Evoqua WALLACE & TIERNAN Barrier M 1200, Руководство по эксплуатации

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Barrier M
Description
3.
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3.4.4 UV sensor
Another key component of the Barrier M system is the UV sensor,
installed as a standard feature to enable continuous online moni-
toring of the disinfection efficiency. It is mounted in the middle of
the side of the UV reactor
and measures the UV intensity in the
UV reactor. It then sends these measurements to the control sys-
tem for optimized adjustment of the UV intensity, displayed as a
status message on the operating panel. The UV sensor has an
effective range from 220 - 285 nm.
Bild 5 Standard UV sensor
3.4.5 Pt100 temperature sensor
The UV lamps produce a considerable amount of heat, which is
carried away by an adequate flow of water. If this flow of water is
not ensured, overheating can occur, possibly resulting in damage
to the UV disinfection unit. A Pt100 temperature sensor is installed
in the UV disinfection unit on one of the lateral flanges for monito-
ring the water temperature. As soon as the set maximum water
temperature is exceeded, an alarm signal is given and the unit is
switched off.
Bild 6 Pt100 temperature sensor
3.4.6 Bimetallic switch
A bimetallic switch is fitted on the side flange to provide additional
temperature monitoring. This switches the lamps off if the Pt100
temperature sensor fails and the surface temperature in the disin-
fection chamber, as measured on the lamp flange, rises above the
maximum threshold, which is set at 65°C.
Bild 7 Bimetallic switch