HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

Fault handling during the commissioning period of insert-type electromagnetic flowmeters

2019-06-06 View Original

Thread Content

Troubleshooting during the commissioning period of insert-type electromagnetic flowmeters, as well as faults related to the initial commissioning of such flowmeters. However, once these faults are resolved, they generally do not reoccur under the same conditions. Common faults are mainly due to three reasons: the installation and commissioning period, environmental interference, and the influence of fluid properties. In fluids and liquids, tiny bubbles are usually distributed evenly and do not affect normal measurements; this is only the case for volumetric flow rates when liquids and gases are combined ; Bubbles increase the fluctuations in the output signal. If large bubbles cover the entire electrode surface through which the current flows, causing the electrode’s signal to momentarily break the circuit, the output signal will experience significant fluctuations. Rectangular-wave excitation split-type electromagnetic flowmeters operating at low frequencies (50/16 Hz to 50/6 Hz) generate noise when measuring slurries containing a certain amount or more of solids in the liquid, and the output signal also experiences some degree of fluctuation. For tasks such as pipeline system installation, common faults related to incorrect installation locations of plug-in electromagnetic flowmeter sensors include situations where the flow sensors are installed in natural gas pipeline networks where it is easy for high levels of accumulation to occur ; The flow sensor is not under any pressure; the liquid is discharged directly into the atmosphere, thus forming a complete measurement tube ; Installing a flow meter in the space that may arise due to dirt on the vertical lines is special, as it is located underwater, to ensure there is no floating. Factors such as the environment, stray current interference from main pipelines, spatial electromagnetic wave interference, and magnetic field interference from large motors – for stray current interference from pipelines, good grounding practices usually yield satisfactory results in terms of individual measurements; however, this approach does not work when there is a high level of stray current in the pipeline (such as in electrolysis plant production lines). In such cases, it is necessary to use insert-type electromagnetic flowmeter sensors along with special measures tailored to the characteristics of the pipeline. Introduction to electromagnetic wave-space signal cables: they usually have one or multiple shielding layers for protection, but there are cases where such shielding cannot overcome certain issues. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content!

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.

Quick Links