admin_zero, Author at Just Measure it

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Does a Larger Pneumatic Cylinder Always Provide More Force and Better Stability?

Many people in industrial automation have a common assumption: “If a pneumatic cylinder has a larger bore size, it will always generate more force and operate more stably.” However, this is not always true. A larger cylinder can provide higher theoretical force, but it does not automatically mean better performance. In real industrial applications, cylinder […]

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Analog Signal vs Digital Signal: Understanding 4-20mA, DI, DO, AI and AO in Industrial Automation

In industrial automation systems, sensors and instruments need to communicate measurement information to PLCs, DCS systems, and control equipment. Among all industrial signals, analog signals and digital signals are the two most commonly used signal types. For beginners in automation and instrumentation, it is sometimes confusing: What is the difference between analog and digital signals?

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Gas Detector Sensor Aging: Lifespan, Failure Mechanisms and Replacement Strategy

Why Regular Calibration Is Not Enough Gas detection systems are critical safety devices used in chemical plants, oil & gas facilities, wastewater treatment plants, metallurgy industries, and other hazardous environments. The gas sensor is the core component of any gas detector. Its performance directly determines whether the instrument can provide reliable early warning during a

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Field Inspection and Maintenance of Differential Pressure Level Transmitters with Diaphragm Seal Systems

1. Preparation Before Inspection Before inspecting a differential pressure (DP) level transmitter equipped with a diaphragm seal and remote seal system, the following preparations should be completed: Contact the process operator and confirm the operating conditions. Obtain the required work permit according to site safety procedures. If the measurement loop is connected to a control

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Electromagnetic Flow Meter Shows Zero Flow: Causes and Troubleshooting Guide

Your pump is running. The valve is open. There is liquid in the pipeline. But the electromagnetic flow meter still reads zero. What should you check first? Some technicians immediately check the grounding connection. Others disable the empty-pipe detection function or suspect that the transmitter has failed. However, a running process does not necessarily mean

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Explosion-Proof Marking Explained: What Do the Brackets [ ] Mean in Ex db [ia Ga]?

When selecting explosion-proof instruments for hazardous areas, many engineers pay close attention to the protection type, such as: Ex d Ex e Ex ia Ex db Ex tb However, one small detail is often overlooked: Why are some explosion-proof markings written with brackets [ ]? For example: Ex db [ia Ga] IIC T4 Gb What

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Ethernet-APL vs 4-20mA: Will Ethernet-APL Replace Traditional Analog Signals?

Introduction For anyone working in industrial instrumentation and automation, 4-20mA signals are very familiar. Pressure transmitters, temperature sensors, level transmitters, and flow meters have been using this method for decades. Connect two wires, send the current signal back to the analog input module, and the control system can display the measurement value. When a signal

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10 Common Radar Level Transmitter Problems and Troubleshooting Guide

Radar level transmitters are widely used in oil & gas, chemical, power, pharmaceutical, food, and water treatment industries due to their non-contact measurement capability, high accuracy, and excellent reliability. However, during long-term operation, radar level meters may experience measurement failures caused by installation conditions, process changes, signal interference, or equipment aging. This article explains 10

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Ethernet vs TCP/IP vs Socket vs Modbus TCP vs EtherNet/IP vs PROFINET vs EtherCAT: Understanding Industrial Communication Protocols

Introduction When engineers start working with industrial communication, they often encounter many similar terms: Ethernet TCP/IP Socket Modbus TCP EtherNet/IP PROFINET EtherCAT These concepts are frequently mixed together because they are all related to industrial networking. For example, when someone asks: “Does this device support Ethernet communication?” The answer might be: Yes, it supports Modbus

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DP Transmitter Signal Fluctuation: Causes, Troubleshooting and Solutions

Why Does a Differential Pressure Transmitter Keep Fluctuating? In industrial process measurement, differential pressure (DP) transmitters are widely used for flow, level, and pressure measurement because of their reliability, simple structure, and wide application range. However, unstable DP transmitter output is one of the most frustrating problems faced by instrument engineers. A fluctuating DP signal

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