Diagnostic ultrasound is one of the most widely used medical imaging modalities globally, with an exceptional safety record spanning more than five decades. Yet the very mechanism that enables imaging — the propagation of acoustic energy through living tissue —…

📅 2026-05-16  |  🏷️ IEC 61158 Fieldbus Industrial Communication Industrial Automation IEC 61158 stands as the single most comprehensive international standard in the industrial automation domain, officially titled “Industrial communication networks — Fieldbus specifications.” First published in 1999 and revised…

📅 2026-05-16  |   🏷️ IEC 61160 | Design Review | Product Development | Quality Management  |   ⏱ Approx. 1,400 words In modern engineering product development, design quality is the single most influential factor determining product safety, reliability, and market competitiveness. IEC 61160…

Standard Status: Withdrawn (superseded by IEC 61496-2) | Scope: Machinery Safety — Electro-sensitive Protective Equipment — Part 2: AOPD Requirements | Published: 1990s | Read Time: ~12 minutes ⚠️ Standard Status Notice IEC 61150 has been formally withdrawn and superseded…

📅 Technical Deep Dive · 2026 · TNLab | ⚙️ Domain: Machinery Safety · Robot Area Guarding · Functional Safety 💡 Standard Context: IEC 61151 is the withdrawn landmark standard covering Active Opto-Electronic Protective Devices responsive to Diffuse Reflection (AOPDDR).…

IEC 61152, titled “Safety of machinery — Electro-sensitive protective equipment — Part 4: Particular requirements for equipment using ultrasonic principles”, was an international standard that specified requirements for ultrasonic-based presence-sensing devices used to protect personnel near hazardous machinery. Published as…

ESPE Part 5: CCTV-Based Vision Guarding Systems for Hazardous Zone Detection ⚠️ Standard Status Notice: IEC 61153 has been withdrawn. However, its technical concepts laid the groundwork for modern machine vision safety systems. This article documents the core engineering value…

📅 Standard Edition: IEC 61145 (Withdrawn, superseded by IEC 60216-7) | Scope: Thermal endurance evaluation of electrical insulating materials | Method: Fixed Time Method The long-term thermal endurance of electrical insulating materials is a cornerstone parameter in the design and…

Standard Overview IEC 61146 is a multi-part measurement standard covering non-broadcast PAL/SECAM/NTSC video cameras. It defines standardized test conditions, test charts, and calculation methods for core parameters including resolution, sensitivity, signal-to-noise ratio, color reproduction, and geometric distortion across three camera…

Standard Overview: IEC 61148 establishes a unified identification and marking system for terminals and reference designations of power electronic equipment, including variable-frequency drives, inverters, converters, rectifiers, and cycloconverters. The current edition is IEC 61148:2019. Compliance with this standard ensures unambiguous…

💡 Standard Snapshot: IEC 61149 is the foundational standard for Electro-Sensitive Protective Equipment (ESPE) in machinery safety. It defines the general requirements for design, construction, testing, and marking of non-contact protective devices such as safety light curtains and laser scanners.…

Electric shock remains the most lethal hazard in electrical engineering. IEC 61140 serves as the foundational standard for protection against electric shock, establishing a unified framework that applies to all electrical equipment, installations, and systems — from household appliances to…

📌 Standard Snapshot: IEC 61141 established the system of preferred frequencies for acoustical measurements, defining octave-band and fractional-octave-band center frequencies that underpin modern sound level meters, noise monitoring instruments, and acoustic test equipment. Although withdrawn and superseded by ISO 266,…

📅 2026-05-16🏷️ IEC Standards | X-Y Recorders | Precision Measurement | Analog Instrumentation⏱ 15 min read 📑 Table of Contents 1. Standard Architecture: From IEC 61028 to the Two-Part IEC 61143 Framework 2. Part 1: Definitions and Requirements in Detail…

📅 2026-05-16 · 📂 Category: IEC Standards · 🏷️ Insulating Materials · Thermal Aging · Temperature Index 1️⃣ Standard Overview and Historical Context IEC 61144, titled “Test method for the determination of the temperature index of electrical insulating materials”, is…

🏷️ Railway Engineering 🏷️ Rolling Stock Testing 🏷️ Brake Systems 🏷️ Running Dynamics 🏷️ Safety Validation 🏷️ IEC 61133 IEC 61133:2016 is a fundamental international standard in the railway sector that establishes systematic requirements for the inspection and testing of…

Standard AnalysisInsulating Materials ⚠️ Standard Status Notice: IEC 61134 has been withdrawn and replaced by IEC 60216-5. Nevertheless, the fixed time method (FTM) defined in this standard remains a fundamental approach for accelerated thermal aging assessment of electrical insulation. It…