According to Macro Sensors, its HSER 750 Series LVDT linear position sensors are replacing proximity sensors in automated control systems found in hot-air, heat-staking machinery used in the manufacture of thermoplastic assemblies. As the stake used in the heat staking machinery is pneumatically actuated, LVDT linear position sensors provide feedback to the absolute position of the stake depth to ensure repeatable and robust stake joints. HSER 750 Series sensors are mounted in-line and available in absolute measuring ranges of up to 20 inches. They are hermetically sealed against hostile environments to IEC standard IP-68 while the housing, bore liner, and end washers are TIG welded, providing a hermetic seal free from oxidation-producing faults that may cause leakage. And as sensors are DC powered, there is no need for external AC LVDT signal conditioners. For more information, visit http://www.macrosensors.com/HSE_HSER_750.html.