Macro Sensors Introduces Spring Loaded LVDTs

Macro Sensors has unveiled the GPA 750 Series Spring-Loaded AC-LVDT. Incorporating customer suggestions, GHSA 750 Series, the GPA 750 has been designed and packaged to deliver a lower cost gaging alternative, without sacrificing the traditional quality and performance expected from Macro Sensors.

Internally, the sensor consists of a spring loaded probe/shaft assembly (force of 6 to 20 ounces, model dependent), which runs along two precision sleeve bearings. The end of the shaft is connected to the core of an LVDT. The coil of the LVDT is located inside the body. As the probe is depressed, the relative position of the core to the coil changes, thereby increasing the output of the LVDT. The output can then be connected to any standard (differential input) LVDT signal conditioner to create a variety of analog or digital outputs, or directly to the customers own conditioning electronics/system.

Externally, all machined parts are constructed of stainless steel. The front end of the GPA 750 Series has a 1/2-20 UNF 2A thread on the housing, allowing the user to install the LVDT into a mating threaded part, or alternatively, can be ‘bulkhead’ mounted using the two furnished hex nuts. The supplied contact tip on the probe end is an AGD standard number 9 made from chrome plated hardened tool steel, and is fully interchangeable with other AGD contact tips.

The electrical interface is via a 3 foot long, 32AWG, 6 conductor, Teflon insulated/shielded cable. The entire package meets IEC standard IP-61. Designed specifically to meet the needs of the industrial gaging and OEM market place, the GPA 750 Series is available in a variety of ranges from ±0.050 inch (±1.25 mm) to ±2.00 inches (±50.0 mm), with a maximum linearity error of ±0.25% of full range output (best-fit / least squares method).