The SENTRY� safety sensor provides constant monitoring of the water purifier's ballast and germicidal lamp operation; indicator lights provide constant visual indication of ballast and germicidal lamp status.
� Easy installation,
� Plug SENTRY� into an electrical outlet, then plug water purifier into SENTRY�
� Operates optional Solenoid Valve and Audio Alarm
� Warns of lamp failure
� Easily adaptable for use with other water purifier brands.
� Available in 120v 50/60 Hz or 220-240v 50/60 Hz

Sentry� Manual

The GUARDIAN� Ultraviolet Monitor visually indicates the level of germicidal ultraviolet energy that penetrates the quartz sleeve and the water within the disinfection chamber. The GUARDIAN� Ultraviolet Monitor is capable of operating an optional Audio Alarm and Solenoid Valve. In addition, the GUARDIAN� Ultraviolet Monitor will detect loss of ultraviolet due to lamp outage, component or power failure. Use of the Ultraviolet Monitor is recommended by the US Public Health Service "Criteria for the Acceptability of an Ultraviolet Disinfection Unit".

The GUARDIAN� Ultraviolet Monitor will detect reduction of ultraviolet levels due to:
1. Fouling or deposits on quartz sleeve.
2. Poor ultraviolet transmission through the water. (Color, Turbidity, organic or other impurities in the water can reduce or interfere with the transmission of ultraviolet rays.)
3. Depreciation of lamp output due to usage or other cause. (Lamp output gradually depreciates with use. Lamp replacement is recommended once each year.)

The GUARDIAN� Ultraviolet Monitor has three models; Analog, Digital and Digital Remote. Voltage Configurations include 120V / 50 or 60Hz, 220-240V / 50 or 60 Hz, or 12VDC. Contact factory for special requirements. NOTE: GUARDIAN� Ultraviolet Monitor (analog, digital or digital remote) can be purchased and installed with the water purifier or at a later date for an existing installation.

The GUARDIAN� Ultraviolet Analog and Digital Monitors are mounted directly on to the water purifier. The sensor probe (included) is threaded into the sight port fitting of the ultraviolet water purifier. The aluminum collar on the bottom of the GUARDIAN� Ultraviolet Analog or Digital Monitor is secured over the sensor probe.

The GUARDIAN� Ultraviolet Digital Remote Monitor is intended for use in a location away from the water purifier that is being monitored. In all other respects, the remote GUARDIAN� behaves the same as the standard GUARDIAN�. Mounted on the back of the remote monitor is a socket into which the lead from an ultraviolet sensor is connected. Instead of being mounted inside the monitor housing, this sensor is contained within the remote probe. A standard length for the connecting cable supplied with the probe is 50 ft., but the lead length may be extended if desired. Please contact the factory for additional lengths.
Guardian� Manual