YTA510 Wireless Temperature Transmitter

• Como el contratista de automatización principal (MAC) para este proyecto de construcción de planta, Yokogawa Brasil diseñó, instaló, y puso en marcha una solución de control e instrumentación integrada.
• Yokogawa Brasil completó la puesta en marcha de estos sistemas antes de lo previsto y la producción de polímeros verdes se inició tan sólo una semana más tarde.

Eliminating the wire using wireless transmitter is the perfect solution for rotating equipment. It establishes data collection between the transmitter and the gateway by reliable communication even though the dryer was rotating.

ISA100 wireless temperature and pressure transmitters with orifice plates allow:

• No cabling installations or maintenance.
• Small amount of hardware and simple equipment implementation means minimizing potential vandalism.

La sosa cáustica y ácido clorhídrico, producida en las plantas electrolizadoras, son materiales fundamentales utilizados en varias industrias; químicas, farmacéuticas, petroquímicas, pulpa y papeles, etc. El beneficio es el resultado de la producción efectiva con costos de explotación/mantenimiento mínimos. El control adecuado del proceso genera estabilizado productos de calidad estables con una gran ganancia operativa.

• Temperature is monitored to maintain consistency of the viscous fiber entering the drum.
• Existing system requires manual temperature readings.
• Wired temperature measurement is not available because the tank is rotating.

ISA100 Wireless Monitoring  

• Gateway x1, Temperature Transmitter (YTA) x3, Pressure Transmitter (EJX) x1, Repeater x1

Gateway is installed at control room and 3m height extended antenna is set.

Challenges

• The distance is not so long, but there are many pipes and tanks ("Pipe Jungle") in the field.
• Had to avoid the obstacles and take care multi path condition.  

Solution

Repeater is installed on high place between control room and monitor position. The extend cable is used for antenna of Gateway.

• Temperature Transmitter (YTA) x1, Pressure Transmitter (EJX) x2

• Daily manual reading of pressure and temperature gauges with report by phone.
• The customer wants to change measurement from off-line to on-line.
• Cabling for wired transmitters in huge plants (up to 300 meters long) is expensive.

La mejora continua de la tecnología en curso en la industria de pulpa y papel sirve para obtener el mejor rendimiento posible. El desempeño mejorado de la planta se traduce en la mejora de la calidad y menor costo, al mismo tiempo una operación de la planta amigable con el medio ambiente.

ISA100 wireless temperature and pressure transmitters.

ISA100 Wireless Temperature and Pressure Transmitters

• Gateway x1, Temperature Transmitter (YTA) x1, Pressure Transmitter (EJX) x1

High quality wireless communication confirmed

• Packet Error Rate (PER) is 0 to 2.5%/ 5 days

• Wireless temperature measurement
  Gateway x1, transmitter (YTA) x1, repeater x2 (The 2 repeaters are for redundancy)
• Extended antenna to circumvent obstacles and improve the radio path for stable measurement (communication was unstable when the height of the antenna was low).

• Manual temperature reading requires walking about 130 m and climbing up and down elevated sections of the dryer stages.
• Multiple temperature measurement points along the various stages of the dryer require many cables to the control room.
• Very high humidity.

• Wireless temperature measurement 
  gateway x1, transmitter (YTA) x1
  repeater x1: between gateway and YTA.
• High quality wireless communication was confirmed.
  With repeater at center: The packet error rate was 0%.

Wireless temperature measurement solution makes modernizing operations and maintenance of delayed coker unit affordable.

Blending plays a key role in industries such as food, healthcare and chemicals etc. Temperature and vacuum measurements are very important in minimizing the moisture content to ensure the quality of the final product. Strictly maintaining them throughout the process ensures the final product yield.

Geothermal power plants create electricity from geothermal energy. These power plants are similar to other steam turbine station; however their heat source is that of the earth's core. The created steam is used to turn the turbine for the production of electricity. Technologies include Dry steam, Flash steam and Binary cycle power stations with Binary cycle being the most common geothermal plant in current production. In the process of geothermal power generation the facility needs to monitor various processes, as in this case steam line pressure sits in remote from control room's location.

A battery room is used to storage batteries for emergency power management in the plant. Each substation has battery room and the storage batteries are lead-acid batteries which must be maintained within specified operating temperature limits. Temperature management is important to ensure a long service life of the batteries especially for the plant in desert climates.

A horizontal rotary miller used to grind the limestone rocks with metallic balls as grinding stones. This is used as the raw ingredient to produce cement powder. The temperature needs to be monitored in order to control the process and the quality of the final product. The user was using an induction temperature measurement based on a rail system that was very fragile and therefore unreliable.

• Temperature monitoring at a tank farm
• Temperature and pressure monitoring in tank jungles, three vertical monitoring points.

Direct Reduction Iron (DRI) is one of the processes to reduce oxygen from iron oxide pellets for steel plant. More than 90% of DRI processes use heated LNG as process gas where PID control for temperature or interlock control is of vital importance.

One important risk to manage with regard to coal stacks is preventing fires due to spontaneous combustion.

• Wireless pressure and temperature monitoring.
• Repeater was set under the gateway.
• The maximum distance between the repeater and transmitters is approximately 500m.

Temperature plays a key role in storage of Molasses to maintain the chemical properties of molasses. When temperature rises over 40.5 degree C, destruction of structure in sugar occurs, which results in losing the feeding property of molasses. There is also a safety concern that a rise in temperature can lead to a rise in storage tank pressure leading to an explosion of the tank.

Remote leak detection for pipe line was needed to meet new environmental statute. However cabling earthwork is strictly restricted to protect land environment.

In recent years, more field wireless devices have been used in hazardous areas. Meanwhile, in plants that are usually recognized as hazardous areas, there are numerous metallic tanks and pipes that easily shield or reflect radio waves, as discussed later, thus resulting in a poor environment for wireless communication.

The innovation of wireless technology increases the use of wireless communication in the industry. The introduction of wireless communication to plants, however, requires strict features such as robustness, real-time responsiveness, and low power consumption. This has restricted the use of wireless communication to limited applications such as data logging and device status monitoring that does not require strict real-time responsiveness and data arrival reliability in communication.

A distinguished panel comprising of CEOs, CIOs, CTOs and analysts, including CIO Review editorial board, has selected Yokogawa as one of the top companies that are at the forefront of tackling challenges in the wireless markets in the U.S.