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In precision manufacturing, every micron-level error can mean the rejection of an entire batch of products. Traditional contact measurement is prone to wear and interference, while complex programming and debugging can be a real headache. Is there a solution that can achieve non-contact, high-precision distance measurement while making installation and commissioning as simple as pressing a switch?
KJT WJT Series Inductive Distance Measurement Sensors are the answer. The WJT08, WJT12, and WJT18 models use eddy-current non-contact measurement technology at their core and integrate an innovative single-point self-learning function, allowing high-precision displacement detection to move beyond complicated programming and achieve accurate setup with just one click.
The WJT Series is an inductive distance measurement sensor developed by KJT for high-end precision manufacturing. It uses advanced eddy-current technology to achieve non-contact, high-precision measurement of displacement, distance, and position changes in electrically conductive metal materials.
The product features a linearized calibration curve and extremely low standard dispersion, delivering stable and repeatable measurement results. No additional programming cost or complex reference measurement method is required. It can be used directly on the production line right out of the box.
1. Single-Point Self-Learning — One-Click, No Programming
With the innovative single-point self-learning function, users only need to press a button and complete one self-learning process at a specified position. The sensor then outputs a linear signal, and the slope automatically adapts to the application requirements. Installation errors are eliminated directly inside the sensor, with no secondary calibration required, greatly reducing deployment costs. Even when the measurement range changes dynamically, such as in shaft deformation measurement, it can still handle the task easily.
2. Micron-Level Accuracy — Industrial-Grade Stability
The WJT Series offers ultra-high resolution and excellent temperature stability, with accuracy reaching the micron level. Long measuring distance, high-temperature stability, high consistency, and a rugged structure make it outstanding in position measurement, angle monitoring, belt tension control, sag compensation, and low-frequency vibration detection.
3. Integrated System — Wide Temperature Range and Pressure Resistance
The measuring system integrates the controller, probe, and integrated cable. Calibration for both ferromagnetic and non-ferromagnetic materials is completed before leaving the factory. Unique temperature compensation technology ensures extremely high accuracy even under fluctuating ambient temperatures. The standard probe withstands temperatures up to +125°C, while customized wide-temperature versions from -30°C to +180°C are available. Pressure resistance can reach up to 10 bar, allowing easy integration into customer machinery.
4. Multi-Channel Parallel Operation — No Mutual Interference
When multiple eddy-current sensors operate simultaneously, KJT provides a new frequency allocation solution. Each channel works independently without synchronization cables, completely eliminating mutual interference between systems and meeting the requirements of complex production lines for synchronized multi-point detection.
The WJT Series has been widely used in industrial scenarios with extremely high requirements for accuracy and reliability:
Precision measurement: vibration, amplitude, gap, runout, deflection, deformation, waviness, inclination, displacement, distance, position, and elongation.
Online inspection: dimensional inspection, dimensional tolerance screening, component identification, double-sided thickness measurement, and insulator thickness measurement.
Heavy industry: tensile strength testing in steel plants, molten aluminum level measurement, and rubber position detection.
High-end manufacturing: wafer positioning measurement, spindle axial/radial runout, and spindle expansion monitoring.
Automotive industry: gap detection between engine cover and cylinder block, second-order piston motion, and valve lift measurement.
Energy and power: power turbine monitoring, motor gap measurement, and oil film thickness detection.
Rail transit: railway vehicle detection and track geometry parameter monitoring.
Special environments: underwater measurement, high-temperature and high-pressure conditions, and precision aerospace assembly.
From semiconductor wafers to aircraft engines, from molten metal monitoring to underwater precision measurement, the WJT Series provides OEM integrators and end users with a reliable displacement detection solution featuring excellent cost performance and customization capability.
KJT Electric has been deeply engaged in the sensor field for many years. Its products have passed multiple international certifications, including CE, RoHS, and explosion-proof certification. The company owns multiple utility model and appearance design patents, has been recognized as a National High-Tech Enterprise and Jiangsu Technology-Based Small and Medium-Sized Enterprise, and has established industry-university-research cooperation with institutions such as Nanjing Institute of Technology.
KJT products have served many industry leaders, including aviation industry companies, China Railway, China Shipbuilding, State Grid, China North Industries Group, China Huaneng, PetroChina, China Railway Construction Corporation, XCMG Group, Aluminum Corporation of China, and Maanshan Iron & Steel Group. The company has won broad recognition with stable quality and reliable delivery.
