Overview of LVDT20 rebound displacement sensor:
LVDT20 rebound displacement sensor can be widely used in various industries of the national economy, such as aerospace, machinery, construction, textiles, railways, coal, metallurgy, plastics, chemical engineering, and scientific research institutions, to measure high-tech products such as elongation, vibration, object thickness, and expansion.
DC LVDT has excellent performance, using a convenient single power supply+12-24V DC power supply, electronic circuits sealed in 304 stainless steel metal tubes, can work in harsh environments such as humidity and dust, and output signals of standard 0-5V, 0-10V, 0 ± 5V, 0 ± 10V, 4-20mA, RS485 that can be used by computers or PLC.
Characteristics of LVDT20 rebound displacement sensor:
★ Built in precision linear bearings, good repeatability ★ The probe is made of silicon nitride ceramic balls, with good wear resistance
★ No sliding contacts, long service life ★ DC single power supply, built-in high-performance signal demodulator
★ Two wire 4-20mA current output, three wire 0-5V, 0-10V, 0 ± 5V, 0 ± 10V voltage output, four wires RS485 output
★ Outer diameter Φ 20mm, stainless steel 304 shell, rebound type (customizable pull rod type)
Application scope of LVDT20 rebound displacement sensor:
● Detection of shaft diameter runout ● Testing of textile machinery
● Valve position detection and control ● Roll gap measurement
● Measurement of wear on vehicle braking devices ● Robotics, precision displacement measurement
● Online inspection of automotive parts ● Machine tool and tool positioning, hydraulic cylinder positioning
● Bridge deck displacement detection ● Subway tunnel engineering protection
Technical parameters :
Stroke Length | 5mm,10mm,20mm,25mm,40mm,50mm,100mm |
Output Signal | 0～5V,0～10V,4～20mA,RS485 |
Resolution | ≤ 1um (max) digital output is 16bit |
Linearity Error | ≤±0.25%FS |
Repeatability error | 1um~10um Note: The smaller the range, the smaller the repetition error |
Power Supply | +12～30V DC |
Working Current | Voltage Output: ＜10mA |
4-20mA Output: 4～25mA | |
RS485 Output: 15～40mA | |
Dynamic Characteristics | 3Hz, Pull rod type 50Hz Max |
Shock Resistance | 250g/11ms |
Vibration Tolerance | 10g/2KHZ |
Excitation Voltage | 3Vrms |
Excitation Frequency | 5KHZ |
Temperature Coefficient | Zero Point≤0.01%/℃ |
Sensitivity | ≤0.025%/℃ |
Operation temperature | -25℃～+85℃ |
Selection guidance:
![1704702737693043[1].jpg](/uploads/image/20240109/1704777346315661.jpg "1704777346315661.jpg")
Wiring method:
Attention!!! The sensor pen and transmitter must be used together (with the same pen number as the transmitter number), and it is prohibited to exchange them randomly, otherwise the linear accuracy of the sensor will be severely distorted
1. Color definition of current signal output cable:
Brown - Power supply (+) current input (+)
Blue - Power supply (-) Current output (-)
2. Color definition of voltage signal output cable:
Brown - Power supply (+)
Blue - Voltage output (+)
Black - Power supply (-) Signal output (-)
3. Color definition of digital RS485 signal output cable:
Brown - Power supply (+)
Black - Power supply (-)
Blue - Signal A
White - Signal B
Mechanical installation dimensions of LVDT20 rebound displacement sensor:
Note: The diameter of the sensor for analog output is 20mm, and the diameter of the sensor for digital output is 22mm.
During installation and calibration, measurements should not be taken immediately after touching the measuring head. The buffer zone must be excluded before measurement, otherwise the data will be inaccurate !
The positioning and installation of LVDT requires the use of non-metallic fixtures with low temperature expansion coefficients for fixation. If metal block fixtures are used for installation, it will have an impact on product performance.
Our company has standard fixture accessories for users to choose from, and users can also customize installation fixtures.