As shown in Figure 1, the upstream pressure tapping point is located 25.4 mm from the upstream face of the orifice plate, and the downstream pressure tapping point is also located 25.4 mm from the downstream face of the orifice plate. When using flange pressure tapping, the pressure tapping flange is included as part of […]
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Instrumentation and electrical systems can be differentiated from the following aspects: 1. Definitions and Functions Instrumentation: Definition: Refers to devices or systems used to measure, display, control, and record physical quantities such as temperature, pressure, flow, and liquid levels. Function: Primarily focused on the precise detection and monitoring of various physical quantities to provide accurate
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Introduction Process detection and control instruments play a crucial role in ensuring production safety and smooth operation. Whether an instrument is functioning properly is directly related to the continuity and safety of chemical production. Therefore, maintaining and servicing instruments is essential. Instrument Maintenance Daily maintenance of instruments reflects the preventive ideology of Total Quality Management
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1. Basic knowledge of instruments Instruments are key components in industrial automation systems, and are mainly used to measure, record, control and adjust various physical quantities, such as temperature, pressure, flow, liquid level, etc. The basic function of instruments is to achieve signal conversion, that is, to convert the measured physical quantity into a standard
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After being in use for a period of time, electromagnetic flowmeters may suddenly become inaccurate, which undoubtedly causes significant inconvenience to industrial production. This article will explore the reasons why electromagnetic flowmeters become inaccurate after some time and offer solutions to these problems. First, let’s analyze the possible causes: Sensor Contamination: During operation, the sensor
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Flammable gases can be classified as either single flammable gases or mixed flammable gases, both of which have flammable and explosive properties. The explosion limit refers to the concentration range within which a flammable gas, when mixed with an oxidizing gas, will explode under standard testing conditions. Oxidizing gases can include air, oxygen, or other
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Automation instruments can be categorized into six major types: field measurement instruments, field control instruments, field instrument actuators, display and recording instruments, regulation control instruments, and special measurement instruments. Each major type can be further subdivided into several categories. This article provides a detailed discussion of these types. Definition of Automation Instruments Automation instruments are
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Volumetric flow meters play a vital role in the chemical industry, where accurate measurement and control of fluid flow are essential for maintaining product quality, optimizing production processes, managing energy consumption, and ensuring safety and environmental compliance. The primary applications include: 1. Accurate Measurement of Fluid Flow 1.1 Measurement of Raw Materials: In chemical production,
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High temperature conditions are a common and challenging environment in industrial production. Under such conditions, the accuracy of liquid level monitoring is directly related to production safety and efficiency. Radar level meters have shown their irreplaceable importance in high temperature application environments due to their unique advantages. This article aims to explore the impact of
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Measuring liquid flow in large-diameter pipelines is critical for applications such as municipal water supply, industrial cooling water systems, and wastewater treatment plants. The challenge in these systems is ensuring accurate, stable, and reliable measurement while also maintaining ease of installation and maintenance. Several flow measurement techniques are commonly employed for large-diameter pipelines, each with
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