CALDON LEFM 589Ci Ultrasonic Flow Meter

Overview

Quantitative and continuous self-verification

Over time, ultrasonic meters have continued to evolve with significant improvements in both accuracy and repeatability, as well as the ability to monitor their long-term performance through the use of diagnostic information and condition-based monitoring (CBM) software. As users move away from traditional verification methods due to the CAPEX and OPEX considerations, the ability to monitor the performance of the ultrasonic meter has become more important than ever before. Caldon believe that is has become more important in CO2 applications where users desire to avoid complex installations or meter removal for reverification purposes.

CALDON SVM technology employs our proven 8-path configuration for its primary measurements. The 8-path configuration uses crossed paths in each of four chordal planes to effectively cancel the effect of non-axial velocities and accurately integrate the axial velocity profile. This technology is the foundation of our SVM 589Ci which is a 16-path meter incorporating three significant features to produce an ultrasonic meter with unique and unrivalled self-verification ability:

1. Axial velocity measurement verification per chord.
2. Fifth chordal measurement plane to facilitate 4-chord (8-path) versus 5-chord (10-paths) evaluation of flow profile uncertainty.
3. Vertical reflective path for detection of entrained liquid or contamination.

SVM technology enables the simultaneous calculation of measurement uncertainty alongside each flow measurement calculation – updated once per second. In addition to the continuous and instantaneous output of uncertainty in terms of volumetric flowrate or a relative percentage value, SVM totalises uncertainty values internally.

CALDON SVM 589Ci Ultrasonic Flow Meters can be used on systems where there are challenges in verification methods, a desire to gain further confidence in measurement performance, reduction in infrastructure and/ or an improvement in CapEx and OpEx.

Features

Quantitative evaluation of meter performance along with a continuous and instantaneous output of uncertainty in velocity, flowrate and % units.

Avoid depressurising CO2 pipelines for meter removal and calibration

Significant complexity reduction by reducing unnecessary infrastructure such as “Z” Configuration

Internal uncertainty totalisers that report uncertainty as a volumetric total.

Insensitivity to swirl

Sizes from 8” to 48” (Larger sizes available on request)