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 User Manual 

 

 

MM650 CAT IV True RMS Digital 

Multimeter with LoZ  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Introduction 

 

The Triplett MM650 features True RMS measurements for more 

accurate AC readings and a Low Z setting for eliminating false 

readings caused by “ghost” voltages. Functions include AC/DC 

voltage and current, resistance, continuity, capacitance, frequency, 

duty cycle, temperature, and diode test. The MM650 also offers the 

added convenience of a built-in LED flashlight. This meter is fully 

www.

.com

information@itm.com

1.800.561.8187

Summary of Contents for 614395002251

Page 1: ...readings and a Low Z setting for eliminating false readings caused by ghost voltages Functions include AC DC voltage and current resistance continuity capacitance frequency duty cycle temperature and...

Page 2: ...rly with regard to arc flash potential Use caution on live circuits Voltages above 30 V AC rms 42 V AC peak or 60 V DC pose a shock hazard Do not use if the meter or test leads if appear to be damaged...

Page 3: ...www com information itm com 1 800 561 8187...

Page 4: ...rcuits and Equipment in fixed installations such as 3 phase single phase lighting motors switchgear and distribution panels circuits in commercial Lighting circuits in commercial buildings buildings F...

Page 5: ...DE button 5 Rotary function switch 6 10A input jack 7 A mA input jack 8 COM input jack 9 V Hz Diode Continuity Cap C F Input Jack 10 HOLD Backlight button 11 MAX MIN Average button 12 Flashlight PEAK...

Page 6: ...Display Description www com information itm com 1 800 561 8187...

Page 7: ...nce or Temperature MODE Button Used to select AC or DC Frequency or Duty Cycle Resistance Continuity or Diode Test and C or F REL button The RELATIVE function zeros out the reading on the display and...

Page 8: ...CD display and the meter will display the running average The meter will update the reading when the average value changes 4 Press and hold the MAX MIN AVG button to end MAX MIN Average and return to...

Page 9: ...4 Press and hold the PEAK button to exit PEAK and return to normal operation NOTE The meter does not Auto Range in the PEAK Mode The meter will display OL if the reading exceeds the range When this o...

Page 10: ...r DC Symbol will appear on the LCD display 3 Insert the black test lead into the COM jack and the red test lead into the V input jack 4 Touch the test leads to the circuit under test If measuring DC v...

Page 11: ...s to the circuit under test 5 Read the frequency or duty cycle on the LCD display Low Z AC DC Voltage WARNING Observe all safety precautions when working on live voltages Do not measure frequency or d...

Page 12: ...he voltage on the LCD display AC DC Current Measurements 1 Insert the black test lead into the negative COM input jack 2 For current measurements up to 10A set the rotary function switch to the 10A po...

Page 13: ...AC or DC symbol will appear on the LCD display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the black test probe tip to t...

Page 14: ...display 4 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 will not interfere with the resistance re...

Page 15: ...e and V on the display 4 Touch the test probes to the diode under test Forward voltage will typically indicate 0 400 to 0 700V Reverse voltage will indicate OL Shorted devices will indicate near 0V an...

Page 16: ...3 Press the MODE button to indicate F or C 4 Touch the Temperature Probe head to the part whose temperature you wish to measure Keep the probe touching the part under test until the reading stabilizes...

Page 17: ...battery compartment 6 Install the battery fuse cover and tighten the screw s WARNING To avoid electric shock do not operate the meter until the battery fuse cover is securely fastened to the meter WAR...

Page 18: ...fast blow for the A mA ranges and 10A 1000V 10 x 38mm fast blow for the 10A range 6 Install the battery fuse cover and tighten the screw s WARNING To avoid electric shock do not operate meter until th...

Page 19: ...00V 1mV AC Voltage 60 00V 10mV 3 0 40 digits 600 0V 0 1V All AC voltage ranges are specified from 5 of range to 100 of range Input Protection 600V AC RMS or 600V DC Input Impedance approx 3k AC Respon...

Page 20: ...Function Range Resolution Accuracy of reading digits AC Current 600 0 A 0 1 A 6000 A 1 A 1 5 3 digits 60 00mA 10 A 600 0mA 0 1mA 10 00A 10mA 2 0 8 digits All AC current ranges are specified from 5 of...

Page 21: ...ing digits Capacitance 60 00nF 10pF 5 0 35 digits 600 0nF 100pF 6 000 F 0 001 F 3 0 5 digits 60 00 F 0 01 F 600 0 F 0 1 F 6000 F 1 F 5 0 5 digits Input Protection 600V AC RMS or 600V DC Accuracy is no...

Page 22: ...chase This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as in our sole judgment...

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