Low level alarms
December 2008
Level Measurement & Control
The electronic boiler water low level alarm WMS from Afriso-Euro-Index is designed to control water levels in heating systems according to DIN EN 12828.
As soon as the water level falls below a minimum the WMS sounds an alarm and the burner is switched off. The system is also self-checking and does not only detect low water levels in the boiler but also open or short circuit faults within the sensing probe circuitry. The complete WMS consists of the control unit and sensing probe, which are connected by a 2-core signal cable up to 50 m in length.
The control unit, which incorporates all indication and operating elements as well the electronics, is available in two versions: with an internal mains failure lock (after mains failure the control unit must be re-set) or with an external mains failure lock (after mains failure the unit re-sets automatically).
The probe consists of a metallic head with an additional plastic housing and a rod which can be retracted for functional test purposes. The sensing probe is also available in two versions: the DN 20 has an angular housing with two (DN 20) welding sockets; the R2 housing is in the form of a threaded socket with an R2 external thread.
The units are suitable for use in ambient temperatures from 0 to +55°C, and for boiler water temperatures up to 120°C and water pressures of 10 bar. A voltage-free relay contact is provided for remote signalling to event reporting systems, Internet, e-mail, mobile telephones or fax.
WMS requires a 230 V AC supply with a biased switch (NO) option available if remote resetting is required.
Further reading:
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...
Where every grain counts
VEGA Controls SA
Level Measurement & Control
VEGA’s advanced level and pressure measurement solutions offer transformative technologies to improve grain storage management in sub-Saharan Africa.
Read more...
Small, inexpensive radar level transmitters
VEGA Controls SA
Level Measurement & Control
Anyone who needs to keep processes running needs level measurement technology that measures reliably. However, what is needed is not always the most ‘fully featured’ solution, but the smartest one. This is exactly what VEGAPULS radar transmitters of the BASIC series do.
Read more...
printer friendly version