## How to Use a Capacitance meter?

March 2nd, 2015 | Posted in Others
Tags: , ,

Last time, Nasir told us about measuring current with ammeters, today here’s an article about capacitance meter…

### What is a Capacitor?

A capacitor is a bi terminal charge storing device which stores the electric charge between its two conducting plates which are separated by a resistance. This is the basic intro of a capacitor which summarizes its working in the shortest possible way. It is necessary to know about the functioning and working of a capacitor before going into the details of a Capacitance meter.

Capacitor stores energy but it is not as efficient as other energy storing devices like batteries etc. The main reason for this is that it discharges quite quickly and that is one of the reasons that it is quite useful in applications where rapid energy is required.

### What is a capacitance meter?

The ability of a capacitor to store electric charges is known as its capacitance, and that is what a capacitance meter is used for. A capacitance meter is used for measuring the capacitance of a capacitor. It measures the rate of charge storage and returns the value of capacitance in a digital fashion, usually but not always.

Analogue capacitance meters are also available which give the reading in the form of a needle moving on a scale, but they are quite old and imprecise. Nowadays digital capacitance meters are being widely used because of their easy handling and reading, and increase accuracy.

### Measuring Capacitance with a capacitance meter

A capacitance meter can be in the form of an individual device or incorporate inside a digital multi-meter. It has two output probes which can be easily connected to the two legs of the capacitor to measure its capacitance, as shown below:

This can be measured in two ways which are as follows:

1. By measuring the rate of Voltage rise
2. By passing a high frequency alternating current

Each of this process will be described precisely below…

#### Measuring the rate of voltage rise

When a capacitance meter is connected with a capacitor it charges it with a preset value of current. When the capacitor is charged and discharged in this way by the capacitance meter, the capacitance meter measures the rate at which the voltage rises in that capacitor due to that current.

The capacitance is then measured as a function of that voltage rise. The slower the voltage rises in the capacitor, the larger will be the value of its capacitance.

#### By passing a high frequency alternating current

Another method of measuring the capacitance through the capacitance meter is by passing a high frequency alternating current. When the alternating current is passed at a very high frequency the resulting change in the voltage is measured and the capacitance is determined as a function of that resulting voltage.

### Uses of a Capacitance meter

Capacitors are being widely used now-a-days in applications where a fast energy source is required, due to the fact that they discharge energy at a rapid rate. Often a capacitor comes with an illegible capacitance such that it is not feasible to use without knowing its actual rating.

A capacitance meter comes in use for measuring the unknown capacitances in the circuit which is essential for the proper working of the circuitry.

### TOP 5 best sellers Capacitance meter on amazon

Sale 2019Bestseller No. 1
67 Reviews
Sale 2019Bestseller No. 2
72 Reviews
Multimeter Voltage Tester Digital Battery Circuit Automotive Temperature Frequency Continuity...
• MULTIMETER with 6000 COUNTS - this auto ranging multimeter displays up to 6000 counts, it is an NCV, AC and DC Voltage Tester, it is and Automotive Tester, Temperature and Battery Tester, Diode and...
• ACCURACY AND HIGH PRECISION - your best True RMS electrical tester is an extremely and precise tool that will satisfy even most sophisticated professional electricians and amateurs as well. This...
• LCD BACKLIT and FLASHLIGHT- your portable multifunction circuit tester equipped with large LCD backlit screen and Flashlight that provides you easy-to-read measurements even in darker conditions
• EVERYTHING YOU NEED IN ONE BOX - this digital multimeter comes with all the essential stuff, so you can start using it immediately. The box includes 1 current voltage tester 4 x AA 1.5 V batteries,...
• 100% RISK FREE PURCHASE - we are absolutely sure about the quality of the multimeter, that's why it has an incredible ONE YEAR warranty. If something goes wrong contact our customer team for a...
Sale 2019Bestseller No. 3
244 Reviews
Meterk Digital Clamp Meter Multimeter 4000 Counts Auto-ranging Multimeter with AC/DC...
• 【MULTI-PURPOSE CLAMP METER WITH TRUE RMS AUTO-RANGE】: Accurate AC/DC Voltage, AC/DC Current, Frequency, Duty Cycle, Diode, Capacitance and Resistance Measurement.
• 【WITH NCV & LIVE LINE TEST FUNCTION】: Non-contact Voltage Detection Function with a Sensor to Detect Voltage and Avoid Electric Shock without Touching Any Wires. Light and Sound Alarm If Detects...
• 【CONTINUITY TEST & OVERLOAD PROTECTION】: Designed to Safely and Accurately Confirm the Circuit Conducts Electricity with Low Voltage Indication and Overload Protection. Light Alarm If Detects the...
• 【EASY TO USE AND READ】: Small and Portable to Carry and Use. High Resolution, Large Backlit LCD Screen Improves Visibility. The flashlight can Access Measurement in a Dark Place. Low Battery...
• 【YOU WILL GET】: Meterk Digital Clamp Meter, 2*Test Leads, 3*AAA Batteries(Inside the Clamp meter), User Manual(English + French + German + Italy + Spanish) , 1 * Storage Bag
Sale 2019Bestseller No. 4
600 Reviews
Fluke 117 Electricians True RMS Multimeter
• VoltAlert technology for non-contact voltage detection
• AutoVolt automatic AC/DC voltage selection. DC millivolts - Range : 600.0 mV, Resolution : 0.1 mV
• Low input impedance: helps prevent false readings due to ghost voltage
• Large white LED backlight to work in poorly lit areas
• True RMS for accurate measurements on non-linear loads.Operating temperature:-10°C to +50°C.Battery life:400 hours typical, without backlight
Sale 2019Bestseller No. 5
475 Reviews
AstroAI Digital Multimeter, TRMS 6000 Counts Volt Meter Manual and Auto Ranging; Measures Voltage...
• WIDE RANGE of tests for Voltage, Current, Resistance, Continuity, Capacitance, Frequency; Tests Diodes Transistors, Temperature
• PROFESSIONAL LEVEL features include Auto-Ranging capability, and True RMS for measuring both AC Current and Voltage
• EASE OF USE: Convenient features like Data Hold, Large LCD Backlit Screen, Auto Shut-off and Hanging Magnet, and Kickstand make taking and recording measurements easier than ever before
• IDEAL FOR COMMERCIAL settings where it can handle the demands of a long workday, from the durable exterior to the wide range of heavy-duty capabilities
• Built-in F400mA/600V and F10A/600V explosion-proof ceramic fuse tubes; Double Protection, more secure and reliable; The fuses can protect the multimeter effectively; Overload protection on all ranges

Nasir.

There are many other such measuring devices which are of extreme use in everyday electrical applications. To know more about them stay tuned and keep visiting us.

### Comment(s) to “How to Use a Capacitance meter?”

1. Zech.Takira says:

Thanks very much for this post. It helps me with something to present to my class.

Electrical engineering Community, license