Underwater sludge blanket level monitor

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

Further reading:

Hygienic and accurate flow measurement
ifm - South Africa Flow Measurement & Control
ifm’s ultrasonic sensor detects flows of conductive and non-conductive media with high precision.

Read more...

---

Paxton officially launches PaxLock Pro2
Paxton News & Events Access Control & Identity Management Products & Solutions Smart Home Automation
Paxton’s wireless access-controlled door handle is engineered to withstand the most demanding environments, while maintaining a sleek, contemporary design. It includes a new Privacy Button, and offers up to 55 000 operations on a single set of batteries.

Read more...

---

What good estate security looks like in 2026
Security Services & Risk Management Residential Estate (Industry) Products & Solutions
Most estates have no shortage of guards, cameras and boom gates. The harder questions are: can you see what is happening across the whole estate right now, and do you hear about a problem before a resident does?

Read more...

---

Dallmeier offers 12 MP resolution
Dallmeier Electronic Southern Africa Surveillance Products & Solutions
Dallmeier is expanding its Domera camera portfolio with the new 6900 series with up to 12 MP resolution and improved light sensitivity. The higher resolution also helps meet the increased requirements of IEC 62676-4:2025.

Read more...

---

SanDisk MAX ENDURANCE microSD card
Technews Publishing SMART Security Solutions Smart Home Automation Products & Solutions
SMART Security Solutions received a 128 GB SanDisk microSD card for the video surveillance market to put to the test. The storage card is designed for edge-recording cameras, dashcams, and more.

Read more...

---

Lightweight body-worn camera
Axis Communications SA Surveillance Products & Solutions
Axis releases new lightweight body-worn camera designed to perform throughout the day. Built on open standards, it integrates seamlessly with AXIS Camera Station and third-party on-premises or cloud-based VMS solutions.

Read more...

---

Master Lock launches Elite Padlock series
Asset Management Products & Solutions
Re-engineered from the ground up, the range offers advanced protection against cutting, picking, prying, impact attacks, and harsh weather conditions, making it the ideal choice for both security-conscious consumers and demanding professional users.

Read more...

---

Readers support employee badge in Apple Wallet
Gallagher Access Control & Identity Management Products & Solutions
rf IDEAS, a global manufacturer of RFID credential readers, today announced that its WAVE ID readers support Gallagher Employee Badge in Apple Wallet, expanding the range of credential technologies supported across its reader platform.

Read more...

---

BlueVision launches Fusion Cloud
BlueVision Information Security Products & Solutions
Most businesses have moved to the cloud, including Microsoft 365, Azure, AWS and more, and in doing so assume they're protected because they're using a reputable platform; however, the reality is somewhat different.

Read more...

---

Synology unveils Surveillance365
Surveillance Products & Solutions
Synology has launched Surveillance365, a Video Surveillance as a Service solution that enables businesses to deploy enterprise-grade multi-site surveillance in minutes and scale without additional IT overhead.

Read more...

---