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Intelligent Integrated Vortex Flow Meter Technical Parameters and System Integration Guide
Intelligent Integrated Vortex Flow Meter: A Reliable Hardware Platform for Industrial Medium Flow Measurement
In process industrial automation and energy management systems, flow measurement is a core link in process control, metering settlement, and equipment protection. The Nexisense intelligent integrated vortex flow meter is based on the Karman vortex principle and adopts a design without moving parts, providing system integrators, engineering companies, project contractors, and technical procurement personnel with a simple structure and convenient installation and maintenance volume flow measurement solution. This product can measure the volume flow, standard volume flow, or mass flow of gas, steam, or liquid, and is used as a flow transmitter in automation control systems. It is widely suitable for pipeline flow monitoring in petrochemical, power, metallurgical and other industries.
Product Overview
The Nexisense intelligent integrated vortex flow meter generates alternately arranged vortex streets through a triangular prism-shaped vortex shedding body in the pipeline, and realizes flow measurement by using the linear relationship between vortex street frequency and fluid flow velocity. The product integrates intelligent digital processing circuits and adopts ultra-low power single-chip microcomputer technology. It supports on-site power supply with a 3.2V 10AH lithium battery, with a battery life of up to more than 5 years. It is also equipped with EEPROM for power-down protection of accumulated flow, with protection time greater than 10 years.
The instrument adopts advanced differential technology, combined with isolation, shielding, filtering and other measures, effectively overcoming problems such as poor anti-vibration performance and small signal data disorder, and uses unique sensor packaging technology and protection measures to improve product reliability. As a manufacturer of industrial sensors and IoT edge modules, Nexisense designs this intelligent integrated vortex flow meter as a standardized hardware platform, supporting multiple output signals and installation methods, making it convenient for system integrators to quickly access DCS, PLC, or edge data acquisition systems.
Core Technical Parameters
| Parameter Name | Technical Index | Remarks |
|---|---|---|
| Nominal Diameter | DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 mm | Supports flange clamped or integrated flange connection |
| Meter Material | 1Cr18Ni9Ti | Other materials supplied by agreement |
| Nominal Pressure | PN1.6MPa, PN2.5MPa, PN4.0MPa | Select according to working conditions |
| Medium Temperature | -40～+250℃ (conventional), -40～+350℃ (high temperature) | Supports saturated steam and superheated steam |
| Environmental Conditions | Temperature -10～+55℃, relative humidity 5%～90%, atmospheric pressure 86～106kPa | Conventional industrial site environment |
| Accuracy Grade | Liquid: ±0.5% of reading Gas or steam: ±1.0%, ±1.5% of reading | Measurement accuracy after compensation |
| Turndown Ratio | 1:10, 1:15 | Adapt to flow variation range |
| Output Signal | 4-20mA current, optional pulse output | Supports on-site display and remote transmission |
| Power Supply | Sensor: +12VDC, +24VDC Transmitter: +24VDC On-site display type: with 3.2V lithium battery | Battery type ultra-low power consumption |
| Protection Grade | IP65 | Explosion-proof grade ExdIIBT6 optional |
| Allowable Vibration Acceleration | 1.0g | Has certain anti-environmental vibration performance |
| Signal Transmission Line | STVPV3×0.3 (three-wire system), 2×0.3 (two-wire system) | Transmission distance ≤500m |
| Electrical Interface | Internal thread M20×1.5 | Adapt to on-site wiring requirements |
The product supports software correction of instrument coefficient nonlinearity to improve measurement accuracy. Nexisense can provide customized services according to project requirements, including special materials, higher pressure ratings, or extended communication interfaces.
Working Principle
The working principle of the intelligent integrated vortex flow meter is based on the Karman vortex effect. When fluid flows through the non-streamlined vortex shedding body in the pipeline, alternately arranged regular vortex streets are generated on both sides downstream. The shedding frequency of the vortex street is proportional to the fluid flow velocity. The piezoelectric sensor detects the vortex street signal, which is converted by the intelligent digital processor into pulse frequency or standard current signal, and then the instantaneous flow and accumulated flow are calculated.
The product adopts disturbance elimination circuits and anti-vibration sensor heads to improve signal stability and resistance to environmental vibration. The software correction function can optimize the nonlinearity of the instrument coefficient to ensure high accuracy is maintained within a wide range. It has small pressure loss and a wide range, suitable for metering of various industrial media.
Product Performance and Features
The Nexisense intelligent integrated vortex flow meter has the following practical performance in engineering integration applications:
No moving parts, long-term stability, simple structure, easy to install and maintain;
Adopts disturbance elimination circuits and anti-vibration sensor heads, with certain anti-environmental vibration performance;
Ultra-low power single-chip microcomputer technology, one 3.2V 10AH lithium battery can be used for more than 5 years;
Software correction of instrument coefficient nonlinearity to improve measurement accuracy;
Small pressure loss, wide range, significant energy-saving effect;
EEPROM provides power-down protection for accumulated flow, with protection time greater than 10 years;
Adopts advanced differential technology, combined with isolation, shielding, filtering and other measures to overcome problems such as poor anti-vibration performance and small signal data disorder;
Unique sensor packaging technology and protection measures to ensure product reliability;
Supports on-site LCD display, which can display instantaneous flow, accumulated flow and other parameters, convenient operation;
Flexible installation method, supports flange clamped or integrated flange connection, adapting to different process pipeline layouts.
