LEM, HAB, current sensors

LEM introduces family of current sensors for automotive battery-monitoring applications

News Release from: LEM SA
22/12/2006

LEM has introduced the for automotive battery-monitoring applications. The 12 sensors in the family offer primary current measurement ranges from ±20 to ±120A, a high accuracy of ±2 per cent across the operating temperature range of -40 to +125˚C and a choice of voltage or PWM outputs.

The sensors are based on open-loop, Hall-effect transducers that simplify both installation and servicing by removing the need to cut the cable carrying the measured current. They operate from a unipolar 5V supply and provide a fully ratio metric solution for the voltage output devices. Response time is less than 10ms.

A watertight housing and sealed connector provide full environmental protection in under-bonnet applications.

Principal applications are expected to be in the measurement of battery-pack current in electric, hybrid and conventional vehicles.