Flow sensor supports electronic gas meter

Omron Corp. and STMicroelectronics have teamed up to develop a complete solution for electronic gas meter flow sensors. A flow sensor to be used in ST's turn-key gas meter solution is the first device to be created through the joint effort.

The new solution combines an Omron transducer with an ST front-end chip, forming a complete stand-alone system. The makers say the solution features leading-edge MEMS micro-thermal sensor technology and is intrinsically compensated for both temperature and pressure variations. It has a built-in circuit that compensates for the multiple gas composition variations. The device is dust-resistant.

The sensor is mounted on a small PCB measuring 7.2x8.6cm. ST said it is highly accurate and consumes very little power. It also features built-in motor drivers for valve control and protection against temperature and vibration effects.

An ultra-low power STM8L152 microcontroller with 32KB flash memory, an LCD display driver, the STLM20 temperature sensor, the LIS332AR accelerometer and the M41T82 real-time clock, as well as power-management and motor-control devices, are available on the sensor board.

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