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To avoid electric shock or personal injury, read the

“Safety Information” and “Rules for Safety Operation”
carefully before using the Meter.

Warning

Model 72-8155: OPERATING MANUAL

Overview

This Operating Manual covers information on safety and
cautions. Please read the relevant information carefully
and observe all the

Warnings

and

Notes

strictly.

Digital Inductance Capacitance Meter

Model

72-8155

(hereafter referred to as “the Meter”) is a 3 1/2 digits with
steady operations, fashionable design and highly reliable
hand-held measuring instrument.

The

Model 72-8155

will measure capacitance, inductance,

resistance, transistor hFE and test diodes. It will also test
continuity with an audible buzzer.

Содержание 72-8155

Страница 1: ...ment Operation A Measuring Resistance B Diode and Continuity Test C Capacitance Measurement D Inductance Measurement E Transistor hFE Measurement General Specifications Accuracy Specifications A Resistance Test B Continuity Diodes C Capacitance Test D Inductance Test E Transistor Maintenance A General Service B Replacing the Battery C Replacing the Fuse 3 4 4 5 7 8 9 10 11 11 13 15 17 18 19 20 20 ...

Страница 2: ...Model 72 8155 OPERATING MANUAL 2 ...

Страница 3: ...tions Please read the relevant information carefully and observe all the Warnings and Notes strictly Digital Inductance Capacitance Meter Model 72 8155 hereafter referred to as the Meter is a 3 1 2 digits with steady operations fashionable design and highly reliable hand held measuring instrument The Model 72 8155 will measure capacitance inductance resistance transistor hFE and test diodes It wil...

Страница 4: ...ged please contact your dealer immediately Safety Information This Meter complies with the standards EMC EN61326 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 and may damage the Meter or the equipment under test A Note identifies the inf...

Страница 5: ... apply voltage to the Meter The rotary switch should be placed in the correct position and no change of range made during measurement to prevent damage to the Meter Use the proper terminals function and range for your measurements Do not use or store the Meter in an environment of high temperature humidity explosive inflammable and strong magnetic field The performance of the Meter may deteriorate...

Страница 6: ...ny 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 Remove the battery when not used for a prolonged period to avoid damage to the Meter Periodically check the battery as it may leak after some time If leakage is apparent the battery sh...

Страница 7: ...RATING MANUAL 7 International Electrical Symbols Ground Double Insulated Low Battery Continuity Test Diode Capacitance Test Inductance Test Fuse Warning Refer to the Operating Manual Conforms to Standards of European Union ...

Страница 8: ...RATING MANUAL 8 The Meter Structure see figure 1 1 LCD Display 2 L C switch 3 Transistor Jack 4 Resistance Diode and Continuity Input Terminal 5 Capacitance and Inductance Input Terminal 6 Rotary Switch 7 Power figure 1 ...

Страница 9: ...provides information regarding the functional button operation Button Description Press the Power down to turn the Meter on Press the Power again to turn the Meter power off Press L C down to enter the Capacitance measurement mode Press L C up to enter the Inductance measurement mode ...

Страница 10: ...ansistor Test Diode test The continuity buzzer is on Farad The unit of capacitance pF Picofarad 1 x 10 12 or 0 000000000001 farads nF Nanofarad 1 x 10 9 or 0 000000001 farads µF Microfarad 1 x 10 6 or 0 000001 farads mF Millifarad 1 x 10 3 or 0 001 farads Ohm The unit of resistance k kilohm 1 x 103 or 1000 ohms M Megaohm 1 x 106 or 1 000 000 ohms H Henry The unit of Inductance mH Millihenry 1 x 10...

Страница 11: ...e high voltage capacitors before measuring resistance Warning The resistance ranges are 20 200 2k 20k 200k 2M 20M and 2000M Insert the red test clip into the terminal and the black test clip into COM terminal Set the rotary switch to range Connect the test clips across with the object being measured The measured value shows on the display 1 2 3 To measure resistance please connect the Meter as fol...

Страница 12: ...from the test clips Then use the equation measured resistance value Y X precision readings of resistance The Meter displays 1 when there is no input for example open circuit situation For high resistance measurement 1M it is normal to take several seconds to obtain a stable reading When resistance measurement has been completed disconnect the connection between the test clips and the circuit under...

Страница 13: ...nductor component place the red test clip on the component s anode and place the black test clip on the component s cathode The display shows the diode forward voltage drop s nearest value 1 2 3 Use the diode test to check diodes transistors and other semiconductor devices The diode test sends a current through the semiconductor junction and then measures the voltage drop across the junction A goo...

