TQ-7DN series IC card flowmeter controller can be matched with various industrial flowmeters (turbine/roots) with pulse signal output function; combined with gas sales management system based on IC/CPU card, it can achieve a new trade settlement method of “purchase first and then use" for gas consumption. It integrates the technologies of a number of fields including computer network, communication technology, smart IC card technology, key security technology etc. It is a new type of flow control device with prepaid function.

• With high-performance micro-power processor and special circuit design, powerful software and superior performance.

• Supporting two modes of recharge of amount (yuan) / gas volume (m3).

• Having RS485 communication interface, which is convenient for networking with the host computer to realize remote meter reading, remote recharge and remote price adjustment.

• Adopting large-capacity memory, with historical data storage and query function, infinite reading and writing and the data will not be lost after power failure.

• Regular communicating with the flowmeter to synchronously accumulate the gas consumption volume to avoid signal error of pulse metering.

• When the remaining amount/gas volume is lower than the set lower limit, a margin shortage alarm function will be activated.

• The LCD screen visually displays various data and instrument status.

• Intelligent CPU card conforming to the financial card standard of the People's Bank of China is adopted and combined with the advanced encryption key management system to ensure the legitimate interests of users.

• Built-in ESAM module for key authentication of CPU card operation, rendering high security.

• The gas sales system can issue various types of function cards such as user cards, price adjustment cards, application transfer cards, and acquisition cards etc.

• The card has a data write-back function, which is convenient for learning the working status of the instrument and user operation information.

• The installation can be performed horizontally or vertically.