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Your current location is:Home>>邵阳Product>>邵阳Sensors>>邵阳LVDT differential transformer displacement sensor

邵阳LVDT Displacement Sensor Four-wire System

  • Product classification:LVDT differential transformer displacement sensor
  • Number of views:2053
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  • Release time:2024-01-08
  • Overview

I. LVDT displacement sensor four-wire system overview

Differential transformer displacement sensor (LVDT) has the characteristics of high precision, good dynamic characteristics, reliable operation and easy use. Ideal for high precision, high repeatability measurements in quality control and metrology applications. It can be widely used in aerospace, machinery, construction, textile, railway, coal, metallurgy, plastics, chemical industry and scientific research colleges and other industries of the national economy, used to measure elongation, vibration, object thickness, expansion and other high-tech products.

The LVDT displacement sensor four-wire system uses an integrated single-chip solution for outstanding performance. LVDT20 can be reduced by two thirds with the same range length, especially suitable for installation space is small occasions! The probe is made of silicon nitride ceramic with high hardness and wear-resistant material, and the moving part of the measuring shaft is made of precision guide rail. The displacement sensor is equipped with a transmitter that can output the standard DC signal. The four-wire transmitter uses a single power supply +9 ~ 36V DC isolated power supply. Can output signal 4-20mA, 0-5V,0-10V or ±5V,±10V and other signals to choose from.



II. LVDT displacement sensor characteristics

★ Measuring pen diameter Φ8mm, Φ15mm, Φ20mm to choose from

★ The probe is silicon nitride ceramic ball, good wear resistance

★ Measuring range from 0-100MM, high resolution, good repeatability

★ No sliding contact, long service life

★ Four-wire power supply isolation 4-20mA current output, 0-5V, 0-10V or ±5V, ±10V voltage output



III. LVDT displacement sensor application field

● Shaft diameter runout detection                   ● Textile machinery detection

● Valve position detection and control             ● Roll gap measurement

● Vehicle brake device wear measurement       ● Robot, precision displacement measurement

● Auto parts online testing                                ● Machine tool and tool positioning, hydraulic cylinder positioning

● Bridge floor shift detection                             ● Subway tunnel engineering protection



IV. Performance parameters


Displacement range

2.5mm,5mm,10mm,15mm,20mm,25mm,40mm,50mm,100mm

Output signal

420mA05V, 010V,±5V,±10V

Resolution

0.1um(The highestNote: The larger the range, the lower the resolution

Linear error

≤±0.1%±0.25%FS

repetitive error

The highest can up to 1um Note: The smaller the range, the smaller the repetition error

Power supply

+936VDC

Working current

Current 3080mA

dynamic behaviour

Pull rod type 50HzReturn type 20Hz

Tolerance impact

250g/11ms

Vibration limit

10g/2KHZ

Excitation voltage

3Vrms

Excitation frequency

2.5Khz

Temperature coefficient

Zero end ≤0.01%/℃

Sensitivity

≤0.025%/℃

Operating temperature

-25℃+85℃


V. Model Selection

2024.png



Connection method

Color definition of four-wire signal output cable:

Red: - Power supply (+)   Black: - Power supply (-)
Green - signal output +   white - signal output -
The output voltage of the DC regulated power supply must be within the specified service range
四线制接线.png



Machine dimension

 

LVDT8 Pen size


四线LVDT8.png


Note 1: Dead zone must be excluded before measurement

Note 2: The outside diameter of the pen displacement sensor (LVDT) is 8mm. It does not have a circuit demodulator or transmitter inside itself. The external transmitter is connected by means of an aviation plug.


Measuring range

B(mm)

C(mm)

Anteroposterior dead zone(mm)

2.5mm

100

4.5

1

5mm

100

7

1

10mm

106

12

1



LVDT8 Stainless steel mounting bracket



图片1.png



Rebound dimensional drawing



图片1.png


  Parameter     Measuring range            

LVDT20 Rebound series

5

10

15

20

25

40

50

100

Coil length B(mm)

80

80

100

100

100

243

243

338

Length of rod exposed in free state C(mm

7

12

17

22

27

45

55

105

Dead zone before and after each rangemm

1

1

1

1

1

2.5

2.5

2.5

Note: Be sure to exclude dead zone before measurement



Plastic mounting jig dimensions

图片2.png

 

 

 

Note: The positioning and installation of LVDT requires non-metal fixtures with low temperature expansion coefficient to be used for fixing. If metal blocks are used for installation, product performance will be affected.

The company has a standard fixture accessories for users to choose to use, users can also customize the installation fixture.






  • Application

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