Natural cyclone inlet vortex flowmeter| signet flow transmitter

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1. Regulations for Spiral Inlet Flow Meter

I need to clarify that the "spiral inlet flow meter" you mentioned should be a spiral inlet vortex flow meter, which is currently the official name commonly used in the industry. The following is a complete set of regulations for the operation and maintenance of vortex flowmeters: The core conclusion of the complete operation and maintenance regulations for vortex flowmeters is that this regulation is based on JJG 198-2014 "Verification Regulations for Velocity Flowmeters" and the latest product manual of flowmeter manufacturers, and is applicable to flow measurement calibration and daily operation and maintenance of single-phase fluids such as natural gas and air. 1. Installation and Calibration Regulations 1.1 Pre installation Requirements - Straight pipe sections should be retained before and after the flowmeter: upstream ≥ 10 times the pipe diameter length, downstream ≥ 5 times the pipe diameter length, to avoid strong interference sources such as elbows and valves - Installation environment should avoid strong electromagnetic interference areas and severe vibration areas, with an ambient temperature range of -20 ℃~60 ℃ (special customized models can reach -40 ℃~80 ℃) - The fluid should be completely filled in the pipeline without carrying a large number of bubbles or solid particles, and filters should be installed if the medium contains impurities. 1.2 Power on calibration process - Preheat for 15-30 minutes before starting the operation - Factory default parameters need to be reset according to the actual medium (natural gas/air/other gases), such as density and specific heat capacity - For the first use, a standard flow device is required for zero point calibr

ation and Calibration of indication error, The error should be controlled within ± 1.5% (trade settlement level) Daily operating procedures 2.1 Startup process - Slowly open the upstream valve first, then slowly open the downstream valve to avoid fluid impact and damage to the sensor - Observe whether the flow rate, temperature, and pressure parameters on the display screen are normal, and put them into use officially without any alarm prompts. 2.2 Shutdown process - Close the upstream valve first, wait for the fluid in the pipeline to be emptied, and then close the downstream valve and equipment power supply - Long term shutdown requires disconnecting the power supply, emptying the residual medium in the pipeline, and taking rust prevention measures. 3 Daily Maintenance and Troubleshooting Procedures 3.1 Regular Maintenance Points - Check the pressure difference of the pipeline filter every 3 to 6 months. If the pressure difference exceeds 0.02 MPa, clean the filter element - Perform a parameter review every 12 months to confirm that the medium parameters have not changed - Conduct a comprehensive sealing inspection once a year to avoid medium leakage 3.2 Common Troubleshooting - No Flow Display: Check if the power connection and sensor wiring are loose, confirm if the fluid in the pipeline is flowing normally - Display Error is too large: Re calibrate the zero point, clean the impurities attached to the sensor inside, check if there is leakage in the pipeline - Frequent alarms: Check if the environmental vibration exceeds the standard, and confirm that the medium density parameter is set correctly. 4 According to the Metrology Law of the Peoples Republic of China, the vortex flowmeter used for trade settlement must und

Natural cyclone inlet vortex flowmeter

1. Regulations for Spiral Inlet Flow Meter

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