ข่าวสาร

Speed hunting on a Woodward 505E digital governor causes compressor surge, excess fuel burn, and mechanical fatigue on GE Frame 5 gas turbines. This guide covers the five root causes of governor hunting, step-by-step PID tuning procedures, actuator output calibration, and emergency overspeed test protocols to restore stable ±5 RPM speed control.

Engineering a 1oo3 voting flow loop using ABB 266 series and Bently Nevada differential pressure transmitters — wiring, signal processing, failure detection, and maintenance steps.

Miscalibrated oxygen analyzers cause two real disasters in process plants: false low-O2 trips that shut down furnaces unnecessarily, and false high-O2 readings that allow dangerous fuel-air mixtures to build up undetected. This article walks through the exact field calibration procedure for electrochemical O2 sensors—from permit isolation to sensor replacement decision.

Five communication-layer faults that corrupt tag data between Yokogawa CENTUM VP and GE RX3i — with numbered diagnostic steps and corrective parameters.

Shift-change SCADA slowdowns in Honeywell Experion PKS are a load management problem, not hardware failure. Six operators logging in simultaneously spike server CPU to 85–95% for four minutes, dropping tag scan rates from 500 ms to 2,000 ms. This guide identifies the root causes and delivers specific configuration fixes — including staggered login scheduling, report task offloading, and alarm database tuning — to restore full performance during the critical handover window.

Understanding register addressing, byte order, and data mapping for industrial Modbus networks. Practical implementation guide for Schneider Modicon and Allen-Bradley MicroLogix systems covering the four data types, address offset correction, 32-bit byte order handling, and master-slave network design.