UNI-T UT30A Operating Manual Download Page 15 | Manualshive

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C. DC Current Measurement

(figure 4)

Warning

This range is manual range. Do not measure, when value between open voltage
and earth exceeding safety voltage 60V, to avoid damages to the tested Meter
or instrument, and hurt the user.

Measurement Operation (4)

(figure 4)

black red

14

Model UT30A: OPERATING MANUAL

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Summary of Contents for UT30A

Page 1: ...klep elektroniczny Tel e DOKUMENT TEN JEST PRZEZNACZONY DLA KLIENTÓW FIRMY Internetowy sklep elektroniczny WWW DIOLUT PL Kontakt Tel 48 033 4866616 Tel Kom 48 0 888139522 Fax 48 033 48 66617 e mail diolut diolut pl DOKUMENT TEN JEST PRZEZNACZONY DLA KLIENTÓW FIRMY ...

Page 2: ...ion International Electrical Symbols The Meter structure Make Measurements Measurement Operation A DC Voltage Measurement B AC Voltage Measurement C DC Current Measurement D AC Current Measurement E Resistance Measurement F Diode measurement G Transistor hFE Measurement Table of Contents 1 1 Model UT30A OPERATING MANUAL ...

Page 3: ...ecifications Accuracy Specifications A DC Voltage B AC Voltage C DC Current D AC Current E Resistance F Diode Transistor Continuity Maintenance A Hold Power Button 30 29 28 27 29 26 25 24 23 23 21 20 B Fuse and Battery replacement 2 Model UT30A OPERATING MANUAL ...

Page 4: ...tor hFE Continuity and etc It is an ideal carry on tool for users Overview This Operation Manual covers information on safety and cautions Please read the relevant information carefully and observe all the Warnings and Notes strictly Warning To avoid electric shock or personal injury read the Safety Information and Rules for Safe Operation carefully before using the Meter 3 Model UT30A OPERATING M...

Page 5: ... see any missing or damaged part In the event you find any missing or damage please contact your dealer immediately Unpacking Inspection Item 1 2 3 Description Operating Manual Test Lead Holster Note Purchase another protector Qty 1 piece 1 pair 1 piece 4 Model UT30A OPERATING MANUAL ...

Page 6: ... CATII 300V voitage standard with double insulation Use the Meter only as specified in this msnual otherwise the protection provided by the Meter may be impaired CAT I F or local level telecommunication electronic with small transient ovltage CAT II For local level appliances main wall outlets portable equipment ...

Page 7: ...ge higher than DC 60V or AC 30Vrms pay extra attention l Inspect the insulation of the test leads and no damages to the test leads before using the Meter l As soon as the battery indicator s appears replace the battery to ensure accurate readings Rules For Safe Operation 1 Warning Read the manual carefully before use Use the Meter only as specified in this manual otherwise the protection provided ...

Page 8: ...rnal circuit to avoid damages to the meter and danger to the user l Periodically wipe the case with cloth and mild detergent Do not use abrasives and solvents l Take out of the batteries from the case if the meter will be not used for long time to avoid electric shock l Use only 0 5A 250V φ5X20 mm fast acting fuse to replace the bad one Rules For Safe Operation 2 ...

Page 9: ...lectrical Symbols AC Current DC Current Double Insulated Diode Fuse Safety Rules Conforms to Standards of European Union Grounding AC or DC Continuity Test Deficiency of Built In Battery 8 Model UT30A OPERATING MANUAL ...

Page 10: ...iquid Crystal Display 2 Data hold or POWER function Button 3 Rotary Switch 4 Transistor Test Jack 5 Common Input Jack 6 10A Input Jack 7 VΩ mA Input Jack for General Measurement The Meter structure figure 1 The Meter structure figure 1 ...

Page 11: ...o proper position sfter several seconds of self check the meter will enter measuring state when appear on LCD replace a new battery to ensure accurate display Second symbol beside the input jack warns you when testing current and voltage input values must not exceed the limit ...

Page 12: ...Measurement Operation 1 A DC Voltage Measurement figure 2 Warning Never measure voltage value exceeding 500V although it is possible to get the reading which will cause damages to the internal circuit and hurt users figure 2 black red ...

Page 13: ...ts for open Circuit and come to ZERO for short circuit which are both normal 3 For ranges except 400mV input impedance 10MΩ this can cause measuring tolerance at high impedance circuit If circuit impedance is equal or less than 10kΩ you can ignore the tolerance 0 1 or lower 4 The meter would clatter with flash of LCD reading if input exceeding 1000V which warns you pay extra attention Measurement ...

Page 14: ...ning Same as DC voltage measurement however The meter has auto range function with initial range of 4V and input exceeding 750V would make it clatter with LCD glittering which warns you should pay extra attention figure 3 13 Model UT30A OPERATING MANUAL black red ...

Page 15: ...ange is manual range Do not measure when value between open voltage and earth exceeding safety voltage 60V to avoid damages to the tested Meter or instrument and hurt the user Measurement Operation 4 figure 4 black red 14 Model UT30A OPERATING MANUAL ...

Page 16: ...jack black test leads 4 For VΩ mA input jack the Meter has a 0 5A 250V φ5x20mm fuse overloaded if overloaded the fuse will be melt up so replace with a new one with the same specification 5 For 10A input jack it is unfused For your safety every measuring time should equal to or less than 10 seconds times interval should be equal to or over 15 minutes 6 The meter would clatter with glitter of LCD r...

