admin_zero, Author at Just Measure it - Page 45 of 355

admin_zero

Chemical Instrumentation Selection: A Practical Guide

Instrumentation /

Selecting the right instrumentation is a critical aspect of ensuring the safety, stability, and efficiency of chemical processes. The selection process must take into account a variety of factors, such as process conditions, medium characteristics, environmental requirements, and measurement precision. This guide outlines the key steps and considerations to help streamline the selection process. 1. […]

Chemical Instrumentation Selection: A Practical Guide Read More »

Key Requirements for PLC Installation: Essential Guidelines for Instrumentation Engineers

PLC /

Programmable Logic Controllers (PLCs) are designed to operate reliably in industrial environments, but proper installation practices are critical to ensure long-term stability, safety, and maintainability. This document summarizes the key requirements for PLC installation, covering environmental conditions, grounding, cabinet setup, commissioning, redundancy testing, program backup, and software maintenance. 1. Environmental Requirements Enclosure: Install PLCs in

Key Requirements for PLC Installation: Essential Guidelines for Instrumentation Engineers Read More »

Comparative Analysis of Orifice Plates and Nozzles in Differential Pressure Flow Measurement

Flow meter /

Abstract Orifice plates and nozzles are two of the most widely used primary elements in differential pressure (DP) flow measurement. Both create a localized constriction in the pipeline to generate a pressure drop, which is then related to flow rate using Bernoulli’s and continuity equations. Despite sharing the same principle, they differ significantly in geometry,

Comparative Analysis of Orifice Plates and Nozzles in Differential Pressure Flow Measurement Read More »

Self-Optimizing Control (SOC): Rethinking Process Optimization in Chemical Systems

Instrumentation /

In large-scale chemical control systems, a typical structure involves a hierarchical separation of control and optimization layers based on time scales. The system is divided as follows: Basic Control (seconds) Advanced Control (minutes) Real-time Optimization (hours) Scheduling (days/weeks) Planning (months/years) This separation simplifies complex problems by addressing different time scales in distinct layers. Can Advanced

Self-Optimizing Control (SOC): Rethinking Process Optimization in Chemical Systems Read More »

Can Four-Wire Instruments Be Designed as Intrinsically Safe?

Instrumentation /

Abstract In hazardous-area automation projects, the choice of explosion-proof type is a fundamental engineering decision. While two-wire transmitters are commonly designed as intrinsically safe (Ex i), engineers often ask whether four-wire instruments can also achieve intrinsic safety. This paper provides a comprehensive analysis from the perspectives of power consumption, energy limitations, international standards, and engineering

Can Four-Wire Instruments Be Designed as Intrinsically Safe? Read More »

Why Steam Measurement with Averaging Pitot Tube Flowmeters Always Shows Errors

Flow meter /

Abstract Averaging Pitot tube flowmeters are often applied in steam measurement due to their simple structure and low pressure loss. However, when used for wet steam, they frequently produce significant measurement errors. This paper analyzes the mechanism of error generation, highlights the impact of incorrect installation, and provides practical recommendations for improving accuracy. It also

Why Steam Measurement with Averaging Pitot Tube Flowmeters Always Shows Errors Read More »

Pneumatic Conveying: Principles, Pressure Control, and Industrial Applications

Instrumentation /

Abstract Pneumatic conveying is a widely used method for transporting powders and granular materials in modern industries. By using compressed air as the driving force, it enables efficient, dust-free, and flexible material handling over long distances. This article introduces the basic principles, pressure requirements, pressure loss mechanisms, causes of fluctuations, vessel pressure behavior, and industrial

Pneumatic Conveying: Principles, Pressure Control, and Industrial Applications Read More »

How to Avoid Common Level Gauge Problems: Start with Proper Installation

Level meter /

Abstract Level measurement is a critical element of industrial process control, directly affecting production safety, reliability, and efficiency. Commonly used instruments include radar level transmitters, ultrasonic level meters, tuning fork level switches, magnetic level indicators, and float-type gauges. Each technology has unique installation requirements; neglecting them can cause inaccurate readings, false signals, or equipment failure.

How to Avoid Common Level Gauge Problems: Start with Proper Installation Read More »

How to Select the Differential Pressure Transmitter Range Based on Process Conditions

Pressure Transmitter /

When choosing the range for a differential pressure (DP) transmitter, it’s essential to consider both process conditions and the transmitter’s technical specifications. Below is a detailed guide outlining the key steps and considerations for selecting an appropriate DP transmitter range. 1. Determine the Measurement Range Identify the Maximum Range of Pressure Variation: Start by evaluating

How to Select the Differential Pressure Transmitter Range Based on Process Conditions Read More »

Rainy and Thunderstorm Season: Why Do Instruments Frequently “Fail”?

Instrumentation /

Root Causes and Practical Protection Measures 1. Introduction In chemical and process industries, the reliable operation of field instruments is critical to production safety and efficiency. During the rainy and thunderstorm season, instruments are particularly vulnerable to failures caused by moisture ingress, water accumulation, and lightning strikes.This document provides a structured guide to rainproofing and

Rainy and Thunderstorm Season: Why Do Instruments Frequently “Fail”? Read More »

Translate »