Multimeter basics

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A multimeter or a multitester, also known as a VOM, is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter can measure voltage, current, and resistance. Analog multimeters use a microammeter with a moving pointer to display readings.

1. BASICS OF BIOMEDICAL
Multimeter
Prepared by Atheena Pandian 01

2. Presentation
Overview
TALKING POINTS
What is Multimeter?
What are the use of Multimeter?
Three Functions of Multimeter
Types of Multimeter
Digital Multimeter
Analog Multimeter
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3. A multimeter or a
multitester, also known
as a VOM, is an
electronic measuring
instrument that combines
several measurement
functions in one unit
WHAT IS MULTIMETER?
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What is the use of
Multimeter?
A typical multimeter can
measure voltage, current, and
resistance. Analog
multimeters use a
microammeter with a moving
pointer to display readings
Atheena Pandian

5. A basic multimeter measures
resistance, voltage and current.
More advanced models can measure
capacitance, inductance, and
temperature
They may also be able to measure
frequency and duty cycle (a
measurement relating to pulse
systems such as fiber optic networks).
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Three Different
Functions

6. Parts of the Multimeter
A Scale
A Needle or Pointer
An Adjustment Screw
A Zero Ohm Selector
A Range Selector Knob
Ports
Test Probes.
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Different multimeters have
different symbols to
measure it (and the
corresponding voltage),
usually "ACA" and "ACV,"
or "A" and "V" with a
squiggly line (~) next to or
above them
Symbol

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Multimeters can either be digital
or analogue
1 Digital Multimeters
2 Fluke Digital Multimeter
3 Clamp Digital Multimeter
4 Autoranging Multimeter
5 Analog Multimeters.
Types of Multimeter

9. DIGITAL MULTIMETER
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A digital multimeter is a test tool used
to measure two or more electrical
values—principally voltage (volts),
current (amps) and resistance (ohms)
IT IS A STANDARD DIAGNOSTIC TOOL FOR TECHNICIANS IN THE
ELECTRICAL/ELECTRONIC INDUSTRIES.

10. ANALOG MULTIMETER
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An analog multimeter is a PMMC
meter. It works based on the
d'Arsonval galvanometer principle. It
consists a needle to indicate the
measured value on the scale.
A COIL MOVES IN A MAGNETIC FIELD WHEN CURRENT PASSES
THROUGH IT. THE INDICATING NEEDLE IS FASTENED TO THE COIL.

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Atheena Pandian
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