LEM Introduces Compact Split-Core Transducers for AC Current Measurement
LEM S.A. announced its AT series of ac current transducers. The company claims that its innovative core material enables split-core current transformer technology to reach new levels of performance for this product category. At the same time, the new core material enables a reduced price point without compromising quality standards.
The AT transducers combine an accurate current transformer and signal conditioning electronics in a very light and compact case to offer substantial savings in size. They measure only 44.5 x 67 x 36.5 mm (1.75 x 2.6 x 1.4 inches) with a 16 mm (0.63 inch) diameter sensing aperture for non-contact measurement and are, therefore, particularly suitable for installation in tight environments. The split-core transducers can be either self-powered or loop-powered, which means they are easy to install and put into operation and can be retro-fitted into existing installations without shutting down operation. This ease of mounting, coupled with the transducers' high reliability, will reduce installation and maintenance costs.
The transducers were designed to measure 50/60Hz ac signals with RMS (average) computation. They provide an absolute accuracy better than 1.5% of the nominal current over a broad range of inputs. A choice of primary current measurement ranges from 5 to 50A is available, with a selection of industry standard output types (4-20mA, 0-5Vdc or 0-10Vdc). The AT integrated transducers will simplify the development of accurate, reliable and cost-effective solutions for real-time process automation, supervision and regulation. Principal applications will be in the field of industrial process control and condition monitoring of equipment such as HVAC, conveyers and pumps.
