Underwater sludge blanket level monitor

Flow Measurement & Control

April 2003 Flow Measurement & Control Products & Solutions

DLM is now offering the MSL600 sludge blanket monitor that is a microprocessor based system with a range of built-in, display, control and alarm features. Easy to use menu-driven programming allows complete configuration of the unit.

Local programming is carried out via a membrane keyboard. The MSL600 uses the sonar principle, with an ultrasonic pulse transmitted underwater. Sophisticated echo processing allows the MSL600 to analyse the returning pulse of ultrasound, which is transmitted vertically and reflects from the surface of the sludge blanket. The system captures the ultrasonic echoes reflected from the blanket interface.

Knowing the speed of sound in the supernatant the depth of the sludge blanket is then determined from the time of flight of the echo. The system comprises an ultrasonic transducer and a bridge mounted control unit. These are specially designed for easy installation on a clarifier tank bridge using a mounting bracket, supplied with the system.

Applications include: Primary and secondary clarifiers in waste water applications, circular rotating or static clarifiers, rectangular clarifiers with moving or static bridges, most Lamella clarifiers, picket fence thickener sludge blanket levels.

Features include a human machine interface, an integral radio link and a self-cleaning design. Benefits to be had by the user include low maintenance, cost saving on otherwise expensive cable runs, remote communications and ease of calibration.

For more information contact, Dave Rosser, DLM, 011 457 0500, [email protected], www.dlm.co.za

Share this article:

Electromagnetic flow measurement
Siemens South Africa Flow Measurement & Control
The SITRANS FM electromagnetic flowmeters from Siemens deliver high-precision volume measurement of electrically conductive liquid applications – from water, wastewater and irrigation to hygienic processes and even mining slurries with magnetic particles.

Read more...

Advanced surveillance storage from ASBIS
Infrastructure Surveillance Products & Solutions
From a video storage solutions perspective, SkyHawk drives, designed for DVRs and NVRs, offer high capacity, optimised firmware, and a reliability workload rating of hundreds of terabytes per year.

Read more...

ABB unveils next generation of electromagnetic flowmeters
ABB South Africa Flow Measurement & Control
ABB has launched its latest generation of electromagnetic flowmeters, bringing unmatched accuracy, connectivity and flexibility to industrial and utility applications.

Read more...

Precision measurement for ultra-pure water systems
Flow Measurement & Control
[Sponsored] Ultra-pure water (UPW) is essential in industries where even minor contaminants can impact product quality and process integrity. Anton Paar’s L-Cor Coriolis mass flowmeters provide a highly accurate and hygienic solution by directly measuring the mass of the liquid using the Coriolis effect, ensuring a high level of cleanliness.

Read more...

Inline process solutions for gold mining
Anton Paar Flow Measurement & Control
[Sponsored]The extraction and processing of gold ore requires precision and efficiency to maximise yield and minimise losses. Automation and continuous monitoring of critical process steps are essential to ensure optimal production. Anton Paar offers advanced inline measurement solutions which enable full automation and real-time monitoring of key steps in gold extraction and processing.

Read more...

DoorBell with built-in AI
Ajax Systems Access Control & Identity Management Products & Solutions Smart Home Automation
Ajax Systems has announced the release of Ajax DoorBell, which features built-in AI, an IR sensor, and app control, seamlessly integrating into the Ajax ecosystem to ensure efficiency and security confidence.

Read more...

Magnetic-inductive flow sensor
ifm - South Africa Flow Measurement & Control
The SMF magnetic-inductive flow sensor revolutionises liquid and creamy flow measurement. With IO-Link, it enables digital data transmission, eliminating blind spots in production.

Read more...

Hygienic flow measurement for the food industry
ifm - South Africa Flow Measurement & Control
With the SMF magnetic-inductive flow meter, ifm offers a solution for the hygienic flow measurement of media with variable flow rates through a pipe, such as beer, milk or fruit juice.

Read more...

Case History 197: Bad reboiler temperature control.
Michael Brown Control Engineering Editor's Choice Flow Measurement & Control
It is very important that reboiler temperature controls operate well in petrochemical refineries, or the product quality can really suffer. I was asked to check such a control in a refinery where they were having problems with one of these controls.

Read more...

Flow Measurement & Control

Underwater sludge blanket level monitor

Further reading:

Published by Technews