Fluke Digital Multimeter

Why Buy A Fluke Digital Multimeter

Why Buy A Fluke Digital Multimeter

fluke digital multimeter

The Fluke Digital Multimeter is one of the most versatile RMS meters, used as a home or professional devise. 

Fluke offers different options when shopping for a multimeter, with the 87-5 being one of the most versatile. 

This design is a digital multimeter, with several features that maximize it's flexibility.

The Fluke is created to work with a higher level of measurements, with better accuracy and resolution.  It also comes with features to trouble shoot and solve questions with motor drives, power distribution, in-plant automation and more.

Additional functions include both auto and manual readings, with a thermometer built in.  This means only one instrument for multiple jobs!

Fluke offers a lifetime warranty on its products.  This multimeter will provide state-of-the-art technology with practical and dependable functions.

Fluke meters come with some of the best reviews in the industry.  These multimeters have consistently been at the top of the list for brand choices.  When shopping for a Fluke Digital Multimeter, this is one product that will meet all your expectations for durability, accuracy and convenience.

Here's Fluke Digital Multimeter Selections:

Fluke 115 Compact True-RMS Digital Multimeter...

Customer Review:
Click Here for More Info




 

Fluke 87-5 Digital Multimeter...

Customer Review:
Click Here for More Info




 

Fluke 803293 11 Amp 1000 Volt Fluke Digital Multim...

Customer Review:
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$15.92

 

Sinometer AC/DC Auto/Manual Range Digital Multimet...

Customer Review:
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$59.95

 

Fluke 116 Digital Multimeter...

Customer Review:
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$194.95

 


Today's Discussion

how do you get the internal resistance of the fluke 77 digital multimeter?

Reply
Mario
Most multimeters have an extremely high internal resistance so as to not draw too much current away from the circuit being measured. One best way to measure it is to build a circuit with a dc power source (say 5V) and two high resistance resistors of the same value (ie. 10MΩ) connected in series. Theory tells us that if we were to measure the voltage drop across one of the resistors, it should be 2.5V (Vr = Vdc*(R/2R) --> Vr = Vdc/2). However, when we measure the actual voltage drop, the theory doesn't hold true. What we have now is that we are measuring the voltage drop across the resistor that is in parallel with the internal resistance of the multimeter (Vr = Vdc * [ (R||Rm) / (R||Rm + R ]). Knowing Vr, Vdc, and R, one can solve for Rm (Meter internal resistance).



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