Compact split-core transducers for AC current measurement

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 with a 16 mm diameter sensing aperture for non-contact measurement and are, therefore, 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 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 have been designed to measure 50/60Hz AC signals with RMS (average) computation. They provide an absolute accuracy better than 1.5 percent of the nominal current over a broad range of inputs. A choice of primary current measurement ranges from 5A to 50A are 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.

As with all other LEM products, the AT series transducers benefit from the company’s proven
high-quality approach to manufacturing and are backed by a five-year guarantee.