Inductance measurement of Transformer, Relay, Solenoid Coils with LCR Meter

LCR Meter is a multifunctional device tester used for testing various electronic components like capacitor, inductor and resistor.

It adopts the most popular 4.3-inch LCD display, which enables users to read test results more visually and comfortably.

It is a kind of impedance measuring instrument with high speed, wide testing range and 6 bit testing resolution, which can meet the requirements of production line quality assurance, incoming inspection and laboratory measurement.

Inductance measurement of Transformer, Relay, Solenoid Coils with LCR Meter

We are a team of professionals in Sale & Service of Testing Equipment with 20 years of experience in the sales & services of test instruments, our team of experts are here to help you with all of the testing & measuring solutions in India.

At present, the company’s main products are: LCR meter, Hi-pot tester, automatic transformer tester, DC low resistance tester, impulse winding tester, wire harness test system.

 

Working Video of LCR Meter :

 

About LCR Meter :

High-frequency precision bridge is a multi-functional component tester for testing all kinds of electronic components.

It is an impedance meter with high speed, wide test range and 6-bit test resolution.

The main test products include microphones, resonators, inductors, ceramic capacitors, liquid crystal displays, varactor diodes, transformers, etc.

It is low-end components tester with high performance and low cost based on the latest technology platform, which uses the most popular true colo4.3-inch r TFT display.

it is more intuitive and more comfortable for users to read the test results.

Powerful functions and simple operation, 100HZ – 10KHZ multi-frequency point and 0.1% accuracy can meet the requirements of production line quality assurance, purchase inspection and laboratory measurement.

 

Performance Characteristics of LCR Meter

• Four-parameter display, arbitrary parameter combination, up to 12 kinds of measurement parameters.
• Test frequency range: 10Hz—500KHz, resolution is 10mHz.
• 7 inch 16: 9 TFT LCD display, resolution: 800×480 RGB
• Basic measurement accuracy is 0.05%, the maximum test speed can reach 75 times/Sec.
• Built-in comparator, 10 file sorting and file counting function
• Graphical scanning analysis function supports frequency/ level/offset scan, which can help you dissect the device performance easily.
• 2m/4m test cable expansion(optional accessories)
• Internal 100 setting files for storage or call, 500 groups of testing files of U disk are expanded to save or call.
• Software version of the instrument can be upgraded and updated by USB HOST.
• U disk can support file systems with FAT16, FAT32 format.
• Standard RS232C, HANDLER, USB HOST, headphone interface, optional GPIB, LAN interface.

 

Technical Specifications

Type		LCR Meter Model : UC2831
Measurement parameter		L,C, R, | Z|, D, Q，X，ESR，θ（Deg）， θ（Rad）
Measurement frequency		100Hz,120Hz,1kHz, 10kHz
Basic measurement accuracy		0.1%
Test signal level		0.1V, 0.25V,0.3V,0.5V, 1V
Equivalent circuit		Series, Parallel
Math function		Percentage deviation
Range method		Automatic, hold, manual selection
Trigger method		Internal, manual, external, bus
Measurement Speed (≥1kHz）		Fast speed: the fastest 30 times/sec, medium speed: 10 times/Sec, slow speed: 3 times/Sec
Average times		1-255
Delay time		– 60s, 1ms step
Calibration function		Open circuit / short circuit/ load
Test end configuration		Five ends
Display method		Direct reading，Δ%，V/I (Measured voltage / current monitoring）
Display		Main and secondary parameter display 5 bits，4.3 inch true color LCD display
Output resistance		Optional 30 Ω& 100 Ω
Display range
|Z|, R，X，ESR	0.1m Ω — 99.999MΩ
C	0.01 pF — 99999uF
L	0.01 µH — 99999 H
D	0.0001 — 9.9999
Q	0.0001 — 9999.9
θ（Deg）	-179.99° — 179.99°
θ（Rad）	-3.1416 — 3.1416
Δ%	-999.99% — 999.99%
Others
Comparator function	5 files sorting function (only UC2852）
Memory	More than 100 groups of internal setting files for storage/call, more than 500 groups of test files are expanded by U disk
Interface	Standard RS232C, HANDLER, USB HOST, USBCDC, USBTMC, headphone interface, optional GPIB

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Panel Introductions

A Tour of Front Panel

 

 

