Troubleshooting Magnetic Flow Meters: 5 Common Issues with Case Studies
As a cornerstone of process measurement, magnetic flow meters excel in conductive liquid measurement . However, operational challenges may arise. This article analyzes real-world failures with actionable solutions. Case 1: Empty Pipe Alarm Activation Symptom: Sudden zero readings at a wastewater plant. Diagnosis: Incomplete pipe filling triggered EPO alarm. Fix: Adjusted pipe slope to 5° upward, ensuring full submersion. Case 2: Electrode Coating Distortion Symptom: ±20% fluctuation in acid transfer lines. Diagnosis: 2mm calcium sulfate buildup on electrodes. Fix: Ultrasonic cleaning with 10% oxalic acid restored accuracy. Case 3: Bubble-Induced Spike Errors Symptom: Random 150% spikes in juice bottling. Diagnosis: Entrained air causing conductivity variations. Fix: Installed degassing vessel upstream, reducing spikes by 89%. Ca...