Introduction to Vacuum Valves and Their Role Vacuum valves are indispensable components in vacuum systems, tasked with directing airflow, regulating mass flow, and connecting or isolating vacuum system pipelines. To ensure efficiency and reliability, these valves rely on precise control mechanisms, such as vacuum electromagnetic valves, which leverage AC or…
What is the problem that needs to be solved? Building Management Systems (BMS), Demand-Controlled Ventilation (DCV) systems and Indoor Air Quality (IAQ) equipment often require installation of wirelessly-connected, battery-powered CO2 sensor devices in environments where mains power is not easily accessible or where its provision is not economically viable; such…
In 2015, vehicles driven by H2 fuel cells stepped into the first state of commercialization. Toyota Mirai has been in the market of America and Europe, and is planning to enter China later. In China, performance of fuel cell vehicles can basically meet the requirements of operation, so they have…
With rapid urbanization, utility tunnels play a crucial role in maintaining smooth city operations by consolidating pipelines and reducing construction-related accidents. To ensure safety and efficiency, sensor monitoring systems are deployed throughout utility tunnels to provide real-time data on key parameters. Real-Time Environmental Monitoring Sensors are strategically installed at set…
The Internet of Things (IoT) is a vast information system based on the Internet, where RFID and wireless data communication connect the sensing layer with the application layer. This interconnection creates a comprehensive network that integrates human activity with the environment through sensing and control systems. The Importance of Low…
Scrubbing solution is added in the washing section during the fractional extraction process to eliminate impurities and fission fragments from the loaded organic phase. Various scrubbing solutions are used for different demands. ISWeek demonstrates how to detect the liquid level of scrubbing solutions in washing equipment before it gets too…
In computer equipment, large amounts of semi-conductors, resistors and capacitors, etc are being used. When the computers are operating, the temperature rise will somehow affect the functioning of these elements. To ensure the computers’ normal operation, not only the temperature in the room should be strictly controlled, but humidity also…
A brief instruction of the largest underground utility tunnel under construction in China The largest underground utility tunnel ever in China is being constructed in Xi’an City. The construction is expected to be finished in 2020, with its full length of 73.13km, and 182.5km cable in it. How are the buried…
UV sterilizing lamp is actually a kind of low pressure mercury lamp. It activates low pressure (<10-2Pa) mercury vapor to emit UV light. The spectral lines are mainly of 253.7nm and 185nm, which are both invisible. Applications of UV sterilizing lamps 1. Surface Sterilization: Surface sterilization requires the surface to be…
Understanding PM2.5 and VOCs: The Invisible Threats What Are PM2.5 Particles? PM2.5 refers to airborne particles with a diameter of 2.5 micrometers or smaller. These microscopic pollutants – composed of carbon, nitric oxides, sulfur oxides, and ammonia – originate from both natural sources (e.g., wildfires) and human activities (e.g., industrial emissions). Their…
A fresh air system is an independent air processing system consisting of a supply system and an exhaust system. These systems are categorized into ducted (with pipelines) and ductless (without pipelines) configurations. Ducted systems, which include a fresh air ventilator and pipe fittings, are ideal for industrial facilities or large offices due to their…
Volatile Organic Compounds (VOCs) pose significant health and environmental risks in industrial parks. Traditional catalytic combustion sensors struggle with slow response times and susceptibility to poisoning, especially for high-carbon-chain VOCs (≥C5). Photoionization Detectors (PIDs), such as Alphasense PID-A1 and PID-AH, overcome these limitations by enabling rapid, precise detection at PPB to PPM levels….
