UNI-T UT51-55 Operating Manual Download Page 15 | Manualshive

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D. Maintenance
I. General Service

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Model UT51-55: OPERATING MANUAL

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Summary of Contents for UT51-55

Page 1: ...t with steady function and highly reliable hand held measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core and has full range overload...

Page 2: ...ion degree 2 overvoltage category CAT I 1000V and CAT II 600V and double insulation Use the Meter only as specified in this manual otherwise the protection provided by the Meter may be impaired l CAT...

Page 3: ...not change the circuit l Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents l International Electrical Symbols Low Battery Earth Ground Safety Rules Doubl...

Page 4: ...F to 122 0 F l Altitude Operating 2000m Storing 10000m l Relative Humidity Max relative humidity 80 for temperature up to 31 o C decreasing linearly to 50 relative humidity at 40 o C l Low Battery di...

Page 5: ...ther ranges is 750Vrms or 1000Vp p B 2 Alternating Current Voltage AC Voltage Input impedance All ranges are 10M Frequency 40Hz 400Hz Overload protection 200mV is 250VDC or AC RMS All other ranges is...

Page 6: ...se 5x20mm at 10A range For UT52 53 54 55 315mA 250V fast acting fuse 5x20mm No fuse at 20A range Max current input For UT51 10A The measurement time for high current should be less than 10 seconds max...

Page 7: ...5mA 250V fast acting fuse 5x20mm No fuse at 20A range Max current input For UT51 10A The measurement time for high current should be less than 10 seconds maximum and the interval time between two meas...

Page 8: ...2 UT53 UT54 UT55 Accuracy 0 8 1 0 8 3 1 2 5 10 10 B 7 Frequency Range Resolution UT51 Accuracy UT52 UT54 UT55 UT53 2kHz 20kHz 1Hz 10Hz 2 5 1 5 5 Voltage at open circuit 700mV 200M range open circuit v...

Page 9: ...nuity Beeper Comment Measuring Condition Range Display diode forward voltage near value Unit mV Forward DC current abt 1mABackward DC voltage abt 2 8V Voltage at open circuit abt 2 8V B 8 Temperature...

Page 10: ...C Making Measurements 1 On Off Switch 2 Capacitance jack 3 Liquid Crystal Display 4 Temperature jack 5 Rotary switch 6 Transistor jack 7 Input jack Model UT51 55 OPERATING MANUAL 10...

Page 11: ...Caution Caution Model UT51 55 OPERATING MANUAL 11...

Page 12: ...Caution 1 Please refer to DC Current Caution 1 2 3 Caution Model UT51 55 OPERATING MANUAL 12...

Page 13: ...reading does not effect accuracy 1 To avoid damage of the Meter or the equipment under testing disconnect circuit powers and discharge capacitors before measuring capacitance 2 Connect capacitor to t...

Page 14: ...C 7 Measuring Frequency Model UT51 55 OPERATING MANUAL 14...

Page 15: ...15 D Maintenance I General Service Model UT51 55 OPERATING MANUAL...

Page 16: ...the following procedure To replace the Meter s fuse 1 Disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the M...

Page 17: ...ll two parts of tilt stand see diagram 3 figure1 figure2 figure3 E Accessories 1 A book of users manual 2 A pair of test lead 3 A pair of WRN 01B bread temperature probe for UT53 and UT55 ONLY 4 A pie...

Page 18: ...ice G Using Strap 1 Put the front end of the strap through the round metal of the Meter see part 1 of the below diagram 2 Put the bottom end of the strap through the front part and tide it up see part...

Page 19: ...19 Model UT51 55 OPERATING MANUAL...

Page 20: ...elopment District Hu Men Town Dong 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...

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