Instrumentation

In industrial automation and control systems, the quality of compressed air plays a crucial role in ensuring reliable operation. Among various types of compressed air, instrument air refers to the purified, dry air supplied specifically to pneumatic instruments and control systems. This article explains the differences between plant air and instrument air, and provides a […]

1. Structural Definitions Symmetrical Cable Structure A symmetrical cable is one in which all conductors (e.g., three-phase power lines) are arranged in a geometrically balanced pattern, typically with: Equal spacing between conductors Identical insulation, shielding, and sheathing across all cores Consistent physical and electrical characteristics Example: A 3-core cable with conductors arranged in an equilateral

1. Determination of Pump Selection Parameters 1.1 Physical and Chemical Properties of the Medium The medium’s properties directly affect the pump’s performance, material selection, and structural design. Key considerations include: Corrosiveness, toxicity Presence of solid particles (content and size) Viscosity Tendency to crystallize 1.2 Process Parameters Flow Rate (Q): Minimum, normal, and maximum operational flow

1. Purpose This procedure is established to ensure standardized, professional, and hierarchical management of alarms and interlocks within all departments of the company. It specifies the management content and methodologies applicable to alarms and interlocks associated with production units. 2. Scope This procedure applies to the management of alarms and interlocks across all production units

In industrial control systems, the terms “active signal,” “passive signal,” “dry contact,” and “wet contact” are frequently used. However, these concepts are often confused due to overlapping characteristics and similar application scenarios. This article aims to clarify these concepts, explain their differences, and provide examples to help engineers and technicians make more informed decisions during

1. Introduction In the field of industrial automation, ensuring equipment reliability and early fault detection is essential to maintaining system safety and minimizing downtime. To address this, the NAMUR organization (User Association of Automation Technology in Process Industries, Germany) published NE 43, a guideline that defines how process instruments should signal failure conditions using standardized

In industrial environments, the proper installation of cables—whether for power, control, instrumentation, or data—is vital for both short-term performance and long-term reliability. One of the most often overlooked yet critical aspects of cable installation is the minimum bend radius. Ignoring this factor can lead to cable damage, safety risks, and system malfunctions. This article explores

In petrochemical plants, instrumentation plays a critical role in ensuring process safety, control, and operational efficiency. However, the flammable and explosive nature of hydrocarbons poses significant fire hazards, especially to field-mounted sensors, transmitters, and junction boxes. Proper fire protection strategies for instrumentation are essential to prevent catastrophic failures and ensure personnel and environmental safety. 1.

Integrated temperature and pressure gauges—also known as dual-function indicators—are widely used in chemical, pharmaceutical, and energy sectors for real-time monitoring of both temperature and pressure in a single instrument. Prices vary significantly depending on specifications, structure, and application environments, ranging from budget-friendly mechanical models to high-end versions with electronic outputs and rugged construction. This article

In industrial automation and process control, the correct wiring and commissioning of instruments is essential to ensure reliable system performance and precise measurements. This guide focuses on best practices and key considerations for the installation, wiring, and debugging of commonly used instruments in chemical industries, including temperature sensors, pressure transmitters, flow meters, and level detectors.