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Operating Instruction for

True RMS Digital Multimeter

Please read this manual before switching the unit on.

Important safety information inside.

MT874

600V AC/DC TRMS

MULTIMETER

INSTRUCTION MANUAL

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Summary of Contents for MT874

Page 1: ...MT874 600V AC DC TRMS MULTIMETER INSTRUCTION MANUAL...

Page 2: ...2...

Page 3: ...neral Speci cations 9 4 Battery Installation 10 5 Button Function 10 5 1 Data Hold Button 10 5 2 Mode Rel Button 10 5 3 Auto Power Off 10 6 Operating Instructions 11 6 1 DC Voltage Measurement 11 6 2...

Page 4: ...urer the protection provided by the equipment may be impaired 1 2 Safety Symbols This symbol adjacent to another symbol terminal or operating device indicates that the operator must refer to an explan...

Page 5: ...ore than 30ft 10m from a Cat III source Outlets more than 60ft 20m from a Cat IV source Equipment in xed installations such as 3 phase motors switch gear and distribution panels Lighting circuits in c...

Page 6: ...LCD Display 2 MODE RELATIVE Button 3 HOLD Button 4 Function Switch 5 10A Input Jack 6 Positive Input Jack 7 COM Input Jack 8 Lanyard Hole 9 Test Lead Holders 10 Battery Cover Lock 11 Tilt Stand 12 Ba...

Page 7: ...Power O 2 Display Hold 3 Relative 4 Diode Test 5 Continuity 6 Units of Measure List 7 Alternating Current 8 Direct Current 9 Minus Sign 10 Battery Status 11 Measurement Reading 2 2 Symbols Used on LCD...

Page 8: ...2 0 5 digits 200mA 10A 1 2 5 digits AC Current 0 1mA 0 01A 2 0 5 digits All AC Current ranges are specified from 5 of range to 100 of range AC Current bandwidth 50Hz to 1kHz Sine 50Hz to 60Hz All wav...

Page 9: ...A batteries Auto Power Off Approximately 15 minutes Fuses mA A ranges 200mA 600V fast blow A range 10A 600V fast blow Operating Temperature 0 to 50 C 32 to 122 F Storage Temperature 10 to 60 C 14 to 1...

Page 10: ...batteries to make sure that they are still good and that they are properly inserted 5 Button Function 5 1 Data Hold Button The Data Hold function allows the meter to freeze a measurement for later re...

Page 11: ...when connected to a circuit CAUTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch...

Page 12: ...voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the highest VAC Position 2 Insert the black test l...

Page 13: ...the function switch to the 10A range and insert the red test lead banana plug into the 10A Input Jack 4 Remove power from the circuit under test then open up the circuit at the point where you wish to...

Page 14: ...Positive Input Jack 3 For current measurements up to 10A AC set the function switch to the 10A range and insert the red test lead banana plug into the 10A Input Jack 4 Remove power from the circuit u...

Page 15: ...t lead banana plug into the Positive Input Jack 3 Touch the test probe tips across the circuit or part under test it is best to disconnect one side of the part under test so the rest of the circuit wi...

Page 16: ...plug into the negative COM Input Jack Insert the red test lead banana plug into the Positive Input Jack 3 Press the Mode Rel Button to indicate and on the display 4 Touch the test probe tips to the ci...

Page 17: ...the Positive Input Jack 3 Press the Mode Rel Button until and V appears in the display 4 Touch the test probes to the diode under test Forward voltage will indicate 0 4V to 0 7V Reverse voltage will...

Page 18: ...ect the 1 5V or 9V BAT Position using the function select switch 3 Connect the red test lead to the positive side of the 1 5V or 9V battery and the black test lead to the negative side of the 1 5V or...

Page 19: ...ntly pulling it out 4 Install the new fuse into the holder 5 Always use a fuse of the proper size and value 200mA 600V fast blow for the 200mA range 10A 600V fast blow for the 10A range 6 Put the fuse...

Page 20: ...www major tech com www majortech com au sales major tech com info majortech com au MAJOR TECH PTY LTD...

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