Amphenol TSD-10 Turbidity Sensor Phototransistor Output

The Amphenol Advanced Sensors Thermometrics TSD-10 Turbidity Sensor is an optical module that measures the turbidity of wash water in washing machines and dishwashers, delivering a phototransistor output that translates light transmission into a turbidity signal. It operates from a 5 V DC supply (between pin 1 and ground) and draws up to 30 mA, with a voltage differential of 3.0 V ± 10% used during calibration across the light source and receiver to gauge turbidity. The sensor supports an operating temperature range of -10°C to 90°C and a storage range of -20°C to 90°C, suitable for both residential and commercial appliance environments, and its electrical characteristics include an insulation resistance specification of at least 100 MΩ at 500 V DC. Calibration references NTU steps by testing the output in water at 0 NTU and 4000 NTU to establish a master standard liquid, ensuring repeatable turbidity readings via the phototransistor output for reliable water clarity monitoring in laundry equipment. Applications focus on turbidity detection in wash water for machines and dishwashers, and the TSD-10 is part of Amphenol’s Thermometrics turbidity sensor line, listed as active by major distributors and readily sourced for integration into appliance sensor assemblies.