Oxygen flow meter and heat meter wireless 4G/Lorawan mqtt Protocol cloud platform Remote Monitoring

https://zhuanlan.zhihu.com/p/2011794330906547856
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IOT Technology Co., Ltd， (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.
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Oxygen flow meter:
heat meter
Gas flow meterMeasurement accuracy level 2 or above, with RS485 interface,Modbus Rtu communicationRange 0-100L/min with an accuracy of ± -1.5% - FS, suitable for oxygen gas media; (2 times per second, collecting 128 sets of data per cycle); Working power supply: 85~264VAC/8~36VDC; Flow velocity range: (0.25-10) m/s (resolution 0.001m/s);

Measurement accuracy level 2 or above, with Modbus Rtu communication; Measurement cycle: ≤ 500ms (2 times per second, 128 sets of data collected per cycle); heat unit:Jijiao ErAvailable in kilocards and BTUs; Heat consumption calculation: Starting from 0.25K, temperature resolution: 0.01 ° C; temperature range: 4 ° C~95 ° C, temperature difference range: 3 ° C75 ° C; protection level: Sensor IP68, Wang IP65.