Straight Line Displacement Sensors,Xian Chuangjin Electronic Technology Co., LTD_specification/price/image

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WYDC LVDT Straight Line Displacement Sensors

Model: WYDC/LVDT
Description:

The WYDC/LVDT differential transformer displacement sensor has good environmental adaptability. It is widely used to measure various physical quantities that can be changed into displacement in advance and to measure the mechanical quantities (such as tension, pressure, vibration, liquid level, etc.) that can be converted into displacement. Microelectronic technology is adopted in the amplifying circuit of the sensor

The Working Principle

The WYDC/LVDT differential transformer is a sensor that converts the linear displacement into a simulated voltage. Because of its structure as a whole, the durability and environment resistance are excellent, and the temperature range is -20 C ~120 C. Differential Transformer displacment sensot is made of a promary coil, a sesncendary coil and a movable core. Added fixed voltage and frequency of sine wave excitation on primary coil and secondary coil induces response voltage by moveable core.The output characteristics of two of the secondary coil and the excitation signal is a differential output with the frequency of the AC voltage. Through the detection circuit to be output DC voltage displacement. The detection circuit consists of a rectifier diode and a RC filter. The measurement range is a moving travel of a movable iron core, which is usually from a number of +mm to hundreds of mm. When the moving iron core is in the center position, the output voltage is 0 V: the positive and negative voltage, which is proportional to the moving distance, is produced when the movement is left and right. The linearity is less than 1% and the detection precision is m. The error increases when it exceeds the prescribed travel.

Features:

No active contact, high reliability and long life;

The resolution is high and the sensitivity is good.

High linearity and good repeatability.

Wide range of measurement (low resolution when measuring range is wide)

External Size and Technical Parameter

Spec	Measure Range（mm)		A(mm)	L（mm)		△L（mm）	D(mm)	E(mm)
Spec	Measure Range（mm)		A(mm)	MIN	MAX	△L（mm）	D(mm)	E(mm)
5L、2.5D	5、±2.5		180	30	54	15	Φ26	M5
10L、5D	10、±5		180	30	80	15	Φ26	M5
20L、10D	20、±10		180	30	95	15	Φ26	M5
30L、15D	30、±15		180	30	111	15	Φ26	M5
50L、25D	50、±25		230	30	155	15	Φ26	M5
100L、50D	100、±50		280	30	205	15	Φ26	M5
150L、75D	150、±75		380	30	265	15	Φ26	M5
200L、100D	200、±100		400	30	321	15	Φ26	M5
300L、150D	300、±150		540	30	485	15	Φ26	M5
400L、200D	400、±200		670	30	644	15	Φ26	M5
500L、250D	500、±250		830	50	749	15	Φ26	M5
Comprehensive Accuracy		0.25％、0.5％、1％F·S
Output Signals		4～20mA、0～5 or 0～±5V、0～±10V
Power Voltage		12V、15V、24V_DC（standard）
Working temperature		-10～60℃
Zero Shift		0.01％/℃
Sensitivity Drift		0.05％/℃
Dynamic Frequency		0～200Hz

Note: * L means unidirectional, D means bidirectional. *

Transmitter connecting the outsude by cable or connection box;

Wire color	Terminal	Connection
Red	1	V+
Yellow	2	V-/GND
Blue	3	OUT+

a). Electric connection for transmitter with 3 -wire 4～20mADC output:

Reminders when choose models

1. Pay attention to media which is measured is compatible with part of product

2. Anti-exposion products don't have LCD or LED dial

3. Order temperature transmitter with LCD or LED dial, the power voltage shouldn't be less than 20VDC

4. In order to keep stable performance, we suggest user to install lightning protection device

5. If there is strong vibration, strong electromagnetic, RFI, please state before order and indicate in order.

Order Guide

Code

Explanation

Model

WYDC/LVDT

Straight Line Displacement Sensors

Linear Travel

Unit: MM For example: 50MM,100MM

One way

Zero at one side, For example: 10L means 0-10MM

Two way

Zero at center, For example:10D means ±10MM

Accuracy

0.5%

0.3%

0.25%

Output

4-20mA

0-5V

0-10V

±5V

±10V

Connection

3 wire：power+ power- output

4 wire：power+ power- output+ output-

Power supply

24VDC

12VDC

Shell Diameter

Φ26MM

Φ20MM

Zero

Zero at outside:meauring bar is outside,output 4mA or 0V

Zero at inside: meauring bar is outside,output 20mA or 5V

Measuring bar form

Free slid

Spring back

Probe

M5 thread

Ball contact tip

Shell form

All-in-one

Split

Np specific

Specific

Cable length

Unit:M standard:2M