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Solar Light, LLC

GLM10 Germicidal Lamp Monitor

Solar Light’s GLM10 Germicidal Lamp Monitor is specifically designed to continuously monitor germicidal lamp output in water contact vessels.

Ultraviolet Disinfection System Monitor

Ultraviolet water disinfection systems are only as good as the effectiveness of the germicidal lamps. With time, even the best UV water treatment system will show a significant degradation in its ability to disinfect water. Germicidal lamp output decreases as the lamp ages and /or becomes dirty through use.


Solar Light’s GLM10 Germicidal Lamp Monitor is specifically designed to continuously monitor germicidal lamp output in water contact vessels. The GLM10 assures that the germicidal lamp output stays within the manufacturer’s specifications for effective and safe water disinfection. The unit screws into the service port of an exposure chamber, where the built-in UV sensing probe monitors the lamp. The GLM10 is easily calibrated to 100% when a new lamp is installed and displays 0 – 100% intensity values. As the lamp ages and the output drops, the display accurately shows the intensity level as a percentage of initial lamp intensity. A preset threshold is used to determine when the threshold is reached, and then both the fault light and internal relay are activated for automatic valve control or remote alarm, ensuring a continuous supply of safe drinking water.

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