NON-CONTACTING RADAR TRANSMITTER DESIGNED SPECIFICALLY TO MEET WATER INDUSTRY CONCERNS
By Vladislav Snitko, Emerson T
here are several compelling reasons why implementing a high-quality level measurement solution is crucial for water and wastewater companies. The continuous data provided by such solutions helps to optimise operational
efficiency, vessel utilisation and inventory management. Better visibility into operations can increase safety and sustainability by preventing overspills and dry running, and reducing water loss, environmental damage and downtime. Instant access to reporting data helps to ensure regulatory compliance, and by automating measurements that were previously performed by hand during manual rounds, the potential for human error is eliminated. To help companies achieve these benefits, level measurement devices need to be as accurate and reliable as possible and have low maintenance requirements. Ultrasonic and hydrostatic level measurement devices have traditionally been deployed in automated water and wastewater solutions, but the accuracy and reliability of these technologies is limited. For example, the measurement performance of ultrasonic devices can be impacted by process or environmental conditions such as temperature, pressure, foam, turbulence, build-up, the presence of gas in air, wind, dirt and spiderwebs. Build-up can also affect the accuracy of hydrostatic submersible transmitters, along with changes in density and temperature, and because they are touching the media, they need regular calibration and maintenance.
ADVANTAGES OF NON-CONTACTING RADAR TRANSMITTERS
By way of comparison, implementing non- contacting radar transmitters provides significant benefits in water and wastewater applications. Conditions such as temperature, pressure, light foam, condensation, build-up, wind, dirt and spiderwebs do not affect the measurement accuracy of these devices. They do not need to be calibrated, and because they are non-contacting, they have minimal maintenance requirements,
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Compact, cost-effective and easy-to-use level and flow transmitter from Emerson delivers significant benefits compared to legacy technologies
which helps to reduce their total cost of ownership. Although the advantages of non-contacting radar transmitters are well proven, they have typically been considered too bulky, complex and expensive for use in the water and wastewater industry. However, the introduction of the Rosemount™ 1208 Level and Flow Transmitter Series from Emerson is a game-changer, as the device has been designed specifically to meet the concerns of water and wastewater organisations. With the Rosemount 1208, Emerson has not only provided a transmitter with high levels of accuracy and reliability, but crucially, one which is also compact, cost-effective and extremely easy to implement and operate. The Rosemount 1208 features 80 gigahertz (GHz) fast-sweep frequency modulated continuous wave (FMCW) technology on a single electronic chip, which enables it to collect more information than legacy radar devices. It is this advancement that allows it to provide precise level measurements within a compact and cost-effective form that is ideal for
applications with space constraints, as typically found in the water and wastewater industry. With a level measurement accuracy of ± 2mm (0.08 inches) at a range of 15m (49 feet), the Rosemount 1208 can help organisations to increase their process visibility, optimise their operational efficiency and comply with environmental requirements. It performs well even when submersed and in outdoor conditions, and has drinking water approvals for use throughout the water supply chain.
SEAMLESS INTEGRATION Level sensors should be able to communicate over existing networks where a variety of communication protocols are used to connect equipment and devices. The Rosemount 1208 can be seamlessly integrated into existing networks as it not only supports traditional process communications technologies such as 4-20mA and HART, but also Bluetooth wireless technology and IO-Link. IO-Link is being increasingly used within water and wastewater applications and is backwards compatible with most fieldbus or industrial Ethernet host systems, including Modbus TCP, EtherNet/IP, OPC UA and Profinet. IO-Link connectivity enables a range of benefits. These include reducing installation complexity; enabling simple integration into high-level automation networks; providing access to process insights that can improve operational performance; and allowing remote configuration and monitoring. In addition, IO-Link and HART connectivity both enable access to advanced diagnostics. This supports predictive maintenance and more effective troubleshooting, and leads to reduced downtime and increased operational efficiency.
Emerson
Emerson.com/Rosemount1208 T: 0870 240 1978 E:
uksales@emerson.com
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