1．Power on/off
2．Brand and Model
3．USB interface
4．TFT LCD (4.3 inches ; 480*272 )
5．Frame terminal
6．Test leads for measuring the device under test:
HCUR: High current drive
HPOT: High potential sense
LPOT: Low potential sense
LCUR: Low current drive
7．The tool key
8．Soft keys : used to select the area besides the LCD
9．Direction keys : moving cursor
10．OK key : used to determine the input numbers or letters
11．Shortcut menu (MEAS、SETUP、SYSTEM、FILE) 、Enter key, Trigger key
12．Indicator lights for comparing results
13．Blank key for locking the keyboard

 

A Tour of Rear Panel

 

1.   HANDLER interface
2.  USB device interface
3.  RS-232C interface
4.  AC power cord receptacle
5.  Power switch (toggle switch for 110V/220V)
6.  Grounding
7.  GPIB interface (General Purpose Interface Bus)

 

Operation Instructions

 

 

< MEAS DISPLAY >

1) Press POWER key to turn on instrument.
2) The instrument enters test status after self-inspection, as shown in Figure above

Items of this page can be set as follows :
 Function : Cp-(D/Q/Rp)、Cs-(D/Q/Rs)、Lp-(D/Q/Rp)、Ls-(D/Q/Rs)、Z-(deg/r)、R-X、Rp-Q、Rs-Q
 Frequency : 20HZ~200kHz (modify by INCR++、INCR+、DECR-、DECR–)
 Level : 0.100V、0.250V、0.300V、0.500V、1.000V
 Range : AUTO、HOLD、INCR+、DECR-
 Resistance source : 30Ω、100Ω
 Speed : fast/medial/slow
 Monitor V : on/off
 Monitor I : on/off
 Short : on/off
 Open : on/off

 

Quick short-circuit / Quick open
1. after choosing short circuit / open , you will be asked “Keep the fixture short-circuit , then confirm” , the soft key areas will show three options as follow : single frequency vollbild, cancel
2. choose” single frequency” or “vollbild” , the instrument will take clear operation
3. otherwise , the instrument exit the short circuit state and enter the normal measurement display status

 

< BIN NO. DISP >

 

 

1) Press “BIN NO.” to enter < BIN NO. DISP > page
2) Move the cursor to modify the corresponding parameters

Items of this page can be set as follows :
 Compare : on/off

Inductance measurement of Transformer, Relay, Solenoid Coils with LCR Meter

 

< LIMIT TABLE SETUP >

 

Press “MEAS”→”LIMIT TABLE” to enter limit list setup page:

Items of this page can be set as follows :
 Compare : on/off
 Auxiliary : on/off
 Mode : %TOL、ABS TOL
 Nominal value : input by digital key
 Low/High : input by digital key, OK key, soft key

 

 set up the sorting function
1. move the cursor to the “NOM” , input the nominal value
2. move the cursor to the reverse 1 ~ 3 , input the upper or lower percentage limit
3. move the cursor to the floor or ceiling 2nd , input the upper or lower of the
secondary parameters
4. move the cursor to the “COMP” , switch “on”

 

< MEASURE SETUP >

 

1. Press “SETUP” to enter measurement setup page:
2. Move the cursor to modify the corresponding parameters

Items of this page can be set as follows :
 Function : Settings same as measurement display page
 Frequency : Settings same as measurement display page
 Level : Settings same as measurement display page
 Range : Settings same as measurement display page
 Speed : Settings same as measurement display page
 Resistance source : 30Ω/100Ω
 Average ：1~255（input by digital key or INCR+/DECR-）
 Trigger : INT/EXT/MANUAL
 Delay : 0~6000ms (input by digital key)
 Monitor V : Settings same as measurement display page
 Monitor I : Settings same as measurement display page

 

< SYSTEM SETUP >

 

Press “SYSTEM” key to enter system setup page, as shown in figure

Items of this page can be set as follows :
1． Theme : classic/traditional
2． Key sound : on/off
3． Language : English/Chinese
4． Pass word :
 lock system : including the file protection and password
 lock file : file protection
 modify : change password

 

< TEST SETUP >

 

Items of this page can be set as follows :
1． Beeper : on/off
2． Pass beep : on/off
3． Fall beep : on/off
4． Bias source : INT/EXT
5． HANDLER MODE : clear/hold
6． Trigger edge : rising edge/failing edge
7． Auto LCZ : on/off

< INTERFACE SETUP >

Press “SYSTEM”→”COMM SETUP” to enter < TEST SETUP > page

Items of this page can be set as follows :
1. Interface mode : RS-232C、GPIB、USBTMC、USBCDC .
2. Baud : INCR+、DECR-(4800、9600、19200、38400、115200)
3. Data bit : 6/7/8
4. Stop bit : 1/1.5/2
5. Parity : none/odd/even
6. Tx term : LF/CR/LFCR
7. BUS ADDR : 0~31

