Approximately 95% of the ultraviolet energy emitted from STER-L-RAY™ germicidal lamps is at the mercury resonance line of 254 nanometers, the region of germicidal effectiveness most destructive to bacteria, mold and virus.

Guardian™ Ultraviolet Monitor:

Visually indicates the level of germicidal ultraviolet energy that penetrates the quartz sleeve and water within the disinfection chamber. The ultraviolet monitor will detect reduction of ultraviolet levels due to:
• Fouling or deposits on the quartz sleeves.
• Poor ultraviolet transmission through
the water.
• Lamp outage, component or power failure.
• Depreciation of the lamp output due to usage or other cause (lamp output gradually depreciates with use). Lamp replacement is recommended once each year.
The ultraviolet monitor is available in either an analog or digital version.
The digital version monitor supplies outputs for remote monitoring of the disinfection system's operation, these outputs are: 12v DC., 4-20mA output, Dry contacts.

Remote Audio Alarm: Activated by the ultraviolet monitor, alerts the operator to any malfunction detected.
Manual Wiper System: Permits mechanical cleaning of the quartz sleeves without service interruption, or disassembly of the system.

Programmable Automatic Wiper System: Permits unattended mechanical cleaning of the quartz sleeves without service interruption, or disassembly of the system. Can be programmed for a maximum of 6 wipe cycles per day, 7 days per week (once programmed operation is fully automatic).