The sensor has been designed to detect the presence of water in drip trays and energise an internal relay to provide a volt free contact signal to existing alarm systems. The unit has no external metal parts and uses an optical sensor to detect the presents of water and therefore is not susceptible to false alarms from contact with the metal drip tray or other sensors via earth. Being IP 66 rated, the sensor can be submerged in water without any detrimental effect. Sensors can be connected together to give a common alarm within an area  or connected individually to provided exact location of a leak.

The sensor has been designed to detect the presence water in drip trays and energise an internal relay to provide a volt free contact signal to existing alarm systems, Building Management Systems or SMS messaging systems.

Unlike other sensor on the market, the DTS sensor has no external metal parts used to detect the presents of water and therefore is not susceptible to false alarms from contact with the metal drip tray or other sensors via earth. Being fully potted, the sensor is rated to IP 66 and capable of being submerged in water without any detrimental effect.

The mode of operation is the principle of total internal reflection. An LED and phototransistor are housed in a plastic (Polysulfone) dome. When no liquid is present, light from the LED is internally reflected from the dome to the photo-transistor. When a liquid covers the dome, the effective refractive index at the dome-oil boundary changes allowing some light from the LED to escape. Thus the amount of light received by the photo-transistor is reduced indicating the presents of a liquid.

Sensors can be connected together to give a common alarm within an area or connected individually to provided exact location of a leak.

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