively to the signal test terminal and ground terminal Refer to various kinds of automotive servicing manuals for its position and the resistance to be tested 1 2 figure 24 Black Red 4 Absolute Pressure MAP and Baro Sensor see fig...

Страница 50: ...nders 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 20 Turn on the ignition key but do not start the engine Displayed Values DC Voltage Type Sensor In a vacuum state the displayed value is generally between 3 V and 5 V The details shall be based on the parameters furnished by the s...

Страница 51: ...uency type MAF sensor in the RPMx10 testing method and set the meter to the number of cylinders in the automobile Now take 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 21 Turn on the ignition key but do not start the engine Displayed Values DC Voltage Type Sensor The d...

Страница 52: ... it is multiplied by 10 Frequency RPM 30 This only applies to 4CYL l l Frequency Type Sensor In a vacuum state the displayed value should be 330 RPM 5 This only applies to GM low frequency sensors The other low frequency sensors shall be based on the parameters furnished by the supplier ...

Страница 53: ...0 300 C to 400 C Altitude Operating 2000m Storage 10000m Battery Type One piece of 9V NEDA1604 or 6F22 or 006P Electromagnetic Compatibility In a radio field of 1 V m Overall Accuracy Specified Accuracy 5 of Range in a radio field of more than 1 V m no assigned accuracy is specified Battery Deficiency Display Negative reading Display Overloading Display 1 Equipped with full icons display Manual ra...

Страница 54: ...e Resolution Accuracy Overload Protection 200mV 2V 20V 200V 1000V 0 1 mV 1 mV 10 mV 100 mV 1 V 0 5 2 0 8 2 230VAC 1000 VDC or 750 VAC continuous Remark Input impedance Around 10M Range Resolution Accuracy Overload Protection 200V 750V 100mV 1V 0 8 5 1000 VDC or 750 VAC continuous Remark Input impedance Around 10M Frequency response 40Hz 400Hz Displays effective value of sine wave mean value respon...

Страница 55: ...0A For continuous measurement 10 seconds and interval time between 2 measurement greater than 15 minutes l Range Resolution Accuracy Overload Protection 200 2k 20k 200k 2M 20M 0 1 1 10 100 1k 10k 0 8 5 1 5 5 600Vp Range Resolution Overload Protection 1mV 600Vp Remark Open circuit voltage approximate 2 7V The silicon PN junction normal voltage is about 500 mV to 800 mV l l Fuse 315mA 250V fast type...

Страница 56: ...alue is 10 The circuit is in good condition The buzzer may or may not sound when the resistance value is between 10 100 l l l l Range Resolution 400 C 00 C 3 9 00 C 4000 C 1 7 4000 C 10000 C 2 10 Remark Overload Protection Fuse 315mA 250V fast type 5x20mm l 400 C 10000 C 10 C Accuracy Range Resolution Accuracy Overload Protection 20V 10mV 3 5 Fuse 315mA 250V fast type 5x20mm Remark The Meter has a...

Страница 57: ...0 5mS Input Scope Normal signal 100mV when 100Hz 200mV l l l 2kHz Range Resolution Accuracy 1 90 10 90 0 1 Model UT107 OPERATING MANUAL Accuracy Range Resolution Accuracy Overload Protection 4CYL 6CYL 8CYL 3 5 600 Vp 0 10 Remark Input Scope 10V in forward impulse Bandwidth 0 5mS l Automobile signal input scope 10V 4 5 Normal signal input scope 500mV reference only ...

Страница 58: ...ing 58 Range Resolution Accuracy Overload Protection 4CYL 6CYL 8CYL 3 5 600 Vp Remark Input Scope 10V in forward impulse Bandwidth 0 5mS Maximum Tach 10000 RPM Tach Displayed Reading x 10 l l 10 RPM Model UT107 OPERATING MANUAL ...

Страница 59: ...eral 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 time Do not store the Meter in a place of humidity high temperature explosive inflammab...

Страница 60: ...ter Remove the 3 screws from the case bottom and separate the case top from the case bottom Remove the fuse by gently prying one end loose then take out the fuse from its bracket 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 10A 250V fast type 5x20 mm Fuse 2 315mA 250V fast type 5x20 mm Rejoin the ca...

Страница 61: ...he Meter power off and remove all connections from the terminals Take the Meter out from the holster Remove the screw from the battery compartment and open the battery compartment Take out the battery and replace with a new 9V battery NEDA1604 6F22 or 006P Rejoin the battery compartment and the case bottom and reinstall the screw and the holster 1 2 3 4 5 figure 27 END This operating manual is sub...

Страница 62: ...n 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 62 Model UT107 OPERATING MANUAL ...

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