Lem has introduced the AT series of AC current transducers. An innovative core material enables split-core current transformer technology to reach new levels of performance for this category of products.
The AT transducers combine an accurate current transformer and signal conditioning electronics in a very light and compact case. They measure only 44,5 x 67 x 36,5 mm with a 16 mm diameter sensing aperture for non-contact measurement. They are thus particularly suitable for installation in tight environments.
Being split-core and either self-powered or loop-powered, they are easy to install and put into operation, which means they can be retrofitted into existing installations without shutting down operations. This ease of mounting, coupled with the transducers' high reliability, reduces installation and maintenance costs.
The transducers have been designed to measure 50/60 Hz 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 5-50 A are available, with a selection of industry standard output types (4-20 mA; 0-5 V d.c. or 0-10 V d.c.).
The AT integrated transducers are intended for realtime process automation, supervision and regulation and principal applications will be in the field of industrial process control and condition-monitoring of equipment such as HVAC, conveyers and pumps.
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