The main features of the meter are as follows:

　　Modular hardware structure and configurable application software, can use pulse, 4 ~ 20mA, RS485, HART, etc. as signal receiving field instrument

　　The collected data of the watch;

　　Able to detect on-site flow, temperature, and pressure signals, and perform calculations of working condition flow, standard flow and mass flow;

　　Has a network interface, can execute the standard modbus TCP / IP protocol, and can also be used as an Internet access port for network data exchange;

　　Has two USB interfaces for reading data and expanding peripheral devices;

　　With power failure memory function, it can continue to accumulate the total flow after power is restored.

　　The main technical parameters

　　Main processor system configuration

　　CPU: RAM core processor;

　　Storage space (ROM) 512M;

　　Memory (RAM) 512M;

　　SD card expansion supports up to 64G (the SD card must be inserted when the meter is powered on);

　　100M adaptive Ethernet port (implement Modbus TCP / IP protocol or TCP / IP protocol);

　　2 USB2.0 ports, can be connected to HUB for expansion;

　　1 RS232 interface, can be connected to standard embedded thermal printer;

　　1 RS485 interface, implementing Modbus protocol (can be customized according to user requirements);

　　Standard 7-inch color capacitive touch screen with a resolution of 800 × 480;

　　Slave processor system configuration

　　CPU: 32-bit Cortex-M3, running frequency is 16MHz;

　　Program memory is 128K FLSH / EE;

　　Data memory: 8K SRAM;

　　Analog input: 6 channels, AD conversion resolution is 24 bits (Σ-Δ), and the minimum sampling rate is 5 times / second;

　　Pulse input: 2 channels (multiplexed with channel 5 and channel 6);

　　Switch output: 2 channels;

　　HART input: 1 channel (multiplexed with channel 1, the inspection instrument does not have this function).

　　Working parameters

　　Power supply voltage: 220V / AC (variation range: 160 ~ 245V / AC);

　　Ambient temperature: 5 ~ 40 ℃;

　　Measurement error: analog quantity≤0.1%

　　External power supply (transmitter) power: 24V; ≤200mA;

　　Dimensions: 210 × 170 × 105;

　　Installation method: panel mounting; opening size: 152 × 152.