E.D.&A.
› Applications › Legionella prevention
E.D.&A.
Legionella prevention controller
Specialist in the provision of measurement data (temperature, pressure, kWh, etc).
Description development / required specifications
This company has been using the standard products of Telecontrol Systems for years. For the smaller installations they need a smaller and cheaper alternative. E.D.&A. has developed a custom-made controller which is based on the standard TC9. This version is 100% software compatible, by which the application software can absolutely be reused.
This controller has a number of digital and analogue temperature inputs. It is also provided with serial communication ports. Also with this controller the data are sent via the GSM/GPRS network toward a central data server. The end customer can see and analyse his own measurement data using his internet browser after entering his password.
This system is currently used a lot for Legionella prevention. Legionella occurs in water pipes if it stays at a certain temperature for a long time. By recording the temperature of the water pipe at crucial points, it can be determined whether Legionella bacteria could be present. If this is the case, an alarm is sent to the building manager who can then take action. However, it is also possible to automatically drive a flush valve to eliminate the danger.
Characteristics
- Analogue inputs 4 PT1000 temperature inputs
- Digital inputs 4 (24V DC)
- Operating temperature 0°C to +70°C. Up to 95 % relative humidity
- Dimensions (mm) 122 x 165
- Real Time Clock
- Consumption 50mA at 24 V DC + 6mA/ active input
- GSM/GPRS-modem
- RS232/RS485-port 1x RS232 + 1x RS485
- Power supply 24 V DC
- 1 LED heartbeat
- Available memory 192 Kbyte Flash and 64Kbyte RAM data memory for the user program with battery back-up
- Data log memory 255 Kbyte RAM with battery back-up
