admin_zero, Author at Just Measure it - Page 2 of 355

admin_zero

Laminar Flow, Turbulent Flow and Reynolds Number

Instrumentation /

A Practical Guide to Flow Measurement and Flowmeter Selection Introduction Why does an electromagnetic flowmeter become less accurate when measuring sludge-containing wastewater?Why does a steam flow measurement still fluctuate badly even when an imported differential pressure transmitter is installed?Why does an oval gear flowmeter measuring lubricating oil seize after only a few months of operation? […]

Laminar Flow, Turbulent Flow and Reynolds Number Read More »

Troubleshooting and Repair of Flowmeters: Case Studies of Common Issues

Flow meter /

1. Issue: Display of the 8800D Saturated Steam Flowmeter Shows Low Readings Fault Diagnosis: This was a newly installed meter. Upon rechecking the settings, it was found that the flow measurement unit was set incorrectly— the range upper limit of 16,000 kg/h was mistakenly set to 16,000 m³/h. Fault Resolution: After correcting the range upper

Troubleshooting and Repair of Flowmeters: Case Studies of Common Issues Read More »

What Is a Pipeline Strainer and How Should It Be Selected?

Pipeline /

Introduction In industrial piping systems, strainers are rarely the most expensive components, nor are they usually the focus during the design stage. However, in actual operation, many problems that appear to be incidental—such as abnormal pump wear, control valve sticking, or gradual deterioration of heat exchanger performance—can often be traced back to insufficient filtration or

What Is a Pipeline Strainer and How Should It Be Selected? Read More »

Instrumentation Inspection Checklist and Key Inspection Points

Instrumentation /

1. Instrument Body and Accessories Inspection 1.1 Pressure Gauges / Differential Pressure Gauges Inspection Points: Check whether there is condensation, water droplets, or moisture inside the gauge. Ensure the pointer is intact, without falling off, sticking, or abnormal movement. Confirm the dial scale is clear and legible. Inspect the gauge body for deformation, mechanical damage,

Instrumentation Inspection Checklist and Key Inspection Points Read More »

Why the Sub-Meter Shows Flow but the Main Steam Flow Meter Reads Zero

Flow meter /

A Practical Troubleshooting Case Study In industrial steam measurement systems, discrepancies between sub-meters and the main flow meter are not uncommon. One particularly confusing situation is when the branch flow meter shows a stable flow rate, while the main meter continuously indicates zero flow. Is this a sensor failure?A wiring problem?Or is the issue hidden

Why the Sub-Meter Shows Flow but the Main Steam Flow Meter Reads Zero Read More »

PROFIBUS vs. PROFINET: Key Differences in Industrial Communication Systems

Instrumentation /

In industrial automation, the comparison between PROFIBUS and PROFINET has been discussed for decades.Both communication technologies are defined and maintained by PI (PROFIBUS & PROFINET International) and belong to the same IEC standard family. While they share continuity in engineering philosophy and configuration concepts, their technical architectures represent two different generations of industrial communication systems.

PROFIBUS vs. PROFINET: Key Differences in Industrial Communication Systems Read More »

Understanding Analog and Digital Signals

Instrumentation /

In engineering and scientific fields, “signals” typically refer to a function that conveys information through variation with respect to some independent variable, most commonly time. The function’s values can represent physical quantities such as voltage, current, light intensity, sound pressure, or electromagnetic field strength. Analog Signals An analog signal is one that varies continuously in

Understanding Analog and Digital Signals Read More »

Common Corrosive Media and How to Select the Right Instruments

Instrumentation /

1. Overview In modern chemical and process industries, corrosion remains one of the most critical challenges affecting production stability, instrument reliability, and plant safety.Pipelines, flowmeters, level transmitters, and process sensors are exposed to a wide range of acids, alkalis, solvents, and gas–liquid mixtures, many of which may chemically attack wetted materials. Understanding the corrosive properties

Common Corrosive Media and How to Select the Right Instruments Read More »

Small-Signal Cutoff in Flowmeters: Principles, Implementation, and Optimization

Flow meter /

Abstract Small-signal cutoff is an essential technique in industrial flow measurement used to suppress erroneous readings caused by zero drift, noise, and non-ideal process conditions.Although the phenomenon is common across all flowmeter types, the mechanisms that generate small signals differ significantly depending on measurement principle, instrument quality, environmental factors, and installation conditions.Appropriate cutoff configuration therefore

Small-Signal Cutoff in Flowmeters: Principles, Implementation, and Optimization Read More »

Key Role of Dielectric Constant in Radar Level Measurement

Level meter /

Radar level transmitters are widely used across industrial applications to measure tank and vessel levels using microwave-based distance measurement.Among all selection parameters, the dielectric constant (εr) of the medium is one of the most critical factors affecting radar performance. 🔹 1. What Is Dielectric Constant and Why It Matters The dielectric constant, also called the

Key Role of Dielectric Constant in Radar Level Measurement Read More »

Translate »