LCR Meters

LCR Meters are a type of electronic test equipment used to measure the inductance (L), capacitance (C) and resistance (R) of an electronic component.

When there is a change in the current flowing through a conductor, a corresponding change is induced in the voltage in it and in conductors surrounding it. This property is known as inductance. The ability of a body or a conductor to store electrical charge is known as capacitance. The opposition that a conductor offers to the passage of electric current through it is called resistance.

Most LCR meters use AC signals to measure the impedance of components. When using an LCR meter make sure you are using the correct settings as the wrong settings can result in poor measurement accuracy. Both analogue and digital LCR meters are available. The analogue are less expensive and the digital variety are seen to be more accurate.

Uses of an LCR Meter

A digital LCR meter is used to measure the impedance flowing through a Device Under Test (DUT). It measures the voltage (V) across it, the current (I) flowing through it, and the phase angle between current and voltage. Subsequently, you can determine all the impedance parameters from these three factors.

Thus, an LCR meter measures the following parameters related to a circuit:
● capacitance
● resistance
● dissipation factor
● quality factor
● current
● voltage
● phase angle between the current and voltage
● conductance
● susceptance

Types of LCR Meters

Handheld LCR meters: Small, lightweight and portable. They have multiple test frequency and the data it captures can be transferred to a PC via a USB port. Typically used in field operations.

Benchtop LCR meters: Big and bulky. They can be operated on programmable frequencies and can be controlled via a computer.

Techniques used with LCR Meters

Bridge Method: This method is used for measuring frequencies below 100 kHz.

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Part Details Brand Maximum Capacitance Measurement Maximum Resistance Measurement Maximum Inductance Measurement Battery Life Battery Type Bench/Handheld Display Type Power Source Dimensions Weight Height Length Maximum Operating Temperature Minimum Operating Temperature Model Number p Width Plug Type
BK Precision, Model BK830C LCR Meter 199.99mF Handheld Type BK Precision 199.99 - - 70 h 9V Alkaline Handheld LCD Battery 41 x 90 x 190mm 350g 190mm 41mm +40°C 0°C BK830C 90mm -
BK Precision, Model BK880 LCR Meter 20mF, 10 MΩ, 1kH Handheld Type BK Precision 20mF 10 MΩ 1kH 6 h Ni-MH Handheld LCD Battery 41 x 90 x 190mm 348g 190mm 41mm +40°C 0°C BK880 90mm Banana Plug
BK Precision, Model BK890C LCR Meter 50mF Handheld Type BK Precision 50 - - 70 h 9V Alkaline Handheld LCD Battery 41 x 90 x 190mm 350g 190mm 41mm +40°C 0°C BK890C 90mm -
BK Precision, Model BK894 LCR Meter Bench Type BK Precision - - - - - Bench TFT Mains 280 x 370 x 88 (Without Bezel) mm, 369 x 408 x 108 (With Bezel) mm 5kg 88 mm, 108 mm 280 mm, 369 mm +40°C 0°C BK894 370 mm, 408 mm -
BK Precision, Model BK895 LCR Meter Bench Type BK Precision - - - - - Bench TFT Mains 280 x 370 x 88 (Without Bezel) mm, 369 x 408 x 108 (With Bezel) mm 5kg 88 mm, 108 mm 280 mm, 369 mm +40°C 0°C BK895 370 mm, 408 mm -
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