Applications >> Legionnella |
Monitoring water temperatures and sending alarms if temperature if out of pre-set boundaires is critical for this application.
Legionella pneumophila is a bacterium which can cause legionnaire’s disease, a type of severe pneumonia. Outbreaks occur from purpose built water systems where temperatures are warm enough to encourage growth of the bacteria – for example in air-conditioning and industrial cooling systems, whirlpool spas, hot and cold tap water systems and showers.
Legionella is traditionally controlled by storing hot water above 60°C and distributing it at above 50°C and keeping cold water below 20°C.
The Challenge
Woon op Maat (which translates to ‘live at size’) hire/rent apartments, for which they are responsible by law for the quality of the water in the hot and cold water system used for drinking, showers, etc. Cold water must be kept below 20°C and warm water above 60°C.If cold water has been above 20°C for a certain length of time, it must then be cooled for a certain length of time in order to kill the legionella.
How we were able to help
Due to the design of the buildings and as this is a retro fit it was appropriate to fit a wireless monitoring system. The Icespy System5 offered all the required features. System5 SCOUTs were set up at 15-20 points in each building, measuring the temperature of the hot water where it comes out of/goes into the boiler(s), the temperature of the cold water at various points in the system, and so on. For return ducts that link seven or so apartments, adaptors with external sensors are mounted in thermostatic circulation valves (MTCVs). For other points, Icespy copper foil sensors are used.
Data is collected in the BASE unit with a modem. The modem gives them the facility for the alarms to be monitored by an external agency.
A typical environmental health application uses a Multi-point Sensor Monitoring system. Please click on this option below:-
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