flow meters

Electromagnetic flowmeters (magmeters) are the gold standard for volumetric flow measurement due to their obstructionless design, lack of moving parts, and low pressure drop. However, specifying a magmeter based solely on pipe size is a recipe for operational failure. To ensure long-term reliability and achieve up to 0.2%  accuracy, engineering teams must conduct a thorough multi-variable analysis. Here is the step-by-step selection framework recommended by RB Flowmeter . RB Flowmeter, Selection Guide, Sizing Checklist, Magmeter, RBEF, RBHEF, Instrumentation Design 1. The Conductivity Threshold First and foremost, Faraday’s Law of induction requires a conductive fluid. Standard magmeters like the RB Flowmeter RBEF Series require a minimum fluid conductivity of 5 μS/cm . While municipal wastewater, chemical acids, and slurries are excellent conductors, pure demineralized water, hydrocarbons, and gases cannot be measured using electromagnetic technology. 2. Matching Liners and Ele...

In the demanding environments of the oil & gas, chemical, and metallurgical industries, accurate flow measurement under high pressure is a critical challenge. High-pressure electromagnetic flowmeters ( magmeters ) are the preferred solution due to their lack of pressure drop, high accuracy, and corrosion resistance. However, field engineers often face issues like unstable readings, signal noise, and even premature instrument failure.   This guide delves into the most common problems associated with high-pressure magmeters and provides actionable solutions to ensure reliable, long-term operation.     1. Installation & Flow Condition Errors: The Root of Instability   Symptoms: Erratic flow readings, significant measurement errors, frequent empty pipe alarms.   Root Causes: - Improper Meter Location: Installing the meter at a high point in the pipeline allows gas to accumulate, forming bubbles. Installing it where the pipe can drain empty prevents the tube...