 

< ABOUT SYSTEM >

 

Press “SYSTEM”→”ABOUT SYSTEM” to enter < ABOUT SYSTEM > page

System functions are as follows :
 Reset : system Settings of Instrument reset and restart
 Factory settings : the instrument is returned to the state of factory
 Firmware Upgrade
 Exit : Return to < system Settings > page

 

< Files Setup >

 

Press “FILE” to enter < FILES SETUP > page

Press “FILE” again to change INT/EXT

 

The instrument’s measurement parameter, such as frequency and level, measurement setups, comparator’s limit data can be stored in nonvolatile storage in the form of files.

When they’re needed, they can be loaded directly from file menu to save time. And the latest saved and loaded file will be automatically loaded when the instrument is turned on next time.

File operation steps :
A. Refer to the existing file
1) use direction key to check files
2) input the corresponding serial number of files , then press “OK”

B. Save parameters to files
1) move the cursor to the serial number of files which need to be stored , then press
soft key of “save” .

C. load parameters from files
1) press “FILE” , Switch to the page of Files list
2) move the cursor to the object file
3) press the soft key of “load”
D. Copy the file to the E (USB)
1) Connect the USB flash drive
2) move the cursor to the object file , press the soft key of “copy to E :”

 

Remote Control

This LCR model has the RS232C serial interface which can be used to remotely control UC2836/UC2858X . This chapter provides the information about the interface and how to use the interface.

RS232C Interface Introduction

The RS232C interface can be used to remotely control the UC2836/UC2858X. All operations from the front panel can be performed by a computer via the serial interface.

RS232C Connection

RS232C Standard now is widely used as the serial communication standard. RS232 stands for Recommend Standard number 232 and C is the latest revision of the standard.

The serial ports on most instruments use a subset of the RS-232C standard. The full RS-232C standard specifies a 25-pin “D” connector of which 22 pins are used.

 

Measurement Functions

Measurement parameters
L: inductance,  C: capacitance,  R: resistance
Z: impedance,  X: reactance
D: dissipation,  θ: phase angle,  Q: quality factor

Range

UC28xx totally has 9 ranges: 10Ω, 30Ω, 100Ω, 300Ω, 1kΩ, 3kΩ, 10kΩ, 30kΩ, 100kΩ.
Please refer to the following table for range and its corresponding measurement range.

It’s recommended to select range auto mode mostly, to avoid incorrect measurement caused by wrong selection of range . But in some special cases, range should be held, such as measurement of the same type in batch and sorting test, in order to improve efficiency, speed and stability. Inductance’s bias test should be performed at held range.

Trigger mode

Internal:  When the trigger mode is set to internal trigger mode, the instrument continuously repeats measurements.
External:  When the trigger mode is set to external, the instrument performs a single measurement every time a low-to-high transition TTL level signal is applied to the Handler interface on the rear panel.
Manual:  When the trigger mode is set to manual trigger mode, the instrument performs a single measurement every time when TRIGGER key on the front panel is pressed.

Measurement delay
Delay time: time from trigger to start. 0 to 60s are programmable with a resolution of 1ms.

Measurement speed
Measurement speed can be affected by test frequency, integral time, value of component, display mode, range mode, average times and comparator. And the following parameters are evaluated at the status of frequency of 10kHz, range hold, comparator off, no communication interface, which is possibly maximum values:

FAST: 30meas/sec (f≧1kHz)
MED: 10meas/sec (f≧1kHz)
SLOW: 3meas/sec (f≧1kHz)

At the frequency of being lower than 1kHz, measurement speed will slow down. And transformer parameter measurement at the same conditions, especially resistance measurement, will have lower speed.

 

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About Us

We are a high-tech enterprise engaged in sales and service of test instruments. At present, the company’s main products are: LCR meter, Hi-pot tester, automatic transformer tester, DC low resistance tester, impulse winding tester, wire harness test system.

After years of customer accumulation and product market recognition, we have become an influential brand in the industry.

“Quality first, customer satisfaction” is always our first goal. Quality is the life of an enterprise.

For this reason, we strive for excellence, optimize the design, improve the performance of products, and focus on the details of each product.

At the same time, we are also actively expanding overseas business. We gradually integrate the technology and experience accumulated for many years into the international competition system, to create a marketing system in Asia and European countries.

More details, please contact freely :

PM Electronics

Contact : Deepanshu Saxena

Mobile : +918800622761

WhatsApp : https://wa.me/918800622761

Email : [email protected]