GCA/GCD Series genuine Schaevitz ® gage heads with stainless steel construction enables high performance in environments containing moisture, dirt and fluid contaminants. Electronic components (DC version) are inside the hermetically sealed housing for added protection against hostile conditions. These heavy-duty, high-temperature (AC only) transducers feature long strokes up to ±2.0" (50mm). Maximum spring force is typically 8 oz (226.8g), dependent upon probe position. The working end or probe has a removable black-chromed, hardened tool steel tip threaded (4-48 UNF-2A) to the probe. Schaevitz® replacement and alternate contact tips are available. Tips are also interchangeable with AGD dial indicator tips. Internal construction prevents the core and shaft from rotating as they move longitudinally. Integral electrical connectors allow for easy cable replacement if damage should occur. Installation and adjustment are facilitated by an external ½-20 mounting thread. Two locknuts are provided with each LVDT. GC series gage heads are available in both AC and DC versions. AC-operated units require external signal conditioning (see our range of Instrumentation products on our web site); DC-operated units integrate the core, LVDT and all necessary electronics under a single housing. Use of monolithic, surface mount circuitry eliminates most of the volume, weight and cost of conventional AC excitation, amplification and demodulation equipment.