IAS Sensor Provides Precise Current Measurements

Isabellenhuette has unveiled its precision current sensor with analogue voltage output, suitable for automotive applications, energy management systems and general current-sensing applications. The IAS sensor does not require a digital interface or digital converter. The choice of used shunts ranges from 0.1 to 1mohm, meaning the measurement area and the dynamic range can be set for up to 100dB; with a 500uohm, for example, pulse current of 800A can be measured for 100ms at a resolution of more than 20mA.

The IAS is an alternative to magnetic converters and has advantages such as shunt-based measurement with long-term stability of more than 0.5 per cent. It offers good linearity coupled with high dynamic response and compact dimensions to the point, according to Isabellenhuette. The IAS is also a suitable alternative to DIN shunts. Here, the main benefits lie in the lower losses coupled with greater resolution caused by the use of low-resistance shunts. The sensor also offers high-side measurement, meaning no separate supply voltage is needed.

The typical offset for unidirectional operation is less than 3uV. The operating temperature range can be adjusted within a range of -40 to +125C, depending on the application. The use of a controller enables customers to read out or process the 0-5V output signals.

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