Have you ever noticed the numbers on the top of a bolt—like 8.8, 10.9, or 12.9? These are not just random figures; they represent the strength grade of the bolt, and they hold the key to ensuring safety and reliability in various structures, from bridges to wind towers to industrial buildings, and even in your […]
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When working with piping systems, understanding the relationship between Nominal Diameter (DN) and Outside Diameter (De) is crucial for accurate pipe selection, installation, and compatibility with fittings. This guide provides detailed insights into the DN and De relationship across different types of materials, including steel pipes and plastic pipes (PVC/PE/PPR). What is Nominal Diameter (DN)?
A Comprehensive Guide to Nominal Diameter (DN) and Outside Diameter (De) of Pipes Read More »
In modern industries such as chemicals, oil, pharmaceuticals, food, and environmental protection, level measurement plays a critical role in process control. For special media environments that are corrosive, prone to crystallization, high-viscosity, or prone to solidification, traditional differential pressure transmitters with capillary tubes often experience blockages, corrosion, or signal drift. In these cases, dual-flange level
How to Choose a Dual-Flange Level Transmitter? This Guide Has It All Read More »
During a recent device debugging session, I encountered an unstable RS485 communication issue. It reminded me of a fundamental yet crucial point: why must the voltage of an RS485 signal be confined within the -7V to +7V range? Many people may know this as a requirement but may not fully understand the reasoning behind it.
Why Is the RS485 Voltage Range Set from -7V to +7V? Read More »
Calibration ensures that instruments and equipment provide accurate and consistent measurements. While professional calibration typically requires specialized tools and expertise, non-professionals can perform basic calibration tasks for routine checks or when high precision is not mandatory. Below is a detailed guide to help non-professionals calibrate instruments and equipment effectively. 1. Understand the Calibration Needs Before
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Overloading phenomenon is a common issue in the batch material dispensing control process. Specifically, when the total dispensing amount reaches the preset value, the controller immediately sends a signal to close the valve. However, due to system lag and inertia, some fluid continues to flow towards the receiving end, causing the final dispensing amount to
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Industrial Control Systems (ICS) are the “nervous system” of key sectors such as manufacturing and energy supply, and their network security directly determines the stability of production and even the safety of physical environments. However, many technicians encounter confusion when dealing with ICS security. Today, we will clear up some common but often overlooked points.
How to Quickly Get Started with Industrial Control System (ICS) Security? Read More »
The installation of rotor flowmeters directly impacts measurement accuracy and service life. The following technical requirements must be strictly adhered to, with key details illustrated by the diagrams provided. 1. Core Installation Principles 1.1. Flow Direction and Vertical Alignment The rotor flowmeter must be installed vertically, with fluid flowing upwards through the tapered tube. The
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The integration of flow meters and differential pressure (DP) transmitters is based on the principle of differential pressure measurement. The DP transmitter converts the small differential pressure signals generated by the flow element into standard electrical signals, enabling accurate flow measurement and remote transmission. This creates a symbiotic relationship between “flow measurement” and “signal conversion.”
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1. Causes of Valve Internal Leakage: Corrosion and Wear of Valve Core or Valve Seat: Over time, wear and corrosion can compromise the sealing performance of the valve, leading to internal leakage. Corrosion of the External Thread of the Valve Seat: Corrosion can damage the valve seat’s external threads, affecting its sealing capability. Large Pressure
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