Product Overview

Goldcard Smart domestic ultrasonic gas meter was developed based on self-developed ultrasonic technology, which adopts compact design with no moving parts, it has the advantages of high reliability, high accuracy, wide measurement range ratio.

Working Principle

The domestic ultrasonic gas meter calculate the gas flow rate V by measuring the time TUP at which ultrasonic wave was transmitted from the upstream transducer to downstream transducer, and the time Tdown at which ultrasonic wave was transmitted from downstream transducer to upstream transducer, then calculating the flow rate of the gas according to the cross-sectional area S of the flow channel.

Main Advantages

● Ultra-high sensitivity：Subtle gas flow can be detected ;
● Wide range ratio: The range ratio can be up to 375:1 ;
● High reliability：No moving parts, long-term operation is more reliable and no losses of measurement accuracy.
● Strong anti-interference ability: Digital metering signal output, undisturbed by magnetic field;
● Temperature compensation: Built-in temperature sensor, outputting compensated cumulative volume.

Gas Safety

● Reverse flow: meter can detect reverse gas flow, and judge if meter installed wrongly, close valve automatically.
● Abnormal tiny flow: when detects continuous tiny flow, meter will automatically close the valve to prevent gas leakage ;
● Installation and disassemble detection: when detects air intrusion, meter will report to the system and automatically close the valve;
● High temperature detection: when detects high temperature above the high temperature alarm threshold, meter will automatically close the valve;
● Water ingress detection: when detects water ingress, the valve will be closed automatically to ensure pipe network safety ;

IoT Based Smart Gas Solution

Realize remote meter reading, remote monitoring, remote valve control, remote billing etc., through wireless technology.

Specification