Wireless Round-the-Clock Observation of Coal Stacks, No Matter where Measurement Points May Move


One important risk to manage with regard to coal stacks is preventing fires due to spontaneous combustion. Generally, coal stacks are located in expansive areas where the wind blows unobstructed, posing a constant risk of spontaneous combustion. Even the best contingency plans by independent fire-fighting teams are unable to address the cause of the problem. And once fires start, if they aren't extinguished quickly they can spread rapidly and result in overwhelming damage to the company. Many companies set up regular patrols by engineers as a fire prevention measure. However, measuring coal stack temperatures can be dangerous, and it takes a lot of time and effort to cover the extensive areas involved. By using Yokogawa Electric's "Plant-wide field wireless," you can safely acquire temperature data any time from any point in a vast coal stack as a fire prevention solution.

What is Plant-Wide Field Wireless?

Plant-Wide Field Wireless is a wireless system that employs the international ISA100 Wireless (IEC62734) industrial standard, giving it the reliability demanded of industrial wireless communication and real-time functionality. It utilizes a redundant "Duocast" technology that communicates with two Access Points simultaneously to maintain connection when a communication channel or Access Point fails. It is highly scalable, supports a variety of interfaces for connecting to the Access Points and upstream systems including Ethernet, wireless LAN, and optical Ethernet, and is flexible during structural changes, making it ideal for building large scale wireless networks.

Customer Benefits

  • Covers up to 500 Locations from up to 2 km
  • Safe and Efficient Monitoring at a Lower Cost
  • Low Entry Cost, and Delivery in as short as One Day

Solution and Benefits

Covers up to 500 Locations from up to 2 km

Portable thermocouples of approximately 2 m in length are embedded at measuring points on the coal mounds where ignition is most likely to occur. By connecting these to YTA510 Wireless Temperature Transmitters, temperature data from 2 meters in depth can be transmitted wirelessly. Because it's a wireless system, it easily conforms to changes in the shape of the coal stack. It has a maximum range of 500 m, and covers up to 500 measuring points. By installing repeaters, you can monitor from a control room that is up to 2 km away. This scale of regular fixed-point observation would not be realistic with wired solutions.

Safe and Efficient Monitoring at a Lower Cost

Unmanned operation means that engineers are freed up from dangerous coal stack temperature measurement work. Further, the transmitters are battery powered (lasting up to 10 years depending on operating conditions), and require almost no maintenance. You can expect to lower your costs because you can reduce the time and labor involved in surveying immense coal stacks.

Low Entry Cost, and Delivery in as Short as One Day

Wired solutions require installation with cabling, which costs time and money. But wireless is relatively inexpensive because you simply install a device at each measurement and relay point. Installing the system can take as little as a day, saving even more time.

Coal stack temperature monitoring

YOKOGAWA Solutions Meet even More Needs

We carry a broad lineup of wireless field devices. For the YT510 Wireless Temperature Transmitter, in addition to the 2-input model, we also carry the YTMX580 Multi-Input Temperature Transmitter that accepts up to 8 inputs per unit. With Yokogawa Electric solutions, you can connect to a variety of upstream systems, from small- to large-scale.


  • 钢铁




  • YFGW410现场无线管理站


  • YFGW510/YFGW520现场无线接入点


  • YFGW520 Field Wireless Access Point

    YFGW520 Field Wireless Access Poin has backbone router function based on ISA, and combining this with Field Wireless Management Station (YFGW410) and/or Field Wireless Media Converter (YFGW610) composes the field wireless system.

  • YTA510无线温度变送器

    高性能温度变送器YTA510接收热电偶、RTD、欧姆或DC mV输入信号。该变送器通过无线信号传输过程变量以及设定参数。该变送器采用内置电池,由于无需硬接线,因此可降低安装成本。通信规格以ISA100.11a协议为基础。

  • YTMX580多点输入温度变送器

    YTMX580最多可接收8点测量输入值,如热电偶(8种类型:K、E、J等)或RTD信号(3种类型:Pt100等),并将相应的测量输入值转换为无线信号。它也可以接收DC电压、电阻和4~20 mA DC信号输入。

  • 触屏式GX10/GX20

    SMARTDAC+TM GX10/GX20 是一款多点触屏记录仪,提供直观以人为本的设计,支持Web功能,具有可扩展的体系结构。

  • 无纸记录仪


  • 现场无线



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