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Should Combustible Gas Detectors Be Equipped with Rain Shields?

Instrumentation /

Combustible gas detectors are critical safety devices used to detect the presence of flammable gases and mitigate potential hazards. However, whether they need to be equipped with a rain shield depends on the installation environment, device specifications, and operational requirements. Below is a detailed exploration of the factors to consider. 1. Installation Environment Indoor Installations: […]

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Basic Knowledge of Instrumentation: Understanding Errors

Instrumentation /

Types of Errors Reference Error: Definition: Reference error is the ratio of absolute error to the measurement range, expressed as a percentage. Formula: Reference Error (%) = (Absolute Error / Measurement Range) × 100 Absolute Error: Definition: The difference between the measured result and the true value. Formula: Absolute Error = Measured Value – True

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Selection of Thermometer Sheath Materials

Temperature transmitter /

In chemical plants, the installation of temperature measuring instruments such as thermometers and temperature transmitters often requires careful consideration of the thermometer sheath (TW). Since the sheath comes into direct contact with the medium, the material selection must align with the characteristics of the medium—be it corrosive, flammable, or explosive—to ensure stable operation and meet

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Two, three, four-wire instrumentation

Flow meter /

Process instruments are devices used in the field of industrial automation to measure and control process variables (such as temperature, pressure, liquid level, flow, etc.). In process control systems, sensors or transmitters communicate with the control system through electrical signals, and this communication method is usually divided into two-wire, three-wire and four-wire systems. These three

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Standards for Exempting Instrumentation from Calibration

Instrumentation /

Introduction In the precise world of measurement, not every instrument requires a rigorous calibration process. Certain equipment can reliably operate without calibration under specific conditions. This article outlines the standards and criteria under which instruments, such as ultrasonic level meters, can forego calibration while maintaining reliable and accurate performance. 1. Purpose of Instrument Usage Calibration

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Understanding EtherCAT: A High-Performance Industrial Ethernet Protocol

PLC /

Introduction EtherCAT (Ethernet for Control Automation Technology) is a high-performance, real-time industrial Ethernet communication protocol specifically designed for data transmission in automation control systems. Introduced by Beckhoff Automation in Germany in 2003, EtherCAT has rapidly become one of the most widely adopted fieldbus technologies in industrial automation due to its exceptional performance and scalability. With

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Radar level meter measures the level of small storage silos

Level meter /

In modern industrial and agricultural production, small storage silos are often used to store powders, granules and small volumes of liquid materials. Measuring the material level of these small storage silos is a key factor in ensuring production efficiency and material management. With the development of technology, radar level meters have become a common and

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Understanding the Differences Between Communication Protocols and Communication Interfaces

PLC /

In the realm of communication systems, the terms communication protocol and communication interface are often used interchangeably, leading to confusion. However, these terms refer to two distinct yet interrelated concepts. Understanding their differences is crucial for designing and implementing effective communication systems. This article explores each term in detail and highlights their differences and relationships.

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Advanced Liquid Level Monitoring for Paraffin Oil Tanks: The Role of Radar Level Meters

Level meter /

The chemical industry often faces unique challenges in liquid level monitoring, especially in handling paraffin oil storage tanks. Due to the specific properties of paraffin oil and the high precision required in its measurement, selecting the right instrumentation is crucial. Among the available solutions, radar level meters stand out with their non-contact measurement, high precision,

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