Product Design & Development

Spring-loaded Lvdt

Wednesday, January 26, 2005

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Spring-loaded Lvdt

Available in standard measurement ranges of 0.100 to 2.00 in., the GHSAR/GHSDR 750 Series of rugged, spring-loaded ac/dc-operated LVDTs are constructed entirely of stainless steel. Engineers can rely on this new series to provide dimensional or position measurement in automotive factories, metal fabricating shops, paper and plastic film plants, industrial process automation applications, and motion control systems. In addition, the LVDTs can provide large shaft TIR measurements in environments such as forges and foundries. The units can withstand dirt, oil, water, and machine coolants typically found in industrial settings. Their electronics and coil windings are hermetically sealed to protect against hostile environments, in accordance with IEC standard IP-68. Furthermore, the GHSAR features a through-bore design that enables air purging of the sensor’s bearing so potential contaminants are easily removed. A radially mounted sealed connector facilitates electrical termination. As this connector decreases the installed length of the LVDTs, the units are effective in applications that have space restrictions. To aid in the replacement of damaged cables, a detachable mating connector is provided with every unit. The LVDTs consist of a spring-loaded shaft that runs in precision sleeve bearing and is connected to the LVDT core. Thanks to this precision sleeve bearing, the unit provides measurement repeatedly of 0.000025 inches (0.6 m) or better, and maximum linearity error of ۪.25 percent of full range output. Operating from 3.0 Vrms (nominal), GHSAR 750 units can be connected to any standard LVDT signal conditioner and passed to a gauging column display, digital recorder, or computer-based data acquisition system. GHSDR 750 units feature built-in electronics that operate from a 䔳 Vdc input and provide a pre-calibrated zero to 䔮 Vdc output that complements many PLCs, digital indicators, A/D converters, computer-based data processors, and QC data collection systems. Pricing for the new GHSAR/GHSDR starts at $350.00.
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