Foxboro buoyancy level transmitter
August 2019
Level Measurement & Control
Principle of operation
When an element a (displacer rod) is immersed into a liquid, according to Archimedes’ Principle, the displacer will ‘lose’ some of its weight proportional to the level of the liquid and its density. These changes in weight are converted to a measuring signal via a torque tube and can be used to determine liquid level, density and interface. When the displacer is fully immersed in the liquid, the density and interface level can be directed by suspending the displacer in a constant calendric shape into the liquid. This weight difference is detected by the use of a torque tube sensor that converts it to an electronic signal.
Foxboro’s intelligent 244LD LevelStar buoyancy transmitter is designed to perform continuous measurements for liquid level, interface or density in industrial process applications. The instrument is extremely robust and durable and easured values can be transferred using analog and digital methods. Digital communication facilitates complete operation and configuration via PC or control system. Despite extreme temperatures, high process pressure and corrosive liquids, the 244LD measures with consistent reliability and high precision. It is approved for installations in contact with explosive atmospheres and combines the abundant experience of Foxboro with most advanced digital technology.
Foxboro’s Model 244LD LevelStar is its most powerful version for high temperature and high pressure applications. Key features include:
• Process temperatures from –196 to 400°C.
• Process pressures from full vacuum up to 550 bar.
• Class 2500 and API 10000 version available.
• No moving parts = maintenance free.
• Easy two button and LCD display field calibration.
• FDT/DTM technology.
This turnkey solution consisting of a transmitter, displacer element and displacer chambers meets all EPC instrument specifications and is easy to setup and recalibrate in the field.
For more information contact Johan van Jaarsveldt, EOH Process Automation Solutions, +27 87 803 9783, [email protected], [email protected]
Further reading:
Where corrosion meets control
VEGA Controls SA
Level Measurement & Control
Reliable level measurement is essential in copper and cobalt processing, and at KCC, VEGA Controls is helping ensure uninterrupted operations with robust vibrating level switch technology.
Read more...
Safety, hygiene and quality management for Africa’s pharmaceutical manufacturing industry
VEGA Controls SA
Level Measurement & Control
VEGA sensors support critical processes in pharmaceutical manufacturing such as fermentation, purification, formulation, filling, storage and CIP/SIP cleaning cycles. Their design ensures that pharmaceutical manufacturers can maintain sterility, reduce downtime and achieve consistent batch quality, even in demanding production environments.
Read more...
Level measurement for hygienic applications
Endress+Hauser South Africa
Level Measurement & Control
Endress+Hauser’s Liquiphant is considered to be the most reliable and safe point level detector in industrial plants. The latest generation of devices is ready for Industry 4.0 and, with the Liquiphant FTL63, is ideally suited for applications with hygienic requirements.
Read more...
Groundwater level measurement using LoRa module
Instrotech
Level Measurement & Control
Monitoring groundwater levels across large industrial sites is critical. Salzgitter Digital Solution was tasked with developing a fully automated and digital monitoring system using Long Range Wide Area Network technology.
Read more...
Level measurement of an acid dosing tank at a WWTP
Level Measurement & Control
Ferric chloride and other acids are essential chemical substances in water and wastewater treatment. To control the dosing of acid solutions, an Australian wastewater treatment plant uses a special container to store, mix and add these chemicals. The company opted in favour of KROHNE’s OPTIWAVE 1540 radar level transmitter
Read more...
Sensors measure palm oil tank level
Instrotech
Level Measurement & Control
The Senix ToughSonic 30 accurately measures and monitors the level of palm oil in large tanks approximately nine metres in height.
Read more...
Precise level control
Level Measurement & Control
Whether in silos, tanks or process containers, the exact detection of fill levels is crucial for stable, safe and economical production processes. However, many common measuring methods quickly reach their limits in practice.
Read more...
Powering Africa’s sustainable mining
VEGA Controls SA
Editor's Choice Level Measurement & Control
At the 2026 Mining Indaba in Cape Town, one theme rises above all others, progress through precision. For VEGA, a global leader in process instrumentation, this mission aligns perfectly with its core purpose, which is turning measurement into meaningful progress.
Read more...
VEGA is redefining synthetic fuel production
VEGA Controls SA
Level Measurement & Control
Polish company, Ekobenz specialises in producing bio-hydrocarbons. The company utilises advanced manufacturing techniques where VEGA sensors monitor levels and interfaces, essentially overseeing separation layers in the process.
Read more...
Precision in paper processing
VEGA Controls SA
Editor's Choice Level Measurement & Control
Paper manufacturing is a demanding process that relies on consistency, precision and control at every stage. The VEGABAR 82 pressure transmitter is well-suited to these harsh environments.
Read more...
printer friendly version