Flow meter remote transmission | Wireless remote transmission flow meter usage method

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1. Reasons for inconsistency between on-site and remote transmission of flow meters

Flow meters display instantaneous and cumulative flow rates. If remote transmission signals use 4-20mA or pulse signals, there will be certain errors in the conversion of remote instruments, resulting in inconsistent instantaneous flow rates (generally not much difference). However, using 4-20mA signals for cumulative quantity calculation will be completely different from the on-site cumulative quantity, not only caused by errors, but also by different starting points for accumulation. If you want the remote instrument display to be completely consistent with the on-site instrument, the training personnel need to transmit it remotely through the same communication method.

2. Instructions for using wireless remote flowmeter

The core of using wireless remote flowmeter lies in four steps: correct installation, parameter setting, data acquisition, and system maintenance.

1 Equipment installation and wiring - Sensor installation: Select the appropriate installation position according to the pipeline medium (liquid/gas/steam) to ensure a full pipeline state. For liquid media, it is recommended to install horizontally or obliquely, and for gas media, vertical installation is recommended. - Electrical connection: Strictly follow the nameplate markings for power input wiring (usually 24VDC or 220VAC), pay attention to polarity to prevent module burnout. - Antenna installation: External antennas should be kept at least 1 meter away from metal pipelines and maintain a vertical orientation; Built in antenna device avoids rough land excavation and metal enclosed environment 2 Communication parameter configuration can be se Flow meter remote transmission

t through local buttons or infrared debugger: - Operator selection: Mobile/Unicom/Telecom SIM card (requires IoT service) - APN settings: Mobile card set to CMIOT, Unicom card set to UNIM2M.NJM2MAPN - Communication protocol: standard support MODBUS RTU/TCP, HTTP/MQTT protocol - Reporting interval: set different frequencies from 1 minute to 24 hours according to requirements (affecting battery life) 3 Flow parameter calibration - Instrument coefficient input: Enter K coefficient (pulse type) or correction coefficient (analog type) according to the verification certificate - Range setting: Set 4-20mA corresponding flow range through HART protocol or manual controller - Temperature and pressure compensation: Steam/gas flow needs to be connected to PT100 temperature sensor and pressure variable rock core transmitter signal 4 Data platform docking - Cloud platform registration: Create a device on the operators cloud platform (such as China Mobile OneNET, Telecom IoT platform) - ID binding: Enter the device IMEI number (body barcode) and SIM card number to complete the binding - Data mapping: Configure register address correspondence (such as 0000H register often stores instantaneous traffic value) 5 Daily maintenance points - Battery life: The lithium battery powered model can last for about 3 years at a reporting frequency of 1 minute - Signal inspection: The signal strength is judged by the LED indicator light (the green light is always on, indicating normal communication) - Regular verification: Online comparison is carried out every 12 months, and actual current calibration is implemented 24 months. Note: Please refer to the equipment manual for specific operations. There is a risk of electric shock when opening the cover

Flow meter remote transmission | Wireless remote transmission flow meter usage method

1. Reasons for inconsistency between on-site and remote transmission of flow meters

2. Instructions for using wireless remote flowmeter

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