NEC rolls out the current low consumption of MR (magnetic resistance) sensor new product "MRUS74S" and "MRUS74X", will be used in intelligent city of electronic type water meter and set up gas meter.

NEC release data shows, the water meter and gas meter by mechanical to electronic (the use of magnetic sensor for instrument set within the rotating magnet tested way), in addition to the automatic meter reading outside, still can automatically detect leaking and got a flat. This new product has the following three main characteristics.

(1) the current consumption is very small

New product sampling time only 1 μ s, magnetic sensor drive current in 0.3 u A following. So the small batteries can be equipped with sensors, and 10 years with no replacement batteries.

(2) sensitivity is very high

NEC through the improvement of components of MR film process, improve the rotating magnet of the detection sensitivity, MRUS74S sensitivity of 1.0 ~ 2.5 mT (baekho tesla's), and the sensitivity of MRUS74X reached 1.0 mT below. Which can be through the miniaturization of magnets to cut costs and improve the magnetic sensor configuration of degrees of freedom.

(3) divisions decrease, reliability

The new product will be MR components and IC cascade is an organic whole, realize the miniaturization, size of 1.5 mm (width) x 1.8 mm (length) x 0.8 mm (thickness). In addition, the new products in 105 ℃ high temperature environment can still operate normally.

NEC will in the global market new products sales MRUS74S and MRUS74X, and strive to in 3 years in global electronic type water meter gas meter market get 30% of the share.