Remote transmission flowmeter | Reasons for inconsistency between flowmeter on-site and remote transmission

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1. Usage of Wireless Remote Flow Meter

The core of the usage of wireless remote flow meter lies in four steps: correct installation, parameter setting, data acquisition, and system maintenance 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 set 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 pressur

e 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 with power on, and non professionals are prohibited from operating the electrical connection part.

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

The flow meter displays the instantaneous and cumulative flow rates. If the remote transmission signal uses a 4-20mA or pulse signal, there will be some error in the conversion of the remote instrument, resulting in inconsistent instantaneous flow rates (generally not significant difference). However, using a 4-20mA signal for cumulative quantity calculation will be completely different from the on-site cumulative quantity, not only due to errors, but also due to different starting points of accumulation.

. If you want the remote instrument display to be completely consistent with t

Remote transmission flowmeter | Reasons for inconsistency between flowmeter on-site and remote transmission

1. Usage of Wireless Remote Flow Meter

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

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