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Molasses Storage Tank - Temperature Monitoring

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Introduction

ISA 100 WirelessTemperature 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.

 

Molasses Plant

The Boston molasses disaster (The Great Molasses Flood) which occurred on 15th Jan 1919 was due to increase in the storage tank temperature above 40 degree C which led to explosion of the tank.

Benefits

  • Improved operation efficiency and plant safety, wireless measurement is easy to achieve continuous monitoring of storage temperature
  • Minimized plant startup time and downtime (NO wire, NO routing problems, NO maintenance issue)
  • Reduced maintenance effort, low power consumption devices with proven battery life of 10 years with 30sec updates and non-proprietary battery cells.
  • Enabled easy integration with existing host system, industry proven Modbus platform enables easy and seamless integration with a wide range of host systems available in the industry

Requirements

  • transmittersOffline measurement shall not provide continuous measurement which leads to unnoticed variation in temperature effect on molasses property.
  • Minimize cables installation and maintenance.
  • Improve measurement accuracy.
  • Avoid human error which leads to loss of chemical property of Molasses.

Solution

Molasses tanks are located approximately 400m away from the control room. Two YTA510 wireless temperature transmitters with standard antennas (driving capability is 600m) were installed without repeater. Robust and reliable direct communications were established from the gateway.

Molasses Tank to Gateway

Modbus to Ethernet IP protocol converter was installed to establish the connection between the gateway and a host system, Allen Bradley PLC. These were located in the control room and antenna for the gateway was mounted outside using remote antenna cable to improve wireless quality.

Conclusion

  • ISA100 wireless solution enabled continuous monitoring of molasses temperature and increase plant and personnel safety.
  • Frost & Sullivan 2014 Best Practice AwardLow power consumption devices enabled savings in OPEX with reduced battery consumption with a proven battery life of 3.6 years with every second update of PV. As additional feature ISA100 devices supports configuration of device roles as per the application requirement.
  • Wider coverage driving capability reduced installation time and expenses involved, reflecting as direct savings to project expenses.

Yokogawa has a proven track record of delivering reliable, scalable and open technologies for a century. ISA100 wireless solutions address the specific challenges of the industrial automation industry while lowering cost ownership for our end users and maximizing their return on the investment.
 

Industries

Related Products & Solutions

YFGW710 Field Wireless Integrated Gateway

YFGW710 Field Wireless Integrated Gateway comply to the wireless communications standard ISA100.11a for industrial automation of International Society of Automation (ISA), and relays ISA100 Device data to the system via integrated backbone router. Single unit of YFGW710 has integrated functions of backbone router, system manager, security manage, and gateway.

YTA510 Wireless Temperature Transmitter

The high performance temperature transmitter YTA510 accepts Thermocouple, RTD, ohms or DC mill volt inputs. The transmitters transmit not only process variables but also the setting parameters using wireless signal. The transmitters run on internal batteries, and the installation cost can be decreased since hard-wiring is not required. The communication is based on ISA100.11a protocol specifications. 

Field Wireless

The flexibility of wireless solutions enables less investment in infrastructure while providing greater insights into plant operations.

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