NewTek Position Sensor Detects Part Errors in Automotive Resistance Welding Machines

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Working in conjunction with resistance weld control equipment, the NewTek custom LVDT detects and reports different conditions including weld pin extended position, double part, misloaded part, incomplete weld, weld pin retraction, upside-down nut, wrong or missing part. Based on programmed system spec limits, the position sensor will trigger a go/no go response with each pass.


NewTek Position Sensor Detects Part Errors in Automotive Resistance Welding Machines

Can detect missing or misaligned parts in nut and stud welding

As is fundamental with all LVDTs, the sensor has no contact between its core and coil structure so parts don’t rub together or wear, resulting in longer mechanical life. The linear variable displacement transformer also has internal magnetic shielding that reduces the effects of AC or DC fields.

Quality Digest


Published: Wednesday, August 9, 2023 – 11:59

Designed to fit inside the weld body of the machine, the AC-operated LVDT sensor has a high stroke-length ratio and excellent repeatability that is critical to the application. Remote signal conditioning allows the LVDT to fit inside the small space while being resilient to high levels of shock. With extremely high measurement resolution of ~0.0009 in. (0.02 mm), the position sensor detects minute changes in process conditions.

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For more information, refer to the NewTek website or contact Tutul Rahman at 856–406–6877.