Traditional diaphragm gas meters are widely used in city gas development due to the advantages of mature technology, stable performance and low cost. With the development of IoT and microelectronics technology, IoT based smart diaphragm meters have started to dominate the gas metering industry. So does the electronic measurement technologies, such as ultrasonic, is getting more and more attentions, for its advantages of contactless measurement, no moving parts, no pressure loss, extremely high measurement accuracy, etc. which perfectly relief the pain points with diaphragm gas meters, like abrasion caused by complex structure, easy to be affected by gas condition and so on.

Ever since Goldcard commenced researches on ultrasonic gas sensors years ago, it has made breakthroughs in the fields of ultrasonic transducers, time measurement chips, automatic time difference calculation methods, and simultaneous sensing of gas components, that were applied to ultrasonic gas meters and ultrasonic flow meters in large scales. Therefore comes Goldcard ultrasonic gas meters that embedded with typical merits of ultrasonic measurement technology, which also supports gas density detection function. Moreover, Goldcard patented ultrasonic gas sound paths design upon computational fluid dynamics simulation can further guarantee measurement accuracy and stability, reduce costs and improve anti-contamination, thereby enhance the overall performance of ultrasonic gas meters.

General features of ultrasonic gas meter:

• Ultra-wide measurement rangeability, high sensitivity, free from noise

• Temperature and pressure compensation

• Strong anti-interference ability (no magnetic components)

• Multiple security alarm mechanisms (abnormal flow, low battery, dismantling meter, etc.)

• Compact design, small size, easy to install

In addition, based on its over tens of millions of smart gas experiences, Goldcard attached smart control module and wireless communication technologies to the Infinity ultrasonic gas meter, so that through a stable and reliable wireless network (NB-IoT, GPRS, LoRaWAN, Sigfox, etc.) , end-to-end connection with the cloud platform can be achieved, and realizes remote meter reading, remote valve control, real time gas consumption status monitoring, remote gas prices adjustment, abnormity alarms, as well as data analysis to support decision making, etc. Also, in combination with mobile phone APP, services and functions such as remote recharge and real-time interaction with users can be completed.