LEM S.A. has introduced its new high accuracy ITL 900 current transducer for precise measurement of dc, ac and pulsed currents up to ±900A. The ITL 900 is described as the highest accuracy current transducer available on the market, allowing more precise measurement and control of currents in a wide range of industrial, medical and instrumentation applications.
The ITL 900 provides linearity error (εL) of less than or equal to 3ppm over an operating temperature range of +10 to +50°C, offset stability of over four hours less than 0.5ppm, and an offset current temperature coefficient (TCIOE) of less than 0.3ppm/°K.
The new transducer offers a wide measurement bandwidth of more than 200kHz (-3dB), allowing fast current transients to be accurately measured. Other advantages include negligible self-magnetization, a current overload capability, and galvanic isolation between the high-power primary circuit and the electronic secondary circuit.
The new transducer is based on a double fluxgate closed loop technology that has been adapted and improved by LEM. Conventional transducers, based on open loop (uncompensated) Hall effect technology, cannot provide the extremely low non-linearity error, very low noise floor or low thermal offset drift required in many applications such as high performance gradient amplifiers for magnetic resonance imaging (MRI) or precision current-regulated devices like high accuracy power supplies, test bench power analysis calibration equipment, and laboratory and metrology equipment.
The ITL 900 is CE marked and is supplied with a five-year warranty, as are all LEM industrial products.