Technical Articles &
Engineering Guides

In-depth technical articles written by NCI's applications engineers. Covering flow measurement, mixing, steam systems, level instrumentation, and noise control — with practical guidance you can apply immediately.

AllMixingSteam SystemsFlow MeasurementLevel & Sight

Mixing6 min read

Eductors vs. Mechanical Mixers: Which Is Right for Your Application?

A side-by-side comparison of jet mixing and mechanical agitation — covering viscosity limits, maintenance, CIP compatibility, and total cost of ownership.

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Steam Systems7 min read

Steam Eductor Design Basics

How steam eductors work, how to size them, and the key parameters that determine performance — motive pressure, suction pressure, and compression ratio.

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Mixing8 min read

Tank Mixing Best Practices

Eductor placement, nozzle count, turnover rate, and motive pressure guidelines for effective full-tank mixing — with worked examples.

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Level & Sight5 min read

Sight Glass Shielding Options

When shields are required, what materials to specify, and how to choose between transparent gages, reflex gages, and magnetic level indicators.

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Flow Measurement6 min read

Flow Switch Troubleshooting Guide

Diagnosing the five most common flow switch problems — false trips, no-trip failures, setpoint drift, corrosion, and wiring issues.

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Steam Systems7 min read

Boiler Level Instrumentation Basics

Why boiler drum level is critical, how level gages and controls work together, and the redundancy requirements for safe boiler operation.

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Flow Measurement5 min read

Variable Area Meter Accuracy Explained

Understanding rotameter accuracy specs — full-scale vs. reading accuracy, the effect of fluid properties, and how to correct for non-water fluids.

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Also See

Problem / Solution Guides

Step-by-step guides for specific process problems — with equipment recommendations.

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Quick Reference

Material Compatibility Table

Filterable elastomer and seal compatibility ratings for Buna-N, EPDM, Viton, PTFE, Silicone, PEEK, Kalrez, and more — across 10 fluid categories.

View Compatibility Table

Interactive Tools

Need to run the numbers?

Our Engineering Tools section has 14 interactive calculators — flow correction, eductor sizing, noise level addition, Reynolds number, and more.

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Technical Articles &Engineering Guides

Eductors vs. Mechanical Mixers: Which Is Right for Your Application?

Steam Eductor Design Basics

Tank Mixing Best Practices

Sight Glass Shielding Options

Flow Switch Troubleshooting Guide

Boiler Level Instrumentation Basics

Variable Area Meter Accuracy Explained

Problem / Solution Guides

Material Compatibility Table

Need to run the numbers?

Technical Articles &
Engineering Guides