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Practical PI Tuning for Liquid Level Control: A New Approach Based on Filling Time

PLC /

1. Introduction In process industries, liquid level is a typical integrating process variable, representing the physical balance of inflows and outflows in a vessel. Due to its integrating nature, level control loops often exhibit a unique set of challenges when applying conventional PID tuning methods—especially regarding the integral time. One of the most common issues […]

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Comprehensive Analysis of Causes for Abnormal Readings in Float Level Indicators: Case Studies and Solutions

Level meter /

In industrial production processes, float level indicators are commonly used instruments for measuring liquid levels. Accurate readings are critical for stable operations, and any abnormalities in level indication can lead to production issues and quality control problems. This article explores the possible causes of abnormal float level indicator readings and provides practical case studies to

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Key Features of Flange-Type Level Transmitters

Pressure Transmitter /

1. OverviewFlange-type level transmitters are widely used in industrial processes for continuous level measurement in various storage tanks, vessels, and reaction containers. These instruments are commonly applied in sectors such as metallurgy, chemical processing, environmental protection, electric power, pulp and paper, pharmaceuticals, textiles, food and beverage, and municipal engineering. Their popularity is closely related to

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Key Considerations for Selecting a Magnetic Flip Plate Level Gauge

Level meter /

Magnetic flip plate level gauges, also known as magnetic level indicators, are widely used in industrial processes for monitoring and controlling liquid levels in tanks and vessels. These devices offer reliable, continuous level measurement, even in challenging environments. To ensure optimal performance, it’s important to carefully select a magnetic flip plate level gauge that suits

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Pressure Gauges in Cold Storage Environments: Challenges and Solutions

Pressure Transmitter /

In the specialized environment of cold storage, accurate pressure measurement is critical to the stable operation of refrigeration systems and the safe preservation of stored goods. However, the low temperature and high humidity conditions commonly found in cold storage facilities pose significant challenges to the performance and reliability of pressure gauges. Understanding how pressure gauges

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Vortex Flow Meters with Temperature Compensation: Why It Matters for Steam Measurement

Flow meter /

Accurate steam flow measurement isn’t just about velocity—it’s about mass flow, which depends on temperature and pressure. Traditional vortex flow meters measure volumetric flow, which is often insufficient for precise steam control. That’s where temperature-compensated vortex flow meters come in. In this article, we explore how integrated temperature compensation improves accuracy, what to look for

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Vortex Flow Meter vs Thermal Mass Flow Meter: Which Is Better for Gas Measurement?

Flow meter /

Measuring gas flow in industrial processes is crucial for safety, efficiency, and cost control. Two of the most common technologies are vortex flow meters and thermal mass flow meters. Both have unique strengths, but they operate on very different principles and are suitable for different conditions. This article compares these two technologies in terms of

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Comparative Properties of Common Stainless Steels and Their Application in Control Valve Material Selection

Valve /

1. Overview of Common Stainless Steels: 201, 202, 301, 304, 316 Common considerations for stainless steel selection include rust resistance, hardness, and processability. The corrosion and heat resistance, toughness, and durability typically increase in the order: 201 < 202 < 301 < 304 < 316. Typical Parameters Comparison: Grade Density (g/cm^3) Thermal Conductivity (W/m.K @100°C)

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Differences Between Thermocouples and RTDs

Temperature transmitter /

Thermocouples and Resistance Temperature Detectors (RTDs) are two of the most commonly used temperature sensors across various industries. Each of these devices has unique characteristics, which makes them suitable for different applications. Understanding the differences between thermocouples and RTDs in terms of working principles, accuracy, measurement range, response time, output signal, cost, and durability is

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Impact of Weather Conditions on Instrumentation Equipment and Corresponding Protection Measures

Instrumentation /

Natural weather phenomena such as wind, rain, lightning, and stray electricity can significantly impact field instrumentation. These effects span mechanical, electrical, and environmental domains, potentially resulting in measurement inaccuracy, device failure, or even catastrophic damage. This document outlines the risks and provides comprehensive protective strategies. 1. Impact of Wind 1.1 Mechanical Damage Strong winds may

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