Environmental equipment suppliers often claim that: Wet FGD systems can achieve more than 95% SO₂ removal efficiency SCR DeNOx systems can reach 80% NOₓ reduction or even higher But once the project is actually commissioned, the biggest challenge is often not whether the technology works in theory — it is whether the entire system can […]
Why FGD and SCR Systems Become Unstable in Real Operation Read More »
A pressure transmitter may leave the factory fully calibrated, thoroughly tested, and perfectly within specification. Yet once installed on site, it suddenly starts giving unstable readings, drifting values, or inaccurate measurements. Why? In many cases, the problem is not the instrument itself — it’s how the transmitter is selected, installed, and applied in real operating
Why Pressure Transmitters Fail in the Field: Common Mistakes You Should Avoid Read More »
In chemical production, alarm and interlock settings for reactors are never just simple numbers. If the setpoint is too low, the system alarms frequently, disrupting production and eventually causing operators to ignore warnings — the classic “alarm fatigue” problem. If the setpoint is too high, by the time the alarm is triggered, the incident may
How to Set Alarm and Interlock Limits for Chemical Reactors Read More »
Selecting a reliable flow meter for large diameter circulating water pipelines (starting from DN400 and extending to DN2000 or even larger) has never been an easy task. For small and medium pipe sizes (generally below DN400), electromagnetic flow meters are usually the preferred choice because they offer a good balance between accuracy and reliability. If
How to Select a Large Diameter Circulating Water Flow Meter? Read More »
Introduction In industrial automation, instrument air quality is critical. Compressed air is not just “pressurized air”; it may carry moisture, oil mist, particles, and condensate. While these impurities may be acceptable for cleaning or pneumatic tools, they can cause malfunctions in instruments and control systems. 1. Factory Air vs. Instrument Air Factory air, also known
Common Instrument Air Drying Systems: Types, Working Principles, and Applications Read More »
1. How Radar Level Meters Measure Liquid Level Radar level meters use the Time-of-Flight (TOF) principle: the transmitter emits a microwave pulse, which reflects off the liquid surface and returns to the sensor. The instrument calculates the distance based on the round-trip travel time. Formula: D=c×t2D = frac{c times t}{2} where: DD= distance to
Radar Level Meters: High Frequency vs Low Frequency – Which Has Better Penetration? Read More »
1. Outdoor Instruments Protection Local Pressure/Temperature/Level Instruments Install rain/solar shields, with instrument heads facing downward to prevent direct water ingress. Seal all cable entries and wiring holes with waterproof sealant or plugs. Inspect and tighten rusty or loose brackets; apply anti-corrosion paint to prevent windstorm damage. Transmitters (Rosemount, Endress+Hauser, etc.) Install with the display facing
Introduction “When I first started, my mentor told me: ‘Changing parameters isn’t just typing numbers—it’s thinking three steps ahead. One number affects valve movement, process response, and compliance.’”It took time to understand, but now I realize: every parameter modification is a decision. Done skillfully, it’s technical expertise; done steadily, it’s experience; done correctly, it’s responsibility.
Instrument Technicians: Be Aware—Modifying These Parameters Can Be a Crime! Read More »
Many beginners in industrial automation tend to focus immediately on PLCs, robots, servos, motors, and vision systems—things that seem “high-tech.”These are, of course, important. However, in real industrial environments, most problems involve devices not moving, signals fluctuating, motors malfunctioning, modules burning out, or sensors behaving unpredictably. In the end, troubleshooting often comes back to the
Common Electronic Components in Industrial Automation Read More »
Differential pressure (DP) flow measurement devices are widely used in process industries and, in many cases, cannot be completely replaced by other flow measurement methods. However, one of the main challenges of DP flow measurement is the inaccuracy at low flow rates. Small Signal Cut-Off The small signal cut-off is a feature primarily used in
Differential Pressure Flow Measurement Instruments: Common Issues and Considerations Read More »
