A Critical Analysis of a Product Voltmeter

Pages: 3 (359 words) Published: October 12, 2010

Critical analysis
Of Product

What is voltmeter?
A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. Some voltmeters are intended for use in direct current (DC) circuits; others are designed for alternating current (AC) circuits. Specialized voltmeters can measure radio frequency (RF) voltage.A multimeter or a multitester, also known as a volt/ohm meter or VOM.

Types of voltmeter
• Multi Functional Electric Power Meter
• Harmonic Electric Meter
• Digital Panel Voltage Meter
• Digital Panel Current Meter
• Digital Panel Active Power Meter 
• Digital Panel Reactive Power Meter 
• Digital Panel Power Factor Meter
• Digital Panel Frequency Meter
• Digital Panel Integrated Meter
• N Series Digital Display Meter
• Electric Measuring Transmitters 
• Motor Protection Controller
• Single phase AC voltage meter
• Three phases AC voltage meter
• Single Channel DC voltage meter

Analog voltmeters
Digital voltmeter

Circuit diagram

Quantities measured- multimeters can measure many quantities as- • Voltage in volts.
• Current in amperes.
• Resistance in ohms.
Additionally, multimeters may also measure:
• Capacitance in farads.
• Conductance in Siemens.
• Decibels.
• Duty cycle as a percentage.
• Frequency in hertz
• Inductance in henrys
• Temperature in degrees Celsius or Fahrenheit.
Digital multimeters may also include circuits for:
• Continuity that beeps when a circuit conducts.
• Transistors
Burden voltage
Sensitivity and input impedance
Alternating current sensing...
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