VFT Enhanced Vortex Flowmeter
The VFT Enhanced Vortex Flowmeter employs advanced signal processing technology based on FFT spectrum analysis to reliably detect vortex signals in the low-flow, small-signal range, achieving a turndown ratio of up to 1:40. It features a shielded signal chain design, built-in surge protection, and an optimized anti-vibration algorithm. The non-wetted probe design allows for online replacement.
Technical data
| Accuracy: | Liquid: Class 1; Gas: Class 1 | Turndown Ratio: | Up to 1:40 |
| Process Temperature: | -40°C to +400°C | Interference Immunity: | Shielded signal chain + surge protection + optimized anti-vibration algorithm |
| Probe Design: | Non-wetted probe, supports online replacement | Low Power Consumption: | Loop current <4 mA, total power consumption <100 mW |
| Ingress Protection: | IP65 / IP67 | Communication Protocol: | HART / Modbus（RS485） |
Features & Benefits
Wetted-Parts-Free Probe, On-Line Replacement Without Shutdown
The probe is completely isolated from the process media, transmitting signals through air and mechanical components. When a probe needs replacement, there is no need to shut down, depressurize, or disassemble piping—on-line replacement reduces maintenance downtime to zero. The best choice for continuous-process plants.
Industry-Leading 1:40 Turndown
An optimized lift-force cantilever tail fin design, combined with advanced FFT spectrum analysis, achieves a turndown ratio up to 1:40—over 30% wider than conventional vortex meters. A single meter covers the full flow range from low load to full load.
High SNR, Strong Interference Immunity
The entire signal chain is shielded, with built-in surge protection and continuously optimized anti-vibration algorithms. In plant environments dense with VFDs and motor drives, the meter still outputs a clean, stable signal, eliminating measurement drift caused by on-site electromagnetic interference.
Thermally Isolated Probe for Longer Life in High-Temperature Service
The probe is isolated from the process media, so its body temperature drops significantly when measuring high-temperature fluids. This fundamentally solves the problems of rapid aging and zero drift that plague conventional vortex probes at elevated temperatures—delivering better long-term stability.
HART Smart Communication and Self-Diagnostics
Supports HART, Modbus (RS485), and 4–20 mA / pulse output for seamless DCS/PLC integration. Built-in empty-pipe, overrange, and sensor-fault diagnostics; damping time adjustable from 0.5 to 200 seconds; 5-segment linearization—commissioning and inspection can be completed remotely.
Certifications
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KC Radio Certification (South Korea)
Registered with the National Radio Research Agency (RRA) of South Korea under equipment ID CQCY-VFT for VFT series vortex flowmeters. Grants market access in Korea for industrial radio and EMC-compliant devices.
Applications
Steam Metering
Saturated steam and superheated steam (petroleum, chemical, and heating networks)
Compressed Air
Air compressor stations and plant piping networks
Chemical Process Gases
Nitrogen, air, oxygen, etc.
Heating Networks
Steam heat metering
LNG / BOG Reliquefaction
BOG, nitrogen and fuel-gas flow measurement for LNG reliquefaction systems
Case Studies
Luzhou Laojiao Brewing Co., Ltd.
Project with an annual capacity of 100,000 t/a solid-state baijiu and 100,000 t/a Qu starter
Shandong Tai’an LNG Plant
BOG reliquefaction project
Shaanxi Hongma Technology Co., Ltd.
10,000 t/a multi-element cathode material project for lithium-ion power batteries