These features make the product particularly suitable for continuous operation production processes and energy metering systems.
Application Fields
The Nexisense intelligent integrated vortex flow meter can be widely used in the following scenarios:
Water supply and drainage, industrial circulating water, and sewage treatment flow metering for various large, medium, and small pipelines;
Flow measurement of oils and chemical reagents;
Flow metering of compressed air, saturated steam, superheated steam, and natural gas;
Petrochemical process media, metallurgical industry gas pipelines, and power industry steam system monitoring.
For system integrators and project contractors, the standardized output and installation methods of this product help quickly complete pipeline integration, reduce on-site welding and calibration workload, and lower overall implementation costs.
Selection and Integration Suggestions
When selecting, engineers need to focus on the following factors:
Select the appropriate caliber according to the pipeline nominal diameter and medium type (liquid, gas or steam) to ensure the flow falls within the measurement range;
Confirm the medium temperature and pressure rating, and match the corresponding temperature and nominal pressure configuration;
Determine output signal requirements: 4-20mA for analog control, pulse output for counting or remote transmission;
On-site power supply and protection conditions: battery power is suitable for occasions without power supply, IP65 protection meets most industrial environments;
Installation form: flange clamped installation is simple, integrated flange connection is suitable for projects with higher pressure or strict sealing requirements.
The Nexisense technical team can provide flow range calculation, selection confirmation, and integration matching support with upper control systems.
Comparison with Other Flow Measurement Solutions
Compared with differential pressure orifice plate flow meters, the intelligent integrated vortex flow meter has smaller pressure loss, does not require long straight pipe sections, and has better adaptability to vibration environments. Compared with positive displacement flow meters, its structure is simpler, maintenance is lower, and it is suitable for a wider range of medium temperatures. In steam and gas metering, the product’s wide turndown ratio and low power consumption design have obvious engineering advantages. Nexisense provides a variety of flow meter series, making it convenient for engineering companies to optimize combinations according to specific working conditions.
Installation and Maintenance Points
During installation, it is recommended to meet the recommended front and rear straight pipe section length requirements to avoid upstream flow disturbing elements interfering with the vortex signal. The flow meter can be installed horizontally or vertically, but it is necessary to ensure that the medium fills the pipeline. The electrical interface adopts M20×1.5 specification to ensure reliable sealing.
In terms of maintenance, because there are no moving parts, routine work mainly focuses on battery status checking, signal output verification, and sensor surface cleaning. Digital filtering and anti-vibration design can effectively extend the service life of the instrument and reduce on-site maintenance frequency.
FAQ
Q1. How does the intelligent integrated vortex flow meter ensure measurement stability in steam measurement?
The product adopts disturbance elimination circuits, anti-vibration sensor heads and software nonlinear correction, combined with differential technology and shielding filtering measures, effectively suppressing environmental vibration and small signal interference. It is suitable for long-term metering applications of saturated steam and superheated steam.
Q2. How is the battery life performance of the battery-powered version in distributed steam or gas metering points?
It adopts ultra-low power consumption design. A single 3.2V 10AH lithium battery can be used continuously for more than 5 years. Combined with EEPROM power-down protection, the accumulated flow data storage time is greater than 10 years. It is suitable for power-inconvenient or remote pipe network scenarios.
Q3. What output signals does this flow meter support to facilitate system integrators' access to existing control platforms?
It supports 4-20mA current output and pulse output, with optional on-site display configuration. The signal transmission line adopts specifications such as STVPV3×0.3, with transmission distance ≤500m. It is convenient to directly connect to PLC, DCS or Nexisense IoT edge modules.
Q4. For DN300 large-diameter pipelines, what parameters should be focused on during selection?
It is necessary to confirm whether the liquid or gas measurement range covers the actual flow, match the nominal pressure and medium temperature grade, and evaluate the installation method (flange clamped or integrated). Nexisense can provide flow calculation support.
Q5. Compared with traditional split-type vortex flow meters, what advantages does the integrated design have in engineering integration?
The integrated structure reduces the number of on-site instruments and wiring points, lowers installation man-hours and potential leakage risks, and simplifies the debugging process. It is particularly suitable for space-constrained or renovation projects.
Q6. How is the instrument protection and reliability guaranteed under high-temperature medium working conditions?
It supports medium temperature up to +350℃ configuration. Unique sensor packaging technology and multiple protection measures ensure reliability. Environmental temperature -10～+55℃ and IP65 protection grade adapt to most industrial site conditions.
Summary
The Nexisense intelligent integrated vortex flow meter provides a stable and reliable hardware solution for industrial medium flow measurement with the Karman vortex principle, no moving parts design, and ultra-low power intelligent circuits. Its characteristics of small pressure loss, wide range, and convenient installation and maintenance help system integrators, engineering companies, and project teams reduce implementation difficulty and improve the overall performance and data accuracy of automation control systems.
If your project involves gas, steam, or liquid flow measurement requirements, please feel free to contact the Nexisense technical support team. We will provide detailed selection suggestions, engineering calculation support, and complete system integration solutions according to specific pipeline parameters, working conditions, and integration requirements, to help the project be implemented efficiently and run stably.