Страница 14: ...put terminals of the Meter l l l Testing for Continuity Insert the red test clip into the terminal and the black test clip into the COM terminal Set the rotary switch to Connect the test clips across with the object being measured The beeper sounds continuously when the resistance value of the tested circuit 10 The beeper may or may not come on when the resistance value of the test circuit 10 The ...

Страница 15: ...decrease the range step by step until a satisfactory reading is obtained and the overload icon 1 is not showing Insert the red test clip into the CAP terminal and black test clip into the CAP terminal For small value capacitor measurement insert the capacitor into the small value jack When testing polarized capacitors use the red test clip on the capacitor s positive lead and the black test clip o...

Страница 16: ...e essential when measuring large capacitors When the tested capacitor is leaking or damaged and the tested value is not stable the capacitor may have problems You need to use other tools or equipment to check and confirm When capacitance measurement has been completed disconnect the connection between the test clips and the circuit under test and remove the test clips from the input terminals of t...

Страница 17: ...uld first short circuit the test leads and note the measured inductance value of the leads Then the correct reading is the measured reading minus the short circuit reading The small value jack on the surface of the meter should be used when measuring small value inductors The Meter cannot check the quality of the inductance When inductance measurement has been completed disconnect the connection b...

Страница 18: ...responding Transistor Jack The Meter displays the tested transistor s nearest value When transistor measurement has been completed disconnect the connection between the test clips and the circuit under test and remove the test clips from the input terminals of the Meter l Model 72 8155 OPERATING MANUAL 18 E Transistor hFE Measurement see figure 7 figure 7 1 2 3 4 Note ...

Страница 19: ...erating 0 o C 40 o C 32 o F 104 o F Storage 10 o C 50 o C 14 o F 122 o F Relative Humidity 75 0 o C 30 o C 50 31 40 o C Altitude Operating 2000 m Storage 10000 m Battery Type One piece of 9V Alkaline NEDA1604 or 0062 or 6F22 or 006P Low Battery Display Dimensions 6 77 H x 3 27 W x 1 50 D Weight Approximate 11 oz including battery Safety Compliances EMC EN61326 Certification l l l l l l l l l l l l...

Страница 20: ...the resistance value of the test lead Subtract this value from the measurement value to obtain the correct tested value l l l Accuracy a reading b digits guarantee for 1 year Operating temperature 23 o C 5 o C Relative humidity 75 Temperature coefficient 0 1 x specified accuracy 1 o C Model 72 8155 OPERATING MANUAL 20 Accuracy Specifications A Resistance Test Range Resolution Accuracy 200 2k 20k 2...

Страница 21: ... Discharge all high voltage capacitors before testing capacitance l l l Model 72 8155 OPERATING MANUAL 21 B Continuity Diodes Range Resolution Overload Protection Function Diode Continuity 1mV 1 250V rms Remarks C Capacitance Test Range Resolution Accuracy Testing Frequ ency Voltage 2 000nF 20 00nF 200 0nF 2 000µF 20 00µF 200 0µF 600µF 0 001nF 0 01nF 0 1nF 0 001µF 0 01µF 0 1µF 0 001mF 1 5 4 5 Refe...

Страница 22: ...ed transistor s NPN PNP nearest value 0 1000 Model 72 8155 OPERATING MANUAL 22 E Transistor Range Resolution Remarks hFE Vce 5 8V I bo 10µA Testing Condition 1 D Inductance Test Range Resolution Accuracy Tested Frequ ency Current 2mH 20mH 200mH 2H 20H 0 001mH 0 01mH 0 1mH 0 001H 0 01H 2 8 5 5 5 15 1kHz 150µA 100Hz 15µA Remarks ...

Страница 23: ... not allow water inside the case Warning 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 power 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 hi...

Страница 24: ...als Remove the screw from the battery compartment and separate the battery compartment from the case bottom Remove the battery from the battery compartment Replace the battery with a new 9V alkaline battery NEDA1604 or 0062 or 6F22 or 006P Replace the case bottom and battery compartment and reinstall the screw 1 2 3 4 5 Model 72 8155 OPERATING MANUAL 24 B Replacing the Battery see figure 8 figure ...

Страница 25: ...om 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 0 315A 250V fast type fuse 5x20 mm Replace the battery compartment and the case top and reinstall the screw Replace the case bottom and case top and reinstall the sc...

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