Instrumentation

The classification of metrology institutions refers to the hierarchical management of organizations engaged in measurement and calibration services. This system is designed to facilitate effective regulation, guidance, and assessment of these institutions. The classification standards involve a range of factors, including industry regulations, legal frameworks, administrative practices, and technical competency. Key Evaluation Factors for Classification […]

The refining sector forms the first and one of the most critical segments of the petrochemical processing chain. By the end of 2016, China had reached a refining capacity of 750 million tons per annum, accounting for 15% of global capacity and ranking second in the world. Instrumentation and automation systems in refineries are designed

1. Introduction In process industries such as chemical, pharmaceutical, petrochemical, and food processing, accurate documentation of system design is crucial. Among the most essential engineering drawings are the Process Flow Diagram (PFD) and the Piping and Instrumentation Diagram (P&ID). These diagrams help engineers and operators understand the process flow, equipment layout, and control logic of

1. Common Grounding Methods for Shield Layers In industrial applications, shielded cables are typically grounded in one of two ways: (1) Single-Point Grounding (Recommended for Control Systems) The metallic shield is grounded only at one end, while the other end is left unconnected or grounded via protective earth. ✅ Purpose: To eliminate electromagnetic interference (EMI)

1. What is a Fire Power Monitoring System? A fire power monitoring system is designed to perform real-time monitoring of the power supply status for firefighting equipment. By continuously tracking critical parameters such as voltage, current, and switch status, the system ensures that all fire protection devices are operating under normal conditions. Modern fire power

1. Importance of Density Meter Calibration Density meters are widely used in petroleum refining, chemical manufacturing, food and beverage production, and pharmaceutical industries for process control and quality assurance. The accuracy and reliability of these instruments directly impact product quality and operational stability. Thus, regular calibration and verification are critical to ensure dependable measurement results.

When installing industrial instruments in hazardous environments, ensuring explosion protection compliance is crucial. A common question arises: “If an industrial instrument’s enclosure has already obtained an explosion-proof certificate, is it still necessary to obtain certification again after installation?” Let’s explore this topic from a technical and regulatory perspective. ✅ 1. Does the Installation Alter the

1. Introduction Instrument calibration is a fundamental process to ensure the accuracy, traceability, and reliability of measurement data. It plays a critical role in quality control, process monitoring, compliance, and research. A scientific and robust calibration program enables measurement results to be legally traceable and technically comparable, aligning with international and industry-specific standards. 2. Four

1. Routine Inspection and Maintenance 1.1 Daily Instrument Patrol Instrument technicians should follow a pre-defined inspection route twice per shift, based on instrument layout. During inspection, they should communicate with operators to understand operational status and troubleshoot issues proactively. Checklist during patrol: ✅ Check whether local and control room readings are consistent ✅ Verify power

1. Why Instrument Grounding Matters In chemical production environments, instrumentation systems serve as the “eyes and brain” for monitoring and controlling processes, while grounding systems act as the “lifeline” for operational safety and stability. Improper grounding can result in signal interference, data distortion, or even catastrophic incidents such as fires and explosions. Grounding is essential