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Kaifeng Instrument LJS-1000 Flow Computer (Digital flow counter)
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Kaifeng Instrument LJS-1000 Flow Computer (Digital flow counter)

LJS-1000 flowrate computer (hereinafter referred to as “the instrument”) adopts 32-digit ARM processor as the main controller with 800480 capacitive touch color screen. The device is expanded with 512M ROM space, and is capable of recording the acqu…

Product Overviews

Features And Functions


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Technical Parameters

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Industry Applications

CPU: RAM core processor;

Storage space (ROM) 512M;

Memory (RAM) 512M;

SD card expansion supports max 64G(SD card is required when the instrument is working after power on);

100M self-adaptive Ethernet port (executing Modbus TCP/IP protocol or TCP/IP protocol);

2-channel USB2.0 interface, connect with HUB for expansion;

1-channel RS232 interface, it can be connected with standard embedded thermal printer;

1-channel RS485 interface, executing Modbus protocol (customized according to users requirements);

The standard configuration includes 7color capacitive touch screen, resolution is 800×480;


Configuration of slave processor system

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

Program memorizer is 128K FLSH/EE;

Data memorizer: 8K SRAM;

Analog value input: 6-channel, AD conversion resolution is 24-digit (Σ-Δ), lowest sampling rate is 5 times/s;

Pulse input: 2-channel (multiplexing with channel 5, channel 6);

Switching value output: 2-channel;

HART input: 1-channel (multiplexing with channel 1, measuring instrument without this function).


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