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『Yokogawa Vortex Flow Meter Manual』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. What are the precautions for setting high-speed pulse parameters for vortex flowmeters?
When setting high-speed pulse parameters for vortex flowmeters, attention should be paid to signal stability, range matching, and anti-interference ability, which are directly related to measurement accuracy and equipment safety Pulse signal parameter setting • Pulse frequency upper limit: The highest frequency (usually 10kHz-100kHz) needs to be confirmed according to the sensor model, and the set value should not exceed 80% of the calibration upper limit • Pulse width adjustment: The minimum pulse width should be greater than the minimum recognition time of the receiving device (usually ≥ 0.1ms), as being too narrow can cause signal loss • Duty cycle control: It is recommended to maintain a symmetrical waveform of 40% -60% to avoid signal distortion caused by extreme duty cycles. 2 Range matching setting • Instrument coefficient (K coefficient): Strictly follow the coefficient settings indicated on the verification certificate, with a typical value range of 0.1-100 pulses/liter • Range ratio setting: Keep the actual flow rate within the range of 20% -80% to avoid measurement blind spots caused by the lower cutoff frequency • Small signal cutoff point: usually set to 1% -2% of the full range to prevent false pulses caused by unstable vortex shedding at low flow rates Anti interference protection settings • Filtering time constant: Set according to the fluid pulsation situation (usually 1-30 seconds), and increase the filtering time appropriately when the medium fluctuates greatly • Signal shielding requirements: The pulse signal line must use twisted pair shielded cables, with the shielding layer grounded at one end • Po
2. What is the software set for Yokogawa flowmeter
The software set for Yokogawa flowmeter is FlowNavigator (FSA120).
. The following is a detailed introduction to the software: FlowNavigator (FSA120) software is not a single program, but integrates two important subroutines, EJXMVTool and DYFMVTool. EJXMVTool is a program specifically designed for EJX multivariable transmitters, which can simultaneously measure multiple parameters such as pressure response, temperature, etc. EJXMVTool can accurately configure and debug the transmitter to ensure that it can accurately convert the measured physical quantities into electrical signal outputs. DYFMVTool is a program designed for the digital YEWFLO vortex flowmeter. The vortex flowmeter is an instrument based on the Karman vortex principle for flow measurement. DYFMVTool can set various parameters of the vortex flowmeter to adapt to different measurement environments and working conditions. Function feature parameter configuration function: This software supports configuring various key parameters, such as flow co