Engineered for Variable Flow + Vibration

Wide-Turndown Anti-Vibration Vortex Flowmeter

Industrial flow rarely stays at one operating point.

Designed for substantial flow variation where mechanical vibration can interfere with vortex detection.

Velomac wide-turndown anti-vibration vortex flowmeter with complete transmitter, sensor neck, meter body and flanges

1:70

Turndown Ratio

±0.5%

Accuracy

4-Level

Anti-Vibration Mode

Check Your Flow Range View Technical Range

The Site Condition

One Pipeline. Several Operating Conditions.

Startup, reduced load and peak demand can place the same measurement point across a much wider flow range than its normal operating condition.

Startup

Low Load

Normal Operation

Peak Demand

The meter has to stay usable across the actual operating envelope.

Wide Turndown

1:70

Up to 1:70 turndown ratio

A Wider Usable Flow Envelope

The wider turndown extends the usable range between minimum and maximum operating flow, allowing the same measurement point to cover more of the actual process cycle.

Steam Distribution

Energy Metering

Variable Process Loads

Flow Physics + Signal Detection

The Engineering Behind the Wider Range

Optimized bluff body

Detectable vortex behavior

Optimized Bluff Body

Vortex-generator geometry maintains detectable vortex behavior across a broader flow range.

Adaptive Signal Filtering

Adaptive filtering and digital noise processing extract smaller signals as flow velocity decreases.

High-Sensitivity Sensing

High-sensitivity sensing improves response under low-flow operating conditions.

Mechanical Disturbance

When Pipe Vibration Looks Like Flow

Mechanical vibration from pumps, compressors and piping can enter the vortex signal environment. Digital signal analysis is used to separate vortex behavior from mechanical disturbance.

4-Level

Anti-Vibration Mode

Measured Signal

Digital Signal Analysis

Vortex Signal

Adaptive Filter Mode

For normal and relatively stable operating environments.

Anti-Vibration Analysis Mode

For installations affected by stronger mechanical vibration.

Technical Summary

Key Engineering Data

1:70

Turndown

±0.5%

Accuracy

≤0.2%

Repeatability

DN15–DN300

Size Range

Media: Liquid · Gas · Saturated Steam · Superheated Steam

Technical Range

Measurement Range by Size

Check the available flow and velocity range by nominal size and medium.

DN15–DN300

14 nominal sizes

SizeNominal Size	Flow Range (m³/h)	Velocity (m/s)
DN15	0.15–5.0	0.2–8.0
DN20	0.2–9.0	0.2–8.0
DN25	0.4–15	0.2–8.0
DN32	0.6–23	0.2–8.0
DN40	0.9–36	0.19–8
DN50	1.4–56	0.19–8
DN65	2.2–85	0.19–8
DN80	3.4–145	0.19–8
DN100	5.4–220	0.19–8
DN125	8.4–350	0.19–8
DN150	12–500	0.19–8
DN200	22–900	0.19–8
DN250	34–1400	0.19–8
DN300	48–2000	0.19–8

Application Review

Can One Meter Cover Your Full Flow Range?

Send us your actual operating conditions and we can evaluate the usable measurement range for the application.

Check My Application

Pipe size

Medium

Minimum flow

Normal flow

Maximum flow

Operating pressure

Operating temperature

Vibration source, if applicable