Page 17: ... figure 5 Measurement Operation 6 D AC Current Measurement figure 5 Warning Same as DC current measurement black red 16 Model UT30A OPERATING MANUAL ...

Page 18: ... resistance cut off the power of the object and no charge in capacitor 1 Measuring value inputs from VΩ jack red test leads and COM jack black test leads 2 Wires takes 0 1Ω 0 3Ω tolerance at function of 400Ω when measuring resistance To get an accurate reading you can subtract the short circuit values of the 2 test leads figure 6 mA black red ...

Page 19: ...Diode measurement figure 7 Warning Cut off the power supply of the object to avoid damages to the Meter When measuring diode no charge in capacitor 1 Measuring value inputs from VΩmA jack red test leads and COM jack black test leads 2 When measuring voltage drop of PN for a good silicon semiconductor structure normal positive reading should stay between 0 5V 0 8V Negative display being OL means bl...

Page 20: ...and the black one is negative pole In addition V acts as unit of this range G Transistor hFE Measurement figure 8 1 Check that the transistor is PNP or NPN type at first 2 Connect the transistor to be measured to the corresponding jacks 3 LCD displays hFE reference value 4 Measuring condition Ibo 10µA Vce 3V figure 8 ...

Page 21: ... in capacitor to avoid damages to the Meter Measuring value inputs from VΩ mA jack red test lead and COM jack black test lead If the impedance of measured circuits is equal or less than 80Ω the Meter would clatter it means the circuit is close Display on LCD is circuit resistance 80Ω is a dividing value for OPEN or CLOSE figure 9 black red ...

Page 22: ...e and current up to 400mA l The 10A MAX input terminal is always connected with the red test lead and is used to measure current greater than 400mA but no more than 10A l 10A Terminal Un fused l mA Terminal Fuse 0 5A 250V φ 5x20 mm fast acting fuse l Maximum display is 3999 l Overloading display is 0L l Operating Temperature 0 o C 40 o C 32 o F 104 o F l Storing Temperature 10 o C 50 o C 14 o F 12...

Page 23: ...22 Model UT30A OPERATING MANUAL General Specifications 2 Type 2pieces of Battery Deficiency ...

Page 24: ...0V AC DC current for 400mV others are protected 500V AC or DC Accuracy a reading b digits which guarantee for one year Operating Temperature 23 o C 5 o C Relative Humidity 75 Remark A DC Voltage Range 400mV 4V 40V 400V 500V Resolution 0 1mV 1mV 10mV 100mV 1V Accuracy 0 8 3 0 8 1 1 3 Temperature coefficient 0 1x specified accuracy 1 o C ...

Page 25: ...curacy Specifications 2 B AC Voltage Range 4V 40V 400V 500V Resolution 1mV 10mV 100mV 1V Accuracy 1 2 3 Remark l Input Impedance 10MΩ l Frequency 40 400Hz l Display RMS of Sine Wave Value Average Value Overload protection 500V AC or DC ...

Page 26: ...40mA 400mA 10A Resolution 0 1µA 1µA 10µA 100µA 10mA Accuracy 1 2 1 2 2 1 5 2 l Overload Protection 0 5A 250v fuse Un fuse at 10A measuring time limit is equal or less than 10 seconds and time interval should be equal or over 15 minutes l Measuring voltage drop Full range is 400m V Remark ...

Page 27: ...e at 10A measuring time limit is equal to or less than 10 seconds time interval is equal or over 15 minutes l Voltage drop 400mV for full range l Frequency response 40Hz 400Hz Range 400µA 4mA 40mA 400mA 10A Resolution 0 1µA 1µA 10µA 100µA 10mA Accuracy 1 3 5 2 5 Remark l Display RMS of Sine Wave Value Average Value ...

Page 28: ...ERATING MANUAL Accuracy Specifications 5 E Resistance Remark l Overload Protection All ranges are 230V DC AC current Range 400Ω 4kΩ 40kΩ 400kΩ 4MΩ 40MΩ Resolution 0 1Ω 1Ω 10Ω 100Ω 1KΩ 10KΩ Accuracy 1 2 1 2 2 1 2 2 1 5 2 ...

Page 29: ...nsistor Range hFE Resolution 1mV 1β 0 1Ω Input Protection 230V DC or AC 230V DC or AC Remark 3V when open circuit Ibo 10µA Vce 3V Continuity Beeper Test l Overload Protection 230V DC AC current Remark The buzzer beeps when the value is less than 80Ω 28 Model UT30A OPERATING MANUAL ...

Page 30: ...random value 4 The Meter has Auto power off function which switches the Meter off if it is not used for more than 30 minutes At this time press the button will restart the power Hold and power Button are the same one Maintenance 1 1 Pressing Hold button holds current reding displayed on LCD in open state press it again to release the current reading displayed on LCD 29 Model UT30A OPERATING MANUAL...

Page 31: ...he bottom case 3 Separate the case bottom from the case top 4 Replace the battery or fuse as per the following specification Battery 1 5V AAA NEDA 1604 or 6F22 or 006P Fuse a mA Terminal φ5x20mm 0 5A 250V fast acting b 10A Terminal Unfused 5 Rejoin the case bottom and case top and reinstall two screws and two rubber feet 30 Model UT30A OPERATING MANUAL ...

Page 32: ... END The manual is subject to changes without separate notice 31 Model UT30A OPERATING MANUAL ...

Page 33: ...ong Guan City Guang Dong Province China Headquarters Uni Trend International Limited Address 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 Copyright 2001 Uni Trend International Limited All rights reserved 32 Model UT30A OPERATING MANUAL ...

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